© Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information ■ Overview LDS 6 is a diode laser gas analyzer with a measuring principle based on the specific light absorption of different gas components. LDS 6 is suitable for fast and non-contact measurement of gas concentrations in process or flue gases. One or two signals from up to three measuring points are processed simultaneously by the central analyzer unit. The in-situ cross-duct sensors at each measuring point can be separated up to 700 m from the central unit by using fiber-optic cables. The sensors are designed for operation under harsh environmental conditions and contain a minimum of electrical components. ■ Application Applications • Process optimization • Continuous emission monitoring for all kinds of fuels (oil, gas, coal, and others) • Process measurements in power utilities and any kind of incinerator • Process control • Explosion protection • Measurements in corrosive and toxic gases • Quality control • Environmental protection • Plant and operator safety Sectors • Power plants • Steel works • Cement industry • Chemical and petrochemical plants • Automotive industry • Waste incinerators • Glass and ceramics production • Research and development • Semiconductor production LDS 6, typical installation with cross-duct sensors ■ Benefits The in-situ gas analyzer LDS 6 is characterized by a high availability and unique analytical selectivity, and is optimally suitable for numerous applications. LDS 6 enables the measurement of one or two gas components or - if desired - the gas temperature directly in the process: • With high dust load • In hot, humid, corrosive, explosive, or toxic gases • In applications showing strong varying gas compositions • Under harsh environmental conditions at the measuring point • Highly selective, i.e. mostly without cross-sensitivities Special applications In addition to the standard applications, special applications are available upon request. These contain both an expansion of the temperature and pressure range, as well as an expansion of the concentration measuring range. Furthermore, other gas species can be measured using special applications. LDS 6 properties: • Little installation effort • Minimum maintenance requirements • Extremely rugged design • High long-term stability through built-in, maintenance-free reference gas cell, field calibration is unnecessary • Real-time measurements Moreover, the instrument provides warning and failure messages upon: • Need for maintenance - Erroneous reference function - Bad signal quality • Violation of a lower or upper alarm level for the measured variable • Transmitted amount of light violating an upper or lower limit Siemens AP 01 · 2015 2/3 2 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information ■ Design The gas analyzer LDS 6 consists of a central unit and up to three in-situ sensors. The connection between the central unit and the sensors is established by a so-called hybrid cable, which contains optical fibers and copper wires. An additional cable connects the transmitter and receiver parts of the cross-duct sensor. 2 Central unit The central unit is housed in a 19" rack unit housing with 4 fixing points for mounting: • In a hinged frame • In racks with or without telescopic rails Display and control panel • Large LCD field for simultaneous display of measurement result and device status • Contrast of the LCD field is adjustable via the menu • LED background illumination of the display with energy-saving function • Easy-to-clean membrane touch pad with softkeys • Menu-driven operation for parameterization and diagnostics • Operation support in plain text LED-backlit graphic display and membrane tactile-touch keyboard Inputs and outputs • One to three measurement channels with hybrid connections for the sensors at the measuring points • 2 analog inputs per channel for process gas temperature and pressure • 2 analog outputs per channel for gas concentration(s). For selected versions, the transmission can be read out as an alternative. • 6 freely configurable binary inputs per channel for signaling faults or maintenance requests from external temperature or pressure transducers or sensor purging failure. • 6 freely configurable binary outputs per channel (signaling of fault, maintenance requirements, function control, transmission limit alarm, concentration limit alarm, store analog output) Communication Network connection: Ethernet (T-Base-10) for remote diagnostics and maintenance. Status line to indicate the device status Two code levels according to NAMUR Menu-driven operator control with five softkeys Physical unit of the sample gas component Numeric display of concentrations ESC key to cancel entries Numeric keypad for entering digits INFO key for help in plain text CLEAR key to delete the digits entered LDS 6 central unit, membrane keyboard and graphic display 2/4 Siemens AP 01 · 2015 ENTER key to adopt the numbers MEAS key to return direct to measurement mode © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information Cross-duct sensors Parts in contact with the process gas The sensors normally do not come into contact with the process gas, since purging with a gaseous media is applied at the process side. Stainless steel purging gas tubes in front of the sensor windows immerse slightly into the process gas and thus limit the purging volume. Special materials such as Hastelloy and plastics (PP) are available on request. Hybrid and sensor cables A combination of fiber-optic cables and twisted copper wires connects the sensors to the central unit. The hybrid cable connects the central unit with the detector unit of the sensor, the sensor cable connects the transmitter and receiver units of the sensor. Sensor CD 6, transmitter or detector unit • In-situ cross-duct sensors, configured as transmitter and detector unit, connected via sensor cable • Connection to the LDS 6 central unit via a so-called hybrid cable of max. 700 meters in length (total hybrid and sensor connecting cable length: max. 250 m in Ex Zone 0 and Ex Zone 1) • Stainless steel, some painted aluminum • IP65 degree of protection for sensor • Adjustable flanges with flange connection • DN 65/PN 6, ANSI 4"/150 lbs • Optional flameproof window flanges with dimensions: DN 65/PN 6, DN 80/PN 16, ANSI 4"/150 lbs, other process interfaces available on request • Purging facilities on the process and the sensor sides, configurable application with purging gas connections for: - Instrument air - Purging air blower - Steam - Nitrogen - Process gases to which the pressure equipment directive cat. 2 does not apply • In combination with high-pressure window flanges, process purging can be done using instrument air or nitrogen • Quick release fasteners for cleaning the measurement openings and the sensor window • Optional: Version with explosion protection in accordance with ATEX / IEC Ex ia • Sensor type CD 6 is compliant with the pressure equipment directive For installation in Ex-protected environments, the legislative regulations have to be complied with, such as the spatial separation of intrinsically-safe from non-intrinsically-safe cables. In compliance with standard EN IEC 60079-14, systems with intrinsically-safe circuits must be installed such that their intrinsic safety is not impaired by electric or magnetic fields. Therefore the hybrid and sensor cables of the LDS 6 in an Ex application must be routed in such a way that they cannot generate electric or magnetic fields, e.g. by coiling them in more than one cable loop. To guarantee a good signal quality and to avoid impermissible inductance loops, the hybrid and sensor cables should be kept as short as possible. • The distance between central unit and measuring point can be - up to 250 m for Ex units when used in Zone 0 and Zone 1 (total hybrid and sensor connecting cable length) - up to 700 m for Ex units used in Zone 2 and for non-Ex units • Hybrid and sensor cables - Multimode fiber-optic cable, provided with SMA connections for transmission of the measured signal - Two-wire copper cable, in twisted pair version, for +24 V supply of the detector electronics (+12 V in the case of Exsuitable instruments) • Additionally for the hybrid cable: - Single-mode fiber-optic cable, configured double-sided with E2000 connectors for transmission of laser light • Rugged cable sheath for laying in open cable ducts or ductworks • Sheath material: oil-resistant polyurethane Connections of the hybrid cable Siemens AP 01 · 2015 2/5 2 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information ■ Function Operating principle 2 LDS 6 is a gas analyzer employing single-line molecular absorption spectroscopy. A diode laser emits a beam of near-infrared light, which passes through the process gas and is detected by a receiver unit. The wavelength of the laser diode output is tuned to a gas-specific absorption line. The laser continuously scans this single absorption line with a very high spectral resolution. Central unit The result is a fully resolved single molecular line which is analyzed in terms of absorption strength and line shape. The influence of cross-sensitivities on the measurement is negligible, since the quasi-monochromatic laser light is absorbed very selectively by only one specific molecular line in the scanned spectral range. Hybrid cables Measurement path Laser light P1 Electrical signals Measured volume Reflected LED light Channel 1 CPU and display Laser control Signal processing Diode laser E/O P2 E/O P0 E/O Measured volume Optocoupler Channel 2 E/O E/O PR Reference cell P3 Measured volume Channel 3 E/O Basic design of the LDS 6 Configuration examples A feature of the in-situ analytical procedure is that the physical measurement takes place directly in the stream of process gas, and usually also directly in the actual process gas line. All process parameters such as gas matrix, pressure, temperature, moisture, dust load, flow velocity and mounting orientation can influence the measuring properties of the LDS 6 and must therefore be systematically investigated for each new application. A feature of the standard applications defined in the ordering data of the LDS 6 is that the typical process conditions are wellknown, documented, and the guaranteed measuring properties can be proven by reference installations. If you cannot find your application among the standard applications, please contact Siemens. We will be pleased to check your possible individual application of the LDS 6. You can find an application questionnaire on the LDS 6 product sites on the Internet: www.siemens.com/insituquestionnaire 2/6 Siemens AP 01 · 2015 Central unit Process flange Transmitter unit Hybrid cable Gas concentration Flue gas composition Steam Dust load Gas velocity Gas temperature Gas pressure Receiver Measurement path length Sensor connecting cable Supplementary channel (option) Supplementary channel (option) Typical transmitted light setup of LDS 6, in-situ To avoid contamination of sensor optics on the process side, clean gaseous purging media such as instrument air, N2 or steam are used. Purging air tubes on the sensor heads, which slightly penetrate into the process gas stream, define the effective measuring path length. © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information The LDS 6 can measure in both the transverse and longitudinal directions of the process gas flow. In certain cases, the process conditions make it necessary to condition the sample gas stream in a bypass line with respect to process temperature, pressure and/or optical path length. Further treatment of the process gas, such as drying or dust precipitation, is usually unnecessary. In some specific cases, two components can be measured simultaneously if their absorption lines are so close to each other that they can be detected within the laser spectrum by one single scan (for example water (H2O) and ammonia (NH3)). Hybrid cable Supplementary channel (option) Supplementary channel (option) Sensor connecting cable Transmitter unit Central unit Sample gas inlet Temperature sensor Sample gas outlet Receiver Transmitter unit Heating (option) Sample gas inlet Sensor connecting cable Supplementary channel (option) Supplementary channel (option) 1+SSP A flow cell is available by special application for the LDS 6 which has been specially optimized for use with the LDS 6 and its transmitted-light sensors with respect to handling and measuring performance. It is designed to reduce surface effects, and is therefore also highly suitable for polar gases like ammonia. This flow cell is available in heated and non-heated versions. Wheel mounted and wall mounted versions are available. Hybrid cable 2 +2 Typical transmitted light setup of LDS 6, in bypass Central unit Pump Receiver Absorption spectra of water and ammonia Typical measurable gases for LDS 6 are: • Oxygen (O2) for low and high pressure • Hydrogen fluoride (HF) + water • Hydrogen chloride (HCl) + water • Ammonia (NH3) + water • Water vapor (H2O) • Carbon monoxide (CO) • Carbon dioxide (CO2) • CO + CO2 By using an internal reference cell normally filled with the gas measured, the stability of the spectrometer is permanently checked in a reference channel. By doing so, the continuous validity of the calibration is ensured without the need to carry out external recalibration using bottled calibration gases or reference gas cells. $EVRUSWLRQOLQH Measuring configuration of LDS 6 with heated flow cell General information LDS 6 is connected to the measuring points by fiber optics. The laser light is guided by a single-mode fiber from the central unit to the transmitter unit of the in-situ sensor. The sensor consists of a transmitter and a receiver; the distance between them defines the measurement path. In the receiver box, the light is focused onto a suitable detector. The detector signal is then converted into an optical signal and transmitted via a second optical fiber to the central unit, where the concentration of the gas component is determined from the detected absorption signal. LDS 6 usually measures a single gas component by means of the absorption capacity of a single fully resolved molecular absorption line. The absorption results from conversion of the radiation energy of the laser light into the internal energy of the molecule. /DVHUOLQH Typical spectral bandwidth of an absorption line compared to the bandwidth of the laser light. Siemens AP 01 · 2015 2/7 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information 2 Influences on the measurement Maintenance and fault messages Dust load LDS 6 outputs different warnings via relays: • Need for maintenance (measured value is not influenced) • Operating error (measured value might be influenced) As long as the laser beam is able to generate a suitable detector signal, the dust load of the process gases does not influence the analytical result. By applying a dynamic background correction, measurements can be carried out without any negative impact. Under good conditions, particle densities up to 100 g/Nm3 (distance 1 m) can be handled by the LDS 6. Varying dust loads are compensated by scanning the laser over the gas absorption line and the current background. The effect of a high dust load is complex and depends on the path length and particle size. The optical damping increases at longer path lengths. Smaller particles also have a large influence on the optical damping. With a combination of high dust load, long path length and small particle size, the technical support at Siemens should be consulted. Temperature The effect of temperature on the absorption strength of the molecule line is compensated by a correction factor. A temperature signal can be fed into an analog instrument from an external temperature sensor. This signal is then used to correct the influence of the temperature on the observed line strength. If the temperature of the sample gas remains constant, it is alternatively possible to carry out a static correction using a preset value. At high process gas temperatures, generally from approximately 1 000 °C, there may be noticeable broadband IR radiation of gas and dust, or flames may occasionally occur in the measurement path. An additional optical bandpass filter can be set upstream of the detector to protect it and prevent saturation by the strong background radiation. Pressure The effect of pressure on the absorption line, and consequently on the measured concentration, is compensated with a correction factor. The gas pressure can affect the line shape of the molecular absorption line. An analog pressure signal can be sent to the device from an external pressure sensor to fully compensate for the effect of the pressure including the density effect. Optical path length The absorption values analyzed by the LDS 6 are typically small. As a result of Beer-Lambert’s law, the absorption of laser light depends on the optical path length within the gas, among other factors. Therefore, the precision in determining the effective optical path length in the process might limit the overall precision of the measurement. As the sensor optics on the process side normally need to be purged to keep them clean over a long period of time, the thickness of the mixing zone between the purging medium and the process gas and its concentration distribution need to be considered. In a typical in-situ installation directly in the line and with some meters of path, the influence of the purging gas on the effective path length can be neglected. Path length and dust load are mutually influencing: the higher the dust load in the process, the shorter the max. possible path length. For short path lengths in the range ≤ 0.3 m, contact Siemens Technical Support. 2/8 Siemens AP 01 · 2015 Note Individual requirements for the measuring point can make the utilization of special sensor equipment necessary. The possibilities for adapting the sensors are: • Different purging media, such as instrument air, ambient air, nitrogen or steam • Different purging modes on process and sensor sides • Special materials of purging tubes and/or sensor flanges • Cooling or heating of the sensors • Explosion-protected sensor configurations Essential characteristics • Integrated calibration adjustment with an internal reference cell • Negligible long-term drifts of zero and span • Dynamic background correction for varying dust loads • Isolated signal outputs, 4 to 20 mA • User-friendly, menu-driven operation • Selectable time constants (response time) • Two user levels with individual access codes for prevention of unwanted and unauthorized operations • Operation according to NAMUR recommendations • Monitoring of overall optical transmission • Remote preventive maintenance and servicing via Ethernet/modem • Straightforward replacement of the central unit, since connections can easily be removed • Sensor and central unit housing free of wear and corrosion • Easy operation with a numerical keypad and menu prompting Certified versions for emission monitoring The LDS 6 is available as certified instrument for emission monitoring of NH3, NH3/H2O, H2O, HCl, HCl/H2O. The certificates are issued by TÜV for Germany and MCERTS for the United Kingdom. Test kits for ammonia, water and HCl should be used to conduct regular calibration and linearity checks on site. These kits can be ordered separately as instrument accessories. For new analyzer orders, the NH3, NH3/H2O and H2O kits named "Version 2" must be ordered. For already installed analyzers, please contact Siemens Technical Support for spotting the correct kit version, or consult the instrument manual. © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 General information Verification of calibration Assembly with certified, maintenance-free calibration gas cell with connections for laser fiber-optic conductors and detector module of cross-duct sensor. These are used to rapidly verify the factory calibration in the field without compressed gas bottles and flow cell. Calibration verification kits are available for the following sample gases: O2 (application codes AA, AC), NH3, CO, CO2, CO/CO2. A "Zero gas test kit" is also available. (see "Additional units") 2 Example of an assembly for verification of calibration Siemens AP 01 · 2015 2/9 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit ■ Technical specifications Electrical characteristics Analytical performance 2 Power supply Depending on sample gas component: see table for standard applications. For application code ET and FT: in accordance with the requirements of 17th and 27th BImSchV 100 ... 240 V AC 50 ... 60 Hz, automatically adapted by the system; with a 3-channel central unit, an additional external power supply +24 V DC, 50 VA is included in the scope of delivery Power consumption 50 W EMC According to EN 61326 and standard classification of NAMUR NE21 Depending on sample gas component: see table for standard applications. Electrical safety According to EN 61010-1, overvoltage classification II Fuse specifications 100 ... 240 V: T2.5L250V Measuring range Depending on sample gas component: see table for standard applications. Detection limit (DL): Calculated in accordance with VDI 2449, measured on every supplied analyzer during the temperature test (between 5 ... 45 °C) in accordance with VDI 4203. Smallest recommended measuring range (with 1 m path length) The maximum applicable measuring ranges can be found in the table of standard combinations. These can only be applied if the individual process conditions allow it. Please contact the Technical Support from Siemens for checking the applicability. Accuracy1) 2 % / 5 %, depending on sample gas component and application code. At best: detection limit. See table for standard applications. For application code ET and FT: in accordance with the requirements of 17th and 27th BImSchV Linearity Better than 1 % Repeatability 2 % of the measured value or same amount as the minimum detection limit (whichever is largest) For application code ET and FT: in accordance with the requirements of 17th and 27th BImSchV Calibration interval No recalibration required thanks to internal reference cell General information Dynamic response Warm-up time at 20 °C ambient temperature Approx. 15 min Response time Min. of 1 s, depending on application Integration time 1 … 100 s, adjustable Influencing variables Ambient temperature < 0.5 %/10 K of the measured value Atmospheric pressure Negligible Process gas pressure compensation Recommended Process gas temperature compensation Recommended Process gas pressure range See table for standard applications Power supply changes < 1 %/30 V Electrical inputs and outputs Concentration units ppmv, Vol%, mg/Nm3 Number of measurement channels 1 … 3, optional Display Digital concentration display (5 digits with floating decimal point) Analog output 2 per channel, 4 ... 20 mA, floating, ohmic resistance max. 750 Ω Analog inputs Laser protection class Class 1, safe to the eye 2 per channel, designed for 4 ... 20 mA, 50 Ω Certificates CE marking, TÜV, MCERTS Binary outputs 6 per channel, with changeover contacts, configurable, 24 V AC/DC/1 A, floating Degree of protection IP20 according to EN 60529 Binary inputs Dimensions 177 x 440 x 380 mm 6 per channel, designed for 24 V, floating, configurable Weight Approx. 13 kg Communication interface Ethernet 10BaseT (RJ-45) Horizontal Climatic conditions Design, enclosure Mounting Temperature range 5 … 45 °C during operation, -40 … +70 °C during storage and transportation Atmospheric pressure 800 … 1 200 hPa Humidity < 85 % relative humidity, above dew point (in operation and storage) 1) 2/10 Siemens AP 01 · 2015 The accuracy corresponds to intrinsic uncertainty according to IEC 61207 for 7MB6121-xKD00-0xxx © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Selection and ordering data Article No. 7MB6121- 7 7 7 0 7 - 0 7 7 7 LDS 6 in-situ gas analyzer 19" rack unit for installation in cabinets Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Explosion protection Without, not suitable for connection to Ex sensors Without, suitable for connection to Ex sensors in accordance with II 1 G Ex ia op is IIC T4 Ga, II 1 D Ex ia op is IIIC T135 °C Da Measured component 0 1 2 O2 Possible with application code of the respective channel B, C, P A NH3 NH3/H2O A, E, F, T A, E, F, T C D HCl HCl/H2O A, H, T A, H, T E F HF HF/H2O A, H A, H G H CO CO/CO2 C D J K CO2 H2O A A, T L M Application code of measured component channel 1 A B Application examples channel 11) Emission monitoring, non-certified Emission monitoring, combustion optimization A B C D Safety monitoring with appropriate plant concept Process control E F SNCR-DeNOx SCR-DeNOx E F H L Filter optimization Automotive, for use according EU regulation No. 595/2009/EC from June 18, 2009 (EURO VI) Process control (high pressure) H L Emission monitoring, QAL1 according EN 15267-3 (TÜV and MCERTS), in combination with measured component variants C, D, E, F, M T C P T CD 6, sensor alignment kit With Without Application code of measured component channel 2 X A B D P 0 1 Application examples channel 21) Channel 2 not used Emission monitoring Combustion optimization X A B C D Safety monitoring with appropriate plant concept Process control E F SNCR-DeNOx SCR-DeNOx E F H L Filter optimization Automotive, for use according EU regulation No. 595/2009/EC from June 18, 2009 (EURO VI) Process control (high pressure) H L Emission monitoring, QAL1 according EN 15267-3 (TÜV and MCERTS), in combination with measured component variants C, D, E, F, M T C P T 1) D P The examples shown represent possible applications where appropriately configured LDS 6 solutions can be used. The user is responsible for the prevailing conditions (plant concept (possibly redundant), application of appropriate components required in addition, compliance with possible directives, etc.). Siemens AP 01 · 2015 2/11 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Selection and ordering data Article No. 7MB6121- 7 7 7 0 7 - 0 7 7 7 LDS 6 in-situ gas analyzer 19" rack unit for installation in cabinets Application code of measured component channel 3 2 X A B Application examples channel 31) External 24 V DC power supply included in scope of delivery Channel 3 not used Emission monitoring Combustion optimization X A B C D Safety monitoring with appropriate plant concept Process control E F SNCR-DeNOx SCR-DeNOx E F H L Filter optimization Automotive, for use according EU regulation No. 595/2009/EC from June 18, 2009 (EURO VI) Process control (high pressure) H L Emission monitoring, QAL1 according EN 15267-3 (TÜV and MCERTS), in combination with measured component variants C, D, E, F, M T C P T D P Language (supplied documentation, software) German English French Spanish Italian Selection and ordering data Additional versions Add "-Z" to Article No. and specify Order code Telescopic rails (2 units) Set of Torx tools TAG labels (customized inscription) Additional units Optical band-pass filter for suppressing IR background radiation (flame filter) External power supply for hybrid cable length > 500 m Calibration verification kit for NH3 (version 2) TÜV/MCERTS linearity verification kit NH3 (version 2), 2 cells TÜV/MCERTS linearity verification kit NH3/H2O (version 2), 3 cells TÜV/MCERTS linearity verification kit H2O (version 2), 2 cells Calibration verification kit for NH3 (version 1) TÜV/MCERTS linearity verification kit NH3 (version 1), 2 cells TÜV/MCERTS linearity verification kit NH3/H2O (version 1), 3 cells TÜV/MCERTS linearity verification kit H2O (version 1), 2 cells TÜV/MCERTS linearity verification kit HCl, 2 cells TÜV/MCERTS linearity verification kit HCl/H2O, 3 cells TÜV/MCERTS linearity verification kit H2O (only for HCl/H2O analyzers), 5 cells TÜV/MCERTS linearity verification kit H2O (only for NH3/H2O analyzers), version 1, 5 cells TÜV/MCERTS linearity verification kit H2O (only for NH3/H2O analyzers), version 2, 5 cells TÜV/MCERTS linearity verification kit HCl, 5 cells TÜV/MCERTS linearity verification kit NH3, version 1, 5 cells TÜV/MCERTS linearity verification kit NH3, version 2, 5 cells Linearity verification kit NH3 (version 2), 10 cells2) Calibration verification kit for O2 (only for application codes AA, AC and AD) Calibration verification kit for CO Calibration verification kit for CO2 Calibration verification kit for CO/CO2 Zero gas verification kit for all gases except O2 1) 0 1 2 3 4 Order code A31 A32 Y30 Article No. A5E00534668 A5E00854188 A5E01075594 A5E00823339013 A5E00823339014 A5E00823339015 A5E00534675 A5E00823339003 A5E00823339004 A5E00823339005 A5E00823339008 A5E00823339009 A5E00823339007 A5E00823339002 A5E00823339012 A5E00823339006 A5E00823339001 A5E00823339011 A5E03693426 A5E01143755001 A5E01143755003 A5E01143755004 A5E01143755006 A5E00823386009 The examples shown represent possible applications where appropriately configured LDS 6 solutions can be used. The user is responsible for the prevailing conditions (plant concept (possibly redundant), application of appropriate components required in addition, compliance with possible directives, etc.). 2) In combination with the LDS 6 applications CL/DL suitable to measure NH3 according to the requirements of "Regulation No. 595/2009/EC on type-approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (EURO VI) from June 18, 2009 and its implementation standard the regulation 582/2011/EC from May 25, 2011” of the Commission of the European Community. 2/12 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit ■ Dimensional drawings s 101.6 178 2 LDS 6 355 465 483 428 351.5 177 432 437 483 440 LDS 6, 19" central unit, dimensions in mm Siemens AP 01 · 2015 2/13 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit ■ Schematics Pin assignments 68%'FRQQHFWRU) 0 2 0 0 0 *1' $QDORJRXWSXW3 $QDORJRXWSXW1 $QDORJRXWSXW3 $QDORJRXWSXW1 1& *1' $QDORJLQSXW3 $QDORJLQSXW1 $QDORJLQSXW3 $QDORJLQSXW1 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXWVWR1 *1' $QDORJRXWSXWV IORDWLQJDOVR DJDLQVWHDFKRWKHU 5/ืΩ 3UHVVXUHFRPSHQVDWLRQ 3UHVVXUHFRPSHQVDWLRQ 7HPSHUFRPSHQVDWLRQ 7HPSHUFRPSHQVDWLRQ &RPSRQHQW LIDYDLODEOH &RPSRQHQW 1RQIORDWLQJ DQDORJLQSXWVΩ) )ORDWLQJYLDRSWRLVRODWRU 99 99 68%'FRQQHFWRU') 0 *1' %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXWVWR1 )ORDWLQJYLDRSWRFRXSOHU 99 ಯರ 99 5HOD\ 5HOD\ 5HOD\ 5HOD\ 5HOD\LVFXUUHQWIUHHIRUUHOD\ FRQWDFWDUUDQJHPHQWVKRZQ 5HOD\ 5HOD\ *1' *1' LDS 6, 19" central unit, pin assignments 2/14 Siemens AP 01 · 2015 &RQWDFWORDG PD[9$$&'& © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Optical and electrical connections 25-pin connector: Binary inputs and relay outputs 15-pin connector: Binary inputs and analog inputs/outputs 2 Ethernet converter RJ-45 Power supply and fuses Hybrid cable support E2000 single mode opto-connector SMA multimode opto-connector 24 V DC sensor supply LDS 6, three-channel 19" central unit, optical and electrical connections Siemens AP 01 · 2015 2/15 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit ■ More information The following table lists the measuring conditions for standard applications. The listed values for the measuring range and detection limit (DL) are only approximate values. The exact values at the respective measuring point depend on the totality of all influencing variables and can be determined by Siemens for the specific case. 2 Standard application Effective optical path length: 0.3 … 12 m Dust load2): < 50 g/Nm3 Process gas temperature Tmin … Tmax Gas Gas Gas Appl. 1 2 code code A O2 C NH3 NH3 H2O D E HCl HCl H2O F Min. measuring range (with 1 m eff. opt. path length) Max. measuring (Max. measurrange ing range x (also dependent path length) on eff. opt. path length: see following column) (DL x path length) under standard conditions1) without cross-interference of other gases (DL x path Acculength) racy3) at 1 013 hPa with crossinterference of gas 2 Gas 1 Gas 1 Gas 1 Gas 1 Gas 1 Gas 1 B6) 600 … 1 200 °C 950 … 1 050 hPa 0 … 15 vol% 0 … 100 vol% 240 vol%*m 0.3 vol%*m at 600 °C 5% C 0 … 600 °C 950 … 1 050 hPa 0 … 5 vol% 0 … 100 vol% 75 vol%*m 0.1 vol%*m 2 %4) P 0 … 200 °C 950 … 5 000 hPa 0 … 5 vol% 0 … 100 vol% 75 vol%*m 0.1 vol%*m 2% A 0 … 150 °C 950 … 1 050 hPa 0 … 25 ppmv 0 … 500 ppmv 2 500 ppmv*m 0.5 ppmv*m 0.9 ppmv*m 2 % at 15 vol% H2O, 55 °C T 0 … 150 °C 950 … 1 050 hPa 0 … 25 ppmv 0 … 500 ppmv 2 500 ppmv*m 0.5 ppmv*m 0.9 ppmv*m 2 % at 15 vol% H2O, 55 °C E 250 … 350 °C 950 … 1 050 hPa 0 … 45 ppmv 0 … 500 ppmv 2 500 ppmv*m 0.9 ppmv*m at 250 °C 1.4 ppmv*m 2 % at 15 Vol% H2O, 250 °C F 300 … 400 °C 950 … 1 050 hPa 0 … 50 ppmv 0 … 500 ppmv 2 500 ppmv*m 1 ppmv*m at 300 °C 1.5 ppmv*m 2 % at 15 Vol% H2O, 300 °C L7) 0 … 400 °C8) 920 … 1 120 hPa 0 … 15 ppmv 0 … 500 ppmv 2 500 ppmv*m 0.5 ppmv*m 1.4 ppmv*m 2 % at 15 Vol% H2O, 250 °C A 0 … 150 °C 950 … 1 050 hPa 0 … 25 ppmv 0 … 100 ppmv 1 200 ppmv*m 0.5 ppmv*m 0.9 ppmv*m 2 % at 15 vol% H2O, 55 °C T 0 … 150 °C 950 … 1 050 hPa 0 … 25 ppmv 0 … 100 ppmv 1 200 ppmv*m 0.5 ppmv*m 0.9 ppmv*m 2 % at 15 vol% H2O, 55 °C E 250 … 350 °C 950 … 1 050 hPa 0 … 45 ppmv 0 … 100 ppmv 1 200 ppmv*m 0.9 ppmv*m at 250 °C 1.4 ppmv*m 2 % at 15 vol% H2O, 250 °C F 300 … 400 °C 950 … 1 050 hPa 0 … 50 ppmv 0 … 100 ppmv 1 200 ppmv*m 1 ppmv*m at 300 °C 1.5 ppmv*m 2 % at 15 vol% H2O, 300 °C L7) 0 … 400 °C8) 920 … 1 120 hPa 0 … 15 ppmv 0 … 100 ppmv 1 200 ppmv*m 0.5 ppmv*m 1.4 ppmv*m 2 % at 15 Vol% H2O, 250 °C A 0 … 150 °C 950 … 1 050 hPa 0 … 30 ppmv 0 … 6 000 ppmv 1 200 ppmv*m 0.6 ppmv*m 2.2 ppmv*m 5 % at 15% H2O, 55 °C T 120 … 210 °C 950 … 1 050 hPa 0 … 10 ppmv 0 … 60 ppmv H 150 … 250 °C 950 … 1 050 hPa 0 … 50 ppmv 0 … 6 000 ppmv 1 200 ppmv*m 1.0 ppmv*m at 150 °C 3.1 ppmv*m 5 % at 15 Vol% H2O, 150 °C A 0 … 150 °C 950 … 1 050 hPa 0 … 30 ppmv 0 … 100 ppmv 1 200 ppmv*m 0.6 ppmv*m 2.2 ppmv*m 5 % at 15% H2O, 55 °C T 120 … 210 °C 950 … 1 050 hPa 0 … 10 ppmv 0 … 60 ppmv 720 ppmv*m H 150 … 250 °C 950 … 1 050 hPa 0 … 50 ppmv 0 … 100 ppmv 1 200 ppmv*m 1.0 ppmv*m at 150 °C 3.1 ppmv*m 5 % at 15 vol% H2O, 150 °C Footnotes: See page 2/18. 2/16 Process gas pressure pmin … pmax Please note that the values for the detection limit and the maximum measuring range refer to a path length of 1 m. Longer path lengths will improve the detection limit, but not linearly. due to limiting effects such as dust load. The maximum applicable measuring ranges can only be used if permitted by the process conditions such as dust load. Siemens AP 01 · 2015 720 ppmv*m © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Standard application Effective optical path length: 0.3 … 12 m Dust load3): < 50 g/Nm3 Min. measuring range (with 1 m eff. opt. path length) Max. measuring range (usually also dependent on eff. opt. path length: see following column) (Max. measuring range x path length) (DL x path length) under standard conditions (DL x path Acculength) racy4) at 1 013 hPa with crossinterference of gas 1 Purging gas mode Gas 2 Gas 2 Gas 2 Gas 2 Standard Optional B6) E, F G, H Steam + air, N2 C D B N2 P D B N2 A C G Air T C G Air E E G Air F E G Air L C D Air Gas 1 Gas 2 Gas Appl. Gas 2 code code A O2 C NH3 NH3 H2O E HCl HCl D H2O F 1) 2) Gas 2 Purging gas medium A 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m 0.1 vol%*m 5% C G Air T 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m 0.1 vol%*m 5% C G Air E 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m at 250 °C 0.1 vol%*m at 250 °C 5% E G Air F 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m at 300 °C" 0.1 vol%*m at 300 °C" 5% E G Air L 0 … 5 vol% 0 … 30 vol% 250 vol%*m 0.1 vol%*m at 250 °C" 0.1 vol%*m at 250 °C" 5% C D Air A C G Air T C G Air H E G Air C G Air C G Air E G Air A 0 … 5 vol% 0 … 30 vol% 360 vol%*m 0.1 vol%*m T 0 … 5 vol% 0 … 30 vol% 360 vol%*m H 0 … 5 vol% 0 … 30 vol% 360 vol%*m 0.1 vol%*m at 150 °C 0.1 vol%*m 5% 0.1 vol%*m at 150 °C 5% Footnotes: See page 2/19. Siemens AP 01 · 2015 2/17 2 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Standard application Effective optical path length: 0.3 … 12 m Dust load2): < 50 g/Nm3 2 Process gas temperature Tmin … Tmax Gas Gas Gas Appl. 1 2 code code G HF HF H2O H Process gas pressure pmin … pmax Min. measuring range (with 1 m eff. opt. path length) Max. measuring (Max. measurrange ing range x (also dependent path length) on eff. opt. path length: see following column) (DL x path length) under standard conditions1) without cross-interference of other gases (DL x path Acculength) racy3) at 1 013 hPa with crossinterference of gas 2 Gas 1 Gas 1 Gas 1 Gas 1 0.6 ppmv*m 5 % at 15 vol% H2O, 55 °C Gas 1 Gas 1 A 0 … 150 °C 950 … 1 050 hPa 0 … 5 ppmv 0 … 1 500 ppmv 200 ppmv*m 0.1 ppmv*m H 150 … 250 °C 950 … 1 050 hPa 0 … 5 ppmv 0 … 1 500 ppmv 200 ppmv*m 0.11 ppmv*m 0.6 ppmv*m 5 % at 150 °C at 15 vol% H2O, 150 °C A 0 … 150 °C 950 … 1 050 hPa 0 … 5 ppmv 0 … 200 ppmv 200 ppmv*m 0.1 ppmv*m H 150 … 250 °C 950 … 1 050 hPa 0 … 5 ppmv 0 … 200 ppmv 200 ppmv*m 0.11 ppmv*m 0.6 ppmv*m 5 % at 150 °C at 15 vol% H2O, 150 °C 300 ppmv*m 1 500 ppmv 2 % *m at 50 vol% CO2, 20 °C 0.6 ppmv*m 5 % at 15 vol% H2O, 55 °C CO J C 0 … 600 °C 950 … 1 050 hPa 0 … 1.5 vol% 0 … 100 vol% 40 vol%*m CO CO2 K D 0 … 400 °C 800 …1 400 hPa 0 … 5 vol% 0 ... 200 vol%*m 0,1 vol%*m CO2 L A 0 … 150 °C 950 … 1 050 hPa 0 … 7.5 vol% 0 … 100 vol% 40 vol%*m 300 ppmv*m 2% H2O M A 0 … 150 °C 950 … 1 050 hPa 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m 5% T 0 … 150 °C 950 … 1 050 hPa 0 … 5 vol% 0 … 30 vol% 240 vol%*m 0.1 vol%*m 5% 0 … 100 vol% 0.5 Vol% at 50 vol% CO2, 20 °C 2 %5) 1) All technical data apply to an optical path distance of 1 m in a nitrogen atmosphere under standard conditions 25 °C (or Tmin) and 1 013 hPa. The effective detection limit, the measuring range and the accuracy can be influenced by process parameters such as pressure, temperature and gas composition. Not all combinations of maximum pressure and temperature can be realized with the minimum measuring ranges. If the process conditions deviate from the specifications of the standard applications, special applications are also possible on request. Please complete the application questionnaire which can be found on the Internet at www.siemens.com/insituquestionnaire. 2) At 0.3 m effective optical path length, average diameter of the dust particles: 15 µm, specific weight of the dust particles: 650 kg/m3 3) At least: Detection limit 4) Up to 200 °C, 5 % above this 5) The accuracy corresponds to intrinsic uncertainty according to IEC 61207: 2 % of MV (0 ... 200 °C); 2.5 % of MV (0 ... 400 °C); at best 0.25 vol%*m. 6) At high process temperatures, the use of an IR filter A5E00534668 is recommended for the CD 6 sensor (see page 2/26). 7) Suitable to measure NH3 according to the requirements of "Regulation No. 595/2009/EC on type-approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (EURO VI) from June 18, 2009 and its implementation standard the regulation 582/2011/EC from May 25, 2011" of the Commission of the European Community. 8) The analyzer can measure at temperatures above 400 °C up to 1 000 °C. As NH3 will decompose at higher temperature levels no analyzer specification can be given for these temperature ranges. 2/18 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 19" central unit Standard application Effective optical path length: 0.3 … 12 m Dust load3): < 50 g/Nm3 Min. measuring range (with 1 m eff. opt. path length) Max. measuring range (usually also dependent on eff. opt. path length: see following column) (Max. measuring range x path length) (DL x path length) under standard conditions1) 2) (DL x path Acculength) racy4) at 1 013 hPa with crossinterference of gas 1 Purging gas mode Gas 2 Gas 2 Gas 2 Gas 2 Standard Optional A C G Air H E G Air Gas 1 Gas 2 Gas Appl. Gas 2 code code G HF HF H2O H 0.1 vol%*m Gas 2 Purging gas medium 2 A 0 … 5 vol% 0 … 30 vol% 360 vol%*m 0.1 vol%*m 5% C G Air H 0 … 5 vol% 0 … 30 vol% 360 vol%*m 300 ppmv*m 300 ppmv*m 5 % at 200 °C at 200 °C E G Air E G Air, N2 C G Air J C K D CO2 L A C G Air H2O M A C G Air T C G Air CO CO CO2 0 … 10 vol% 0 … 100 vol% 0 ... 200 vol%*m 0.2 vol%*m 1 vol% at 50 vol% CO, 20 °C 5 %5) 1) At 20 °C, 1 013 hPa 2) If the smallest permissible process gas temperature of the application is Tmin > 20 °C, the detection limit refers to Tmin and standard pressure (1 013 hPa) 3) At 0.3 m optical path length, average diameter of the dust particles: 15 µm, specific weight of the dust particles: 650 kg/m3 4) At least: Detection limit 5) The accuracy corresponds to intrinsic uncertainty according to IEC 61207: 5 % of MV; at best 0.5 vol%*m. 6) At high process temperatures, the use of an IR filter A5E00534668 is recommended for the CD 6 sensor (see page 2/26). Special applications If the process conditions deviate from the specifications of the standard applications, special applications are also possible on request. Please complete the application questionnaire which can be found at www.siemens.com/insituquestionnaire on the Internet. Siemens AP 01 · 2015 2/19 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 ■ Overview Cross-duct sensors CD 6 and cables for non-Ex applications 2 The standard cross-duct sensor consists of a transmitter unit and a detector unit with the same dimensions. The transmitter unit provides a connector for the fiber-optic cable. The laser light is transmitted through this cable. The receiver unit contains a photodetector and an electronics PCB, and is connected to the detector unit by a sensor cable. The most important sensor purging configurations are presented below: Purging on the process side with moderate flow Is selected e.g. for pure gas applications, emission monitoring, inerting monitoring. The purging gas flow can be adjusted between 0 and approx. 120 l/min at each sensor head using a needle valve (included in delivery). The sensors are mounted onto flanges. The easiest way to avoid condensation and dust deposits on the sensor windows is to use a purging gas, e.g. with instrument air. Purging must be selected depending on the application. The cross-duct sensors can therefore be configured for the respective situation. The application reference table provides recommendations for suitable purging with standard applications. If a component is to be measured which is also present in measurable quantities in the purging medium - such as oxygen or moisture - it is necessary to use purging gases such as nitrogen, superheated process steam or similar. In such cases it is usually also necessary to purge the sensor heads, since the ambient air must also be displaced here out of the laser beam path. A differentiation is therefore made between purging on the process side and purging on the sensor side. Note: For measurement of O2 at gas temperatures above 600 °C, it may also be possible to tolerate air as the purging medium since its influence on the measurement can be compensated. Applications with oxygen (high-pressure) For oxygen measurements with a higher process gas pressure (1 to 5 bar), the sensor CD 6 can be used together with a highpressure window flange as the process connection. This window flange is also available in the standard sizes DN 65/PN 6, DN 80/PN 16 or ANSI 4"/150 lbs. The optical surface to the process is made of borosilicate glass. High-pressure window flanges can be equipped with window purging, but without purging tubes. Possible purge modes for the window flanges are "A-C" (no purging or moderate purging on the process side). Window flanges are tested for leakage before delivery using overpressure, and show leakage rates of less than 10-5 mbar⋅l/s. For ordering this application, the MLFB code of the central unit with the application code "P" must be selected. The process interface suitable for the sensors can be chosen by selection of the corresponding code in the 6th configurable position of the MLFB number. Moderate purging on the process side Purging on the process side with increased flow Through omission of needle valve. This type of purging is selected in crude gas applications with higher concentrations of particles and/or condensation as well as in non-purified flue gases in combustion plants. The purging gas flow is typically set between 200 and 500 l/min on each sensor head depending on the input pressure of the purging medium. Increased purging on the process side Purging on the process side with high flow Through use of air blower or dry process steam. Connectors with hose adapters are included in the delivery. An additional Swagelok adapter must be ordered if a high flow of steam or instrument air purging is required (option A27). This type of purging is selected in crude gas applications with very high concentrations of particles and/or condensation such as in the furnaces of combustion plants. If instrument air is not available, an air blower is also an alternative for purging in applications with lower demands. On the process side, dry steam can be used as the inert purging gas instead of nitrogen (Tmax 240 °C). The purging gas flow is automatically set between 500 and < 1 000 l/min on each sensor head depending on the purging air blower or the steam pressure. 2/20 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 2 Increased purging on the process side, with hose connection adapter Purging on sensor side Can be combined with any purging mode on the process side, and is always selected if the ambient air must never have an influence on the measurement. The volumes within the sensor head are then continuously purged with an O2-free gas (with H2O-free gas in the case of moisture measurement). Note With purging on the process side, it may be necessary to use non-return valves to ensure no process gas can enter the purging gas line in the event of failure of the purging gas supply. This applies especially in the case of cascaded process and sensor purging where there is otherwise the danger that, for example, corrosive process gases could enter the sensor enclosure. Sensor configuration with high purging on the process side, with 6 mm joint for use with steam, and with N2 purging on the sensor side The purging media used on the process side flow through purging gas tubes into the process gas flow. The tubes extend a few centimeters into the process area, and usually receive a flow of process gas from the side. This results in a wedge being generated in the inlet zone of the purging gas. The effective measuring path in the process gas is therefore well-defined as the distance between the ends of the two purging gas inlet tubes. Cross-duct sensor CD 6: Options and accessories Sensor alignment kit Includes a battery-operated visible light source, a centering aid with crosshair, and two hook spanners for opening the optics tube of the sensors. Please note: the sensor alignment kit is not explosion protected. 125 ... 375 mm typ. 0 ... 25 mm Process wall 2° (maximum) Process flange Process wall thickness (incl. insulation) DN 65/PN 6 or ANSI 4"/150 lbs Installation requirements for the cross-duct sensors CD 6 Siemens AP 01 · 2015 2/21 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Purging air blower Two purging air blowers are required to purge the sensor heads. Both 230 V AC and 115 V AC versions can be ordered. Electrical connections: 230 V AC 50 Hz or 115 V AC 60 Hz 2 Ø12 Air filter 1 ¼” hose connection CD 6 sensor for blower air purging Sensor configuration with purging air blower Flow cell (available on special application) For implementation of measuring configurations with bypass mode. The cell consists of a stainless steel tube whose internal surfaces are coated with PTFE to minimize surface effects. With an effective measuring path of 1 m, the inner volume is only 1.2 l, and fast gas displacement times can therefore be achieved. The flow of sample gas can be from the ends or from the center of the tube, since appropriate 6 mm joints are present here. The flow cell can be ordered in four configurations: • Unheated, including assembly for wall mounting • Unheated, including assembly for wall mounting and a 19" housing with an air jet pump with a delivery rate of max. 30 l/min • As above, but can be heated up to approx. 200 °C • As above, but can be heated up to approx. 200 °C and mounted on a rack with wheels and integrated 19" frame Optical bandpass filter (only for O2 CD 6) Serves to protect the light-sensitive detector in the receiver unit of the sensor from saturation by IR background radiation. Is used with measurements in very hot process gases (T > 1 000 °C) or with unavoidable appearances of flames in the measurement path. 2/22 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 ■ Technical specifications Accessories Cross-duct sensor CD 6 General information Purging Design Transmitter and detector units, connected by a sensor cable Materials Stainless steel (1.4305/303), aluminum Installation Vertical or parallel to the gas flow Laser protection class Class 1, safe to the eye Explosion protection II 1 G Ex ia op is IIC T4 Ga, II 1 D Ex ia op is IIIC T135 °C Da A defined leak rate can only be guaranteed when using highpressure window flanges. Otherwise it may be necessary for the owner to carry out an evaluation in accordance with ATEX DEMKO 06 ATEX 139648X; IECEx UL 13.0029X Nitrogen is permissible as the purging gas for the sensor side. Nitrogen, steam, air and gases which are not subject to the pressure equipment directive Cat. 2 are permissible as purging gases for the process side. 2 Purging with instrument air, N2 • Max. overpressure in the sensor < 500 hPa • Quality - Instrument air According to ISO 8573-1:2010 [2:3:3] Note: It is sufficient if the pressure condensation point is min. 10 K below the minimum ambient temperature. - Nitrogen Purity better than 99.7 %. For oxygen measurements, an O2 content < 0.01 % in the purging gas (optical path length ≥ 1 m, min. 5 % oxygen in the process gas) Design, enclosure Degree of protection IP65 Dimensions Diameter: 163, L: 450 mm Purging gas tube in mm 400 (370 net) x 44 x 40 800 (770 net) x 54 x 40 1 200 (1 170 net) x 54 x 40 Weight 2 x approx. 11 kg Blower purging Mounting DN 65/PN 6, DN 80/PN 16, ANSI 4"/150 lbs • Maximum counter pressure 40 hPa • Maximum flow rate 850 l/min • Power consumption 370 W • Degree of protection (fan) IP54, cover required to protect against rain • Maximum flow rate (process purging) 500 l/min • Dew point Benchmark: < -10 °C, condensation on the optics must be avoided Please note: • For purging tubes with a length of 800 and 1 200 mm, the wall thickness must not exceed 200 mm with DN 65/PN 6 connections. To carry out measurements with thicker walls, please contact Siemens. • The optimum adjustment of the flanges can change with high differences in temperature between the process and environment depending on the type of assembly. • Steam conditioning Overheated Electrical characteristics • Maximum temperature 240 °C • Minimum pressure > 4 000 hPa • Maximum pressure 16 000 hPa, refers to a volume flow of approx. 1 100 l/min Power supply Power consumption 24 V DC, supply from central unit via hybrid cable < 2 W during operation, max. 0.6 W with Ex configuration Steam purging Climatic conditions Sensor temperature • Non-Ex -20 ... +70 °C during operation, -30 ... +70 °C during storage and transportation • Ex -20 ... +60 °C during operation, -30 ... +70 °C during storage and transportation Humidity < 95 % RH, above dew point Pressure 800 ... 1 100 hPa Temperature range on the sensor side of the process interface (connection plate) -20 … +70 °C Measuring conditions Measurement path 0.3 ... 12 m (other lengths on request) Dust load The influence of dust is very complex and depends on the path length and particle size. The optical attenuation increases exponentially at longer path lengths. Smaller particles also have a large influence on the optical attenuation. With high dust load, long path length and small particle size, the technical support at Siemens should be consulted. Siemens AP 01 · 2015 2/23 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Hybrid and sensor cables General information Configuration hybrid cable Two optical fibers and two twisted copper wires in one cable for 24 V DC. Single-mode optical fiber configured at both ends with E2000 angle connectors. Multimode optical fiber configured at both ends with SMA connectors. Cable is flame-retardant, very good resistance to oil, gasoline, acids and alkalis, outer sheath UV-resistant Cable sheath Oil-resistant polyurethane Dimensions • For > 500 m, an external power supply must be additionally ordered • For installation in hazardous zones, non-intrinsically-safe cables have to be spatially separated from intrinsically-safe lines • Diameter < 8.5 mm • Length • Use in non-hazardous and Ex Zone 2: Up to 700 m • Use in Ex Zone 0 and Zone 1: Up to 250 m Weight 75 kg/km Maximum tensile force 200 N Maximum lateral pressure 1 000 N/cm Impact resistance 200 N/cm Maximum tensile strength 500 N Minimum bending radius 12 cm 2 Climatic conditions Ambient temperature -40 ... +70 °C during transport, storage and operation -5 ... +50 °C during laying Humidity < 95 % rel. humidity, above dew point (in operation and storage) 2/24 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Selection and ordering data LDS 6 in-situ gas analyzer Pair of sensors (cross-duct sensor) Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Explosion protection Without II 1 G Ex ia op is IIC T4 Ga, II 1 D Ex ia op is IIIC T135 °C Da Sensor type Standard cross-duct sensor Measured component O2 All gases except O2 Purging, process side Without purging Sensor side Without purging Air or N2, 1 to 2 l/min; incl. needle valve, 6 mm Swagelok Without purging Instrument air or N2 Reduced flow: 0 ... 120 l/min incl. needle valve, 6 mm Swagelok Air or N2 Increased flow: 200 ... 500 l/min incl. 6 mm Swagelok Air, fan or steam; high flow: > 500 l/min incl. 1¼" hose adapter Article No. 7MB6122- 7 7 7 7 7 - 7 7 7 7 0 1 2 A W A B C Air or N2, 1 to 2 l/min; incl. needle valve, 6 mm Swagelok Without purging D Air or N2, 1 to 2 l/min; incl. needle valve, 6 mm Swagelok Without purging F Air or N2, 1 to 2 l/min; incl. needle valve, 6 mm Swagelok Purging tubes, material No purging tubes Stainless steel, EN 1.4432/316L Purging tubes, length No purging tubes 400 mm 800 mm 1 200 mm 75 mm, e.g. for engine test rigs Process connection Stainless steel flange (1.4404/316L), connection dimension DN 65/PN 6, MAWP (PS) @ 20 °C: 0.05 MPa Stainless steel flange (1.4404/316L), connection dimension ANSI 4"/150 lbs, MAWP (PS) @ 20 °C: 7.25 psi Stainless steel flange (1.4404/316L), connection dimension DN 65/PN 6, MAWP (PS) @ 20 °C: 0.05 MPa, incl. enclosed welding flanges, e.g. for engine test rigs Pressure-resistant window flange (1.4404/316L, borosilicate glass), connection dimension DN 65/PN 6, MAWP (PS) @ 20 °C: 0.6 MPa Pressure-resistant window flange (1.4404/316L, borosilicate glass), connection dimension DN 80/PN 16, MAWP (PS) @ 20 °C: 1.6 MPa Pressure-resistant window flange (1.4404/316L, borosilicate glass), connection dimension ANSI 4"/150 lbs, MAWP (PS) @ 20 °C: 232 psi Hybrid cable Length [m] No hybrid cable Standard length 5 10 25 40 50 Customized length (specified in complete meters) E G H 0 1 0 1 2 3 4 0 1 2 3 4 5 X A B E G H Z Siemens AP 01 · 2015 2/25 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Selection and ordering data LDS 6 in-situ gas analyzer Pair of sensors (cross-duct sensor) Sensor connecting cable No sensor connecting cable Standard length 2 Customer-specific length Language (supplied documentation) German English French Spanish Italian Article No. 7MB6122- 7 7 7 7 7 - 7 7 7 7 Length [m] Selection and ordering data Additional versions Add "-Z" to Article No. and specify Order code 6 mm Swagelok adapter for purging with steam, purging modes G and H Acceptance test certificate 3.1 (leak test) in accordance with EN 10204 (only in combination with pressure-resistant window flanges) Acceptance test certificate 3.1 (material certificate) in accordance with EN 10204 (only in combination with pressure-resistant window flanges) Hybrid cable, customized length Sensor cable, customized length TAG label, customized inscription Additional units Purging air blower 230 V Purging air blower 115 V CD 6, sensor alignment kit Optical filter for reducing IR background radiation (flame filter), only O2 2/26 Siemens AP 01 · 2015 X A B E Z 5 10 25 (specified in complete meters) 0 1 2 3 4 Order code A27 C12 C13 P1Y Q1Y Y30 Article No. A5E00829151 A5E00829150 A5E00253142 A5E00534668 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 ■ Dimensional drawings Ø 163 2 395 395 105 105 Ø 163 Ø 44.5 at 400 length Ø 54 at 800, 1 200 length Cross-duct sensor CD 6, moderate purging (instrument air), version according to Article No. 7MB6122-**C1*-0***, dimensions in mm 400 (800, 1 200) 370 (770, 1 170) Process flange (provided by customer) 400 (800, 1 200) 370 (770, 1 170) Ø 6 mm fitting Process flange (provided by customer) Ø 44.5 at 400 length Ø 54 at 800, 1 200 length Cross-duct sensor CD 6, increased purging (instrument air), version according to Article No. 7MB6122-**E1*-0***, dimensions in mm Siemens AP 01 · 2015 2/27 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Ø 163 2 105 105 Ø 163 395 395 Test valve 1¼” hose (OD) Ø 44.5 at 400 length Ø 54 at 800, 1 200 length Cross-duct sensor CD 6, blower purging, version according to Article No. 7MB6122-**G1*-0***, dimensions in mm 2/28 Siemens AP 01 · 2015 Process flange (provided by customer) 400 (800, 1200) Process flange (provided by customer) 370 (770, 1170) 400 (800, 1 200) 370 (770, 1 170) Ø 6 mm fitting Ø 44.5 at 400 length Ø 54 at 800, 1200 length Cross-duct sensor CD 6, sensor and process side purging, version according to Article No. 7MB6122-**H1*-0***-Z A27, dimensions in mm © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Cross-duct sensor CD 6 Ø 163 105 431 2 Fitting for Ø 6 mm OD hose High pressure flange Check valve Cross-duct sensor CD 6, purged version according to Article No. 7MB6122-*WC14-2***, dimensions in mm CD 6 high-pressure sensor for oxygen, dimensions in mm Siemens AP 01 · 2015 2/29 © Siemens AG 2015 Continuous Gas Analyzers, in-situ LDS 6 Documentation ■ Selection and ordering data Manual Article No. LDS 6 manual 2 • German A5E00295893 • English A5E00295894 • French A5E00295895 • Italian A5E00295896 • Spanish A5E00362720 Suggestions for spare parts ■ Selection and ordering data Description Quantity for 2 years Quantity for 5 years Article No. CD 6, window module, quartz 1 2 A5E00338487 CD 6, window module, engine test rig, no purging 1 2 A5E00338490 CD 6, high-pressure window flange (1.4404/316L), DN 65/PN 6 1 2 A5E00534662 CD 6, high-pressure window flange (1.4404/316L), DN 80/PN 16 1 2 A5E00534663 CD 6, high-pressure window flange (1.4404/316L), ANSI 4"/150 lbs 1 2 A5E00534664 Gasket for CD 6 hybrid cable 1 2 A5E00853911 CD 6, sensor electronics FO InGaAs (version 2) 1 1 A5E01090409 CD 6, sensor electronics FO Ge, only HCl (version 2) 1 1 A5E01090413 CD 6, sensor electronics SW, only O2 1 1 A5E00338533 CD 6, sensor electronics ATEX SW, only O2 1 1 A5E00338563 CD 6, sensor electronics ATEX HCI 1 1 A5E00853896 CD 6, sensor electronics ATEX NH3, CO, CO2, HF, H2O, low gain 1 1 A5E00338572 CD 6, purging tube 400 mm 1.4432/316L 1 2 A5E00253111 CD 6, purging tube 800 mm 1.4432/316L 1 2 A5E00253112 CD 6, purging tube 1200 mm 1.4432/316L 1 2 A5E00253113 ■ More information For demanding applications it is recommended to keep purging tubes, window modules and detector electronics in stock (quantities stated per measuring point, i.e. per pair of sensors). 2/30 Siemens AP 01 · 2015 For the suitability of different parts (version 1 or version 2) please consult the instrument manual or contact Siemens directly. In general, all new analyzers are compatible with spare parts of version 2.