© Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 General information ■ Overview ■ Design • 19" rack unit with 4 HU for installation - in hinged frames - in cabinets with or without telescopic rails • Front plate for service purposes can be pivoted down (laptop connection) • Connections for sample gas - Input: Clamping ring connection for a pipe diameter of 6 mm or ¼" - Output: Pipe connection with diameter 6 mm or ¼" • High-pressure and low-pressure versions • Catalytically active and inactive cell The OXYMAT 64 gas analyzer is used for the trace measurement of oxygen. ■ Benefits • • • • High linearity Compact design Open interface architecture (RS 485, RS 232, PROFIBUS) SIPROM GA network for maintenance and service information (option) ■ Application • Production of technical gases - Measurements in N2 and CO2 • Welding - Measurements in protective gases during welding of highly alloyed steels, titanium, etc. • Systems for air separation - Measurements in N2 and in inert gases (e.g. Ne, Ar) - Measurements in CO2 • Food production - Measurement in CO2 (e.g. breweries) • Electronics industry - Low-pressure version with pump • Flow soldering systems Display and control panel • Large LCD field for simultaneous display of - Measured value - Status bar - Measuring ranges • Contrast of the LCD field adjustable via the menu • Permanent LED backlighting • Washable membrane keyboard with five softkeys • Five-digit measured-value display (decimal point counts as one digit) • Menu-driven operation for parameterization, configuration, test functions, adjustment • Operator support in plain text • Graphical display of the concentration progression; time intervals parameterizable • Bilingual operating software German/English, English/Spanish, French/English, Spanish/English, Italian/English • Switchover from ppm measuring range to % measuring range Inputs and outputs • One analog output per medium (from 0, 2, 4 to 20 mA; NAMUR parameterizable) • Six binary inputs freely configurable (e.g. for measurement range switchover, processing of external signals from sample preparation) • Six relay outputs freely configurable (failure, maintenance request, maintenance switch, threshold alarm, external solenoid valves) • Two analog inputs configurable (e.g. correction of cross-interference, external pressure sensor) • Extension with eight additional binary inputs and eight additional relay outputs, e.g. for autocalibration with up to four calibration gases Communication RS 485 present in basic unit (connection from the rear). Options • RS 485/RS 232 converter • RS 485/Ethernet converter • RS 485/USB converter • Connection to networks via PROFIBUS DP/PA interface • SIPROM GA software as the service and maintenance tool 1/164 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 General information LED backlit graphic display and membrane keyboard with noticeable click Status line to display the analyzer status (programmable) Two code levels according to NAMUR (maintenance and specialist level) Easy operation menu controlusing the softkeys Display of concentrations as numbers and bargraph Display of current measuring ranges Display of start-of-scale and full-scale values ESC key to abort inputs Keyboard to enter values INFO key for help in plain text CLEAR key to delete inputs ENTER key to accept input values MEAS key to return to measurement mode OXYMAT 64, membrane keyboard and graphic display Designs – Parts wetted by sample gas, standard Gas path 19" rack unit Sample gas path Bushing Pipe inlet O2 sensor Bypass line Connection pieces Stainless steel, mat. no. 1.4571 Stainless steel ZrO2 ceramic FPM (Viton) PTFE (Teflon) Pressure sensor Enclosure Membrane Sensor adapter Bypass restrictor Polycarbonate SiO4 Aluminum Stainless steel, mat. no. 1.4571 Flow indicator Measurement pipe Variable area Suspension boundary Angle pieces Duran glass Duran glass, black PTFE (Teflon) FKM (Viton) Pressure switch Enclosure Membrane Polycarbonate NBR Siemens AP 01 · 2015 1/165 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 General information Gas path (high-pressure version) Legend for the gas path figure 1 Sample gas inlet; inlet pressure 5 Pressure sensor - without internal pressure regulator: 2 000 hPa (abs.), regulated 6 - with internal pressure regulator: 2 000 ... 6 000 hPa (abs.) 2 Sample gas outlet; sample gas flows off free of dynamic pressure Bypass restrictor 7 Pressure switch 8 Flow measuring tube 3 Pressure regulator (order version) 9 Purging gas connection 4 O2 sensor 10 Restrictor 9 1 2 3 10 10 5 4 O2 sensor (KAZ /KIZ) P 7 6 F 8 Gas path OXYMAT 64, high-pressure version The sample gas pressure (2 000 to 6 000 hPa) is regulated by the pressure regulator (3) at approx. 2 000 hPa or is provided by the operator with 2 000 hPa. This pressure is applied at the restrictor (10). The restrictor (10) reduces the pressure such that a sample gas flow of 15 to 30 l/h is created. This flow is subdivided via the sample gas restrictor (11) and the adjustable bypass restrictor (6) such that there is a sample gas flow of 7.5 l/h through the sensor. If the sample gas can flow off into the atmosphere unhampered, the sample gas pressure corresponds to the atmospheric pressure. If the sample gas flows off via an exhaust gas line, it works like a flow resistance. If the resulting dynamic pressure exceeds 100 hPa (rel.), a maintenance request is output. 1/166 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 General information Gas path (low pressure) Legend for the gas path figure 1 Sample gas inlet; flow 125 ml/min (7.5 l/h) 5 2 Sample gas outlet; sample gas flows off free of dynamic pressure 6 Flow measuring tube 3 O2 sensor 7 Purging gas connection 4 Pressure sensor 8 Restrictor 7 1 Pressure switch 2 8 3 O2 sensor (KAZ /KIZ) 4 P 5 F 6 Gas path OXYMAT 64, low-pressure version With the low-pressure version, the sample gas flow must be set externally to 125 ml/min. With a built-in pressure switch, the sample gas pressure is approx. 30 hPa above the current atmospheric pressure since the sample gas flows off via a restrictor. If the resulting dynamic pressure exceeds 100 hPa (rel.), a maintenance request is output. In order to reduce the 90 % time, we recommend installation of a bypass upstream of the gas inlet which then provides a faster exchange of gas. This is particularly important with long sample gas lines between the gas sampling point and the analyzer. Please make absolutely sure that the flow in the OXYMAT 64 does not exceed 125 ml/min. Siemens AP 01 · 2015 1/167 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 General information Gas path (low pressure with integrated sample gas pump) Legend for the gas path figure 1 Sample gas inlet 6 Flow measuring tube 2 Sample gas outlet; sample gas flows off free of dynamic pressure 7 Sample gas pump 3 O2 sensor 8 Restrictor 4 Pressure sensor 9 Purging gas connection 5 Needle valve 1 9 2 7 O2 sensor CIZ/CAZ 5 Oxygen sensor module, complete 1 3 Δp 8 4 6 F Low-pressure version with integral sample gas pump The device version "OXYMAT 64 low-pressure with pump" is equipped with a sample gas pump which automatically provides a constant sample gas flow of 125 ml/min through the sensor. By means of an internal bypass, the total flow of sample gas through the analyzer is increased to approx. 0.4 l/min. This measure significantly improves the analyzer’s response time. 1/168 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 General information ■ Function The measuring cell consists of a cylindrical (pipe-shaped) ZrO2 membrane. The sample gas (low O2 content) flows at a constant rate through the inside of the membrane, which is regulated at 650 °C. The exterior of the sensor is exposed to the ambient air (approx. 21 % O2). Both sides of the ZrO2 membrane are coated with thin platinum films that act as electrodes. This forms a solid, electrochemical cell. The amount of oxygen atoms ionized depends on the oxygen concentration at the electrodes. Measuring effect U = UA + RT/4F (In [O2,air] - In [O2] (equation 1) U measuring effect UA asymmetric voltage (voltage, at [O2] = [O2,air] T ceramic temperature [O2,air] O2 concentration in the air [O2] O2 concentration in sample gas Note The differences in concentration at each side means that a differential partial pressure prevails. Since ZrO2 conducts ions at 650 °C, ionic migration takes place in the direction of the lower partial pressure. The sample gas must be fed into the analyzer free of dust. Condensation should be avoided. Therefore, gas modified for the measuring tasks is necessary in most application cases. An oxygen gradient arises across the width of the ZrO2 membrane, which, according to equation (1), results in an electrical potential difference between the platinum electrodes. Calibration of the calibration point is carried out as with the other analyzers of Series 6 after a maximum of 14 days by connecting the calibration gas O2 in residual N2 at concentrations of approx. 60 to 90 % of the master measuring range. Defects in the crystal lattice, caused by contamination of the ZrO2 material with Y2O3 and/or CaO (introduced originally to prevent cracks forming in ceramic material) make it easier for O2 ions to diffuse in the ZrO2 grid. Catalytically active ZrO2 sensor (CAZ) The electrode material is made of platinum (Pt). This type of sensor has a higher cross-sensitivity when flammable accompanying gas components are present. Catalytically inactive ZrO2 sensor (CIZ) The catalytically inactive sensor has the same general design as the CAZ. The contacts and electrode surface inside the pipe are made of a specially developed material which largely prevents catalytic oxidation except of H2, CO and CH4. 1 2 3 4 5 6 7 Pipe made of ZrO2 and Y2O3 or ceramic CaO-mixed oxide Ceramic protective coating Sample electrode (Pt) Reference electrode (Pt) Thermoelement Contact to reference electrode Contact to sample electrode Calibration Contrary to the other analyzers of Series 6, the zero point calibration cannot be carried out using pure nitrogen, but with a "small" concentration of oxygen in nitrogen appropriate to the selected measuring range (e.g.: measuring range 0 to 10 vpm; calibration gas approx. 2 ppm O2 in residual N2). Essential characteristics • Four measurement ranges freely parameterizable, all measurement ranges linear • Galvanically isolated measurement value output 0/2/4 through 20 mA (also inverted) and as per NAMUR • Autoranging selectable; possibility of remote switching • Storage of measured values possible during adjustments • Wide range of selectable time constants (static/dynamic noise suppression); i.e. the response time of the device can be adapted to the respective measuring task • Easy handling thanks to menu-driven operation • Low long-term drift • Two control levels with their own authorization codes for the prevention of accidental and unauthorized operator interventions • Automatic, parameterizable measuring range calibration • Operation based on the NAMUR recommendation • Monitoring of the sample gas (via pressure switch) • Customer-specific analyzer options such as: - Customer acceptance - TAG labels - Drift recording • Simple handling using a numerical membrane keyboard and operator prompting • Smallest span 0 to 10 vpm O2 • Largest span 0 to 100 % (testing with ambient air) • Internal pressure sensor for correction of the influence of sample gas pressure fluctuations OXYMAT 64, principle of operation Siemens AP 01 · 2015 1/169 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 General information Influence of interfering gas Catalytically active sensor (CAZ) Very large cross-interference of all combustible accompanying gases. Thus not suitable for use with combustible accompanying gases! Catalytically inactive sensor (CIZ) There is only a slight cross-interference in the case of accompanying gases with a concentration in the range of the O2 concentration. H2, CO and CH4 still have a noticeable effect in the case of flammable accompanying gas components. Measured component / interfering gas Diagonal gas offset 78 vpm O2/140 vpm CO -6.1 vpm 10 vpm O2/10 vpm CO -0.6 vpm 74 vpm O2 / 25 vpm CH4 -0.3 vpm 25 vpm O2 / 357 vpm CH4 -1.1 vpm 25 vpm O2 / 70 vpm H2 -3 vpm 5 vpm O2 / 9.6 vpm H2 -0.55 vpm 170 vpm O2 / 930 vpm C2H4 -118 vpm Examples of typical diagonal gas offsets on a catalytically inactive sensor The listed deviations depend on the exemplar and can deviate up to ± 0.2 vpm. The actual deviation must be determined individually or the error will be eliminated through a corresponding calibration measure (displacement of the diagonal gas offset). 1/170 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 19" rack unit ■ Technical specifications General Measurement ranges 4, internally and externally switchable; automatic measuring range switchover also possible Smallest possible span (relating to 0 ... 10 vpm O2 sample gas pressure 1 000 hPa absolute, 0.5 l/min sample gas flow, and 25 °C ambient temperature) Largest possible measuring span 0 ... 100 % Operating position Front wall vertical Conformity CE mark in accordance with EN 50081-1, EN 50082-2 and RoHS Design, enclosure Measuring response (referred to sample gas pressure 1 013 hPa absolute, sample gas flow 7.5 l/min, and ambient temperature 25 °C) Output signal fluctuation < ± 1 % of the smallest possible measuring range according to rating plate, with electronic damping constant of 1 s Zero point drift < ± 1 % of the current span/month Measured-value drift < ± 1 % of the current span/month Repeatability < 3 % of the current measuring span Detection limit 1 % of current measuring range, < 0.1 vpm in measuring range 0 ... 10 vpm Linearity error < 2 % of the current measuring span Degree of protection IP20 according to EN 60529 Influencing variables (relating to sample gas pressure 1 013 hPa absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature) Weight Approx. 11 kg Ambient temperature Electrical characteristics EMC (Electromagnetic Compatibility) In accordance with standard requirements of NAMUR NE21 (08/98) and EN 61326 Electrical safety In accordance with EN 61010-1, overvoltage category II Power supply 100 ... 120 V AC (nominal range of use 90 ... 132 V), 48 ... 63 Hz or 200 ... 240 V AC (nominal range of use 180 ... 264 V), 48 ... 63 Hz Power consumption Approx. 37 VA Fuse values 100 ... 120 V: 1.0T/250 200 ... 240 V: 0.63T/250 Gas inlet conditions Sample gas flow • through the sensor 7.5 l/h • Overall consumption 15 ... 30 l/h Permissible sample gas pressure • without internal pressure regulator 2 000 hPa (abs.) < 2 %/10 K referred to current measuring span Sample gas pressure only possible • When pressure compensation has been switched off: < 1 % of if the sample gas can flow out into current span/1 % pressure the ambient air change • When pressure compensation has been switched on: < 0.2 % of current span/1 % pressure change Residual gases, deviation from zero point • Catalytically active sensor (CAZ) Only gases with non-combustible residual gas components can be introduced • Catalytically inactive sensor (CIZ) Residual gas concentration of 10 vpm H2; CO and CH4 have a lower cross-interference; higher HCs are negligible Sample gas flow < 2 % of the smallest possible span with a change in flow of 10 ml/min Power supply < 0.1 % of the current measuring range with rated voltage ± 10 % • with internal pressure regulator 2 000 ... 6 000 hPa (abs.) Electrical inputs and outputs Sample gas temperature Min. 0 ... max. 50 °C, but above the dew point Analog output Sample gas humidity < 1 % relative humidity 0/2/4 ... 20 mA, 4 … 20 mA (NAMUR), isolated; max. load 750 Ω Relay outputs 6, with changeover contacts, freely parameterizable, e.g. for measuring range identification; load: 24 V AC/DC/1 A, isolated Analog inputs 2, dimensioned for 0/2/4 … 20 mA for external pressure sensor and correction of influence of residual gas (correction of cross-interference) Binary inputs 6, designed for 24 V, isolated, freely parameterizable, e.g. for measurement range switchover Serial interface RS 485 Options AUTOCAL function each with 8 additional binary inputs and relay outputs, also with PROFIBUS PA or PROFIBUS DP Dynamic response Warm-up period At room temperature < 30 min (the technical specification will be met after 2 hours) Damping (electrical time constant) 0 ... 100 s, parameterizable Dead time (high-pressure version) 10 ... 30 s (purging time of the gas path in the unit at 125 ml/min) Dead time (low-pressure version without pump) <5s Dead time (low-pressure version with pump) < 10 s Time for device-internal signal processing <1s Pressure correction range Pressure sensor internal 800 ... 1 100 hPa (abs.) Climatic conditions Permissible ambient temperature -40 ... +70 °C during storage and transportation, 5 … 45 °C during operation Permissible humidity < 90 % relative humidity as annual average, during storage and transportation (must not fall below dew point) Siemens AP 01 · 2015 1/171 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 19" rack unit Selection and ordering data Article No. OXYMAT 64 gas analyzer 19" rack unit for installation in cabinets 7MB2041- 7 7 7 1 7 - 7 A 7 7 Cannot be combined Click on the Article No. for the online configuration in the PIA Life Cycle Portal. Sensor ZrO2: Catalytically active cell (CAC) ZrO2: Catalytically inactive cell (CIC) 0 1 ZrO2: Catalytically active cell (CAC); with differential pressure sensor ZrO2: Catalytically inactive cell (CIC); with differential pressure sensor 3 0 1 2 2 3 Sample gas pressure High pressure, without pressure regulator High pressure, with pressure regulator 2 000 hPa (abs.) 2 000 ... 6 000 hPa (abs.) A B Low pressure, with pump Low pressure, without suction pump Atmosphere Atmosphere D A B C C D Gas connection Input Output Clamping ring connection 6 mm Fittings 6 mm A Input Output Clamping ring connection ¼" Fitting ¼" B Add-on electronics Without AUTOCAL function • With 8 additional digital inputs/outputs • With 8 additional digital inputs/outputs and PROFIBUS PA interface • With 8 additional digital inputs/outputs and PROFIBUS DP interface 0 1 6 7 Power supply 100 to 120 V AC, 48 to 63 Hz 0 200 to 240 V AC, 48 to 63 Hz 1 Explosion protection A Without Language German English French Spanish Italian 0 1 2 3 4 Additional versions Order code Add "-Z" to Article No. and specify Order code Telescopic rails (2 units) A31 TAG labels (specific lettering based on customer information) B03 Clean for O2 service (specially cleaned gas path) Y02 Measuring range indication in plain text, if different from the standard setting Y11 Special setting (only in conjunction with an application no., e.g. extended measuring range) Y12 Extended special setting (only in conjunction with an application no., e.g. determination of cross-interferences) Y13 Accessories Article No. RS 485/Ethernet converter A5E00852383 RS 485/RS 232 converter C79451-Z1589-U1 RS 485/USB converter A5E00852382 AUTOCAL function each with 8 digital inputs/outputs C79451-A3480-D511 AUTOCAL function 8 digital inputs/outputs each and PROFIBUS PA A5E00057307 AUTOCAL function 8 digital inputs/outputs each and PROFIBUS DP A5E00057312 Set of Torx screwdrivers A5E34821625 1/172 Siemens AP 01 · 2015 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 19" rack unit ■ Dimensional drawings 384.5 351.5 27.5 15.6 4 128 173 82 149.5 172 37.7 101.6 177 s M4 86.5 2;<0$7 465 483 132 411.5 104 320 345 36 0 440 OXYMAT 64, 19" rack unit, size in mm Siemens AP 01 · 2015 1/173 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 19" rack unit ■ Schematics Pin assignment (electrical connections) &RQQHFWRU68%')56 0 *1' 9 0 *1' 5B/HYHO1 1& 5'7'1 5'7'3 5B/HYHO3 1& 1& *1' ,WLVSRVVLEOHWRFRQQHFWEXV WHUPLQDWLQJUHVLVWRUVWRSLQVDQG 68%')FRQQHFWRU 0 0 0 0 *1' 1& 1& $QDORJRXWSXW3 $QDORJRXWSXW1 1& 1& $QDORJLQSXW3 $QDORJLQSXW1 $QDORJLQSXW3 $QDORJLQSXW1 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXWWR1 *1' $QDORJRXWSXWVLVRODWHG DOVRIURPHDFKRWKHU5/ื˖ 3UHVVXUHFRUUHFWLRQ 3UHVVXUHFRUUHFWLRQ &RUUHFWLRQRI FURVVLQWHUIHUHQFH &RUUHFWLRQRI FURVVLQWHUIHUHQFH 1RQLVRODWHGDQDORJLQSXWV P$˖RU 9ORZUHVLVWDQFH 68%')FRQQHFWRU 0 *1' %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXW3 %LQDU\LQSXWWR1 ,VRODWHGYLDRSWRFRXSOHU 99 99 5HOD\ 5HOD\ 5HOD\ 5HOD\ &RQWDFWORDG PD[9$$&'& 7KHUHOD\LVFXUUHQWIUHHIRU WKHUHOD\FRQWDFW SRVLWLRQVKRZQ 5HOD\ 5HOD\ *1' 0 OXYMAT 64, 19" rack unit, pin assignment 1/174 Siemens AP 01 · 2015 1RWH $OOFDEOHVWRWKHFRQQHFWRUVRUWHUPLQDO EORFNVPXVWEHVKLHOGHGDQGUHVWDJDLQVWWKH HQFORVXUHSRWHQWLDO © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 19" rack unit Connector SUB-D 37F (option) M 37 19 18 36 17 35 16 34 15 33 14 32 GND NC NC Binary input 14-P Binary input 13-P Binary input 12-P Binary input 11-P Binary input 10-P Binary input 9-P Binary input 8-P Binary input 7-P Binary input 7 to 14-N Isolated via optocoupler "0" = 0 V (0 ... 4.5 V) "1" = 24 V (13 ... 33 V) 13 31 Relay 14 12 30 11 Relay 13 29 10 28 Relay 12 9 27 8 Relay 11 Contact load max. 24 V/1 A, AD/DC Relay 10 for shown relay contact position, the relay has zero current 26 7 25 6 24 5 Relay 9 23 4 22 Relay 8 3 21 20 M Connector SUB-D 9F-X90 PROFIBUS DP 5 9 4 8 3 2 Relay 7 1 GND Optional Connector SUB-D 9M-X90 PROFIBUS PA DGND CNTR-N CNTR-P/direction control RxD/TxD-N (A) RxD/TxD-P (B) 7 5 9 4 8 3 PA-N(-) PA-P(+) 7 2 6 2 VP /+ 5 V 1 6 1 1RWH $OOFDEOHVWRWKHFRQQHFWRUVRUWHUPLQDOEORFNVPXVWEH VKLHOGHGDQGUHVWDJDLQVWWKHHQFORVXUHSRWHQWLDO OXYMAT 64, 19" rack unit, pin assignment of the AUTOCAL plate and PROFIBUS plug Siemens AP 01 · 2015 1/175 1 © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 1 19" rack unit Gas connections and pin assignment Sample gas outlet Sample gas inlet 2 15-pin connector: Binary inputs and analog inputs/outputs 1 9-pin connector: RS 485 Purge gas inlet 9-pin interface connector (Optional): e.g. PROFIBUS Mains connection and miniature fuses Gas connections Sample gas inlet: Clamping ring connection 6 mm or ¼" Sample gas outlet: Fittings 6 mm or ¼" OXYMAT 64, 19" rack unit, gas connections and electrical connections 1/176 Siemens AP 01 · 2015 25-pin connector: Binary inputs and relay outputs 37-pin connector: Binary inputs and relay outputs (optional) © Siemens AG 2015 Continuous Gas Analyzers, extractive OXYMAT 64 Documentation ■ Selection and ordering data Operating instructions Article No. OXYMAT 64 Gas analyzer for measuring trace oxygen • German A5E00880382 • English A5E00880383 • French A5E00880384 • Spanish A5E00880385 • Italian A5E00880386 Gas analyzers of Series 6 and ULTRAMAT 23 Schnittstelle/Interface PROFIBUS DP/PA • German and English A5E00054148 Suggestions for spare parts ■ Selection and ordering data Description 7MB2041 2 years (quantity) 5 years (quantity) Article No. Pressure regulator as spare part x – 1 A5E01008972 Flowmeter x – 1 A5E01061561 Adapter plate, LC display/keypad x 1 1 C79451-A3474-B605 LC display x – 1 W75025-B5001-B1 Connector filter x – 1 W75041-E5602-K2 Fuse, T 0.63 A, line voltage 200 … 240 V x 2 4 W79054-L1010-T630 Fuse, T 1 A, line voltage 100 … 120 V x 2 4 W79054-L1011-T100 Siemens AP 01 · 2015 1/177 1