Hazardous Location Industrial VRS Magnetic Speed Sensors DESCRIPTION Hazardous Location VRS sensors are designed for use in locations where explosion-proof or intrinsically safe sensors are required. Passive VRS (Variable Reluctance Speed) Magnetic Speed sensors are simple, rugged devices that do not require an external voltage source for operation. A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal target near the sensor’s pole piece (sensing area) changes the flux of the magnetic field, dynamically changing its strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals. FEATURES Self-powered operation Direct conversion of actuator speed to output frequency Simple installation No moving parts Designed for use over a wide range of speeds Adaptable to a wide variety of configurations Customized VRS products for unique speed sensing applications Housing diameters: 3/4 in, 5/8 in Housing material/style: stainless steel threaded Terminations: MS3106 connector, preleaded Output voltages: 30 Vp-p to 60 Vp-p The output signal of a VRS sensor is an ac voltage that varies in amplitude and wave frequency as the speed of the monitored device changes, and is usually expressed in peak to peak voltage (Vp-p). One complete waveform (cycle) occurs as each target passes the sensor’s pole piece. If a standard gear were used as a target, this output signal would resemble a sine wave if viewed on an oscilloscope. Honeywell also offers VRS sensors for general purpose, high output, power output, high resolution and high temperature, as well as low-cost molded versions. POTENTIAL APPLICATIONS Engine RPM (revolutions per minute) measurement on aircraft, automobiles, boats, buses, trucks and rail vehicles Motor RPM on oil and gas drilling equipment and machinery Motor RPM measurement on drills, grinders, lathes and automatic screw machines Process speed measurement on food, textile, paper, woodworking, printing, tobacco and pharmaceutical industry machinery Motor speed measurement of electrical generating equipment in grain elevators, sawmills and other potentially explosive environments Speed measurement of pumps, blowers, mixers, exhaust Gear speed measurement Hazardous Location 3/4 INCH EXPLOSION-PROOF SENSORS (All dimensions for reference only. mm/[in]) When properly installed using the explosion containment method, all 3070X and catalog listings on this page are certified for use in hazardous locations as follows: Class I, Groups A, B, C, D; Class II Groups E, F, G; Class III. These catalog listings have been tested to and meet the requirements of applicable U.S. and Canadian specifications for the locations described above. General Specifications Test Condition Specifications Parameter Characteristic Min. output voltage 60 Vp-p Parameter Inductance Characteristic 115 mH max. Coil resistance 191 Ohm to 280 Ohm Gear pitch range Pole piece diameter Min. surface speed Operating temp. range 4,75 mm [0.187 in] Optimum actuator 0,38 m/s [15 in/s] typ. Max. operating frequency Vibration 12 DP (module 2.11) or coarser 8 DP (module 3.17) ferrous metal gear 40 kHz typ. Mounting thread 3/4-20 UNEF-2A Catalog Listing 3070A 3070A35 -73 ºC to 93 ºC [-100 ºF to 200 ºF] Thread Weight Length (A) 45 mm [1.8 in] 294 g [10.5 oz] 88 mm [3.5 in] 322 g [11.5 oz] Termination Mil-Std 202F Method 204D 18 AWG PVC-Insulated Leads 24,05 [1.00] A www.honeywell.com/sensing 31,75 [1.250] 3000 MIN [120.00] 1/2-14 NPT BLIND END SHELL POLE PIECE 2 Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 8 DP (module 3.17) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Industrial VRS Magnetic Speed Sensors 5/8 INCH EXPLOSION-PROOF SENSORS (All dimensions for reference only. mm/[in]) When properly installed using the explosion containment method, the 3090X catalog listings on this page are certified for use in hazardous locations as follows: Class I, Groups A, B, C, D; Class II Groups E, F, G; Class III. These catalog listings have been tested to and meet the requirements of applicable U.S. and Canadian specifications for the locations described above. The catalog listings on this page conform to standards: II 3 G EEx nA II T6. General Specifications Test Condition Specifications Parameter Characteristic Min. output voltage 60 Vp-p Parameter Inductance Characteristic 115 mH max. Coil resistance 191 Ohm to 280 Ohm Gear pitch range Pole piece diameter Minimum surface speed 4,75 mm [0.187 in] Optimum actuator 0,38 m/s [15 in/s] typ. Maximum operating frequency 12 DP (module 2.11) or coarser 8 DP (module 3.17) ferrous metal gear 40 kHz typ. Operating temp. range Mounting thread -73 ºC to 93 ºC [-100 ºF to 200 ºF] 5/8-20 UNF-2A Vibration Catalog Listing 3090A 3090A35 Thread Length (A) 45 mm [1.8 in] 88 mm [3.5 in] Weight Termination Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 8 DP (module 3.17) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Mil-Std 202F Method 204D 18 AWG PVC-insulated leads 24,5 [1.00] A 31,75 [1.250] 3000 MIN [120.00] 1/2-14 NPT 280 g [9.0 oz] 366 g [10.0 oz] BLIND END SHELL POLE PIECE Honeywell Sensing and Control 3 Hazardous Location 5/8 INCH (M16*) INTRINSICALLY SAFE VRS SENSORS (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. When properly installed using the intrinsic safety protection method connected per the control drawings on pages 6 and 7, catalog listings 3042A is intrinsically safe for hazardous locations as follows: Class I, Groups A, B, C, D. This product has been tested to and meets the requirements of applicable U.S. and Canadian specifications for the locations described above. General Specifications Test Condition Specifications Parameter Characteristic Min. output voltage 30 Vp-p Parameter Inductance Characteristic 26 mH max. Coil resistance 150 Ohm Gear pitch range Pole piece diameter Min. surface speed 3,9 mm [0.156 in] Optimum actuator 0,38 m/s [15 in/s] typ. Max. operating frequency 16 DP (module 1.58) or coarser 12 DP (module 3.17) ferrous metal gear 40 kHz typ. Operating temp. range Mounting thread -55 ºC to 120 ºC [-67 ºF to 250 ºF] 5/8-18 UNF-2A Vibration N/A Termination MS3106 connector Catalog Listing 3042A Weight 70 g [2.5 oz] 19,05 [0.750] 8,0 [0.312] 0,76 [0.030] Ø13,84 [0.545] ‘ 4 www.honeywell.com/sensing 36.5 [1.437] Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 8 DP (module 3.17) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance 28,12 [1.107] Ø18,29 [0.720] B A + - Industrial VRS Magnetic Speed Sensors 5/8 INCH (M16*) INTRINSICALLY SAFE VRS SENSORS (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. When properly installed using the intrinsic safety protection method connected per the control drawings on pages 6 and 7, catalog listing 3042H20 is intrinsically safe for hazardous locations as follows: Class I, Groups A, B, C, D; Class II Groups E, F, G; Class III. This product has been tested to and meets the requirements of applicable U.S. and Canadian specifications for the locations described above. General Specifications Test Condition Specifications Parameter Characteristic Min. output voltage 30 Vp-p Parameter Inductance Characteristic 26 mH max. Coil resistance 150 Ohm Gear pitch range Pole piece diameter Min. surface speed Operating temp. range 3,9 mm [0.156 in] Optimum actuator 0,38 m/s [15 in/s] typ. Max. operating frequency Vibration 16 DP (module 1.58) or coarser 12 DP (module 3.17) ferrous metal gear 40 kHz typ. Mounting thread 5/8-18 UNF-2A Catalog Listing 3042AH20 -55 ºC to 120 ºC [-67 ºF to 250 ºF] Weight 140 g [5.0 oz] Termination 25,4 [1.00] N/A 18 AWG PVC-insulated leads 50 [2.0] 0,51 [0.020] Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 8 DP (module 3.17) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance 31,75 [1.250] 3000 MIN [120.00] 1/2-14 NPT Honeywell Sensing and Control 5 Hazardous Location CONTROL DRAWING FOR SINGLE CHANNEL BARRIERS Hazardous Location Non-hazardous Location Speed Sensor Intrinsic Safety Barrier HAZARDOUS LOCATIONS GENERAL NOTES Catalog listing 3042H20: 1. For jurisdictions requiring certification to the applicable Class I, Groups A, B, C, D Canadian standards, the barrier must be CSA Certified Class II, Groups E, F, G and the system must be installed in accordance with the Canadian Electrical Code Part 1. Class III 2. For jurisdictions requiring certification to the applicable Occupational Safety and Health Administration (OSHA) Catalog listing 3042A: standards, the barrier must be CSA NRTL or equivalent Class I, Groups A, B, C, D and the system must be installed in accordance with the ENTITY PARAMETERS National Electrical Code (NEC), article 504 or Vmax = 24 V, Imax = 35 mA, Li = 26 mH, Ci = 0 μF ANSI/NFPA 70. Any barrier (see General Notes) with entity parameters connected in accordance with barrier manufacturers SENSOR GROUNDING instructions of: Catalog listing 3042A: Sensor housing must be connected to Vmax > Voc Ca > Ci + cable capacitance Imax > Isc La > Li + cable inductance intrinsically safe system ground during installation. Catalog listing 3042H20: Green wire must be connected to intrinsically safe system ground. SYSTEM PARAMETERS Any barrier (see General Notes) having one of the following Exia = Intrinsically Safe, Sécurité Intrinsèque specified parameters: Vmax 6 Rmin Vmax Rmin Vmax Rmin 30 707 20 421 10 136 25 580 15 278 5 1 www.honeywell.com/sensing Industrial VRS Magnetic Speed Sensors CONTROL DRAWING FOR DUAL CHANNEL BARRIERS Non-hazardous Location Hazardous Location Speed Sensor Ground Intrinsic Safety Barrier . HAZARDOUS LOCATIONS GENERAL NOTES Catalog listing 3042H20: 1. For jurisdictions requiring certification to the applicable Class I, Groups A, B, C, D Canadian standards, the barrier must be CSA Certified Class II, Groups E, F, G and the system must be installed in accordance with the Class III Canadian Electrical Code Part 1. 2. For jurisdictions requiring Certification to the applicable Catalog listing 3042A: Occupational Safety and Health Administration (OSHA) Class I, Groups A, B, C, D standards, the barrier must be CSA NRTL or equivalent and the system must be installed in accordance with the ENTITY PARAMETERS National Electrical Code (NEC), article 504 or Vmax = 24 V, Imax = 35 mA, Li = 26 mH, Ci = 0 μF ANSI/NFPA 70. Any barrier (see General Notes) with entity parameters connected in accordance with barrier manufacturers SENSOR GROUNDING instructions of: Catalog listing 3042A: Sensor housing must be connected to Vmax > Voc Ca > Ci + cable capacitance Imax > Isc La > Li + cable inductance intrinsically safe system ground during installation. Catalog listing 3042H20: Green wire must be connected to SYSTEM PARAMETERS intrinsically safe system ground. Any barrier (see General Notes) having one of the following specified parameters: Vmax Rmin Exia = Intrinsically Safe, Sécurité Intrinsèque Vmax Rmin Vmax Rmin 30 1414 20 842 10 272 25 1160 15 556 5 2 Honeywell Sensing and Control 7 WARNING WARNING PERSONAL INJURY MISUSE OF DOCUMENTATION DO NOT USE these products as safety or emergency stop The information presented in this product sheet is for devices or in any other application where failure of the reference only. Do not use this document as a product product could result in personal injury. installation guide. Failure to comply with these instructions could result in Complete installation, operation, and maintenance death or serious injury. information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in WARRANTY/REMEDY Honeywell warrants goods of its manufacture as being free of death or serious injury. defective materials and faulty workmanship. 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