High Temperature Industrial VRS Magnetic Speed Sensors DESCRIPTION High Temperature VRS sensors are designed for use in applications where the sensor is exposed to temperatures up to 260 ºC [450 ºF]. Sealed Front-End versions are available for applications where the sensor is exposed to fluids, lubricants or adverse environmental conditions. 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: 5/8 in (M16), 3/8 in (M12), 1/4 in (8M) • Housing material/style: stainless steel threaded • Terminations: MS3106 connector, preleaded • Output voltages: 4.7 Vp-p to 125 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 hazardous location applications, as well as low-cost molded OEM versions. POTENTIAL APPLICATIONS • Engine RPM (revolutions per minute) measurement on aircraft, automobiles, boats, buses, trucks and rail vehicles • Motor RPM measurement on drills, grinders, lathes and automatic screw machines • Motor RPM measurement on precision camera, tape recording and motion picture equipment • Process speed measurement on food, textile, paper, woodworking, printing, tobacco and pharmaceutical industry machinery • Motor speed measurement of electrical generating equipment • Speed measurement of pumps, blowers, mixers, exhaust and ventilating fans • Flow measurement on turbine meters • Wheel-slip measurement on autos and locomotives • Gear speed measurement High Temperature 5/8 INCH (M16*) SENSORS (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. LOW RESISTANCE COILS FOR HIGH FREQUENCY APPLICATIONS General Specifications Parameter Characteristic Min. output voltage 25 Vp-p Parameter Inductance Coil resistance 65 Ohm typ. Gear pitch range Pole piece diameter Min. surface speed 2,69 mm [0.106 in] 0,50 m/s [20 in/s] typ. Max. operating frequency 50 kHz typ. Operating temp. range Mounting thread -55 ºC to 230 ºC [-67 ºF to 450 ºF] 5/8-18 UNF-2A Vibration N/A Termination MS3106 connector Catalog Listing 3010HTB Characteristic 30 mH max. 24 DP (module 1.06) or coarser Optimum actuator 20 DP (module 1.27) 70 g [2.5 oz] Parameter Characteristic Min. output voltage 125 Vp-p Parameter Inductance Characteristic 450 mH max. Coil resistance 1055 Ohm typ. Gear pitch range Pole piece diameter Min. surface speed 2,69 mm [0.106 in] Optimum actuator 24 DP (module 1.06) or coarser 20 DP (module 1.27) 0,25 m/s [10 in/s] typ. Max. operating frequency 15 kHz typ. Operating temp. range -55 ºC to 230 ºC [-67 ºF to 450 ºF] Vibration N/A Mounting thread 5/8-18 UNF-2A Termination MS3106 connector 2 Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 20 DP (module 1.27) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Weight HIGH RESISTANCE COILS FOR MAXIMUM OUTPUT VOLTAGE APPLICATIONS General Specifications Catalog Listing 3030HTB 3030HTB25 Test Condition Specifications Thread Length (A) 28 mm [1.1 in] 63 mm [2.5 in] Weight 70 g [2.5 oz] 84 g [3.0 oz] www.honeywell.com/sensing Test Condition Specifications Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 20 DP (module 1.27) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Industrial VRS Magnetic Speed Sensors 5/8 INCH (M16*) SENSORS CONTINUED (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. NOMINAL RESISTANCE COILS FOR LOW IMPEDANCE LOAD APPLICATIONS General Specifications Parameter Characteristic Min. output voltage 45 Vp-p Parameter Inductance Characteristic 85 mH max. Coil resistance 141 Ohm typ. Gear pitch range Pole piece diameter Min. surface speed 4,75 mm [0.187 in] Optimum actuator 12 DP (module 2.11) or coarser 8 DP (module 3.17) 0,38 m/s [15 in/s] typ. Max. operating frequency 40 kHz typ. Operating temp. range Mounting Thread -55 ºC to 230 ºC [-67 ºF to 450 ºF] 5/8-18 UNF-2A Vibration N/A Termination MS3106 Connector Catalog Listing 3040HTB 3040HTB25 Thread Length (A) 28 mm [1.1 in] 63 mm [2.5 in] Test Condition Specifications 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 1.25 kOhm resistance Weight 70 g [2.5 oz] 84 g [3.0 oz] Honeywell Sensing and Control 3 High Temperature 5/8 INCH SEALED FRONT-END SENSORS (All dimensions for reference only. mm/[in]) (No metric available.) NOMINAL RESISTANCE COILS FOR LOW IMPEDANCE LOADS APPLICATIONS General Specifications Parameter Min. output voltage Coil resistance 4 Characteristic 60 Vp-p Parameter Inductance Characteristic 85 mH max. 120 Ohm to 162 Ohm Gear pitch range Pole piece diameter Min. surface speed 4,39 mm [0.173 in] Optimum actuator 12 DP (module 2.11) or coarser 8 DP (module 3.17) 0,38 m/s [15 in/s] typ. Max. operating frequency 40 kHz typ. Operating temp. range Mounting Thread -54 ºC to 220 ºC [-65 ºF to 428 ºF] 5/8-18 UNF-2A Vibration N/A Termination MS3106 connector Catalog Listing MA243HT Weight 98 g [3.5 oz] www.honeywell.com/sensing Test Condition Specifications 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 1.25 kOhm resistance Industrial VRS Magnetic Speed Sensors 3/8 INCH (M12*) SENSORS (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. General Specifications Parameter Min. output voltage Coil resistance Test Condition Specifications Characteristic 15 Vp-p Parameter Inductance 110 Ohm max. Gear pitch range Pole piece diameter Min. surface speed 2,36 mm [0.093 in] Operating temp. range Mounting thread -40 ºC to 205 ºC [-40 ºF to 400 ºF] 3/8-24 UNF-2A Catalog Listing 3015HTB 3015HTB15 0,75 m/s [20 in/s] typ. Thread Length (A) 20 mm [0.8 in] 38 mm [1.5 in] Characteristic 31 mH max. 26 DP (module 0.98) or coarser Optimum actuator 24 DP (module 1.06) ferrous metal gear Max. operating 50 kHz typ. frequency Vibration N/A Termination 24 AWG Tefloninsulated leads Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 20 DP (module 1.27) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Weight 28 g [1.0 oz] 42 g [1.5 oz] Honeywell Sensing and Control 5 High Temperature 1/4 INCH (M8*) MINIATURE SENSORS (All dimensions for reference only. mm/[in]) *Contact Honeywell for availability of metric mounting thread versions. General Specifications Parameter 6 Characteristic Test Condition Specifications Parameter Characteristic Parameter Min. output voltage 4.7 Vp-p Inductance 13 mH max. Surface speed 25 m/s [1000 in/s] Coil resistance 137 Ohm max. Gear pitch range 36 DP (module 0.70) or coarser Gear 20 DP (module 1.27) Pole piece diameter 1 mm [0.040 in] Optimum actuator 28 DP (Module 0.90) ferrous metal gear Air gap 0,127 mm [0.005 in] Min. surface speed 0,89 m/s [35 in/s] typ. Max. operating frequency 70 kHz typ. Load resistance 100 kOhm Operating temp. range -40 ºC to 230 ºC [-40 ºF to 450 ºF] Vibration Mil-Std 202F Method 204D Mounting thread 1/4-40 UNS-2A Termination 30 AWG TeflonInsulated Leads Catalog Listing 3055A Weight 14 g [0.5 oz] www.honeywell.com/sensing Characteristic Industrial VRS Magnetic Speed Sensors 1/4 INCH SEALED FRONT-END SENSORS (All dimensions for reference only. mm/[in]) (No metric available.) General Specifications Test Condition Specifications Parameter Characteristic Min. output voltage 5.2 Vp-p Parameter Inductance Characteristic 85 mH max. Coil resistance Gear pitch range 36 DP (module 0.70) or coarser 28 DP (module 0.90) ferrous metal gear 70 kHz typ. 20 Ohm to 45 Ohm Pole piece 1 mm [0.040 in] diameter Min. surface speed 0,89 m/s [35 in/s] typ. Operating temp. range Mounting Thread -73 ºC to 230 ºC [-100 ºF to 450 ºF] 1/4-40 UNS-2A Catalog Listing MA3055 Weight 28 g [1 oz] Catalog Listing MA3055S10 Weight 28 g [1 oz] Optimum actuator Max. operating frequency Vibration Termination Parameter Characteristic Surface speed 25 m/s [1000 in/s] Gear 20 DP (module 1.27) Air gap 0,127 mm [0.005 in] Load 100 kOhm resistance Mil-Std 202F Method 204D 28 AWG Tefloninsulated leads Honeywell Sensing and Control 7 WARNING WARNING PERSONAL INJURY MISUSE OF DOCUMENTATION DO NOT USE these products as safety or emergency stop • devices or in any other application where failure of the The information presented in this product sheet is for reference only. Do not use this document as a product product could result in personal injury. installation guide. 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