Power Output Industrial VRS Magnetic Speed Sensors DESCRIPTION The output signal of a VRS sensor is an ac voltage that varies Power Output VRS sensors are designed for driving low in amplitude and wave frequency as the speed of the resistance loads at large air gaps in applications where larger monitored device changes, and is usually expressed in peak to actuators may be used. peak voltage (Vp-p). Passive VRS (Variable Reluctance Speed) Magnetic Speed One complete waveform (cycle) occurs as each target passes sensors are simple, rugged devices that do not require an the sensors pole piece. If a standard gear were used as a external voltage source for operation. target, this output signal would resemble a sine wave if viewed on an oscilloscope. A permanent magnet in the sensor establishes a fixed magnetic field. The approach and passing of a ferrous metal Honeywell also offers VRS sensors for general purpose, high target near the sensors pole piece (sensing area) changes the output, high resolution, high temperature and hazardous flux lines of the magnetic field, dynamically changing its location applications, as well as low-cost molded versions. strength. This change in magnetic field strength induces a current into a coil winding which is attached to the output terminals. FEATURES POTENTIAL APPLICATIONS Self-powered operation Engine RPM (revolutions per minute) measurement on Direct conversion of actuator speed to output frequency aircraft, automobiles, boats, buses, trucks and rail Simple installation vehicles No moving parts Motor RPM measurement on drills, grinders, lathes and Designed for use over a wide range of speeds automatic screw machines Adaptable to a wide variety of configurations Motor RPM measurement on precision camera, tape Customized VRS products for unique speed sensing recording and motion picture equipment applications Process speed measurement on food, textile, paper, Housing diameter: 5/8 in (M16) woodworking, printing, tobacco and pharmaceutical Housing material/style: stainless steel threaded industry machinery Terminations: MS3106 connector, preleaded Motor speed measurement of electrical generating Output voltage: 70 Vp-p 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 Power Output 5/8 INCH (M16*) SENSORS (All dimensions for reference only. mm/ in ) *Contact Honeywell for availability of metric mounting thread versions. General Specifications Test Condition Specifications Parameter Characteristic Parameter Characteristic Parameter Characteristic Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s 1000 in/s Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11) Gear 8 DP or coarser (module 3.17) Pole piece 4,75 mm 0.187 in Optimum actuator 8 DP (module 3.17) Air gap 0,127 mm diameter ferrous metal gear 0.005 in Min. surface 0,38 m/s 15 in/s typ. Max. operating 40 kHz typ. Load 1.25 kOhm speed frequency resistance Operating temp. -55 C to 120 C Vibration Mil-Std 202F range -67 F to 250 F Method 204D Mounting thread 5/8-18 UNF-2A Termination MS3106 connector Catalog Thread Weight Listing Length (A) 3040AN 28 mm 1.1 in 70 g 2.5 oz 3040AN25 63 mm 2.5 in 84 g 3.0 oz 3040AN30 76 mm 3.0 in 84 g 3.0 oz 3040AN40 101 mm 4.0 in 98 g 3.5 oz 3040AN50 127 mm 5.0 in 128 g 4.5 oz General Specifications Test Condition Specifications Parameter Characteristic Parameter Characteristic Parameter Characteristic Min. output voltage 70 Vp-p Inductance 85 mH max. Surface speed 25 m/s 1000 in/s Coil resistance 120 Ohm to 162 Ohm Gear pitch range 12 DP (module 2.11) Gear 8 DP or coarser (module 3.17) Pole piece 4,75 mm 0.187 in Optimum actuator 8 DP (module 3.17) Air gap 0,127 mm diameter ferrous metal gear 0.005 in Min. surface 0,38 m/s 15 in/s typ. Max. operating 40 kHz typ. Load 1.25 kOhm speed frequency resistance Operating temp. -55 C to 120 C Vibration Mil-Std 202F range -67 F to 250 F Method 204D Mounting Thread 5/8-18 UNF-2A Termination 20 AWG Teflon- insulated leads Catalog Thread Weight Listing Length (A) 3040S20 50 mm 2.0 in 70 g 2.5 oz 3040S30 76 mm 3.0 in 84 g 3.0 oz 2 www.honeywell.com/sensing