General Purpose Industrial VRS Magnetic Speed Sensors DESCRIPTION The output signal of a VRS sensor is an ac voltage that varies General Purpose VRS sensors are designed for use in in amplitude and wave frequency as the speed of the applications with medium to high speeds or in electrically noisy monitored device changes, and is usually expressed in peak to environments with relatively small air gaps. 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 high output, power target near the sensors pole piece (sensing area) changes the output, high resolution, high temperature and hazardous flux of the magnetic field, dynamically changing its strength. location applications, as well as low-cost molded versions. 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 diameters: 5/8 in (M16), 3/8 in (M12) mm, woodworking, printing, tobacco and pharmaceutical 1/4 in (M8), 10/32 in industry machinery Housing materials/styles: stainless steel threaded or Motor speed measurement of electrical generating smooth equipment Terminations: MS3106 connector, preleaded Speed measurement of pumps, blowers, mixers, exhaust Output voltages: 8 Vp-p to 40 Vp-p and ventilating fans Flow measurement on turbine meters Wheel-slip measurement on autos and locomotives Gear speed measurement General Purpose 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 40 Vp-p Inductance 25 mH max. Surface speed 25 m/s 1000 in/s Coil resistance 45 Ohm to 85 Ohm Gear pitch range 24 DP (module 1.06) Gear 20 DP or coarser (module 1.27) Pole piece 2,69 mm 0.106 in Optimum actuator 20 DP (module 1.27) Air gap 0,127 mm diameter ferrous metal gear 0.005 in Min. surface 0,50 m/s 20 in/s typ. Max. operating 50 kHz typ. Load 100 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) 3010AN 28 mm 1.1 in 70 g 2.5 oz 3010AN25 63 mm 2.5 in 84 g 3.0 oz 3010AN30 76 mm 3.0 in 84 g 3.0 oz 3010AN40 101 mm 4.0 in 98 g 3.5 oz 3010AN50 127 mm 5.0 in 128 g 4.5 oz Catalog Thread Weight Listing Length (A) 3010A 35 mm 1.4 in 70 g 2.5 oz 3010A25 63 mm 2.5 in 84 g 3.0 oz 2 www.honeywell.com/sensing