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3025
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High Output VRS Sensor, 9,5 mm [0.375
in] M12 diameter, 55 Vp -p, -40 ºC to 107
ºC [-40 ºF to 225 ºF], 26 DP (module 0.98)
or coarser, 40 kHz, 32 mm [1.25 in]
approx. length
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Features
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Potential Applications
Self-powered operation
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Direct conversion of actuator speed to
output frequency
Simple installation
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No moving parts
Designed for use over a wide range of
speeds
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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)
Housing materials/styles: stainless steel
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threaded or smooth
Terminations: MS3106 connector,
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preleaded
Output voltages: 8 Vp-p to 190 Vp-p
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 Output VRS sensors are designed for use in applications where
higher output voltages are needed. They perform best at low to medium
speeds with medium to high impedance loads. Front-End Sealed
versions are available for use 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 lines 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. 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,
power output, high resolution, high temperature, and hazardous
location applications, as well as low-cost molded versions.
Supporting Documentation
None Available
Product Specifications
Terms & Conditions |
Diameter
9,5 mm [0.375 in]
Available Metric Thread
M12
Test Condition Specifications
Surface Speed = 25 m/s [1000
in/s], Gear = 20 DP [module
1.27), Air Gap = 0.127 mm [0.005
in], Load Resistance = 100 kOhm
Min. Output Voltage (Peak to
Peak)
55 Vp - p
Pole Piece Shape and Size
Round; 2,36 mm [0.093 in]
diameter
Typ. Operating Temperature
Range
- 40 º C to 107
º F]
Gear Pitch Range
26 DP (module 0.98) or coarser
Typ. Operating Frequency
40 kHz
Max. Inductance
75 mH
Coil Resistance
275 Ohm to 330 Ohm
Min. Surface Speed
0,38 m/s [15 in/s]
Optimum Actuator
24 DP (module 1.06) ferrous
metal gear
Mounting Thread
3/8 - 24 UNF - 2A
Vibration
Mil - Std 202F, Method 204D
Material
Stainless steel threaded
Approximate Housing Length
32 mm [1.25 in]
Termination
24 AWG Vinyl
mm [24 in]
Weight
28 g [1.0 oz]
Series Name
High Output
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º C [ - 40 º F to 225
- insulated leads, 610
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