Nanjing KJT Electric Co,.LTD
Our main products are proximity sensor, photoelectric sensor,speed sensor,wireless sensor and so on.
The KJT-EX38A-LY series Variable Reluctance Speed (VRS) sensors consist of an iron core, an inductive coil and a permanent magnet. A ferrous pole wheel passing the sensor face changes the magnetic field strength, resulting in an AC Voltage being induced in the coil. The frequency of the output signal is proportional to the speed of the moving target. The amplitude of the signal depends on speed, air gap, geometry of the target, magnetic properties of the target material and the electrical load. VRS sensors, also known as passive or electromagnetic sensors, do not require an external supply.
The EX38A is specifically designed for use in explosive atmospheres.
Signal Output: the signal frequency is proportional to the target speed
Thread Length: 1.35" 3/8"-24 UNF-2A thread
0-20 kHz Frequency Range
Housing: 3/8"-24 UNF-2A, tightening torque: max. 10 Nm
Connection: Connector, M12x1 thread, 4-pins, black
Coil Inductance: 170 mH +/-10% at 1 kHz
Coil Resistance: 850 Ohm +/-10%
Coil Magnet Polarity: North pole towards front face
Operating Temperature: -104-257°F (-40-125°C)
Protection: IP68 (Sensor) / IP67 (Cable)
Insulation: housing and electronics galvanically isolated (Test: 500V, 50 Hz for 1 minute)
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