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DET Series Displacement Sensors

Short Description:

DET series Displacement Sensor is based on the principle of differential inductance, which converts linear moving mechanical quantity into electric quantity, so as to automatically monitor and control displacement. It has the advantages of high temperature resistance, small size, high accuracy, stable performance, reliable operation and long service life. It can run continuously for one overhaul cycle of steam turbine without maintenance and replacement.


Product Detail

Specifications

Linear Range Optional from 0~1000mm Linearity 0.5%   0.25%
Sensitivity 2.8~230mv/v/mm Voltage ≤ 0.5% FSO
Excitation Voltage 3Vms (1~5vms) Excitation Frequency 2.5 KHz (400 Hz ~ 100 kHz)
Working Temperature -40~150℃ (conventional)-40~210℃ (high temp) Sensitive Coefficient ±0.03%FSO./℃
Vibration Tolerance 20g (up to 2 kHz) Shock Tolerance 1000g (within 5ms)

Range Table – A Type

Model

Linear Range A (mm)

Length (mm)

PRI Coil Resistance

(Ω±15%)

SEC Coil Resistance

(Ω±15%)

Unipolar

Biopolar

DET 20A

0~20

±10

120

130

540

DET 25A

0~25

±12.5

140

148

244

DET 35A

0~35

±17.5

160

77

293

DET 50A

0~50

±25

185

108

394

DET 100A

0~100

±50

270

130

350

DET 150A

0~150

±75

356

175

258

DET 200A

0~200

±100

356

175

202

DET 250A

0~250

±125

466

227

286

DET 300A

0~300

±150

600

300

425

DET 350A

0~350

±175

700

354

474

DET 400A

0~400

±200

750

287

435

DET 500A

0~500

±250

860

311

162

DET 600A

0~600

±300

980

362

187

DET 700A

0~700

±350

1100

271

150

DET 800A

0~800

±400

1220

302

164

Remark: 1. Sensor wires: primary: brown yellow, sec1: black green, sec2: blue red.
2. Sensor fault diagnosis: measure PRI coil resistance and SEC coil resistance.

Notes

1. Linear range: within two scale lines of the sensor rod (based on “Inlet”).
2. The sensor rod number and shell number must to be consistent, supporting the use.
3. Keep sensor shell and signal demodulation unit away from strong magnetic fields.


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