Non-contact eddy current transmitter for shaft vibration (WK-142K) and thrust position (WK-142T) on high-speed turbomachinery; 4–20 mA directly to the PLC / DCS.
WK-Series 2-Wire Eddy Current Transmitters
WK-Series non-contact, eddy current vibration and thrust transmitters offer an elegant solution for monitoring high-speed turbomachinery by directly providing a 4–20 mA signal to the machine PLC or DCS. No monitor or vibration converter is needed; power and signal share the same 2-wire current loop.
Two types are available: WK-142K for shaft vibration and WK-142T for thrust position. Ideal for monitoring small compressor vibration.
- Cost-effective CIP
- Ideal for compressor sleeve bearings
- CE compliant
- Hazardous area approvals — CSA, ATEX, TIIS (Japan)
- DIN-rail and plate-mount versions
Technical Specifications
| Models | WK-142K (shaft vibration), WK-142T (thrust position) |
|---|---|
| Output | 4–20 mA, 2-wire current loop |
| Measuring ranges | 0–100 / 125 / 200 / 250 / 400 µm pk-pk; ±0.6 / ±0.635 mm |
| Frequency response | 5 Hz – 6 kHz |
| Power supply | 12 – 35 V DC |
| System cable length | 5, 7 or 9 m |
| Operating temperature | Transmitter 0 – 70 °C; sensor and cable -34 – +177 °C |
| Approvals | CSA Class I Div.2, ATEX EEx nA II T6, CE |