The VMD TSW201-007-05 is an industrial-grade, single-channel vibration transmitter designed to measure shaft vibration (Sppm) of rotating machinery using an eddy-current displacement sensor. It outputs peak-to-peak vibration values and complies with DIN ISO 10817-1 standards, with partial equivalence to API 610 standards.

• Measurement range: 50/125/250/500 μm p-p (selectable via front panel)
• Frequency range: 1-250 Hz (factory setting)
• Sensitivity accuracy: ±5%
• Linearity deviation: ±2% FSR
• Temperature error: 8% RD + 4% FSR
• Ambient temperature: 0 to +85°C
• Supply voltage: +24 VDC (18-30 VDC), max. 100 mA, galvanically isolated
• Housing material: Polyamide, gray
• Protection class: IP40
• Mounting method: DIN rail mounting (EN 60715:2001-09 Type 35×7.5 mm)

The unit features comprehensive internal self-diagnostic functions that monitor in real-time for open-circuit or short-circuit faults in the sensor and cabling, as well as instances where the measured object exceeds the static measurement range. Fault conditions are indicated via a red LED on the front panel and a 2 mA analog fault signal.

VMD--TSW201--X1--X2:

1. Visual Inspection: Periodically inspect the transmitter housing for damage, contamination, or corrosion.
2. Indicator Light Check: Verify that the green "Ready" LED is continuously lit and the red "Failure" LED is off.
3. Wiring Check: Check that all wiring terminals are secure and that cables show no signs of wear or damage.
4. Sensor Gap Check: Confirm that the static gap between the eddy current sensor and the measured shaft is within the effective measurement range.

A steam turbine unit at a thermal power plant requires continuous monitoring of shaft vibration during operation to prevent blade or bearing failures. A VMD TSW201-007-05 transmitter paired with a WW007 eddy-current sensor is utilized; the sensor is installed at the shaft journal near the bearing to perform non-contact measurement of peak-to-peak shaft vibration. The transmitter outputs a 4-20 mA signal to the DCS, enabling real-time monitoring and alarming of the unit's vibration status.