TWW 212 – One-channel Position Transmitter

The TWW 212 transmitter is a one-channel position transmitter for static displacement measurement using Vibro-Meter proximity probes TQ 4xx with IQS 4xx signal conditioners. It enables accurate non-contact position monitoring and integrates advanced fault detection for reliable operation in industrial applications.

Reliable Static Position Measurement

The TWW 212 adapts its measuring range according to the connected signal conditioner and proximity probe. It supports standard and optional frequency ranges (0–5 Hz standard, 0–2 Hz or 0–10 Hz optional) with a low-pass filter of 20 dB/decade.

The transmitter provides a 4–20 mA current output and a buffered RAW voltage signal from the IQS conditioner. Front-panel offset adjustment (±1 mA) allows correction of small installation errors, while fault monitoring ensures interruptions, short circuits, or out-of-range conditions are detected. Indications are given via a red LED and a 2 mA alarm signal.

Key Benefits

• Static displacement monitoring with Vibro-Meter TQ 4xx probes and IQS 4xx conditioners

• Frequency range options up to 10 Hz with integrated low-pass filtering

• Dual outputs: 4–20 mA current signal and RAW voltage signal

• Advanced fault monitoring with LED and alarm signal

Application Areas

The TWW 212 is widely applied in industrial environments where static displacement must be monitored, such as:

• Shaft position monitoring in turbines and large rotating machinery

• Static displacement in pumps and compressors

• Alignment and diagnostics in process machinery

• Industrial condition monitoring systems

Technical Specifications

• Measuring range: defined by IQS signal conditioner and probe

• Frequency ranges: 0–5 Hz (standard), optional 0–2 Hz or 0–10 Hz

• Current output: 4–20 mA, max. load 500 Ω

• Voltage output: buffered RAW signal from IQS, RLoad ≥ 20 kΩ

• Offset correction: ±1 mA, via front-panel potentiometer

• Power supply for IQS: –26 V DC ± 5%, max. 30 mA

• Power supply: +24 V DC (18–30 V), galvanically isolated, max. 150 mA

• Housing: Polyamide, IP30, 114.5 × 99 × 22.5 mm, approx. 200 g

Optimize your static displacement monitoring with the TWW 212 transmitter