E-CATALOGUE

TQ9xx-based proximity chains

TQ9xx proximity sensors, EA90x extension cables and the IQS900 signal conditioner are the components of vibro-meter’s new state-of-the-art SIL 2-rated eddy-current proximity measurement chains.

TQ9xx-based proximity measurement chains allow contactless measurement of the relative displacement of moving machine elements. For example, the measurement of relative vibration and axial position for rotating machine shafts such as those found in steam, gas and hydraulic turbines, as well as in alternators, turbo compressors, and pumps.

Our expertise

In order to respond to an increasingly safety-driven market, we have been continuously improving our portfolio and developing new products to meet the highest safety standards like SIL and API 670.

Linear measurement range
2 or 4 mm (TQ9x2 sensors)
Frequency range
DC to 20,000 Hz
Temperature range
−40 to 180°C (TQ9xx sensors)
−40 to 85°C (IQS900 signal conditioner)
Diagnostic circuitry
Detect and remotely indicate problems with the measurement chain (TQ sensor, EA cabling, and/or IQS900 signal conditioner).
RAW output signal
A “raw” voltage output corresponding to internal IQS900 signals that allows measurement chain operation to be verified without disconnecting any outputs.
TEST input signal
A test voltage input that simulates a sensor input signal in order to verify the operation of the IQS900 and any attached equipment.
IQS9xx platform
For a future lower-power solution with a 4 to 20 mA current loop output.
  • SIL 2 certification by design in accordance with IEC 61508, and PL c Cat 1 in accordance with ISO 13849.
  • Conforms to API 670 5th edition.
  • International Ex certifications for applications in hazardous areas (potentially explosive atmospheres).
  • Compliant with the latest environmental RoHS directive and EMC standards (EU declaration of conformity / CE certificate).
  • Backward compatible replacement that matches or betters the outstanding performance of TQ4xx-based proximity measurement systems.
  • IQS900 signal conditioner has same footprint as IQS45x for easy replacement.
  • Configurable measurement range and sensitivity.
  • Current (2-wire) output for long-distance transmission or voltage (3-wire) output.

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