Vibro-Meter TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05 Non Contact Eddy Current Proximity Transducer

Frequently asked questions
Q:What is the Vibro-Meter TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05?
A:The TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05 is a non-contact eddy-current proximity transducer used as part of the TQ402/EA402/IQS900 proximity measurement system for measuring shaft vibration and relative position in rotating machinery. It complies with the recommendations of API 670.

Q:What measurements can the TQ402 perform?
A:The transducer is designed for non-contact measurement of shaft relative vibration, axial displacement, radial position, eccentricity, and the gap between the probe tip and a metallic target.

Q:What is the operating temperature range of the TQ402 transducer?
A:The transducer operates continuously from −40°C to +180°C with less than 5% measurement drift and can withstand temperatures up to +220°C for short-term survival.

Description

The Vibro-Meter TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05 is a non-contact eddy-current proximity transducer designed for shaft relative vibration and gap/position measurements in rotating machinery. It forms part of the TQ402/EA402/IQS900 proximity measurement system, which is intended for machinery protection and condition monitoring applications and conforms to the recommendations of API 670. The system is available in 1 m, 5 m, and 10 m configurations and is compatible with VM600 and VibroSmart® monitoring systems. The transducer employs a temperature-compensated design and provides stable, non-contact displacement measurement based on the eddy-current principle. The TQ402 operates over a temperature range of −40°C to +180°C with less than 5% measurement drift, and can withstand temperatures up to +220°C for short-term survival. When paired with the IQS900 signal conditioner, the complete measurement chain offers a frequency response from DC to 20 kHz (−3 dB) and supports either voltage or current output, providing reliable performance for continuous machinery monitoring in industrial environments.

Parameter

Model: TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05 Non Contact Eddy Current Proximity Transducer
Frequency response: DC to 20 kHz (−3 dB)
Measurement range: 2 or 4 mm
Temperature range: −40 to +180 °C
Measurement Drift: < 5%
System Length Configurations: Available in 1 m, 5 m, and 10 m configurations
Short-Term Survival Temperature: Up to +220°C

Application areas

The Vibro-Meter TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05 is exact application areas include:

• Power Generation: Large-scale steam turbines, hydro-turbines, gas turbines, and generators where thermal expansion and heavy rotational loads require strict structural gap containment.
• Petrochemical Oil & Gas Processing: Critical centrifugal compressors, multi-stage turbo-compressors, and high-pressure process pumps that cannot tolerate downtime or leakage.
• Heavy Processing Plants: High-power air blowers, turbo-expanders, and heavy industrial gearboxes within steel processing or air separation plants.

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