IQS450 204-450-000-002  proximity measurement system

The TQ401, EA401 and IQS450 form a proximity measurement system from Meggitt’s vibro-meter®
product line. This proximity measurement system allows contactless measurement of the relative
displacement of moving machine elements. TQ4xx-based proximity measurement systems are
particularly suitable for measuring the relative vibration and axial position of rotating machine
shafts, such as those found in steam, gas and hydraulic turbines, as well as in alternators, turbocompressors and pumps

IQS450

The system is based around a TQ401 non-contact sensor and an IQS450 signal conditioner.
Together, these form a calibrated proximity measurement system in which each component is interchangeable. The system outputs a voltage
or current proportional to the distance between the transducer tip and the target, such as a machine shaft.
The active part of the transducer is a coil of wire that is moulded inside the tip of the device, made of Torlon®

(polyamide-imide). The transducer body is made of stainless steel. The target material must, in all cases, be metallic.
The transducer body is available with metric or imperial thread. The TQ401 has an integral coaxial
cable, terminated with a self-locking miniature coaxial connector. Various cable lengths (integral
and extension) can be ordered.
The IQS450 signal conditioner contains a highfrequency modulator/demodulator that supplies a driving signal to the transducer. This generates