111-412-000-012 TQ412 proximity transducer

DESCEIPTION:

This proximity system allows contactless measurement of the relative displacement of moving machine elements. It is 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, turbo-compressors and pumps.

The system is based around a TQ 402 or TQ 412 non-contacting transducer and its matching IQS 452 signal conditioner. Together, these form a calibrated proximity 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 (e.g. machine shaft).

The active part of the transducer is a coil of wire that is moulded inside the tip of the device, which is 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 English thread. The TQ 412 version is intended for reverse-mount applications. The TQ 402/412 has an integral coaxial cable, terminated with an AMP-type connector. Various cable lengths (integral and extension) may be ordered.

The IQS 452 signal conditioner contains an HF modulator/demodulator that supplies a driving signal to the transducer. This generates the necessary electromagnetic field used to measure the gap. The conditioner circuitry is made of high-quality components and is mounted in an aluminium extrusion.

The TQ 402/412 transducer can be matched with a single EA 402 extension cable. Optional junction boxes and housings offer mechanical protection of the integral and extension cable connectors. The proximity system is powered by associated processor modules or a rack power supply.

General
Transducer input requirements
:
High-frequency power source from an IQS900 signal conditioner
Environmental
Temperature ranges
•Transducer
:
−40 to +180°C with drift <5% (operating).
+180 to +220°C with drift >5% (short-term survival).
•Transducer and cable
:
−40 to +195°C if used in an Ex Zone
•Cable, connector and optional protection
:
−40 to +200°C
Protection rating
(according to IEC 60529)
:
The head of the proximity transducer (transducer tip and integral cable) is rated IP68
Vibration
(according to IEC 60068-2-26)
:
5 g peak between 10 and 500 Hz
Shock acceleration
(according to IEC 60068-2-27)
:
15 g peak (half sine-wave, 11 ms duration)
Physical characteristics
Transducer construction
:
Wire coil Ø8 mm, Torlon (polyamide-imide) tip, encapsulated in stainless steel body (AISI 316L) with high-temperature epoxy glue
Integral and extension cables
:
FEP covered 70 Ω coaxial cable, Ø3.6 mm
Connectors
:
Self-locking miniature coaxial connectors.
Note: When connecting, these should be hand-tightened until locked.
Optional protection
•Flexible stainless steel hose
(protection tube)
:
The stainless steel hose provides additional mechanical protection but is not leak-tight
•FEP sheath
(extruded fluorinated ethylene propylene)
:
The FEP sheath provides resistance to almost all chemicals and low permeability to liquids, gases and moisture. It is also flexible, low friction and mechanically tough.

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Technical specification, manuals and data sheets