products

The TQ402/TQ412, EA402 and IQS900 form a proximity measurement system. 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.

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.