KEY FEATURES AND BENEFITS

From the vibro-meter product line Non-contact measurement system based on eddy-current principle Ex certified versions for use in hazardous areas (potentially explosive atmospheres) TQ401 conforms to API 670 recommendations 5 and 10 m systems Temperature-compensated design Voltage or current output with protection against short circuits Frequency response:DC to 20 kHz (-3 dB) 2 mm

Measurement range:

Temperature range:-40 to +180°C

APPLICATIONS

Shaft relative vibration and gap/positionmeasurement chains for machineryprotection and/or condition monitoring

Ideal for use with VM600Mk2/VM600 andVibroSmart machinery monitoring systems

DESCRIPTION

The TQ401, EA401 and IQS450 form a proximitymeasurement system from Meggitt's vibro-meterBproduct line. This proximity measurement systemallows contactless measurement of the relativedisplacement of moving machine elements.

TQ4xx-based proximity measurement systems areparticularly suitable for measuring the relativevibration and axial position of rotating machineshafts, such as those found in steam, gas andhydraulic turbines, as well as in alternators, turbo-compressors and pumps.

DESCRIPTION (continued)

The system is based around a TQ401 non-contactsensor and an IQS450 signal conditioner.Together, these form a calibrated proximitymeasurement system in which each componentis interchangeable. The system outputs a voltageor current proportional to the distance betweenthe transducer tip and the target, such as amachine shaft.

The active part of the transducer is a coil of wirethat is moulded inside the tip of the device, madeof Torlon (polyamide-imide). The transducerbody is made of stainless steel. The target material

must, in all cases, be metallic.

The transducer body is available with metric orimperial thread. The TQ401 has an integral coaxialcable, terminated with a self-locking miniaturecoaxial connector. Various cable lengths (integraland extension) can be ordered.

the necessary electro-magnetic field used tomeasure the gap. The conditioner circuitry ismade of high-quality components and ismounted in an aluminium extrusion.

The TQ401 transducer can be matched with asingle EA401 extension cable to effectivelylengthen the front-end. Optional housings,junction boxes and interconnection protectorsare available for the mechanical andenvironmental protection of the connectionbetween the integral and extension cables.

TQ4xx-based proximity measurement systems canbe powered by associated machinery monitoringsystems such as VM600Mk2/VM600 modules(cards) or VibroSmart modules, or by anotherpower supply.

For specific applications, contact your local

Meggitt representative.

The IQS450 signal conditioner contains a high-frequency modulator/demodulator that suppliesa driving signal to the transducer. This generates.