Proximity Transducer

The CEMB T-NC Proximity Transducer detect the displacement of a target facing to the sensor. The different dimensions of the sensor allow its application for the detection of different measuring ranges.

The principle of operation is based on the generation of an high frequency field, radiated by the probe, which induces an eddy current in the target facing to the probe itself. The intensity of this eddy current depends directly on the probe air gap and it is converted into an electrical signal processed by the converter.

The eddy current transducer is used for no-contact measurement of displacement and expansion of rotating machines.

The probe structural features allow its installation in a particularly heavy environment, with the presence of steam, oil and aggressive agents (typically on steam turbines, gas turbines, compressors, etc.).

These transducers are composed of a ST-NC/16, ST-NC/20 or ST-NC/30 probe and a T-NC converter contained in a die-cast aluminium housing, complete with a connector (according to MIL standards) for the connection of the transducer to the acquisition system



Composition AISI 304 stainless steel probe
Die-cast aluminium converter
Power supply 24 Vdc (20 to 30 Vdc)
External connections MIL C5015 5-pin connector (max conductors section 2,5 mm2)
Environmental application field Probe -50°C to +175°C
Converter -20°C to +70°C
Measuring field Model 16 4 mm from 0,5 to 4,5 mm
Model 20 8 mm from 0,5 to 8,5 mm
Model 30 13 mm from 0,5 to 13,5 mm
Linearity ± 2%
Insulation ≥10⁸ Ω between signal and body/housing
Electrical connections Three-polar shielded cable, typical conductors section 3x1 mm2

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