TQ401 proximity sensor

8 mV/µm or 2.5 µA/µm (2 mm range), −40 to 180 °C, Ø5 mm tip, standard-mount.

The TQ401 proximity sensor is a high-quality, high-reliability sensor for use with an EA401 extension cable and IQS450 signal conditioner, which provides either a voltage output or a current output.

The TQ401 is a standard-mount sensor that is designed and built for long-term use in extreme environments characterised by high temperatures and/or hazardous areas (potentially explosive atmospheres).

  • Designed for the contactless measurement of relative vibration and axial displacement in turbines, compressors, pumps and fans
  • 2 mm measurement range (Ø5 mm sensor)
  • −40 to 180 °C operating temperature, IP68 protection rating
  • 0.5, 1.0, 1.5, 2.0 or 5.0 m integral coaxial cable
  • Certified for use in potentially explosive atmospheres
PARAMETER Value (Imperial | Metric)
Linear measurement range 0.08 in | 2 mm
Operating temperature range −40 to 356 °F | −40 to 180 °C
Sensor (tip) diameter Ø0.2 in | Ø5 mm
Mounting options Standard mount
Integral cable length 1.6, 3.3, 4.9, 6.6 or 16.4 ft | 0.5, 1.0, 1.5, 2.0 or 5.0 m
Protection rating IP68
Hazardous area certifications Ex ia, Ex nA