G502 Rotary Inductive Position Sensor

CSA approved intrinsically safe sensors for hazardous gas atmospheres calibrated between 5-15 degrees at smaller angles of deflection

About the G502 Rotary Inductive Position Sensor

The intrinsically safe G502 is CSA approved for use in potentially explosive gas/vapour atmospheres. The G502 is designed for industrial and scientific feedback applications, like the G500 but with better resolution at smaller angles of deflection, and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas.

The G502 sensor provides a linear output proportional with angle of rotation. Each unit is supplied with the output calibrated to the angle required between 5 and 15 degrees and with full EMC protection built in.

There is a machined registration mark to identify the calibrated mid point.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The G502 has long service life and environmental resistance with a rugged stainless steel body and shaft. The flange or servo mounting options make the sensor easy to install, it also offers a range of mechanical options. Environmental sealing is to IP65 or IP67 depending on selected cable or connector options.

The intrinsically safe sensors are designed to be used with a galvanically isolated amplifier. Approved galvanic isolation amplifiers are available; there is a choice of 0.5-9.5V or 4-20mA transmission outputs.

The sensor can be installed with a cable length up to 1km between the sensor and the amplifier.

Features G502

  • Intrinsically safe for gas to: Class I, Zone 0 Ex ia / AEx ia
  • Non-contacting inductive technology to eliminate wear
  • Angle set to customer's requirement
  • Compact, durable and reliable
  • High accuracy and stability
  • Sealing to IP65/IP67 as required

As a leading supplier of linear, rotary, tilt and intrinsically safe position sensors, Althen has the expertise to supply a sensor to suit a wide variety of applications.


Body diameter
Sensor mounting
Flange or servo
Independent linearity
< ±0.25% FSO
Temperature range
-40°C to +80°C
Intrinsically safe for gas to
Class I, Zone 0 Ex ia / AEx ia
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