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PyroCouple – Simple Infrared Temperature Sensor with Analogue Output

PyroCouple – Simple Infrared Temperature Sensor with Analogue Output


  • Temperature range: -20°C to 500°C
  • Fixed emissivity setting: 0.95
  • 4-20 mA, Type K or J thermocouple, or 0-50 mV output options
  • Fast response with high stability
  • Stainless steel 316 housing
  • Sealed to IP65
  • Ideal for measuring non-reflective non-metals, or painted metal surfaces
  • Not designed or approved for fever detection

Brand : Calex


General Specifications:

Specification Value
Temperature Range -20°C to 100°C (LT models)
0°C to 250°C (MT models)
0°C to 500°C (HT models)
Optics Choice of optics for small or large targets at short or long distances – see Field of View Diagrams
Output (Measured Temperature) Two-wire 4-20 mA (-0 models)
0-50 mV (-1 models)
Type J Thermocouple (-3 models)
Type K Thermocouple (-4 models)
Output (Sensor Body Temperature) 4-20 mA on power loop (models with output options 1 to 4 only)
Accuracy ±1% of reading or ±1ºC, whichever is greater
Repeatability ±0.5% of reading or ±0.5ºC, whichever is greater
Emissivity Fixed at 0.95
Response Time, t90 240 ms (90% response)
Spectral Range 8 to 14 μm
Supply Voltage 24 V DC (28 V DC max.)
Min. Sensor Voltage 6 V DC
Max. Loop Impedance 900 Ω (4-20 mA output)
Output Impedance 56 Ω (voltage/thermocouple output)

Mechanical Specifications:

Specification Value
Construction Stainless Steel
Dimensions 18 mm diameter x 103 mm long
Thread Mounting M16 x 1 mm pitch
Cable Length 1m (longer lengths available to order)
Weight with Cable 95 g

Environmental Specifications:

Specification Value
Environmental Rating IP65
Ambient Temperature Range 0ºC to 70ºC
Relative Humidity 95% max. non-condensing

Electromagnetic Compatibility Standards:

Specification Value
Standards EN61326-1, EN61326-2-3
(Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements – Industrial)

Field of View Diagrams

Please note: The given measured spot size contains 90% of the energy detected by the sensor. We normally recommend the target is at least twice as large as the given measured spot for maximum accuracy. Sensors may be used at longer distances than the above diagrams show. There is no maximum measurement distance in clean air; this is because the PyroCouple detects only the wavelengths of infrared radiation that are not absorbed by the atmosphere.

Data Sheet