PyroSigma - Miniature Pyrometer with Built-in Display



  • Small, low-cost industrial infrared temperature sensor
  • Side-entry cable: ideal for mounting in tight spaces
  • Voltage output, selectable 0-10 / 0-5 / 1-5 V DC
  • Measures temperatures from 0°C to 1000°C
  • Fully configurable for averaging, hold processing, emissivity, output scale etc.
  • Alarm output
  • Low-profile housing for applications with limited headroom e.g. IR curing, dryers, laminating machines, switchgear cabinets etc
  • Not designed or approved for fever detection

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The Sensor measures: Temperature of a surface
Temperature Range: 0 to 1000°C
Temperature Output:Voltage: 0-5 V DC or 0-10 V DC output, linear with measured temperature, rescalable
Alarm Output:Open collector alarm output with temperature threshold and hysteresis, configurable
Note: Alarm and temperature outputs may be used simultaneously
Field of View: 15:1 (see Field of View Diagram)
Accuracy: ± 1.5% of reading or ± 1.5°C, whichever is greater
Repeatability: ± 0.5% of reading or ± 0.5°C, whichever is greater
Response Time: 125 ms (90% response)
Configuration: Via built-in display and controls
Emissivity Setting: Adjustable 0.2 to 1.0
Max Temperature Span (Voltage Output): 1000°C
Min Temperature Span (Voltage Output): 100°C
Spectral Range: 8-14 μm
Max. Supply Voltage: 28 V DC
Min. Supply Voltage (at Sensor):
12 V DC (for 10 V output)
6 V DC (for 5 V output)
Max Current Draw: 6 mA


Configurable Parameters:
Temperature range for voltage output
Output voltage range and scale
Alarm output threshold and hysteresis
Emissivity setting
Reflected temperature
Signal processing (see below)
Temperature Units: °C / °F

Signal Processing:

Averaging Period (0.125 to 60 seconds)
Peak / Valley Hold Mode
Hold Period (0.125 to 120 seconds)
The diagram shows the measured spot size for 90% of the detected energy. Sensors can measure longer distances than the diagram shows, and the accuracy is not affected by the measurement distance in clean air. This is because the PyroNFC detects only the wavelengths of infrared radiation that are not absorbed by the atmosphere.

Mechanical Specifications

Black anodised aluminium and blue ABS
Cable Length
1 metre standard (longer lengths available to order)
Weight with 1 Metre Cable
65 g

Environmental Specifications

Environmental Rating
Ambient Temperature Range
0°C to 70°C
Relative Humidity
95% max. non-condensing

Electromagnetic Compatibility Standards

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

Mounting Bracket

Fixed and adjustable mounting brackets

Provides 1 or 2 axis adjustment for aiming the sensor. Model shown: FBN (fixed mounting bracket, 1 axis adjustment).

Model: FBN (fixed); ABN (adjustable)

Air purge collar

Air purge collar

The lens of all infrared temperature sensors must be kept clean for accurate measurements. This accessory helps stop dust and condensation from settling on the lens. Includes barbed air fitting and long mounting screws.

Model: APN

Calibration Certificate

UKAS traceable calibration certificate at 3 standard temperature points.


Extended Cable

Calex can optionally fit a longer cable to the sensor (30 m max).
The cable can also be extended by the user. See Ordering.

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