- Miniature non-contact temperature sensor with USB communications
- Measures temperatures from -20°C to 1000°C
- USB cable and software included for data logging and configuration
- Modbus protocol - use your own software to communicate with the sensor
Software Features: CalexConfig
- Temperature display, graph, configuration and data logging
- Connect multiple sensors to the same software
- Simple, touch-friendly interface
- Software included with every sensor
Benchtop and Laboratory
With the precision and robustness of our industrial pyrometers, and the plug-and-play convenience of USB, the PyroMiniUSB is the ideal benchtop temperature sensor for testing and experimentation.
The PyroMiniUSB is ideal for teaching science concepts such as emissivity, reflectivity, thermal conductivity, energy transfer, insulation and internal energy.
Combined with a blackbody calibration source, the PyroMiniUSB makes the ideal calibration reference pyrometer. Keep one in your calibration room and check the performance of your other sensors against it. Calex can provide calibration certificates for traceabillity.
Two models are available:
PMU21 PyroMiniUSB sensor with 2:1 optics – for large or close-up targets
PMU201 PyroMiniUSB sensor with 20:1 optics – for small or more distant targets
Just plug the sensor directly into the USB port of a PC or laptop.
The sensor is USB powered – no other power supply is required
-20°C to 1000°C
RS485 Modbus RTU
±1% of reading or ±1ºC whichever is greater
± 0.5% of reading or ± 0.5°C whichever is greater
Response Time, t90
125 ms (90% response)
8 to 14 μm
6 to 28 V DC
50 mA max.
9600 baud (other configurations available upon request)
Modbus Data Format
8 data bits, no parity, 1 stop bit (other configurations available upon request)
Modbus over Serial Line
Via USB using CalexConfig or other Modbus software
Emissivity Setting, Averaging, Peak/Valley Hold Processing, Reflected Energy Compensation
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 Calex sensors detect only the wavelengths of infrared radiation that are not absorbed by the atmosphere.
18 mm diameter x 45 mm long (excluding cable gland)
M16 x 1 mm pitch
|Ambient Temperature Range
||0°C to 75°C
||95% max. non-condensing
Electromagnetic Compatibility Standards
EN61326-1, EN61326-2-3 (Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements – Industrial)
Accessories for this instrument listed below