-40°C to 1000°C
Optics (see Field of View Diagrams)
15:1 (model PU151)
30:1 (model PU301)
Diameter 5mm @ distance 100mm (model PUCF)
4 to 20 mA (linear with temperature) and USB
Via USB port conforming to USB 2.0, using included cable and PC software
±1% of reading or ±1°C whichever is greater
±0.5% of reading or ±0.5°C whichever is greater
0.1 to 1.0
Response Time, t90
240 ms (90% response)
24 V DC (28 V DC max)
Maximum Span (4-20 mA output)
Minimum Span (4-20 mA output)
Software Specifications: CalexSoft
Windows XP or newer
Temperature display, scrolling temperature chart, sensor configuration, data acquisition with scheduled start, on-screen and audible alarms, OPC Server interface
Data log file format
.csd (comma separated text format, may be imported to spreadsheet software such as Excel)
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.
25 mm diameter x 106.5 mm long
M20 x 1 mm pitch
Weight with Output Cable
Output Cable Length
1 m as standard (cable lengths up to 30 m available on request)
|Ambient Temperature Range
||0°C to 70°C
||95% max. non-condensing
Electromagnetic Compatibility Standards
Conforms to EN61326-1, EN61326-2-3 (Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements – Industrial
The analogue and USB outputs of the PyroUSB make it ideal for use in the factory or on the test bench.
There are many more applications in which the PyroUSB may be used with great success. For more information on using this sensor in your application, or for help in choosing the most suitable model, please contact Calex.
The PyroUSB can measure temperatures as low as -40°C, so it is especially suitable for non-contact temperature measurement of frozen food.
For individual food items or moulds on a moving conveyor, the peak/valley-hold processing capability of the PyroUSB may be used to ensure only the temperature of the food item or the mould itself is measured.
An internationally-famous manufacturer uses the PyroUSB to measure chocolate bar mould temperatures prior to automatic deposition of molten chocolates.
R&D and Laboratory
The USB interface makes the PyroUSB ideal for use on the test bench in lab and R&D applications.
The included software can log data in a simple, Excel-compatible comma-separated text format, and is also compatible with LabView and other software via the built-in OPC Server
Non-contact measurement of brake disc temperatures between -40°C and 1000°C, for discs made of non-metals such as carbon.
The all-in-one design of the fully-configurable PyroUSB provides a linear analogue temperature output directly from the sensor body. It is ideal for measurement of temperatures on thermoforming machines without the need for signal converters or separate electronics boxes.
Bearing testing, gearbox testing
Measurement of external housing surface temperature on bearing and gearbox test rigs, with data acquisition directly to a PC via USB.
Furnaces and ovens
The PyroUSB may be positioned outside a furnace or oven, and aimed in through a window or purged sight tube. The reflected energy compensation feature reduces errors from reflections, and helps ensure an accurate reading of the temperature of the object inside the furnace.
The PyroUSB has a 4-20 mA output and USB communications. It is possible to use the outputs individually, or both at the same time.
Current Output Only
Current Output and USB Connected Simultaneously