PyroUSB Infrared Temperature Sensors with 4-20 mA Output – IOThrifty

Free Ground Shipping for Orders over $75!

PyroUSB PC Configurable Infrared Temperature Sensors with 4-20 mA Output
PyroUSB Sensor with Air/Water Cooled Housing
PyroUSB Sensor with Air/Water Cooled Housing

PyroUSB PC Configurable Infrared Temperature Sensors with 4-20 mA Output

Regular price $530.00 $524.00 Sale SKU:IR-CA-PUA8-301

  • Temperature ranges from -40°C to 2000°C(model dependent)
  • Short-wavelength models for better accuracy on high-temperature targets and metals
  • General purpose models for most other applications
  • Rescalable 4-20 mA output
  • Fully configurable via USB interface (cable and Windows software included)
  • Use the USB or analog output only, or both together
  • Lead Time 1-2 Weeks for FAST and FREE Delivery

    PyroUSB  infrared  temperature sensors by Calex measure  temperatures  from  -40°C to 2000°C accurately and consistently, with an outstanding response time of 200 ms. The 4 to 20 mA output is compatible with almost any indicator, controller, recorder or data logger. without the need for special interfacing or signal conditioning.

    A choice of measurement wavelengths is available to suit a range of applications.

    General-purpose  PUA8  (8-14  μm)  models  can  measure  from -40°C  to  1000°C.  They  are  suitable  for  measuring  high-emissivity  materials  such  as  paper,  thick  plastics,  food,  pharmaceuticals,  rubber, asphalt and painted surfaces.   These models are capable of measuring very low temperatures, so they are ideal for sub-zero measurements in the food, logistics and storage industries.

    Short-wavelength  PUA2  (2.2  μm)  models  have  a  choice  of temperature  ranges  from  45°C  to  2000°C.  They  provide  a  more  accurate reading when measuring low-emissivity materials such as many reflective metals. They are also capable of measuring through glass viewports.

    This sensor is a great choice for iron, steel and stainless steel.  Nonferrous metals especially copper and aluminum are more application sensitive.  Please contact IOThrifty if you need to measure the temperature of nonferrous metals to discuss your application.

    Free Sofware
    The USB connection is used for configuring the sensor and can also be used to read the measurement into a standard computer with the free software.  Two software packages CalexConfig and CalexSoft 2 are available to download free of charge.

    CalexConfig - Simple, touch-friendly software for one sensor, with the following features:

    • Temperature display
    • Data logging to comma-separated text file (compatible with Excel)
    • Scrolling temperature chart
    • Sensor configuration

    CalexSoft 2 - Multi-channel software, features include:

    • All the features of CalexConfig, plus:
    • View multiple sensors in the same software
    • Customize the screen layout with graphs and temperature displays
    • Scroll between multiple screens of temperature information
    • Configurable usernames and access levels (admin and operator

     Optional Air/Water Cooled Housing
    The air/water cooled housing allows the sensor to withstand ambient temperatures above the normal limit. Depending on the degree of cooling required, air or water may be used as the cooling fluid. To prevent condensation forming on the lens, an air purge collar is included with this item. The air/water cooled housing must be ordered with the sensor and cannot be fitted by the user.

     To Order the models below scroll to the top of the page and choose the desired model from the "Models" drop down menu, then ADD TO CART

    General Purpose Use (not for reflective metals)
     30:1 Field of View Optics
    -40°C to 1000°C Range


    General Purpose Use (not for reflective metals)
     15:1 Field of View Optics
    -40°C to 1000°C Range

    IR-CA-PUA8-CF General Purpose Use (not for reflective metals)
     Close Focus Field of View Optics
    -40°C to 1000°C Range
    IR-CA-PUA2-151-LT Reflective Metals Use
    15:1 Field of View Optics
    45°C to 300°C Range
    IR-CA-PUA2-751-HT Reflective Metals Use
    75:1 Field of View Optics
    450°C to 2000°C Range
    IR-CA-PUA2-751MT Reflective Metals Use
    75:1 Field of View Optics
    250°C to 1000°C Range
    IR-CA-PUA2-CF-HT Reflective Metals Use
    Close Focus Field of View Optics
    450°C to 2000°C Range
    IR-CA-PUA2-251-MT Reflective Metals Use
    25:1 Field of View Optics
    250°C to 1000°C Range

     The most popular configurations are shown here.  Many other configurations are available.  Please contact IOThrifty for additional models and configurations.

    PyroUSB User Guide
    Calex Config Configuration Software
    CalexSoft 2 Multi-channel Software



    Temperature Range

    IR-CA-PUA8-301 : -40°C to 1000°C
    IR-CA-PUA8-CF : -40°C to 1000°C
    IR-CA-PUA2-151-LT: 45°C to 300°C
    IR-CA-PUA2-751-HT : 450°C to 2000°C
    Output: Two-wire 4 to 20 mA (linear with temperature) Configuration Via PC port conforming to USB 2.0

    IR-CA-PUA2-151-LT , IR-CA-PUA2-751-HT: ±1% of reading or ±2°C, whichever is greater
    IR-CA-PUA8-301, IR-CA-PUA8-CF: ± 1°C or 1% of reading, whichever is greater

    Repeatability: ±0.5% of reading or ±0.5°C, whichever is greater

    Emissivity Setting: Adjustable 0.1 to 1.0 via software

    Response Time, t90: 200 ms

    Spectral Range
    IR-CA-PUA2-151-LT , IR-CA-PUA2-751-HT: 2.0 to 2.6 µm
    IR-CA-PUA8-301, IR-CA-PUA8-CF:8 to 14 µm

    Software Specifications (CalexConfig)
    Operating System: Windows
    Features: Temperature display, scrolling temperature chart, sensor configuration, data acquisition with scheduled start, on-screen alarmData log file format.csd (comma separated text format, may be imported to spreadsheet software such as Excel) Data transmission protocolModbus over USB (it is possible to communicate with the sensor for temperature measurement and configuration using third-party software. Protocol information is provided in the instruction manual.)

    Environmental Specifications
    Environmental Rating: IP65
    Ambient Temperature Range: 0°C to 70°C (cooling option available for use in higher ambient temperatures)
    Relative Humidity: 95% max. non-condensing

    Field of View Optics

    30 to 1 Field of ViewFiled of View Optics 15:1

    Close Focus Field of View75 to 1 Field of View


    Since the outbreak of the Covid-19 pandemic, we have received a lot of interest in the use of our infrared temperature sensors for body temperature measurement.  These sensors are designed for industrial and laboratory surface temperature measurement.  They are not designed or certified for body temperature measurement or for medical use. Because of this IOThrifty does not warranty or guarantee their use in body temperature measurement applications

    For measuring body temperature IOThrifty does offer these products: