Temperature measurement

A well-functioning heating system heats the rooms in a building, ensuring the inhabitants feel comfortable even on cold days. However, in order for a heating system to work efficiently and distribute its heat energy as uniformly as possible, temperature measurement is crucial. At Testo, you will find temperature measuring instruments for these important  heating measurements:

  • Flow/return temperature on heating circuit distributors
  • Hydraulic balancing based on differential temperature
  • Testing underfloor heating systems and radiators
  • Measuring indoor air temperature
  • Detecting cold bridges with thermal imagers

  • Flow and return temperature
  • Water and indoor air temperature
  • Hydraulic balancing (differential temperature)
  • On radiators
  • On heating pipes
  • On other surfaces (e.g. walls, floors)
  • Underfloor heating: Heat distribution
  • Radiators: Silting
  • Building shells: Cold bridges
29 products or recommendations for Temperature measurement
  • testo 925 - temperature measuring instrument

    Order-Nr. 0560 9250

    This temperature measuring instrument is particularly practical because it enables virtually any kind of temperature measurement. Whether for surface, air or immersion/penetration measurement: with the testo 925 you can rely on our all-rounder in heating engineering, the sanitation sector and refrigeration and air conditioning technology.
    • An attachable temperature probe and a radio temperature probe can be connected

    • Large range of fast temperature probes on offer for surface, air or immersion/penetration measurement (optional)

    • Continuous display of min./max. values

    • Acoustic alarm sounds when limit values are exceeded

  • testo Smart Probes AC & refrigeration test kit plus

    Order-Nr. 0563 0002 41

    For refrigeration engineers: The kit contains two testo 549i high-pressure gauges, two testo 605i thermohygrometers and two testo 115i clamp thermometers. Used in conjunction with your smartphone/tablet, the kit is ideal for servicing, troubleshooting and installing air conditioning and refrigeration systems. The testo Smart Probes App makes your work easier and more efficient: over 90 stored refrigerants, automatic calculation of superheating/subcooling, target superheat and cooling/heating power, emailing of measurement data reports as PDF or Excel files.
    • Application-specific measurement menus for superheating/subcooling, target superheat, heating/cooling power

    • More than 90 common refrigerants plus refrigerant updates in the testo Smart Probes App

    • 100 m Bluetooth® range for particularly flexible applications

    • Transmission and analysis of measurement data via testo Smart Probes App

  • testo Smart Probes AC & refrigeration test kit

    Order-Nr. 0563 0002 10

    For refrigeration engineers: Compact kit containing testo 549i high-pressure gauge and testo 115i clamp thermometer (two of each). Used in conjunction with your smartphone/tablet, the kit is ideal for servicing, troubleshooting and installing air conditioning and refrigeration systems. The testo Smart Probes App makes your work easier and more efficient: over 90 stored refrigerants, automatic calculation of superheating/subcooling, emailing of measurement data reports as PDF or Excel files.
    • Application-specific measurement menus for superheating/subcooling

    • More than 90 common refrigerants plus refrigerant updates in the testo Smart Probes App

    • 100 m Bluetooth® range for particularly flexible applications

    • Transmission and analysis of measurement data via testo Smart Probes App

  • testo 830-T1 - Infrared thermometer

    Order-Nr. 0560 8311

    The testo 830-T1 infrared thermometer allows efficient, non-contact surface temperature measurements to be carried out. The IR thermometer will leave you well equipped, especially for control readings in trade and industry: The gun-style design is easy to handle and the integrated processor provides accurate measurement results.
    • Infrared thermometer for non-contact surface temperature measurements

    • 10:1 optics and high resolution processor for accurate measurement results

    • Easy to use thanks to the gun-style design

    • Adjustable emission level

  • testo 830-T2 - Infrared thermometer

    Order-Nr. 0560 8312

    The testo 830-T2 infrared thermometer enables you to carry out efficient, non-contact surface temperature measurements. The IR thermometer will ensure that you are well equipped, especially for undertaking control measurements in trade and industry: the gun-style design is easy to handle and the integrated processor provides accurate measurement results.
    • Infrared thermometer for non-contact surface temperature measurements

    • 12:1 optics and high resolution processor for accurate measurement results

    • Contact measurement possible with connectable temperature probe (TC type K)

    • Adjustable emission level

  • testo 865 - thermal imager

    Order-Nr. 0560 8650

    The testo 865 thermal imager combines all the important properties required for high-quality thermographic measurement – it is accurate, robust, fast and reliable. The testo 865 provides high-quality thermography at an affordable price and keeps going even in tough working conditions. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.
    • Very good image quality: IR resolution of 160 x 120 pixels, via integrated testo SuperResolution Technology 320 x 240 pixels

    • Very good measuring accuracy of ±2°C

    • Visualizing temperature differences from 0.12°C

    • Automatic detection of hot and cold spots

  • testo 104 - Waterproof food thermometer

    Order-Nr. 0563 0104

    Waterproof folding thermometer - ideal for spot check measurements in the food sector.
    • Ideal for use with food: HACCP compliant, EN 13485 certified

    • Can be cleaned under running water – IP65 rated

    • Practical folding mechanism with rugged metal joint; easy and ready to use

    • Automatic final value recognition (auto-hold); min/max memory for all hold/auto-hold readings

  • testo Smart Probes HVAC/R Ultimate kit

    Order-Nr. 0563 0002 31

    Ultimate kit for all-round engineers in the field of heating, air conditioning, refrigeration and ventilation: The kit contains all the testo Smart Probes and is ideal for carrying out functional checks or for plant maintenance, in conjunction with your smartphone/tablet. The testo Smart Probes App enables you to work more easily and efficiently: Automatically calculate numerous parameters such as superheating/subcooling, target superheat, cooling/heating power, differential temperature or mould indication. Measurement data reports can be emailed directly as a PDF or Excel file.
    • For all measurements involving heating, air-conditioning, refrigeration and ventilation systems

    • All Smart Probes for temperature, pressure, humidity and flow in one kit

    • Display of measurement data progression as a graph or table

    • Transmission and analysis of measurement data via testo Smart Probes App

  • testo 868 - thermal imager with App

    Order-Nr. 0560 8681

    The testo 868 thermal imager is characterized by its professional measuring performance and its easy handling. It has the best thermal image quality in its class, an integrated digital camera and impressive smart functions. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.
    • Very good image quality: IR resolution of 160 x 120 pixels, via integrated testo SuperResolution Technology 320 x 240 pixels

    • Large temperature measuring range from -30°C to +650°C

    • Smart and networked: the free testo Thermography App enables you to write and send reports on site, as well as saving them online, and lots more.

    • Integrated digital camera

  • testo 110 - Temperature meter

    Order-Nr. 0560 1108

    Cold storage rooms, cold storage warehouses, outdoors: the testo 110 digital temperature meter shows what it’s really made of when temperatures start to drop. Thanks to the NTC technology tucked away inside, it can measure temperatures in very low temperature environments.
    • Extremely accurate, also in very low temperature ranges, i.e. cold storage rooms

    • Optional connectable temperature sensor and wireless sensor for different applications in the field

    • Audible alarm, user-defined thresholds

    • HACCP compliant, certified according to EN 13485 for use in the food sector

  • testo 872 - thermal imager with App

    Order-Nr. 0560 8721

    The testo 872 thermal imager gives you the best possible support for your work in professional industrial and building thermography. Take thermal images quickly, reliably and smartly with the highest image quality, very good thermal sensitivity and innovative functions. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.
    • Highest image quality: IR resolution of 320 x 240 pixels, via integrated testo SuperResolution Technology 640 x 480 pixels

    • Precise measurement: thermal sensitivity of 0.06°C

    • Smart and wireless: use your mobile device with the free testo Thermography App and wirelessly transmit readings from the testo 770-3 clamp meter and the testo 605i humidity measuring instrument (both available separately)

    • Integrated laser marker – can also be precisely visualized as a measuring point in the thermal image

  • testo 905-T2 - Surface thermometer with large measuring range

    Order-Nr. 0560 9056

    The testo 905-T2 surface thermometer can measure the temperature reliably and impressively fast even on uneven surfaces. Its measuring head with sprung thermocouple strip is what makes this possible. This efficient temperature measuring instrument is therefore suitable for diverse applications in the heating, plumbing and refrigeration trade (e.g. measurements on pipes or valves).
    • Suitable for measurements on uneven surfaces

    • Large measuring range: Temperature measurements up to +500 °C possible for a short time

    • Convenient reading of measurement results on the swivel display

    • Extremely quick response time

  • testo 810 - Infrared thermometer

    Order-Nr. 0560 0810

    The testo 810 infrared thermometer allows the simultaneous measurement of the air temperature and surface temperature of the object being measured - without contact. The infrared temperature measuring instrument automatically displays the temperature difference. This makes it particularly suitable for use in the heating, ventilation and air conditioning trade.
    • Simultaneous measurement of the surface temperature and air temperature

    • Non-contact measurement of the surface temperature (infrared thermometer)

    • Display of the temperature difference

    • Adjustable emission level

  • testo 922 - Digital temperature meter

    Order-Nr. 0560 9221

    Temperature measurements; measurements with up to three temperature sensors; direct display of temperature differences: the testo 922 digital temperature meter is ideal for professional use in the fields of heating, plumbing and air conditioning.
    • Temperature measurements and temperature difference display

    • Wide measuring range from -50 °C to 1 000 °C

    • Connecting points for two type K temperature sensors; wireless connectivity for a third temperature sensor

    • Wide range of optional sensors

  • testo 871 - thermal imager with App

    Order-Nr. 0560 8712

    The testo 871 thermal imager combines high infrared resolution with professional measuring performance and easy handling. Its high-quality pixel detector, an integrated digital camera and, last but not least, the innovative functions are the features that impress. The testo Thermography App enables the testo 871 to offer smart thermography to meet professional requirements in industry and trade. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.
    • Very good image quality: IR resolution of 240 x 180 pixels, via integrated testo SuperResolution Technology 480 x 360 pixels

    • Wireless networking: wireless transmission of readings from the testo 770-3 clamp meter and the testo 605i thermohygrometer (both available separately)

    • Smart: the free testo Thermography App enables you to write and send reports on site, as well as saving them online, and lots more.

    • Large temperature measuring range from -30°C to +650°C

  • testo 115i - Clamp thermometer operated via smartphone

    Order-Nr. 0560 2115 02

    Combined with a smartphone or tablet, the testo 115i clamp thermometer is the ideal temperature measuring instrument for carrying out servicing and troubleshooting on refrigeration, air conditioning and heating systems, as well as for installing them. It can also be used to measure flow and return temperatures.
    • Convenient temperature measurement on refrigeration, air conditioning and heating systems – thanks to wireless connection to your smartphone or tablet

    • Fast identification of temperature changes by graphic progression display

    • Measurement data analyzed and sent via testo Smart Probes App

    • Problem-free application at measuring points that are a long distance apart thanks to Bluetooth® range up to 100 m

  • testo 905-T1 - penetration thermometer (large measuring range)

    Order-Nr. 0560 9055

    The testo 905-T1 penetration thermometer enables reliable temperature measurements in liquids, soft or powdery substances and in the air. In doing so, it is the temperature measuring instrument's large measuring range and its short response time that make it stand out. Both advantages are due to the high-quality type K thermocouple probe.
    • Temperature measurements up to +500°C possible for a short time

    • Measuring values easy to read off thanks to a pivoting display

    • Quick response time

    • Long, pointed thermocouple probe: ideal for measurements in liquids, soft or powdery substances and in the air

  • testo 905 i - thermometer with smartphone operation

    Order-Nr. 0560 1905

    Check ambient temperatures and temperatures in ducts and at air outlets quickly, easily and professionally: with the testo 905i thermometer, which is optimized for your smartphone, nothing could be simpler.
    • Rapid detection of temperature change via graphical progress display

    • Measuring range -50 to +150 °C

    • Measurement data analyzed and sent via testo Smart Probes App

  • testo 805 i - infrared thermometer with smartphone operation

    Order-Nr. 0560 1805

    Carry out non-contact and App-controlled measurement of wall temperatures, as well as fuse and component temperatures in air conditioning systems: with the professional testo 805i infrared thermometer with 8-point laser circle for highly visible measuring spot marking. 
    • Non-contact infrared measurement of surface temperature

    • Easy selection of emission level via stored materials list

    • Highly visible marking of the measuring spot thanks to 8-point laser

    • Image documentation with readings and measuring spot marking

  • testo 835-T1 - Infrared thermometer

    Order-Nr. 0560 8351

    The practical infrared thermometer testo 835-T1 offers maximum safety and precision when measuring the temperature of smaller objects from a medium distance.
    • Reliable IR measurement up to 600 °C 

    • IR measurements from a safe distance

    • Memory for up to 200 readings; easy analysis with free-to-download software

    • 4-point-laser and 50:1 optics for precise measurements over greater distances 

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