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testo 875-1i - Thermal imager (160 x 120 pixels, App, manual focus)

0563 0875 V1
  • Very good image quality: IR resolution 160 × 120 pixels, with SuperResolution Technology 320 × 240 pixels
  • Precise measurement: thermal sensitivity < 50 mK, high-quality 32° × 23° lens with manual focus, automatic hot/cold spot detection
  • Built-in digital camera creates a real image in parallel to the thermal image
  • Comprehensive accessories, including: robust case, pro software, SD card, carrying strap, mains unit and lots more
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    Make sure you get the testo 875-1i thermal imager with built-in digital camera for professional industrial and building thermography!
    You can carry out completely non-destructive tests on materials and components in industrial thermography with the testo 875-1i. This allows you to reveal problems in industrial maintenance and production monitoring before a malfunction occurs or fire risks develop. And for good measure, you can create a real image in parallel to the thermal image thanks to the built-in digital camera. This makes documentation and assignment easier for you.
    You can detect possible structural defects with the testo 875-1i thermal imager in building thermography. With the excellent thermal sensitivity of < 50 mK, you can quickly and efficiently track down energy losses and so help your customers to save expensive heating costs and plan refurbishments.
    In the “Applications” tab, you can find out more about the thermal imager's fields of application.

    The testo 875-1i infrared camera’s technical features

    The testo 875-1i thermal imager is characterised by its intuitive operation, excellent thermal sensitivity and built-in digital camera. Read all the important information here:
    • Built-in digital camera: Recording real images in parallel to each thermal image makes documentation and assignment easier
    • Resolution and image quality: Detector size 160 × 120 pixels = 19 200 temperature measuring points. SuperResolution Technology enables you to take image quality right up to the next level of 320 × 240 pixels in next to no time. Four times as many readings and a geometric resolution that has been improved by a factor of 1.6 mean you get even more detail and even greater reliability with thermographic measurements
    • Thermal sensitivity < 50 mK: Thanks to a temperature resolution of < 50 mK, even the smallest temperature differences can be seen
    • High-quality 32° × 23° lens: The lens with its manual focusing enables a wide field of view and an ideal overview of the temperature distribution, along with precise focusing on the object being measured
    • Automatic hot/cold spot detection: Critical temperature conditions are directly displayed during thermography
    • Solar mode: The solar radiation value can be input into the thermal imager and stored with each thermal image
    •  Pro software for image evaluation on the PC included. You can also choose to save the thermal images as JPEGs. Find out more about the software
    •  Measuring range: -30 to +350 °C

    The testo 875-1i thermal imager with SuperResolution and digital camera is supplied together with the following accessories:
    •  Robust case
    • Pro software IRSoft (free download)
    • Soft case
    • Carrying strap for the thermal imager
    • SD memory card
    • USB cable for data transfer to PC
    • Lens cleaning cloth
    • Mains unit
    •  Li-ion battery
    • Adapter for tripod mounting

    Ambient Condition

    Storage temperature
    −30 °C; 60 °C
    Operating temperature
    −15 °C; 40 °C
    Air humidity
    20 to 80 %RH non-condensing
    Housing protection class

    Image output visual

    Image size
    640 x 480 pixels
    Minimum focus distance
    0.4 m

    Image presentation

    Display type
    3.5" LCD with 320 x 240 pixels
    Display option
    IR image only; real image only; IR image / real image
    Number of colours
    10 (iron, rainbow, rainbow HC, cold-hot, blue-red, grey, inverted grey, sepia, Testo, iron HT)
    Video output
    USB 2.0

    Checking as part of mechanical maintenance

    Signs of wear in machinery often become apparent long before a malfunction, due to an increase in temperature. Possible causes are friction, incorrect adjustment, tolerances of mechanical components or a lack of lubricant. With a thermal imager, any suspicious changes can be spotted immediately. The main advantage of using thermography in a maintenance operation: it is non-contact and can therefore be carried out on all mechanical installations during operation and from a safe distance.

    Typical applications for the thermal imager:

    • Checking engines
    • Checking bearings
    • Checking shafts


    Checking as part of electrical maintenance

    In electrical installations or cables, increased temperatures are always an indication of an overload, an imminent malfunction or an existing defect. Testo thermal imagers facilitate evaluation of the heat status of low, medium and high-voltage systems. Thermographic images lead to the early detection of defective components or connections, so that the necessary preventive measures can be introduced in a targeted way. Thermography therefore minimizes dangerous fire risks and prevents costly production downtimes.

    Typical applications for the thermal imager:

    • Checking switch cabinets
    • Checking electrical connections
    • Monitoring and checking photovoltaic systems
    • Checking as part of mechanical maintenance


    Detecting structural defects and ensuring construction quality

    Analysis with a Testo thermal imager is a fast and efficient method of detecting possible structural defects. Furthermore, Testo thermal imagers are ideal for providing proof of the quality and the correct implementation of construction measures. Any heat losses, humidity and areas of air permeability in a building are visible in the thermal image. The testo 870 thermal imager makes it possible to detect faulty thermal insulation and structural damage – all using a non-contact method!

    Typical applications for the thermal imager:

    • Checking the air tightness of windows and doors
    • Finding insulation defects and thermal bridges in the building shell
    • Detecting areas that are prone to mould


    Locating leaks in flat roofs

    Damp areas in the roof structure, in particular in flat roofs, store the warmth from the sun for longer than intact areas. This means the roof structure cools unevenly in the evenings. Testo thermal imagers use these temperature differences to pinpoint the exact roof areas with trapped moisture or damaged insulation.


    Easy monitoring of heating and installation systems

    Testo thermal imagers are easy and intuitive to operate, so they are ideal for quickly and reliably checking heating, ventilation and air conditioning systems. A quick glance with the thermal imager is enough to discover irregularities in the temperature distribution. Thus, thermography can be used to easily locate clogged radiators and leaks.

    Typical applications for the thermal imager:


    • Pinpointing the course of heating loops in an underfloor heating system
    • Checking radiators for the build-up of deposits
    • Measuring the supply and return temperature
    • Locating leaks



    Enostavno preverjanje ogrevalnih sistemov in napeljav

    • preverjanje ogrevalnih in klimatskih prezračevalnih sistemov: Uporabite termično kamero za hitro in enostavno prepoznavanje nepravilnosti v razporeditvi temperature
    • Lociranje poteka ogrevalnih zank v sistemih talnega gretja
    • Preverjanje grelnikov Testo za usedanje
    • Merenje temperatur dovoda in povratka
    testo 8xx application

    Lociranje poka cevi

    • Zanesljivo določanje pretrganja cevi s pomočjo termovizijske kamere - brez nepotrebnega odpiranja sten in tal
    • Natančna lokalizacija puščanj v talnem ogrevanju in drugih nedostopnih cevovodih
    testo 8xx application

    Lociranje puščanj na ravnih strehah

    • Zaznavanje vlage v strehah: Na osnovi temperaturnih razlik (kot se pojavljajo predvsem pri ravnih strehah) termovizijske kamere prikažejo območja na strehi, kjer se je zadržala vlaga ali poškodovana izolacija
    testo 8xx application