testo 865 – thermal imager

  • Very good image quality: IR resolution of 160 x 120 pixels, via integrated testo SuperResolution Technology 320 x 240 pixels
  • Visualizing temperature differences from 0.12°C
  • Automatic detection of hot and cold spots
  • Extensive accessories included: case, pro software, USB cable, lithium-ion rechargeable battery

Click Here  to download the testo 865 – thermal imager data sheet

Click Here  to download the testo Thermal Imager  brochure

Click Here to download the Testo SuperResolution application note

Click Here  to download the IR- Soft brochure

Click Here  to watch the testo 865 – thermal imager  video

Click Here  to watch the testo facility management system video


The testo 865 thermal imager offers professional technology and concentrates on functions which are needed in a contractor’s daily work. The testo 865 is a user-friendly thermal imager, optimized for fast and efficient work. With the testo ScaleAssist functions ensuring optimum setting of the thermal image scale for building thermography and the IFOV warner making sure you avoid measurement errors, you will always generate the perfect infrared image.

Areas of application of the testo 865 thermal imager

Detect leaks, identify overheated connections, pinpoint thermal bridges or detect structural defects. The testo 865 thermal imager is ideal for applications in daily maintenance and installation work in trade and industry. It enables time-saving quality assurance and ensures reliable production control.

Technical highlights of the testo 865 thermal imager

The testo 865 thermal imager stands out thanks to its easy operation and has the following impressive technical features:

Very good image quality due to high resolution: 19,200 temperature measuring points ensure precise thermography. Infrared resolution of 160 x 120 pixels – via integrated SuperResolution Technology 320 x 240 pixels

  • Visualize temperature differences from 0.12°C
  • Critical temperature conditions are directly displayed via automatic hot-cold spot recognition
  • The IFOV warner means the distance from the measurement object / measurement spot size is determined and the measurement spot is shown on the thermal image – you therefore avoid measurement errors because the camera shows you exactly what you can measure
  • Pro software for image evaluation on the PC
  • You can choose to save thermal images as JPEGs

Delivery Scope

testo 865 thermal imager including USB cable, mains unit, lithium-ion rechargeable battery, pro software IRSoft (free download), commissioning instructions, short instructions, calibration protocol and case.

Technical Data
Infrared image output
Infrared resolution: 160 x 120 pixels
Focus: Fixed focus
Image refresh rate: 9 Hz
SuperResolution (IFOV): 2.1 mrad
SuperResolution (Pixel): 320 x 240 pixels
Geometric resolution (IFOV): 3.4 mrad
Minimum focus distance: <0.5 m
Field of view: 31° x 23°
Thermal sensitivity: 120 mK
Spectral range: 7.5 to 14 µm

Image presentation
Display type: 8.9 cm (3.5″) TFT, QVGA (320 x 240 pixels)
Display option: IR image only
Colours: 4 (iron, rainbow, cold-hot, grey)

Measuring range: -20 to +280 °C
Accuracy: ±2 °C, ±2 % of mv
Emissivity: 0.01 to 1
Reflected temperature: manual

Measuring function
Analysis function: Mean point measurement, hot/cold-spot recognition, Delta T
testo ScaleAssist: Included
IFOV warner: Included

Imager equipment
Full screen mode: Included
JPEG storage: Included
Video streaming: via USB
Standard lens: 31° x 23°
Interface: USB 2.0 Micro B

Imager storage
File format image: .bmt; .jpg; export option in .bmp; .jpg; .png; .xls; .csv
Storage device: Internal Memory (2.8 GB)

Power supply
Battery type: Fast-charging, Li-ion battery can be changed on-site
Operating time: 4 h
Charging options: In instrument / charger (optional)
Mains operation: yes

Ambient Condition
Air humidity: 20 to 80 %RH non-condensing
Housing protection class: IP54
Vibration: 2G
Storage temperature: -30 to +60 °C
Operating temperature: -15 to +50 °C

Physical specification
Housing: PC – ABS
Weight: 510 g
Dimensions: 219 x 96 x 95 mm

PC software
System requirements: Windows 10; Windows 8; Windows 7

Standards, tests, warrenty
EU-/EG-guidelines: EMC: 2014/30/EU

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Home > testo 865 – thermal imager

Location: IRELAND

Unit 21, Waterford Business Park,

Cork Road, Waterford

Ireland, X91 P224

Tel: +353 (0)51 392 391

E-mail: info@antech.ie

Contact: UK

Tel: +44 (0)20 346 898 13

E-mail: info@antechsolutions.co.uk

Web: www.antechsolutions.co.uk