testo 865, Thermal imager

The testo 865 thermal imager is a professional instrument focused on solving the most important tasks for a specialist’s daily work.

The testo ScaleAssist function allows you to adjust the thermal image temperature scale so that it is optimal for building thermography, and the IFOV warner function helps you avoid measurement errors, ensuring your infrared images are always perfect.

Application Areas of the testo 865 Thermal Imager
Locating leaks, identifying overheating connections, accurately detecting thermal bridges, or defects in building envelopes.

The testo 865 thermal imager is optimal for use in daily maintenance and installation work in construction and industry. It ensures fast and reliable production quality control.

Key Technical Specifications of the testo 865 Thermal Imager

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Description

The testo 865 thermal imager is characterized by its ease of use and boasts the following impressive technical characteristics:

  • Very good image quality thanks to high resolution: 19,200 temperature measurement points provide highly accurate thermograms. The detector size is 160 x 120 pixels, and the integrated SuperResolution technology increases the resolution to 320 x 240 pixels
  • Visualization of temperature difference from 0.12°C
  • Critical thermal status is immediately visible on the display thanks to automatic hot/cold spot recognition
  • The IFOV warner function determines the distance to the measured object and the size of the smallest measurement spot that is shown on the thermogram. This allows you to avoid measurement errors, as the display shows you exactly what you can measure
  • Professional software for image analysis on a PC
  • You can save thermograms in JPEG format

Scope of Delivery
testo 865 thermal imager, including USB cable, power supply unit, Lithium-ion battery, professional IRSoft software (free download), instruction manual, quick start guide, factory calibration protocol, and case.


Technical Data (Order No. 0560 8650)
Infrared Image
Focus:Fixed focus
Infrared Resolution:160 x 120 pixels
Frame Rate:9 Hz
Spatial Resolution (IFOV):3.4 mrad
SuperResolution (IFOV):2.1 mrad
SuperResolution (Pixels):320 x 240 pixels
Minimum Focus Distance:<0.5 m
Field of View:31° x 23°
Thermal Sensitivity:120 mK
Spectral Range:7.5 … 14 µm
Image Presentation
Display Option:IR image only
Color Palette:4 (iron, rainbow, cold-hot, grey)
Display Type:8.9 cm (3.5″) TFT, QVGA (320 x 240 pixels)
Measurement
Measurement Range:-20 … +280 °C
Accuracy:±2 °C, ±2 % of meas. val.
Emissivity:0.01 … 1
Reflected Temperature:Manual
Measurement Function
Analysis Function:Center spot measurement, hot/cold spot recognition, temperature difference
testo ScaleAssist Function:Included in scope of delivery
IFOV warner Function:Included in scope of delivery
Thermal Imager Equipment
Full Screen Mode:Included in scope of delivery
Image Storage in JPEG format:Included in scope of delivery
Video Data Transfer:via USB
Standard Lens:31° x 23°
Interface:USB 2.0 Micro B
Storage
Image File Format:.bmt; .jpg; Export option to .bmp; .jpg; .png; .xls; .csv
Data Storage Medium:Internal memory (2.8 GB)
Power Supply
Battery Type:Fast-charging Lithium-ion battery (replaceable on the measuring site)
Operating Time:4 h
Mains Operation:Yes
Environmental Conditions
Protection Class (Housing):IP54
Vibration:2G
Air Humidity:+20 … +80% non-condensing
Storage Temperature:-30 … +60 °C
Operating Temperature:-15 … +50 °C
Physical Characteristics
Housing:ABS, Polycarbonate
Weight:510 g
Dimensions:219 x 96 x 95 mm
PC Software and General Data
System Requirements (PC):Windows® 10; Windows 8; Windows 7
EU Directives:EMC: 2014/30/EU
Product Color:Black
Display Illumination:Bright / Normal / Dark