testo 865s thermal imaging camera

Description

The testo 865s Thermal Imaging Camera is the perfect entry-level thermal imaging solution for professionals who demand precision and reliability. Designed for electricians, HVAC technicians, and building inspectors, this thermal imager captures detailed infrared images with 160 x 120 pixel resolution (upgradable to 320 x 240 pixels with SuperResolution technology), ensuring accurate temperature measurement from -20°C to 280°C.

With thermal sensitivity of 0.1°C, the testo 865s detects even the smallest temperature variations, making it ideal for pinpointing insulation gaps, overheating components, pipework leaks, and structural defects. Automatic hot/cold spot recognition simplifies diagnostics, highlighting temperature anomalies instantly.

Built for fast and efficient work, the testo 865s features intuitive one-handed operation with a simple, ergonomic design. The IFOV warning system ensures accurate measurements, while the ScaleAssist function automatically optimizes the thermal image scale, preventing interpretation errors. Thermal images can be stored on the large 2.8GB internal memory and transferred to a PC via USB for in-depth analysis using Testo’s free IRSoft software.

Durability is key for professionals working in demanding environments, and the testo 865s is built to last. With an IP54-rated splash-proof and dustproof casing, it withstands the rigors of daily use. The rechargeable battery provides up to 4 hours of continuous operation, ensuring you can complete inspections without interruptions.

Whether you're performing building inspections, electrical diagnostics, or HVAC system analysis, the testo 865s delivers high-quality thermal imaging at an unbeatable price-performance ratio.

Delivery Scope

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

Technical data

Standards

EU-/EG-guidelines	EMC: 2014/30/EU

Infrared image output

Field of view	31° x 23°
Focus	Fixed focus
Minimum focus distance	<0.5 m
Geometric resolution (IFOV)	3.4 mrad
Image refresh rate	9 Hz
Infrared resolution	160 x 120 pixels
SuperResolution (IFOV)	2.1 mrad
SuperResolution (Pixel)	320 x 240 pixels
Thermal sensitivity	<0.1 °C (100 mK)
Spectral range	7.5 to 14 µm

Image presentation

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

Applications

Overview of applications

Preventive maintenance

Detecting structural defects and ensuring construction quality

Easy checking of heating systems and installations

Localize pipe ruptures

Locating leaks in flat roofs

Preventive maintenance

Ideal for the early identification of imminent malfunctions or defects on plants and machines: Reliably record temperature increases with a thermal imager.

Fast detection of critical thermal status (so-called HotSpots) during continuing operation
Avoid expensive damage, downtimes and fire risks on plants and machines

Electrical maintenance

Test switching cabinets, electrical conditions, photovoltaic plants
Evaluate heat status in low, medium and high voltage plants

Mechanical maintenance

Identify wear on machines
Test motors, bearings, shafts

Detecting structural defects and ensuring construction quality

Detect potential building defects, prove quality and the implementation of construction measures without contact – with the help of thermal images
Test air-tightness of windows and doors
Locate insulation errors and cold bridges in a building shell
Detect and visualize mould-risk areas

Easy checking of heating systems and installations

test heating and air conditioning/ventilation systems: Use a thermal imager to identify irregularities in the temperature distribution quickly and easily
Localization of the course of heating loops in underfloor heating systems
Testo radiators for silting
Measure flow and return temperatures

Localize pipe ruptures

Reliably determine pipe ruptures with the help of a thermal imager – without unnecessarily opening walls and floors
Precise localization of leakages in underfloor heating and other inaccessible pipe systems

Locating leaks in flat roofs

Detection of damp in roofs: Based on temperature differences (such as occur mainly in flat roofs), thermal imagers show areas on the roof with sealed-in moisture or damaged insulation

testo 865s - Thermal imaging camera (160 x 120 pixels)

testo 865s - Thermal imaging camera (160 x 120 pixels)