Testo 881-2 Thermal Imager NETD<50mK
The thermal imager Testo 881-2 offers the best thermal sensitivity of < 50 mK providing the highest image quality. This allows you to measure even the smallest temperature differences, and obtain high resolution infrared images at any time. A wide-angle and a telephoto lens allow adaptation to the different sizes and distances of measurement objects. FPA 160 x 120 pixels, a.Si, 32° x 23° / 0.1 m (standard lens) & 9° x 7° / 0.5 m (telephoto lens) temp ramge -20 °C to 100 °C / 0 °to +350 °C (switchable), High temperature measurement (optional)+350 °C to +550 °C. Operating time
approx. 4 hours.
Product Description
Highest image quality due to NETD < 50 mK
With a thermal resolution of < 50 mK, the testo 881 delivers high definition images which emphasise and visualise even the smallest temperature differences.
Voice recording with the practical headset
With the integrated voice recording, you can comment any infrared image directly during the application. This valuable information is stored together with the thermal image.
Built-in digital camera with power LEDs
In addition to the infrared recording, you store a parallel real image of the measurement site with the testo 881. The power LEDs guarantee you optimum illumination of dark areas when recording real images.
Exchangeable lenses
A wide-angle and a telephoto lens allow you the adaptation to the very different sizes and distances of measurement objects.
Special measurement mode for detecting areas with danger of mould
By entering the ambient conditions, you can visualise areas in danger of mould growth in the thermal image at a glance.
Min/Max on Area calculation
The minimum and maximum values of an image section can be determined live directly on site and at a glance.
Lens protection glass
The germanium lens protection glass protects the optics from dirt and scratching.
Measuring range up to 550°C optionally possible
With the high temperature option, you can extend the measuring range of the testo 881 flexibly to up to 550 °C.

Testo 881-2 Set
In addition to the equipment of the testo 881-2, the set also includes:
- Telephoto lens 9° x 7°
- Additional battery
- Soft case
- Fast battery charger
Specifications
| Detector | 160 x 120 pixels |
| Highest thermal sensitivity (NETD) | < 50 mK |
| Temperature range | -20 °C to +350 °C |
| Image refresh rate | 33 Hz* |
| Lens 32° x 23° | standard |
| Exchangeable telephoto lens 9° x 7° | Optional |
| Germanium Lens protection glass | standard |
| High temperature measurement up to 550°C | optional |
| Integrated digital camera | standard |
| Integrated power LEDs | standard |
| Voice recording using the headset | standard |
| Laser** | standard |
| Motor focus | standard |
| Display of surface moisture (via manual input) | standard |
| Isotherm display in instrument | standard |
| Min/Max on Area calculation | standard |
| Auto Hot/Cold Spot Recognition | standard |
| The imager is delivered in a robust case incl. pro software, SD card, USB cable, mains unit, and Li ion rechargeable battery. |








