testo 845 – The infrared thermometer with switch optics

The testo 845 is a compact infrared thermometer with switch optics for the non-contact measurement of surface temperatures. The switchable optics for far-field and close focus measurements make it possible to measure at short as well as at greater distances. Measurements in the farfield are taken at an optical resolution of 75:1. This allows surface temperatures to be measured accurately even at greater distances to the measurement object. At a distance of 1.2 metres to the measurement object, the measurement point diameter is only 16 mm. A cross laser marks the measurement site exactly. For measurements at a short distance to the measurement object, the close focus optics offer a measurement point diameter of only 1 mm at a distance of 70 mm. Two laser points mark the measurement area. Measurements can also be carried out by connecting additional probes. The limit values can be individually stored in the instrument; as soon as these upper and lower limit values are violated, an audible and an optical signal are given. testo 845, infrared thermometer with cross laser sighting and switchable optics for far-field measurement and close focus measurement, incl. PC software with USB cable, aluminium case, calibration protocol, incl. batteries. Sensor types: Infrared: Meas. range: -35 to +950°C. Accuracy: ±2.5°C (-35 to -20.1°C) ±1.5°C (-20 to +19.9°C) ±0.75°C (+20 to +99.9°C) ±0.75% of mv (+100 to +950°C). Resolution: 0.1°C.Type K (NiCr-Ni): Meas. range: -35 to +950°C. Accuracy:±0.75°C (-35 to +75°C) ±1% of mv (+75.1 to +950°C). Resolution: 0.1°C. General technical data: Operating temperature: -20 to +50°C. Storage temperature: -40 to +70°C. Battery type: 2 AA batteries. Battery life: 25 h (without laser), 10 h (with laser without light), 5 h (with laser and 50% light). Measurement rate t95: 150 ms: Scanning Max/Min/Alarm: 100 ms. Emissivity Adjustable: 0.1 to 1.0. Housing material: black/gray, metal screen. Optical resolution Far field: 75:1 16 mm @ 1200 mm (90%) Close focus: 1 mm @ 70 mm (90%). Dimensions: 155 x 58 x 195 mm. Weight: 465 g.