Technical Data - Testo 845 Bedienungsanleitung

11. Technical data

Description
Measurement parameter
Measurement value recorder
Measuring range
Resolution
Accuracy IR (at 23°C) +/- 1 digit
Accuracy °C contact (Type K) +/- 1 digit
Accuracy humidity module +/- 1 digit
Emission factor
Wavelength
Switchable distance ratio
Probe
Measurement rate
Application temperature
Storage temperature
Battery type
Battery life
Battery exchange
Housing
Display
Dimensions testo 845 in mm (LBH)
Dimensions case in mm (LBH)
Weight testo 845 without humidity module
Weight testo 845 with humidity module
Weight instrument and case
EU guideline
Sensitivity IR measurement:
Interference:
• Humidity module 0 to 100%RH
• Contact °C -35 to +950 °C
0.1°C (°C measurement parameters)
+/- 2.5°C (-35 to -20.1°C)
+/-1.5°C (-20 to +19.9°C)
+/-0.75°C (+20.0 to +99.9°C)
+/-0.75% of m.v.(+100 to +950°C)
+/- 0.75°C (-35 to +75°C)
+/-1 % of m.v. (+75.1 to +950°C)
+/- 2% RH (2 to 98% RH)
+/-1.0 °C (remaining range)
Far field: 75:1 (16mm, distance 1200mm)
Close focus: 1mm, distance 70mm
Scanning max./min./Alarm: 100 ms
10 h (with laser without backlight)
5 h (with laser and 50% backlight)
ABS (black, grey), metal cover
± 2°C (± 3.6°F) for 640 MHz to 680 MHz in 2.5 V/m field.
trade-typical limit according to EN 61326-1
11. Technical data
testo 845
Temperature (°C / °F)
Infrared sensor
• IR °C -35°C to +950°C
0 to +50°C
-20 to +50°C td
0.1%RH (humidity)
0.1°C td (dewpoint)
+/-0.5 °C (+10 to +40°C)
adjustable 0.1 to 1.0
8 to14 µm
integrated infrared
t95: 150 ms
-20°C to +50°C
-40°C to +70°C
2 x AA AlMn
25 h (without laser)
by user
three-line with backlight
155 x 58 x 195
405 x 340 x 93
455 g
465 g
2700 g
89/336/EWG
(+20.0...+99,9°C)
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