11. Technical data
30
11.3 testo 177-T3
Parameter ......................................................Temperature (°C/°F)
Sensor ................................................NTC (internal and external)
Number of measuring channels ..........4 channel (2x ext./1x int./
............................................................1x event, e.g. door contact)
Measuring range ......................................-40 to +70 °C (internal)
................................................................-40 to +120 °C (external)
Accuracy, internal ..................................±0.8 °C (-40 to -25,1 °C)
(System) ....................................................±0.4 °C (-25 to +70 °C)
............................................................................................±1 digit
Accuracy, external..................................±0.4 °C (-40 to -25,1 °C)
(only Logger) ............................................±0.2 °C (-25 to +70 °C)
............................................................±0.4 °C (+70.1 to +120 °C)
............................................................................................±1 digit
Resolution............................................................................0.1 °C
Measuring rate..............2 s to 24 h (event channel switched off) /
........................................2 s to 9,1 h (event channel switched on)
................2 measuring rates (event-dependent, freely selectable)
Adaptation time t
90
(internal)Approx. 30 min at wind speed 1m/s
Storage temperature................................................-40 to +85 °C
Operating temperature ............................................-40 to +70 °C
Display ........................................................................LCD, 2 lines
Operating temperature/Display ..............................-30 to +65 °C
Memory capacity ................................................48,000 readings
Protection class ....................................................................IP 67
Housing ..........................................................................ABS/TPE
Dimensions in mm (lxwxh) ....................................103 x 64 x 33
Weight ....................................................................................127g
Battery ....................................................................Lithium (1 AA)
Battery life............................................................Typical: 5 years*
....(Measuring rate: 15 Min., Operating temperature: -10 to +50°C,
......................................Display: On, Status led (green LED): Off)
* See Chapter 11.6 Battery life, P. 33
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