Technical Data - TESTO 645 Instruction Manual

testo 645/445
General technical data
Memory space:
Power supply:
Alternative:
Typical
battery
lifetimes:
Operating
temperature:
Storage
temperature:
Weight:
Other features
Temperature measurement
Type K (NiCr-Ni)
Measuring range:
Accuracy*
at 22 °C:
Additional error over
operating
temperature range: ±0.2 °C
Resolution:
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Type J (FeCu-Ni)
Measuring range: -200 to +1000 °C
Up to 3000 readings
Accuracy*
Battery / rechargeable batt.
at 22 °C:
12 V mains unit
Battery recharging in instr.
Additional error
Temperature/humidity
over operating
probes, pressure probes,
temperature range: ±0.2 °C
vane probes:
Resolution:
30 to 45 h
Thermal probes,
The following can also be connected:
CO2 probes, 3-function
thermocouple:
probe:
>3 - 12 h
NTC
Reduce the hour times by
Measuring range:
a factor of 5 if a 9V battery
Accuracy*:
is used.
0 to +50 °C
-20 to +70 °C
Resolution:
Approx. 255 g incl. batteries
- Automatic recognition of
all connected probes
- RS232 interface for
data management
(electrically isolated)
-200 to +1370 °C
±0.3 °C or ±0.5 % of
reading
(the larger value applies)
0.1 °C
34
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Technical data - Instruments
±0.3 °C or ±0.5 % of
reading
(the larger value applies)
0.1 °C
Type S (Pt Rh-Pt)
-50 to +150 °C
±0.2 °C (-25 to +74.9 °C)
±0.4 °C (-50 to -25.1 °C/
+75 to +99.9 °C)
±0.5 % of reading
(+100 to +150 °C)
0.1 °C
Humidity measurement
-20 to +180 °C
Temperature:
Measuring range: 0 to 100 %RH
0.1 %RH
Resolution:
System Up to 1.0 %RH
accuracy*: (see probe data)
Calc. humidity td, g/m , g/kg, J/g
3
parameters: (pressure-compensated)
Warranty
Instruments 2 years
Probes 1 year
Terms of warranty: see website
www.testo.com/warranty
.com
testo 645/445
1.888.610.7664