TESTO 445 Instruction Manual page 35

testo 645
Temperature measurement
Pt100
measuring range:-200 to +800 °C
Accuracy*
at 22 °C:
Additional error
over operating
temperature range: ±0.1 °C
Resolution:
testo 445
Velocity measurement
Vane
Measuring range:0 to 60 m/s
Resolution:
Accuracy:
Thermal anemometer
Measuring range:0 to 20 m/s
Resolution:
Accuracy:
Pitot tube
Measuring range:0 to 10 mbar / 0 to 100 mbar
Resolution:
Accuracy:
Volume flow in m /h, m
3
cfm (ft /min)
3
Measuring range:99,999 m
Pressure measurement
Measuring range: Resolution:
-40 mbar to 100 mbar 0.01 mbar
-4 mbar to 10 mbar
2000 mbar
±0.2 °C or ±0.1 % of
reading
(the larger value applies)
0.1 °C
0.01 m/s
See probe data
0.01 m/s (0 to 10 m/s)
0.1 m/s (remaining range)
See probe data
0 to 40 m/s / 0 to 100 m/s
0.01 m/s
See probe data
/min, l/s,
3
/h
3
Accuracy*:
±0.1 mbar
(0 to 20 mbar)
1 % of reading
(rem. range)
0.001 mbar ±0.01 mbar
1 mbar ±2 mbar
Technical data - Instruments
Pressure units can be switched:
Calculated velocity values
density compensated: 0 to 100 m/s
Calculated volume flow values:
m
CO measurement
2
Measuring range:0 to 10000 ppm
Resolution:
Accuracy*:
CO measurement
Measuring range:0 to 500 ppm
Resolution:
Accuracy*:
Warranty
Instruments
Probes
* Accuracy:
35
testo 645/445
mbar, psi; in W("H
/h, m /min, l/s, cfm (ft
3 3
0 to 1 vol. %
1 ppm
0.0001 vol. %
±50 ppm ±2 % of reading
(0 to 5000 ppm)
±100 ppm ±3 % of reading
(remaining range)
1 ppm
±5 ppm (0 to 100 ppm)
±5 % of measured value
(remaining range)
2 years
1 year
±1 digit
O)
2
/min)
3