TESTO 440 Instruction Manual page 34

Climate measuring instrument
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3 Operation
Order number
0635 9372
0635 9431
0635 9432
0635 1052
0560 1405
A maximum of 1 Bluetooth
connected. If two flow probes are connected, a cable probe is used for
the funnel volume flow.
Preparing for measurement
1
Press
You can set the following parameters:
- Measuring Type: multi-point/timed avg.
- Volume Flow Unit: m
- Correction Factor: 1% to 200%
In a multi-point measurement, a mean value is calculated from the
individual measuring values.
In a timed average measurement, a mean value is calculated over a
certain period.
Several points can be measured. This generates a timed average/multi-
point total mean value.
32
Name
High-precision vane probe (Ø 100 mm) including
temperature sensor, fixed cable
Vane probe (Ø 100 mm) with Bluetooth
temperature sensor
Vane probe (Ø 100 mm) including temperature sensor,
fixed cable
Fume cupboard probe, fixed cable
testo 405 i - thermal anemometer operated by
smartphone
®
to configure the measurement.
3
/h, cfm, l/s, m
probe and one cable probe can be
3
/s
®
, including

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