TESTO 300 LL - Differential pressure; Differential temperature

9 Performing the measurement
51
9.6.6
Differential pressure
WARNING
Dangerous mixture of gases!
Danger of explosion!
- Make sure there are no leaks between the sampling point and the
measuring instrument.
- Do not smoke or use naked flames during the measurement.

The gas pressure kit (0554 1203) must be connected.

For an instrument with no dilution option: The minus connection for
differential pressure measurement must be depressurized at the start of
the measurement (ambient pressure, instrument not connected to
system being checked), since the pressure sensor is zeroed.
1
Call up function: | Differential pressure
2
Tap Differential pressure.
3
Start measurement: tap .

Zeroing the pressure sensor.

Reading is displayed.
4
End measurement: tap .
9.6.7
Differential temperature

The differential temperature kit (0554 1208) or two external temperature
probes must be connected.
1
Call up function: | Differential temperature
2
Start measurement: tap .

The readings and the calculated differential temperature ΔT (T1 - T2)
are displayed.
3
End measurement: tap .
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