Differential Temp - TESTO 300 LL NEXT LEVEL Instruction Manual

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:
2 Tap Differential
3
Start measurement. Tap

Zeroing the pressure sensor.

Reading is displayed.
4
End measurement: tap

Differential temp.

9.5.9
For this type of measurement, the
See Averaging section.
The measurement can also be carried out using Smart Probes.
The following Smart Probes can be connected:
testo 915i (0563 3915), testo 115i (0560 2115 02)
A differential temperature measurement can also be carried out with
just one Smart Probe testo 915i.
The measuring values (T1 and T2) for determining the differential
temperature can be recorded by pressing the button on the Smart
Probes testo 915i (<1 second).
Two external temperature probes must be connected. Alternatively,

wireless Smart Probes such as the testo 115i or testo 915i can be
used. However, a maximum of just four Smart Probes can be used at
the same time.
1
Call up function:
2
Start measurement: tap

The measured values and the calculated differential temperature
Δt
(T1 - T2) are displayed.
| Differential pressure
pressure.
.
.
Averaging
Differential temp.
|
.
9 Performing the measurement
option is also available.
67