TESTO 300 - Differential Temp

14 Performing the measurement
73
14.2.9 Differential temp.
For this type of measurement, the Averaging option is also available.
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: | Differential temp.
2
Start measurement: tap .

The measured values and the calculated differential temperature
Δt (T1 - T2) are displayed.
3
End measurement: tap .
Automatic display after connection of several Smart Probe testo 115i or
testo 915i during differential temperature measurement
If several temperature probes are connected in total (external probes and/or
testo 115i or testo 915i), the temperature probes are used for differential
temperature measurement according to the following procedure.
Connected cable probe
(maximum 1 possible)
Number of connected
Smart Probes
(testo 115i and/or
testo 915i)
Display and use of the temperature
probe by temperature channel
No
1
Temperature channel T1: t115i/915i
dT is displayed.
Yes
-
Temperature channel T1: Cable probe
(ext2):
T2 and dT are displayed as "---".