15
UK
5.5.3 Temperature measurement
[SEL2] = [TEMP]
For temperature measurement the analogue signal can be scaled. The limits of
the measuring range for the lower output signal (analogue start point = ASP2) and
the upper output signal (analogue end point = AEP2) can be set.
Minimum distance between [ASP2] and [AEP2] = 22 C° / 40 °F.
If the measuring range is not reached or is exceeded by more than 10 %,
[UL] / [OL] is displayed
Output function current output:
Fig. 5-8
Fig. 5-9
Maximum measuring range at [ou2] = [I]
Scaled measuring range at [ou2] = [I]
MAW
MEW
20,5
20
4
3,8
T [°C/°F]
I [mA]
I [mA]
T [°C/°F]
MEW
MAW
AEP2
ASP2
20.5
20
4
3.8
MAW: Initial value of the measuring range
MEW: Final value of the measuring range
ASP2: Analogue start point
AEP2: Analogue end point
Within the measuring range (-20...90 °C / -4...194 °F) the output signal is between
4...20 mA at [ou2] = [I] or 20...4 mA at [ou2] = [InEG] (without figure).
If the temperature value (T) is outside the measuring range, the output signal
reacts as below:
[ou2] = [I]
[ou2] = [InEG]
T < MAW (ASP2)
3.8...4 mA
20.5...20 mA
T > MEW (AEP2)
20...2.5 mA
4...3.8 mA