9.3.9
Lower range value [09]/Upper range value [10]
9.3.9.1
Lower range value [09] parameter
Sets the lower range value.
Indication on the dis‐
play:
LOWER RANGE
Setting range:
Within the measuring limits
Factory setting:
0 °C
The lower range value (4 mA) corresponds to 0% of the measuring range.
9.3.9.2
Upper range value [10] parameter
Sets the upper range value.
Indication on the dis‐
play:
UPPER RANGE
Setting range:
Within the measuring limits
Factory setting:
100 °C
9.3.9.3
Adjusting lower range value/upper range value
Introduction
The lower range value (4 mA) corresponds to 0% of the measuring range. The upper range value
(20 mA) corresponds to 100% of the measuring range. Using remote operation you can change
the relationship between the values of the lower range value/upper range value and the current
output. For example, lower range value corresponds to 20 mA.
You have the following options for assigning the desired temperature measurements to the
lower range value and the upper range value:
Device with display
Remote operation
Set lower range value
"Lower range value" parameter
Settings > Current output > Low‐
er range value
Set upper range value
"Upper range value" parameter
Settings > Current output > Up‐
per range value
The minimum permissible measuring span of the input type must not be underpassed. You can
find the minimum permissible measuring span of your input type in the section Technical data
(Page 193).
Procedure
1. Navigate to the parameter view.
Navigating in the views (Page 107)
2. In the parameter view, select the "Set lower range value" parameter.
Parameter assignment
9.3 Parameter assignment over device with display
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
148
Operating Instructions, 05/2020, A5E41864807-AB