nvent raychem tcontrol-cont-03 Operating And Installation Manual page 22

Value /
Parameters Selection
-1999 ...
Measured
value offset 0 ... +9999
OFFS
-1999 ...
Scale low
level +9999
SCL
-1999 ...
Scale high
level +9999
SCH
0.0 ...
Digital filter
0.6 ... 100.0
dF
CAUTION!
Measured value offset: The controller uses the corrected value
for calculation (= displayed value). This value does not comply
with the value measured at the measuring point.
Incorrect use can cause inadmissible control values.
Only carry out a measured value offset within the admissible range.
Value /
Parameters Selection
1
Temperature
unit 2
Un t
Correction 0...
value KTY at 2000 ...
25 °C
4000
(Setup)
22 | nVent.com
Description
The measured value correction (offset)
is used to correct a measured value by a
certain amount upward or downward.
Examples:
Measured value Offset Displayed value
294.7
295.3
On transducers with standard signal, a
display value is assigned to the physical
signal (scaling).
Example: 0 ... 20 mA = 0 ... 1500°C.
The range of the physical signal can be
20% wider or narrower without generating
an overrange/underrange signal.
To adapt the digital input filter (time in
seconds; 0s = filter off).
63 % of the alterations are acquired after
2x filter time constant (2nd order filter) at a
step change.
When the filter time constant is large:
- High damping of interference signals
- S low reaction of the process value display
to process value changes
- Low limit frequency (low-pass filter)
Description
deg. Celsius
deg. Fahrenheit
Unit for temperature values
Resistance in ohms at 25 °C/77 °F for
"KTY 2-wire" probe type
Setting in the Setup program
(-> Analog input -> Analog input 1)
+0.3 295.0
-0.3 295.0