Endress+Hauser Mycom S CLM 153 Operating Instructions Manual page 39

Mycom S CLM 153
⇒
PARAM
Endress+Hauser
Use the following formula to calculate the α values depending on the temperatures
occurring in your process:
Enter the α -T value pairs calculated with this formula into the table in Field GBB3. The
transmitter is then ready for operation.
To enter the menu, proceed as follows:
CODE CHOICE
(default = bold)
G1 Temperature
Create alpha table
Reference temperature
Temperature:
GA1 Measuring circuit 1
Measuring circuit 2
Measuring circuit 1 (or 2, optional):
ATC CH1
ATC CH2
MTC
MTC+Temp
GAA1 Pt 100
Pt 1000
NTC 30k
GAA2 Temp.comp.:
Alpha value:
Actual temp.:
Offset:
k T ( ) k T ( )
–
100
α ⋅ 0 (
------------ - ------------------------------ T T
= ;
( )
k T T T –
0 0
⇒
INFO
Selection for temperature compensation
Temperature = automatic (ATC) or manual (MTC)
temperature compensation.
Create alpha table: Enter conductivity/temperature
value pairs for a temperature compensation by means
of the table created.
Reference temperature: The temperature to which you
apply to.
Select the measuring circuit
you wish to configure.
Select temperature compensation channel 1/2
ATC: Automatic temperature compensation via tempe-
rature sensor
MTC: Temperature compensation via manual value
entry
MTC+Temp: Temperature compensation via manual
temperature entry. The displayed temperature,
however, is measured by the temperature sensor.
Select temperature sensor channel 1/2
linear Temperature compensation channel 1/2
2.10%/K Temp. comp.: Selection of the temperature
25.0 °C compensation – none, linear, NaCl, Table 1 to 4
Alpha value: Entry of the conductivity coefficient α .
0.0 °C
Actual temp.: The measured temperature is displayed.
Offset: Temperature difference between measured and
output temperature (–10 ... +10 °C).
6 Commissioning
≠ )
0
39