Configure process measurement
Options for
Temperature Measurement Unit
are shown in Table 5-10 .
Table 5-10
Options for
Temperature Measurement Unit
Label
Description
Display
ProLink II
Field Communicator
Degrees Celsius
°C
degC
degC
Degrees Fahrenheit
°F
degF
degF
Degrees Rankine
°R
degR
degR
Kelvin
°K
degK
Kelvin
5.7.2
Configure
Temperature Damping
Display
Not available
ProLink II
ProLink→Configuration→Temperature→Temp Damping
Field Communicator
Configure→Manual Setup→Measurements→Temperature→Temp Damping
Damping is used to smooth out small, rapid fluctuations in process measurement. The
Damping Value
specifies the time period (in seconds) over which the transmitter will spread changes in the reported
process variable. At the end of the interval, the reported process variable will reflect 63% of the change
in the actual measured value.
Tips
• A high damping value makes the process variable appear smoother because the reported value
must change slowly.
• A low damping value makes the process variable appear more erratic because the reported
value changes more quickly.
Procedure
Enter the desired value for
Temperature Damping
.
The default value is 4.8 seconds. The range is 0.0 seconds to 38.4 seconds.
When you enter a value for
Temperature Damping
, the transmitter automatically rounds it down to the
nearest valid value. Valid values for
Temperature Damping
are
0
,
0.6
,
1.2
,
2.4
,
4.8
, …
38.4
.
Effect of
Temperature Damping
Temperature Damping
affects the response speed for temperature compensation. Temperature
compensation adjusts process measurement to compensate for the effect of temperature on sensor
tube stiffness.
Configuration and Use Manual
89