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Configuration: summary of user functions via HART
®
Communicator HC 275 (Version 1.00)
“Reset default” values are in bold type in the “Input Range” column.
Refer to the HART
®
HC275 Communicator operating instructions for further operating details.
Function (Fct.)
Input Range
Description
1.0 PROCESS VAR.
1.1.0 MEASUREMENTS
1.1.1
LEVEL
Level value.
1.1.2
DISTANCE
Distance value.
1.1.3
VOLUME
Volume value if a strapping table is programmed
1.1.4
ULLAGE VOLUME
Ullage Volume value if a strapping table is programmed
1.2.0 INPUTS/OUTPUTS
1.2.1 FUNCTION
I
Function
associated with the current output (Primary Variable).
1.2.2
I
Current output value (mA)
1.2.3
%
Percentage of PV range
2.0 CONFIG./TEST
2.1.0 OPERATION
2.1.1.0 BASIS
PARAMETER
2.1.1.1
TANK HEIGHT
Enter probe length to 60.000 mm (2362”)
Tank height.
The tank height is defined as the distance between the bottom of the tank
and the lower flange surface.
As per order
2.1.1.2
PROBE LENGTH
Enter 0 mm to tank height but < 24.000 mm
(1063”)
This value has to be equal to the exact length of the probe. The only
situation when this value has to be changed is if the probe length has been
changed.
As per order
2.1.1.3
TIME CONSTANT
Enter to 100 seconds
The time constant allows filtering of possible signal fluctuations when the
medium surface is turbulent.
5 sec.
2.1.1.4
DEAD ZONE
Enter a value
Fct.1.5.1(Detection delay) … probe length.
Measurements near the flange may not be precise or reliable.
Measurement may not be precise in an area less than this recommended
value, depending on the probe type.
Warning: Critical Parameter
See “Minimal measuring distance”
Technical data of the probes