Proline Fieldcheck
Device functions - electromagnetic measuring systems
Hauser
55
Function group LIMIT VALUES
You can specify the limit values for measured variables in this function group. If the deviation of a
verification step (see OPERATION, P. 38) lies within the configured limit values the result is
PASSED; if it lies outside of this range the result is FAILED. For quick and unambiguous
identification, the FAILED results are shown in white with a black background on the display.
!
Note!
For a frequency output operated in the pulse mode the fixed error limit is: ±1 pulse ±0.1% of the
pulse set number.
Function description
FUNCTION
VERIFICATION
LIMIT VALUES
BASIC FLOW LIM.
Use this function to specify the basis for calculating the permitted deviation of the
individual measuring points.
A higher limit is assigned to low flow velocities while higher flow velocities are closer to
the lower limit (similar to the error curve of the measuring device).
User input:
0.40 to 10.0 %
Factory setting:
0.5 %
CALCULATED FLOW
LIMITS
Use this function to read the value calculated by Fieldcheck during verification to
establish whether the result is PASSED or FAILED. A separate value is given for each of
measuring points MP1, MP2, MP3 and MP4.
DEVIATION CURRENT
OUTPUT
This function is only available if a current output was selected in the OUTPUTS function
User input:
0.02 to 10.0 mA
Factory setting:
0.05 mA
DEVIATION
FREQUENCY OUTPUT
This function is only available if a frequency output was selected in the OUTPUTS
function
54.
!
Note!
This function is not available on Promag 10-type devices.
User input:
1.0 to 10.0 Hz
Factory setting:
2.00 Hz
