Burkert Type 8025 - Manual (Page 56)

56
operatingandcommissioning
Type 8025 / 8035
The daily totalizer can be reset from the Process level. See chap. "9.4".
→
If you do not want to adjust another parameter, go to the "END" parameter of the Parameters menu and press ENTER to
save the settings and go back to the Process level.
9.7. Details of the Test menu
To access the Test menu, simultaneously press keys 0......9
ENTER
for at least 5 s.
This menu comprises the following configurable parameters:
SPAN
Process level
FREqUENC.
FLOw
OFFSEt
12.6 L/MiN. END
0......9
Adjusting the OFFSET of the current output. See chap. "9.7.1".
Reading the rotational frequency of the paddle wheel. See chap. "9.7.3".
Simulating a flow rate to check the correct operating of the outputs. See chap. "9.7.4".
Go back to the Process level by saving the new OFFSET and
SPAN adjustments.
Adjusting the SPAN of the current output. See chap. "9.7.2".
When "END" is confirmed and the display indicates "OFFSET": enter new offser and/or span values.
Fig. 65: Diagram of the Test menu
9.7.1. Adjusting the offseT of the current output
This parameter makes it possible to adjust the 4 mA current value transmitted on the 4-20 mA output.
→
Connect a multimeter into the measurement loop.
OFFSEt
SPAN
ENTER
ENTER
OF= 4.02
OF= 4.00
0......9
→
The device generates a 4 mA current.
→
Measure the current given on the 4-20 mA output using a multimeter.
→
Enter the value displayed by the multimeter. The permitted offset
range is 3 to 5 mA.
→
Confirm.
Fig. 66: Adjustment of the OFFSET
→
Adjust the default 20 mA current value: see chap. "9.7.2".
The adjusted value of the default 4 mA value (parameter "OFFSET") is taken into account when leaving the parameter
"SPAN".
→
If you do not want to adjust another parameter, go to the "END" parameter of the Test menu and press
ENTER
to save the
settings and go back to the Process level.
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