Span Adjustment; Calibration Of The Flow Zero Point - Burkert 8045 Instruction Manual

4.5.2 Span adjustment

Span compensation provides the option of changing the basic setting of 20 mA. The
procedure is identical to that of the offset compensation above. The transmitter generates
20mA if the
ENTER
menu.
Measure the generated current with an ammeter. If the displayed value is incorrect it can
be corrected by entering the measured value on the ammeter.
Adjustment range: + / - 0.5mA
CALIB 0
The corrected value of 20mA is calculated when
position within the test menu.

4.5.3 Calibration of the flow zero point

Fill the pipe with the measured fluid and stop the flow. To calibrate the flow zero point,
press 'enter' when CALIB 0 is diplayed within the test menu and select CALIB Y. After
selection the transmitter will automatically set the flow zero-point after 12 seconds.
- At first commissioning, immerse the sensor in fluid 24hrs before
calibration (only for 1 hour after maintenance).
- Ensure there are no air bubbles in the pipe and the fluid is not moving
before commencing the calibration.
This calibration is only valid for the actual parameters (pipe, fitting and fluid
characteristics) and must be completed before the determination of the K-Factor via the
Teach-In method.
CALIB 0
FLOW
FLOW
8045
TEST MENU
key is pressed when "SPAN " is displayed within the main test
ENTER
0......9
Enter the measured value
ENTER
is pressed when at the 'END'
CALIB N ENTER
ENTER
CALIB Y
MEASURE
12 s
31