Burkert Flowave 8098, Operating Instructions Manual

Page: 273 / 354

273
SAW sensor – Maintenance
Type 8098 FLOWave L
17.14 Setting the offset value of the differentiation factor
Instead of setting the offset value of the DF, you can calibrate it. See chapter 17.15 .
To enter an offset value for the DF, do the following:
→
Go to the
CONFIGURATION
view.
→
SAW sensor
→
Confirm to access the Parameter view.
→
Go to the MAINTENANCE view.
→
Calibration
→
Add. meas. values
→
DF
→
Offset
→
Enter value
→
Set the value of the offset.
→
Save.
The offset value of the DF is set.
17.15 Calibrating the offset value of the differentiation factor
→
Make sure the teach-in conditions are similar to those of the process.
→
To get a correct calibration result, make sure that the following conditions are met during the teach-in
procedure:
• The liquid temperature is stable.
• The liquid that flows through the device does not change. Or the liquid is still and the pipe is full and free
of bubbles.
During the calibration:
• The device status indicator is orange, if the operating mode of the device status indicator is set
to NAMUR (ex-works setting, see chapter 12.4 Changing the operating mode of the device status
indicator or switching off the device status indicator ").
• The NAMUR mode "function check" is active. The outputs react depending on your settings.
Instead of calibrating the offset value of the DF, you can directly set it. See chapter 17.14 .
To calibrate the offset value of the DF, do the following:
→
Make sure the liquid in the pipe is the liquid to be measured.
→
Charge the pipe. To avoid bubbles and air in the pipe, make sure it is full of liquid.
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