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Ultrasonic Heatmeter
Operation Manual
31
M22
Zero Settings
When fluid is in the static state, the displayed value
is called "Zero Point". When "Zero Point’ is not at
zero in the flow meter, the difference is going to be
added into the actual flow values and measurement
differences will occur in the flow meter.
Set zero must be carried out after the transducers are
installed and the flow inside the pipe is in the
absolute static state (no liquid movement in the
pipe). Thus, the "Zero Point" resulting from different
pipe mounting locations and parameters can be
eliminated. The measuring accuracy at low flow is
enhanced by doing this and flow offset is eliminated.
Select "YES"; reset "Zero Point" which was set by
the user.
This method is not commonly used. It is only
suitable for experienced operators to set zero under
conditions when it is not preferable to use other
methods. Enter the value manually to add to the
measured value to obtain the actual value. For
example:
Actual measured value
＝
240 m
3
/H
Value Deviation
＝
10 m
3
/H
Flow meter Display
＝
250 m
3
/H
Normally, set the value as "0".
Use “
↑
” and “
↓
” to switch.