Product Manual

Wall Mounted Ultrasonic Flowmeter---User Manual
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6.11 How to setup a zero point
There exists a ‘Zero Point’ with certain installation which means the flow meter will display a non-zero
value when the flow is absolutely stopped. In this case, setting a zero point with the function in window
M42 will bring a more accurate measurement result.
Make sure that there is no liquid running inside the pipe, and then run the function in window M42 by
pressing the ENT key.
6.12 How to get a scale factor for calibration
A scale factor is the ratio between the ‘actual flow rate’ and the indicated value by the flow meter.
It can be determined by calibration with standard flow calibration equipment. You may change the scale
factor in menu window M45.
The scale factor can be determined by calibration with flow calibration equipment.
6.13 How to use the system locker
The system locker provides a means of preventing inadvertent configuration changes or totalizer
resets.
When the system is locked, menu window browsing can be done without affecting any change, but any
modifications are prohibited.
The system can be locked without a password or with a 1 to 4 digit password. With a no-password
locking, directly press the ENT key in M47
If the password is forgotten, please contact the factory.
6.14 How to modify the built-in calendar
No modification on the built-in calendar will be needed in most cases. The calendar runs on
insignificant amount of power supply. Modification will be required only in such cases as when the
battery is totally consumed, or when the changing of the battery takes a long time.
Press the ENT key under M60 for Modification. Use the dot key to skip over these digits that need no
modification.
If use data logger or system updating or network communication, it should ensure the calendar is
proper.
6.15 How to view the Date Totalizers
Use M82 to view the date totalizers that are comprised of a daily totalizer, a monthly totalizer and a
yearly totalizer.