FDT-25W Wall Mounter Ultrasonic Flowmeter
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(3) Enter flow rate lower limit 600 in M75
(4) Enter flow rate lower limit 1000 in M76
(5) Select item '6. Alarm #1' in M78
(6) Select item '6. Alarm #1' in M79.
4.18 How to use the built-in Buzzer
The built-in buzzer is user-configurable. It can be used as an alarm. Use M77 for setups.
4.19 How to use the OCT output
The OCT output is user-configurable, which can be performed by selecting the proper input source
such as pulse output. Use M78 for the setups.
Please make sure that the Frequency Output shares the OCT.
The OCT output shares pins with the RS-232C interface, and the terminal is at Pin 1 and 8
4.20 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.
4.21 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.
4.22 How to use the Working Timer
Use the working timer to check the time that has passed with a certain kind of operation. For example,
use it as a timer to show how long a fully-charged battery will last.
Under M72, press ENT key and then select YES to reset the timer.
4.23 How to use the manual totalizer