modification.
3.21 How to adjust the LCD contrast
Use M70 to adjust the LCD contrast. The adjusted results will be stored in the EEPROM so
that the MASTER ERASE (factory default restoration) will make no effect on the contrast.
3.22 How to use the RS232 serial interface
Use M62 for the setup of the RS-232C serial interface.
3.23 How to view the Totalizers
Use M82 to view the daily totalizer, the monthly totalizer and the yearly totalizer.
3.24 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.
In window M72, press ENT key and select YES to reset the working timer.
3.25 How to use the manual totalizer
Use M38 for the manual totalizer setup. Press ENT key to start and stop the totalizer.
3.26 How to check the ESN
Every set of the RH20 series flowmeters utilizes a unique ESN to identify the meter. The ESN
is an 8-digit number that provides the information of version and manufacturing date.
The user can also employ the ESN for instrumentation management.
The ESN is displayed in window M61.
Use M+1 to view the total working time since the instrument was shipped out of the
manufacturer.
Use M+4 to view the total number of times the instrument has been turned on and off since
the instrument was shipped out of the manufacturer.
3.27 How to check the battery life
Use M07 to check how long the battery will last. Also please refer to §2.1 for further details.
3.28 How to charge the built-in battery
Refer to §2.1
3.29 How to calibrate the flowmeter
Refer to website:
h
https://www.noncontactmeters.com/support
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