Product Manual
Wall Mounted Ultrasonic Flowmeter---User Manual
35
M03>>M04>>M05>>M06>>M07>>M08>>M90>>M91>>M92>> M93>> M94>>M95. This
function allows the user to visit all the important information without any manual action.
To stop this function, simply press a key. Or switch to a window other than M95.
6.23 How to do the linearity correcting? How to enter into the data?
When the product leaved the factory, the function is closed.
The menu can realize almost 12 parts linearity correcting. The user can choose from two points to
twelve points to execute the linearity correcting according to user actual condition.
In order to explain the usage method of the menu, we suppose that we get the following table data
through calibration the meter.
Reference standard
equipment flow (m
3
/h)
Instrumented show flow
(m
3
/h)
Correction coefficient
(standard / show value)
1.02 0.0998 1.02
5.11 5.505 0.93
10.34 10.85 0.95
20.45 19.78 1.03
50.56 51.23 0.99
In order to revised the flow exceed the scope of the above table, without mutations of correction factor,
we add two points on the basis of the above five points, (0 m
3
/h, 1.0) and (100000 m
3
/h, 1.0). (0 m
3
/h,
1.0) is called the minimum flow of the amendment point, this set of data is used to facilitate to
generated a appropriate correction factor when Instrumented show flow under 1.02 m
3
/h. (100000 m
3
/h,
1.0) is called the maximum flow of the amendment point, this set of data is used to facilitate to
generated a appropriate correction factor when Instrumented show flow above 50.56 m
3
/h. So that we
get the following data sets from small to large.
( 0 , 1 )
( 0.0998 , 1.02 )
( 5.505 , 0.93 )
( 10.85 , 0.95 )
( 19.78 , 1.03 )
( 51.23 , 0.99 )
( 100000 , 1. )
The total is seven sets of data. The next step is to put seven sets of data entered into the Instrument.
Pay attention to the input order in accordance with from small to large.
To enter the menu M48, then input the data set number “7”, to be followed in the above seven sets of
data, we revised the setup of a multi-segment linearity correcting.
If you need to cancel linearity correcting, simply enter “0” in the menu M48.
Decommissioned
linearity correcting, you just need to enter in the menu M48 data points (in this
example, it is “7”).