London Electronics Fusion-P, Руководство пользователя

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19
rd HI will appear briefly, followed by a
numeric value, which you can set...
The numeric value will need to be the High
display reading value ...
Set to highest reading value, which was 50
according to the sensor calibration sheet in
our example.
You can change the value of the brightest
digit with the UP or DOWN buttons.
Brighten other digits with the DIGIT button.
Press OK when done...
You can change the position of the decimal point,
relating to rd HI (and rd LO)
This may be useful if you want to increase the
resolution of the display.
The resolution affects several of the display’s
important functions, such as ....
...the resolution of the analogue output signal
...the resolution of your alarm relay action.
...the resolution of the serial data output value.
As an example, assume you have a sensor with 10
tonne capacity.
If you scale the display for 0 to 10, the resolution will
only be 1 part in 10
Your analogue output will change in 10% steps.Your
precision of alarm setting would be to within 1 tonne.
The resolution of serial data would be within 1 tonne.
However, if you include a decimal point you could
control the resolution, as in these examples :-
0-10.0 which gives 1% resolution
0-10.00 which gives 0.1% resolution
0-10.000 which gives 0.01% resolution
You cannot get more resolution than 1 part in 60000.
This is the limit of resolution in the A/D converter.
Note: If you change the decimal point position, you
must reset the rdLO and rdHI values also.
Next .... how to set the theoretical ZERO calibration...
Theoretical cal., no linearisation - page 2
To change decimal point position, press the Set2
button for around 3 seconds while you’re in the rdHI
setup...
Use the UP arrow button to move the decimal point to
your desired position.
Press OK when done.
....Continued from previous page
rd.hi 5000
5.0.0.0.
50.00