Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 71)

69
System Setup
6.6 Adjust mA output
6.7 Factory settings
Select the ADJUST mA OUTPUT option to access the
analyzer’s analog output parameters. These can be set to
0-20 mA or 4-20 mA (see details on how this is done in
mA
outputs on page 80 ).
Each mA output can be individually calibrated on 2 points.
Adjustments should be made based on accurate readings
from a multimeter.
You have the option to adjust any of the six available outputs.
The process is exactly the same for each of the outputs.
Select the mA output you wish to change to display the next
screen.
Ensure the multimeter is connected to the selected output.
The option to increase or decrease the low end value (0 mA
or 4 mA depending on your setting) is displayed.
Change the value up or down by selecting the Minus or Plus
indicators at the bottom of the screen.
On completion press the Enter function key and the display
changes to 20 mA.
Enter the adjustment value in the same way as for the low
end value. On completion press the Enter function key, and
the display reverts back to the main ADJUST mA OUTPUT
screen, to allow you to select the next output to adjust.
This option is reserved for qualified Hach Lange service
personnel.
If you believe that changes to the settings may be required,
please contact your local Hach Lange representative.