25
5.7
4-20mA (A or B) Menu
This menu is only available if the 4-20mA output board is installed in the controller. Installing this option
board on the lower power supply board in the controller will assign it to Boiler A. Installing a 4-20mA
option board on the top front panel assembly assigns the output to Boiler B. See Figure 4.
This menu provides for scaling and calibrating the output. The 4-20mA menu screen appears as follows:
4-20mA 9.20mA
This indicates that the current output of the 4-20mA card is 9.20 mA.
Set 4mA Pt
This conductivity setting will correspond to a 4 mA output from the controller.
Set 20mA Pt
This conductivity setting will correspond to a 20mA output from the controller.
Calibrate
This will provide fixed 4mA and fixed 20mA outputs to allow you to calibrate connected equipment.
Figure 14 4-20mA (A or B) Menu
A: 2000 S 68° F
4-20mA 12.4mA
μ
4-20mA 12.4mA
Set 4mA Pt 0
4-20mA 12.4mA
Set 20mA Pt 1000
4-20mA 12.4mA
Cal 4-20mA
Cal 4-20mA
4mA Output
Cal 4-20mA
20mA Output
4-20mA (A or B)Menu
ENTER
EXIT
ENTER
EXIT
ENTER
EXIT
NEXT
PREV.
4-20mA menu is only present if
4-20mA hardware is installed.
