Instruction manual

5.8 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 in the left hand position in the controller will assign it to Boiler A. Installing a 4-20mA option

board in the right hand position 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 15 4-20mA (A or B) Menu

A: 2000 S 68° F

4-20mA 12.4mA



4-20mA 12.4mA

Set 4mA Pt 0

4-20mA 12.4mA

Set 20mA Pt 1000

4-20mA 12.4mA

Cal 4-20mA

4mA Output

Cal 4-20mA

20mA Output

4-20mA (A or B)Menu

ENTEREXIT

ENTER

EXIT

ENTER

EXIT

NEXTPREV.

4-20mA menu is only present if

4-20mA hardware is installed.