18
CALIBRATE - With a clean probe inline with the
hand-held tester) value. Note: Never enter 0.
RESET ZERO - With the probe out of solution and dry
enter a new zero point. Note: Probe must be dry!
NOTE: In the calibration pop-up window the raw analog to digital (A/D) value will be displayed. A new
calibration value should only be entered when the probe is sensing a stable A/D value. If the system is a
boiler the associated relay can be forced on in the pop-up to allow for a fresh hot sample. Boiler probes should
have fresh hot water blown past them for a minimum of 2 minutes before calibrating. The A/D reading has a
range of 0 to 32,767. If it is at one end of the range or the other when trying to calibrate something is
wrong with the probe or wire run.
3.2 pH and ORP Calibration
1 POINT
water enter the known (tested from a calibrated hand-
held tester) value.
2 POINT - Enter a known Low value with a clean probe
Notes:
3.3 4-20mA Output Calibration
4-20mA outputs can be calibrated to ensure that the
output generated by the controller and received by the
external device match. With a volt meter connected
across the out and return wires (see page 7) of the
4-20mA output channel to be calibrated go into the
The number displayed in the Calibration dialog box can
range from 0-4095 with 800 equal to 0 mA output and
4030 equal to 20 mA. This number range of 0-4095 is
the raw digital to analog (D/A) values and is strictly used
for a reference. The D/A numbers you get will vary based
on your installation conditions.
While in the High or Low calibration pop-up screen use
the up and down arrows to change the output value
being read with the volt meter. Adjust the High value
for the 20-mA reading and the Low value for the 4 mA
value.
3.4 4-20mA Input Calibration
>SYSTEM 1 COND CALIBRATION<
CALIBRATE Cal Factor 1.10
RESET ZERO
>SYSTEM 1 pH CALIBRATION<
1 POINT CAL
2 POINT CAL
>CURRENT LOOP CALIBRATION<
OUTPUT 1
OUTPUT 2
>mA OUTPUT 1 CALIBRATION<
HIGH 4030
LOW 800
>mA OUTPUT 1 CALIBRATION<
OUTPUT 1 CAL HIGH
4000
Use Up/Down arrows to change
Use Enter to save value
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