17
2.6. Calibration
Calibration is for adjusting the displayed value of a probes reading to match your tester or known solution.
3LFNWKHV\VWHPRUP$LQSXW¿UVW)URPDSDUWLFXODUV\VWHPSLFNWKHSUREHWRFDOLEUDWH
CALIBRATION
- For adjusting the actual reading
values of the available analog probe inputs, such as
conductivity, pH, ORP or temperature.
2.6.a. Conductivity Calibration
CALIBRATE
- With a clean probe on-line seeing the
V\VWHP¶VZDWHUHQWHUWKHNQRZQWHVWHGIURPDFDOLEUDWHG
hand held tester) value.
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.
2.6.b. pH and ORP Calibration
1 POINT
:LWKDFOHDQSUREHRQOLQHVHHLQJWKHV\VWHP¶V
water enter the known (tested from a calibrated hand
held tester) value.
2 POINT
- Enter a known Low value with a clean probe
LQ D EXႇHU VROXWLRQ 7KHQ HQWHU D NQRZQ +LJK YDOXH
ZLWKWKHFOHDQSUREHLQDEXႇHU
Notes:
3UREHVPXVWEHULQVHGEHWZHHQEXႇHUVZKHQGRLQJD3RLQWFDOLEUDWLRQDQGJLYHQDWOHDVW
VHFRQGVLQVROXWLRQWRDGMXVWWRWKHEXႇHU
7KHUHPXVWEHDWOHDSRLQWVEHWZHHQEXႇHUVROXWLRQV8VLQJDEXႇHURIDQGLV
WKHEHVWSURFHGXUH253EXႇHUVVKRXOGEHDWOHDVWSRLQWVDSDUW
