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CALIBRA
TION
• Press CAL key to confirm the value (the "SAVE" message appears for a few seconds).
• Press MENU key to exit without saving and return to measurement mode (the "ESC" message is
displayed for a few seconds).
10.2. ORP CALIBRATION (BL101 ONLY)
ORP calibration is a single point process calibration. The value can be set ± 50 mV around
measured ORP.
The probe may be calibrated in an ORP standard prior to installation or it may also be calibrated while
installed in the process by adjusting the value to that of a calibrated hand held probe and meter.
• Place probe tip into beaker of standard.
• Wait for it to equilibrate.
• Follow the ORP process directions below to calibrate with the controller.
• Wash with purified water before handling and installing into pool control piping.
• Dispose of standard safely.
ORP Process Calibration
• Press CAL key to enter calibration mode.
• Press the arrow keys to adjust the process calibration value to the value determined with a hand
held meter and probe. "PROCESS"
message is scrolled on the bottom of the LCD screen.
• Press CAL key to confirm the value (the "SAVE" message is displayed for a few seconds).
• Press MENU key to exit without saving and return to measurement mode (the "ESC" message
appears for a few seconds).
