72-910-02
REV. P
14
Both Limit Timers will reset if the conductivity reading changes to above or below
the set point and differential.
5. Sensor Calibration
The controller is factory calibrated and requires no user adjustments. Some deviation in the reading
may be expected when compared to a hand-held tester. However, if you wish to perform a
calibration, follow this procedure:
1. Place the probe in the process that it will normally be installed in and allow flow across the
probe for approximately 15 minutes. This will allow the probe temperature to equalize.
2. While the “uS” LED is steady press and hold the “m” mode button for five seconds until the
controller flashes “Cal”. Release the “m” button.
1. The controller will now display the actual conductivity reading from the probe. Use the up
and down buttons to change the reading until it matches your hand-held’s reading. If you
press and hold the up or down buttons, the displayed value will change very quickly.
4. When finished press the “m” button once.
IMPORTANT! For optimum performance, make sure that the system conductivity is near
the set point that you intend to operate the system.
The calibration process is now complete.
6. Factory Default Values
Set point: 1500µS/cm
Bleed Limit timer: 00:00, HH:MM
Feed Limit timer: 00:00, HH:MM
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