Aquametrix 2200C Conductivity Controller User Manual - Manual (Page 18)

6.1.2 Be sure the cell cable is well protected. The cell cable should run in conduit but
never in the same conduit with line power. Excess cable should be cut off and
never coiled.
6.2 Calibration
6.2.1 The system will only be as accurate as your calibration technique. With a clean cell
you will need to calibrate only with a change in conditions or after installing a new
cell.
6.2.2 Be sure of the value of your calibration solution. Conductivity solutions are
available from Water Analytics.
6.3 Reset
6.3.1 The instrument can be reset without losing calibration or any of the stored values by
pressing and releasing the S9 reset button (located at the bottom of the board near
the center) This action is equivalent to turning the power off and on.
6.4 Ground Loop Errors
6.4.1 If there is a conductive pathway from the sensor connections to earth, ground loop
errors will occur. To avoid this condition keep all terminal connections in the
instrument or in a junction box dry and free of corrosion.
6.5 Output Hold
6.5.1 It may be useful during some system maintenance procedures to place the relay
and analog outputs on hold. To accomplish this simply press CALL. To return to on
line operation press RUN. (If the instrument is in TEST the outputs will not be in
HOLD if the arrow buttons are touched.)
NOTE: To safeguard against the operator forgetting to press RUN the instrument
will automatically go back on line ten minutes after the last button was
pressed provided this feature has been enabled by placing DIP switch No.7
in the ON position.
7.0 UTILITY MENU
7.1 Utility Menu Functions
7.1.1 The Utility Menu enables authorized personnel to perform the following:
• Change the range
• Adjust the temperature output range
• Adjust the offset and span of the 0-1 mA/ 0-5 Vdc output