Metex 2200C Conductivity Analyzer/Controller - Manual (Page 19)

Model 2200C Page 17
5.12 Range
5.12.1 This menu item is read only, it displays the maximum range of the instrument as
currently configured. You may change the range in the Utility Menu. Refer to
Section 7.3.
5.13 Cell Constant
5.13.1 This menu item is read only, it displays the cell constant required for the range, as it
is currently configured.
6.0 OPERATING HINTS
6.1 Cell Care
6.1.1 Keep the cell clean using the procedure recommended in the cell manual. The
frequency of cleaning depends on the solution being monitored.
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 AquaMetrix.
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