Metex 2200C Conductivity Analyzer/Controller - Manual (Page 8)

Model 2200C Page 6
3.5.2 The test resistor R68, is used for the simulation feature. It has a resistance equal to
the equivalent resistance of the cell at mid scale. The resistor that is shipped with
the unit corresponds to the mid scale of the range ordered. If the range is changed,
from the range configured at the factory. Refer to Sec. 9.1.5 for the correct resistor
value.
4.0 Description of Functions