65
13 Eliminating faults and malfunctions
13.1.3 Reference measuring instrument test
Immerse in test
solution
Test
sequence
✱
Prepare the conductivity test solution in a container of adequate size.
✱
Wire up the device, see Chapter 7 "Installation", Page 25.
✱
Select the range appropriate to the conductivity test solution, see Chapter
10.6.1 "CONDUCTIVITY IN (Conductivity input)", Page 37 -> RANGE 1 — 4
✱
Set TC to 0%/°C, see Chapter 10.6.1 "CONDUCTIVITY IN (Conductivity
input)", Page 37 -> TEMPCO
✱
Set the TC for the reference instrument to 0%/°C as well (see operating
instructions for the reference instrument). If this is not possible, then the
sample liquid must be tempered to the reference temperature for the
reference instrument.
✱
Immerse the cell under test and the cell for the reference instrument in the
container, and do not move them any more during the measurement.
✱
The output and display of the device under test or the attached indicator
must match the indication of the reference instrument, taking into account
acceptable device deviations.
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