TM8400B-L-00
1 November 2004
Step 5. Allow conductivity cell to refill and sample water flow to continue then set
FUNCTION switch to READ.
Step 6. Adjust SUPPRESSION switch to get a stable non-flashing display. A
negative sign in a flashing display indicates that the conductivity signal is out
of range in the negative direction and the suppression value should be
decreased. A positive sign in a flashing display indicates a positive overrange
and the suppression value should be increased. A stable display with a
positive sign gives a direct reading of 2 X the conductivity ratio value.
(a) Set function switch to STANDBY;
(b) Remove sample bottle;
(c) Wipe pick-up tube;
(d) Flush conductivity cell; and
(e) Switch off pumps.
Step 7. Proceed with next sample by repeating procedure from Step 1, or proceed as
follows if leaving instrument to idle for more than a few hours or shutting-
down:
(a) Install bottle of distilled water in place of sample bottle;
(b) Turn pumps on and flush approximately 400 ml through conductivity
cell until readout, with READ selected and SUPPRESSION switch
set to 0.0 is less than 0 050;
(c) Turn pumps off, leaving distilled water in conductivity cell, and return
FUNCTION setting to STANDBY; or
(d) Flush cell completely and drain tank via tank DRAIN/FILL valve if
storing instrument.
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