9
1500 - INSTRUMENT PERFORMANCE CHECK
Perform this procedure at specifi ed intervals to verify instrument performance.
NOTE: Store standards in a cool place out of direct light. Exposure to excessive heat
or light may cause degradation of the standards.
Wipe the DPD Chlorine Color Standard
Blank (4136-E) with a clean, lint-free cloth.
Insert the DPD
Chlorine Color
Standard Blank into
the chamber, being
sure to align the
index line with the
arrow on the meter.
Close the lid.
Insert DPD
Chlorine Color
Standard A into
the chamber,
being sure to align
the index line
with the arrow on
the meter. Close
the lid.
If the readings are not within the
tolerance limits, standardize the
meter calibration by following the
Calibration Procedure in the meter
manual. If the readings are still
not within the tolerance limits, the
standards are no longer valid and
should be replaced.
Press
to turn the meter on. Press
ENTER
to select Testing Menu. Press
ENTER
to select All Tests Menu. Press
ENTER
to select All Tests. Scroll to and
select Chlorine TT or Chlorine Liq
DPD. Select Scan Blank.
Wipe the DPD Chlorine Color Standard
Blank (4136-E) with a clean, lint-free cloth.
Select Scan Sample.
The concentration will be
displayed.
Chlorine TT
Scan Blank
Scan Sample
12:00:00 001/500
Repeat steps 4-6 with DPD
Chlorine Color Standard B
(4138-E) and DPD Chlorine
Color Standard C (4139-E).
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Summary of Contents for 4140-03
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