Calibration Procedure; Diagnostic Tests - Hanna HI8410 Instruction Manual

Dissolved oxygen dissolved oxygen process controller rocess controller
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Calibration is a very simple 1-point procedure, performed in air, only in
% DO range.
Ensure the probe is ready for measurements, i.e. the membrane is filled
with electrolyte (see "Probe Preparation" section for details).
If the instrument is set on the % DO range (the mg/L range selection switch
on the rear panel is open) simply turn the CAL trimmer to display 100%.
If the instrument is set on the mg/L range press and hold down the CAL
key to enter % DO range and turn the CAL trimmer to display 100%. After
CAL key is released the instrument returns to mg/L range.
If the environmental relative humidity is lower than
30%, pour some deionized water (approx. 3 mm) in
the white cap supplied with the membrane. Insert the
probe in the cap and calibrate.
Keep the probe in vertical position to avoid any contact
of the membrane with the water.
Note: For best accuracy, calibration should be performed on the measurement
Note: After replacing the membrane or the electrolyte solution, wait a
The HI 8410 controllers are designed with built-in diagnostic functions to
enable the user to check and troubleshoot the instrument. The checks
performed are through the front panel keys and can be used to isolate the
cause of malfunction.
Press the "MEASURE" key before proceeding
with the following tests.
100% Test
Press and hold the CAL key and then press the 100% TEST key, the display
should indicate a value in the interval between 30% and 200% DO.
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CALIBRATION PROCEDURE

CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
site, and the probe should be at the same temperature as the air.
few minutes for the reading to stabilize.

DIAGNOSTIC TESTS

DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
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