16
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
Select the % DO display mode.
Press the 100% TEST key and the display should indicate a value in the
interval between 30% and 200% DO.
Calibration is a very simple 1-point procedure, performed in air.
Ensure the probe is ready for measurements, i.e. the membrane is filled
with electrolyte (see “Probe Preparation” section for details).
Switch the meter on, select the % DO mode and turn the CAL trimmer to
display 100%.
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
site, and the probe should be at the same temperature as the air.
Note:
After replacing the membrane or the electrolyte solution, wait a
few minutes for the reading to stabilize.
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
DIAGNOSTIC TESTS
