LaMotte DO 6 Dissolved Oxygen Meter - Manual (Page 37)

7.7 (OFS.6) % Saturation Offset Adjustment
This is a useful feature that allows you
to offset meter’s value when cross
referenced with another DO meter.
That way, it can be standardized
without you having to perform manual
calculation. Your DO 6 meter allows %
Saturation Offset adjustment within +/-
10.0% offset and its adjusted offset
value can be viewed in the Electrode
Properties menu “ELE.3”.
From the % Saturation measurement
mode,
1. Dip the DO electrode in the sample
solution and allow the reading to
stabilize.
2. Check the reading of another DO
meter being used as a reference.
This reference meter should have its
probe immersed in the same sample
solution and at the same depth.
3. Switch off your meter and enter the
% Saturation Set Up menu.
4. Scroll the Set Up main group menu
by using the
p and q keys until
the meter displays the % Saturation
Offset Adjustment menu “OFS.6”.
5. Press the HOLD/ENTER key to
enter the menu. The display will
momentarily show the measured
reading based on the last calibration
before displaying the last offset
adjusted value.
6. Use the
p and q keys to enter the new value.
7. Press the HOLD/ENTER key to confirm the offset adjustment. “CO” will
be displayed for 1.5 seconds before the display returns to the subgroup
menu.
8. Press CAL key to exit the Set UP menu to return to the measurement
mode.
Note: When a user calibration is done, the offset gets reset to zero.
36
HOLD
ENTER
HOLD
ENTER
Figure 27: % Saturation Offset
Adjustment
Measured reading based on last
percentage saturation calibration
is displayed momentarily
HOLD
ENTER
“CO” will display for
1.5 seconds
Display will return to “OFS.6” subgroup menu
%
%
%