Thermo Fisher Scientific EcoScan DO 6 - Manual (Page 55)

Instruction Manual DO 6
47
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 ▲ and ▼
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
Figure 27: % Saturation Offset
Adjustment
%
HOLD
ENTER
Measured reading based on last
percentage saturation calibration
is displayed momentarily
%
%
HOLD
ENTER
Last offset adjusted
value will be displayed
Display will return to “OFS.6” subgroup menu
“CO” will display for
1.5 seconds