User Guide

Instruction Manual DO 100
12
MEAS
READY
%
°C
ATC
SETUP
MEM
OFF
SETUP
SETUP
SET
ENTER
ENTER
%
°C
ATC
MEAS
READY
ENTER
READY
%
SETUP
CAL
MEAS
To calibrate 0% Saturation:
1. Power on the unit and immerse the DO probe in
0% solution. Ensure that the tip of the probe is
completely immersed. Stir gently to create a
homogenous solution. Wait for the reading to
stabilise. It should be less than 10%.
2. Press SET key once to go to SETUP mode. The
SETUP indicator will appear above the primary
display.
3. Press ENTER key once. The “OFS- P2.0”
screen should appear.
4. Press ENTER key once to enter zero-point
calibration mode. Wait for the reading to
stabilise. If the READY indicator feature is
enabled, it will appear when the reading is
stable (see Ready indicator setup in section
8.1.7.).
5. Press ENTER key once. The meter
automatically calibrates to 0.0% saturation. The
next screen should show “bAr- P2.2”.
6. Press CAL/MEAS key once to exit out of
SETUP mode. The meter is now in
measurement mode and should display 0.0%
value.
NOTE: You can offset your % DO Calibration; see
page 24 for directions.
Figure 9: Calibration for 0.0%
Saturation