4
DO (Dissolved Oxygen) CALIBRATION:
Protective cap
Electrode type
ntc 10K (Default)
ntc 30K
not
Plug in
Temp. XX.X
Temp. XX.X
Manual temp.
Un-plugged
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ATC icon
O
O
X
Calibration is necessary before measurement, please refer to the following calibration procedures:
A) Required Equipment:
1) DO electrode.
2) Sodium sulfite (Na2SO3) solution (For 0% DO calibration used).
3) Mini motor / pump in water or air bubbler or magnetic stirrer platform (For 100% Air-Saturated Water Calibration
used).
B) DO electrode installation:
NOTE: DO NOT
touch the sensitive membrane when using the electrode or replacing the membrane cap,
for the sweat and grease will affect the quality of membrane and decrease the rate of oxygen permeability.
1) Remove protective cap from DO sensor head.
2) Loose the membrane cap and remove it.
NOTE: We will provide 1 pc membrane cap with membrane (pic.1), if you are first time to use the membrane cap,
please skip step 2) and follow step 7) to filling in DO electrolyte solution. If you want to change membrane, please
loose the membrane cap and remove it as pic. 2. Then follow step 3) to clean the membrane cap.
Pic. 1
Pic.2
“ATC” ICON INDICATION
