Dissolved Oxygen Maintenance
R e p l a c i n g t h e M e m b r a n e
If the membrane is damaged, replace it as follows:
1. Follow steps 1–3 under “Changing the Electrolyte
Solution.”
2. Use the plunger to push the steel cylinder and membrane
cartridge out of the cartridge housing (Figure 1).
3. Examine the O-ring (Figure 3) and replace it if it is dam-
aged (See “Replacing the O-ring”).
4. Use the plunger to insert a replacement membrane
cartridge and push it down until it is seated at the end of the
housing that has the O-ring (Figure 2).
5. Follow steps 4–6 of “Changing the Electrolyte
Solution.”
C h a n g i n g t h e E l e c t ro ly t e S o l u t i o n
The electrolyte solution should be replaced and the silver
electrode periodically cleaned to maintain optimal
performance of the probe. Replace the electrolyte solution as
follows:
1. Always hold the probe below the stainless steel band when
unscrewing the cartridge housing or applying torque to the probe.
2. Unscrew the end of the probe and remove the cartridge
housing. Rinse and air dry the cartridge housing.
3. Rinse the electrode with tap water (or deionized water in areas
with hard tap water) and rub it dry with a paper towel. This
removes loose silver oxide (AgO) from the anode.
4. Fill the syringe with 10 ml of probe-filling solution. Avoid air bubbles.
5. Place the tip of the syringe very close to, but not touching the
membrane, and slowly fill the membrane cartridge and cartridge
housing to approximately 5 mm from the top of the housing.
Note: There must be no air bubbles in the housing or cartridge.
Agitate the cartridge housing after filling to dislodge air bubbles.
6. Replace the cartridge housing and dry with a paper towel.
Dissolved Oxygen Maintenance
R e p l a c i n g t h e M e m b r a n e
If the membrane is damaged, replace it as follows:
1. Follow steps 1–3 under “Changing the Electrolyte
Solution.”
2. Use the plunger to push the steel cylinder and membrane
cartridge out of the cartridge housing (Figure 1).
3. Examine the O-ring (Figure 3) and replace it if it is dam-
aged (See “Replacing the O-ring”).
4. Use the plunger to insert a replacement membrane
cartridge and push it down until it is seated at the end of the
housing that has the O-ring (Figure 2).
5. Follow steps 4–6 of “Changing the Electrolyte
Solution.”
C h a n g i n g t h e E l e c t ro ly t e S o l u t i o n
The electrolyte solution should be replaced and the silver
electrode periodically cleaned to maintain optimal
performance of the probe. Replace the electrolyte solution as
follows:
1. Always hold the probe below the stainless steel band when
unscrewing the cartridge housing or applying torque to the probe.
2. Unscrew the end of the probe and remove the cartridge
housing. Rinse and air dry the cartridge housing.
3. Rinse the electrode with tap water (or deionized water in areas
with hard tap water) and rub it dry with a paper towel. This
removes loose silver oxide (AgO) from the anode.
4. Fill the syringe with 10 ml of probe-filling solution. Avoid air bubbles.
5. Place the tip of the syringe very close to, but not touching the
membrane, and slowly fill the membrane cartridge and cartridge
housing to approximately 5 mm from the top of the housing.
Note: There must be no air bubbles in the housing or cartridge.
Agitate the cartridge housing after filling to dislodge air bubbles.
6. Replace the cartridge housing and dry with a paper towel.
012-07688B
012-07688B
