Tro u b l e s h o o t i n g
If the Dissolved Oxygen Sensor does not give the
expected output, perform the three maintenance
procedures described on this card, checking sensor
operation after each procedure:
1. “Changing the Electrolyte Solution”
2. “Replacing the Membrane”
3. “Replacing the O-ring”
If the Dissolved Oxygen Sensor still does not function
properly, contact PASCO Technical Support.
S t o r a g e
Short-Term Storage (two weeks or less)
1. Store the probe in the plastic zip-lock bag with the tip inserted
in the soaker bottle containing about 10 ml of deionized water.
Long-Term Storage (more than two weeks)
1. Repeat steps 1–3 under “Changing the Electrolyte Solution.”
2. Rinse the soaker bottle with tap water and shake dry.
3. Replace the cartridge housing, and store the probe dry in the
zip-lock bag with the end of the probe in the soaker bottle to
protect the membrane from trauma.
R e p l a c i n g t h e O - r i n g
The O-ring rarely requires replacing. However, if it develops
nicks and splits or leaks electrolyte solution from the probe,
replace it as follows:
1. Follow steps 1–2 under “Replacing the Membrane.”
2. After removing the membrane cartridge, remove the O-ring
with a pair of fine-tipped tweezers and insert a new O-ring.
3. Reassemble the unit as directed in steps 4–7 of
“
Changing
the Electrolyte Solution.”
Tro u b l e s h o o t i n g
If the Dissolved Oxygen Sensor does not give the
expected output, perform the three maintenance
procedures described on this card, checking sensor
operation after each procedure:
1. “Changing the Electrolyte Solution”
2. “Replacing the Membrane”
3. “Replacing the O-ring”
If the Dissolved Oxygen Sensor still does not function
properly, contact PASCO Technical Support.
S t o r a g e
Short-Term Storage (two weeks or less)
1. Store the probe in the plastic zip-lock bag with the tip inserted
in the soaker bottle containing about 10 ml of deionized water.
Long-Term Storage (more than two weeks)
1. Repeat steps 1–3 under “Changing the Electrolyte Solution.”
2. Rinse the soaker bottle with tap water and shake dry.
3. Replace the cartridge housing, and store the probe dry in the
zip-lock bag with the end of the probe in the soaker bottle to
protect the membrane from trauma.
R e p l a c i n g t h e O - r i n g
The O-ring rarely requires replacing. However, if it develops
nicks and splits or leaks electrolyte solution from the probe,
replace it as follows:
1. Follow steps 1–2 under “Replacing the Membrane.”
2. After removing the membrane cartridge, remove the O-ring
with a pair of fine-tipped tweezers and insert a new O-ring.
3. Reassemble the unit as directed in steps 4–7 of
“
Changing
the Electrolyte Solution.”
