407510 Datasheet, PDF (6/8 Pages) Extech Instruments Corporation. – Heavy Duty Dissolved Oxygen Meter

Probe Head Replacement
The probe head on the tip of the probe holds a thin Teflon® membrane and an electrolyte
container. Calibration or reading errors could indicate loss of electrolyte or a dirty/damaged
membrane. The membrane is very delicate and can easily be damaged if it comes in contact
with solid objects. Replacement probe heads are available from your local distributor.
Replacement procedure
1. Unscrew the probe head and electrolyte container from the probe handle and discard.
2. Fill the new probe head/electrolyte container with electrolyte.
3. Screw the probe head onto the probe handle. Excess electrolyte may be forced out
through the threads. Wipe clean.
4. Lightly tap the probe to remove any air bubbles.
1. Probe handle
2. Temperature sensor
3. Probe Head
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407510 V7.0 10/06