PureAire Monitoring Systems, Inc.
38
5.4 Electrolyte Replacement (For Renewable Methyl iodide sensor)
CAUTION:
Always wear protective gloves and safety glasses when replacing sensor electrolyte. Be
sure to adhere to your facility’s chemical handling guidelines and procedures.
1.
Remove the sensor as outlined in section 6.1.1.
2.
Place your finger over the pressure compensation port and turn the sensor upside down. Remove
the box nut membrane, retainer ring, O-ring and silicon sheet (depending on sensor model).
BOX NUT
RETAINER RING
MEMBRANE
O-RING
SILICON SHEET
PRESSURE COOMPENSATION
PORT
3.
Place the sensor over the beaker as shown and pour the old electrolyte into the beaker. Some will
remain in the sensor until the pressure compensation plug is removed. Remove the plug to
release the electrolyte into the beaker.
PRESSURE COMPENSATION
SCREW
BEAKER
4.
Hold the sensor in your hand with the sensing electrode up. Hold a piece of paper tissue over the
pressure compensation port with your thumb. Pour 10 cc’s of fresh electrolyte into the sensor
and rinse. Discard into the beaker.
SENCING ELECTRODE
PRESSURE COMPENSATION
SCREW
ELECTROLYTE
BOTTLE
SENSING ELECTRODE
NOTE:
The Pressure
Compensation Plug
has a Teflon
membrane fixed to
the inside of the
screw.
Never remove
this membrane.
CH
3
I sensor cell uses a
White O-ring,
p/n 1516-12W and
Silicon Sheet is
p/n SC2000
NOTE: Replace O-ring
and Silicon sheet only if
damaged
Electrolyte
p/n EL-4460-1
