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46 of 66 Maintenance and Troubleshooting - 3654 Portable H2/N2 Analyzer
Operator Manual
ORBISPHERE
To mount a single membrane:
• Take a few membranes out of the storage box.
• Using tweezers included in the kit, pick up one
membrane from the stack, and gently place it on
the sensor tip.
• Make sure it is centered.
To mount dual membranes:
• Remove one 29562A secondary membrane along
with one piece of the separation paper from its box.
Place the membrane and paper, paper side down,
on a clean flat surface.
• Remove a primary membrane along with its
separation paper.
• With the separation paper on top of the primary
membrane place the primary membrane directly
over the secondary membrane, taking care to
center the two membranes.
• Rub your finger on the paper of the primary
membrane to remove any air bubbles between the
membranes. The two membranes should now be
sandwiched together and appear as one
membrane.
• Pickup the sandwiched membranes with tweezers
and remove the separation paper.
• Gently place them on the sensor tip ensuring the
secondary membrane (29562A) is on the bottom.
• Make sure they are centered.
Note:
Distinguish the membrane from the protection paper:
- Membrane is transparent (translucent).
- Protection paper is opaque.
The membrane diameter is larger than the sensor head
diameter. This is normal, as the membrane will fold over
the sensor tip.
The membrane holding ring comes in two slightly different
internal diameters, depending on the membrane(s) total
thickness.
For a correct membrane installation, be sure to use the
correct holding ring for the application.
If mounting dual membranes, always use mounting ring
part number 29229.