Changing The Protective Membrane - Cygnus 1 Ex Manual

Changing the Protective Membrane

1. Unscrew the Knurled Ring from the end of
the Probe.
2. Use the Membrane Key to unscrew the
Locking Ring from inside the Knurled
Ring. The old membrane can then be
removed and discarded.
3. Place a new membrane into the end of
the Knurled Ring ensuring it locates in the
groove.
4. Screw the Locking Ring back inside the
Knurled Ring and tighten with the
Membrane Key.
5. Place a few drops of Membrane Couplant
on to the probe face.
6. Screw the Knurled Ring back onto the
probe. Use your thumb to squeeze the
couplant from under the membrane as
you tighten the Knurled Ring down.
7. You should see the membrane has a very
thin film of couplant between itself and
the probe face with no air bubbles.
Cygnus 1 Ex Operating Manual
Page 27 of 91