CiDRA GVF-100 Gas Volume Fraction Monitoring System - Manual (Page 103)

Copyright © 2006 CiDRA Corporation Page 13-2
20639-01 Rev 03
10. Install a sensor band shorting plug on the sensor band cable. This
should be stored in the transmitter enclosure. Note: Sensor bands
with an “R” in the Part Number suffix (e.g. Part #: 20686-26-R) do
not require a shorting plug.
WARNING
Potential electrical discharge. Always install a sensor band
shorting plug (see item 10 above) on the sensor band connector
whenever the sensor band connector is not installed in a mating
connector.
10. Install spring clamps on both sides of the cover flanges to keep it
from sliding or separating while removing the cover bolts.
11. Remove the boot gasket band if removing a stainless steel cover.
12. Remove the sensor cover bolts, nuts, and washers, and then cover
from pipe.Replace sensor cable access cover.
14. Use a hex driver or Allen wrench to unscrew the nine sensor
screws that hold the two rails of the sensor together. Unscrew
each screw a couple of turns until they are loosened. While the
screw threads are still engaged in the attachment rails a few turns,
spread the sensor rails apart and then continue to loosen the
screws until they are no longer engaged in the threads. (By doing
this, the o-ring that keeps the screws from coming out of the rails
will stay in place.) Use care to keep the fastener assembly intact.
If the spacers or Bellville washers do come off the screw refer to
the sensor band screw figure in the Sensor Installation section of
the manual for proper stack-up of components.
15. Remove the sensor band assembly from the pipe.
16. Slide the screw and washer assembly o-ring down the screw to
retain the screws in their holes.
17. The original packaging as described in Section 6.1 should be used
when storing/transporting the system. If not available, lay the
sensor band in the bottom of the cover and move it to an area
where it will not be damaged.
18. Replace sensor band screws prior to re-installation of sensor band.
19. Inspect and replace fiberglass cover gaskets as required.
20. Inspect and replace stainless steel cover flange gaskets as
required.