Manual revision 041
Section 5: Routine Maintenance and Calibration
SBE 37-SM RS-232
65
Replacing Anti-Foulant Devices (SBE 37-SI, SM, IM)
The MicroCAT has an anti-foulant device cup and cap on each end of the cell.
New MicroCATs are shipped with an Anti-Foulant Device and a protective
plug pre-installed in each cup.
Wearing rubber or latex gloves
, follow this procedure to replace each Anti-
Foulant Device (two):
1.
Remove the protective plug from the anti-foulant device cup;
2.
Unscrew the cap with a
5
/
8
-inch socket wrench;
3.
Remove the old Anti-Foulant Device. If the old device is difficult
to remove:
Use needle-nose pliers and carefully break up material;
If necessary, remove the guard to provide easier access.
Place the new Anti-Foulant Device in the cup;
4.
Rethread the cap onto the cup. Do not over tighten;
5.
If the MicroCAT is to be stored, reinstall the protective plug.
Note that
the plugs must be removed prior to deployment or pressurization.
If the plugs are left in place during deployment, the cell will not
register conductivity. If left in place during pressurization, the cell
may be destroyed.
WARNING!
AF24173 Anti-Foulant Devices
contain bis(tributyltin) oxide.
Handle the devices only with
rubber or latex gloves. Wear eye
protection. Wash with soap and
water after handling.
Read precautionary information on
product label (see Appendix IV)
before proceeding.
It is a violation of US Federal Law
to use this product in a manner
inconsistent with its labeling.
CAUTION:
Anti-foulant device cups are attached to the
guard and connected with tubing to the cell
.
Removing the guard without
disconnecting the cups from the guard
will break the cell.
If the guard must be
removed:
1. Remove the two screws connecting
each anti-foulant device cup to the
guard.
2. Remove the four Phillips-head screws
connecting the guard to the housing
and sensor end cap.
3. Gently lift the guard away.
Cup
Cap
Cup
Plug
Cap
AF24173
Anti-Foulant
Device