Manual revision 041
Section 5: Routine Maintenance and Calibration
SBE 37-SM RS-232
60
Section 5: Routine Maintenance
and Calibration
This section reviews corrosion precautions, connector mating and
maintenance, conductivity cell cleaning and storage, pressure sensor
maintenance, O-ring maintenance, plastic housing handling instructions,
replacement of AA cells, replacement of AF24173 Anti-Foulant Devices, and
sensor calibration. The accuracy of the MicroCAT is sustained by the care and
calibration of the sensors and by establishing proper handling practices.
Corrosion Precautions
Rinse the MicroCAT with fresh water after use and prior to storage. All
exposed metal is titanium; other materials are plastic. No corrosion
precautions are required, but direct electrical connection of the MicroCAT
housing to mooring or other dissimilar metal hardware should be avoided.
Connector Mating and Maintenance
Clean and inspect the connectors, cable, and dummy plug before every
deployment and as part of your yearly equipment maintenance. Inspect
connectors that are unmated for signs of corrosion product around the pins,
and for cuts, nicks or other flaws that may compromise the seal.
When remating:
1.
Lightly lubricate the inside of the dummy plug/cable connector with
silicone grease (DC-4 or equivalent).
2.
XSG Connector
- Install the plug/cable connector, aligning the raised
bump on the side of the plug/cable connector with the large pin
(pin 1 - ground) on the MicroCAT. Remove any trapped air by
burping
or
gently squeezing the plug/connector near the top and moving your fingers
toward the end cap.
OR
MCBH Connector
– Install the plug/cable connector, aligning the pins.
3.
Place the locking sleeve over the plug/cable connector. Tighten the
locking sleeve finger tight only.
Do not overtighten the locking sleeve
and do not use a wrench or pliers.
Verify that a cable or dummy plug is installed on the MicroCAT
before deployment.
CAUTIONS:
Do not use WD-40
or other
petroleum-based lubricants, as
they will damage the connectors.
For wet-pluggable MCBH
connectors:
Silicone lubricants
in a spray can
may contain
ketones, esters, ethers, alcohols,
or glycols in their propellant.
Do
not use these sprays, as they
will damage the connector.
Note:
See
Application Note 57: Connector
Care and Cable Installation
.
Locking sleeve
I/O cable