Sea-Bird Electronics SBE 38 User Manual download pdf (Page 19)

Section 4: Deploying and Operating RS-232 SBE 38

Recovery

1. Use one of the following sequences to stop sampling:

• Press Enter key to get S> prompt, and then send Stop to stop

sampling continuously. OR

• Remove power.

2. Rinse the SBE 38 with fresh water, and dry thoroughly.

WARNING!

If the SBE 38 stops working while

underwater, is unresponsive to

commands, or shows other signs of

flooding or damage, carefully

secure it away from people until you

have determined that abnormal

internal pressure does not exist or

has been relieved. Pressure housings

may flood under pressure due to dirty

or damaged o-rings, or other failed

seals. When a sealed pressure

housing floods at great depths and is

subsequently raised to the surface,

water may be trapped at the pressure

at which it entered the housing,

presenting a danger if the housing is

opened before relieving the internal

pressure. Instances of such flooding

are rare. However, a housing that

floods at 5000 meters depth holds

an internal pressure of more than

7000 psia, and has the potential to

eject the end cap with lethal force.

A housing that floods at 50 meters

holds an internal pressure of more

then 85 psia; this force could still

cause injury.

If you suspect the SBE 38 is flooded,

point it in a safe direction away from

people, and loosen the bulkhead

connector very slowly, at least 1 turn.

This opens an o-ring seal under the

connector. Look for signs of internal

pressure (hissing or water leak). If

internal pressure is detected, let it

bleed off slowly past the connector

o-ring. Then, you can safely remove

the end cap.

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Sea-Bird Electronics SBE 38 User Manual Page 19

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