Sea-Bird Electronics SBE 38 Manual de usuario descargar pdf (Pagina 84)

Manual revision 006 Section 4: Deploying and Operating SBE 19plus V2 SBE 19plus V2

Recovery

Physical Handling

1. Rinse the instrument and conductivity cell with fresh water.

(See Section 5: Routine Maintenance and Calibration for cell cleaning

and storage.)

2. If the batteries are exhausted, new batteries must be installed before the

data can be extracted. Stored data will not be lost as a result of exhaustion

or removal of batteries. (See Section 5: Routine Maintenance and

Calibration for replacement of batteries.)

3. If immediate redeployment is not required, it is best to leave the

19plus V2 with batteries in place and in a quiescent state (QS). Because

the quiescent current required is only 20 microamps, the batteries can be

left in place without significant loss of capacity. If the 19plus V2 is to be

stored for a long time, replace the batteries yearly to prevent battery

leakage (which could damage the 19plus V2).

WARNING!

If the 19plus V2 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 19plus V2 is

flooded, point the 19plus V2 in a safe

direction away from people, and

loosen 1 end cap 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 Manual de usuario Pagina 84

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