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© Valeport Limited
5
CARE AND MAINTENANCE
There are no user serviceable parts within the VA500. The VA500 is remarkably robust,
being primarily constructed of titanium. The only maintenance required, other than periodic
recalibration as necessary, is to keep the sensor as clean as possible.
After use, rinse all parts in fresh water removing any growth or debris as necessary, but take
exceptional care not to touch or damage the pressure diaphragm itself if fitted.
5.1
SUBCONN CARE
The following handling procedures should be adopted when using Subconn connectors:
• The connector should not be exposed to long term heat or sunshine.
• If this occurs, and the connectors are very dry, soak in fresh water before use.
• Ensure the connectors are lubricated - the recommended lubricant is:
Loctite 8021 in a spray can
Molykote 44 Medium - but use very sparingly.
• Any accumulation of sand or mud in the female contact should be removed with
fresh water. Failure to do so could result in the splaying of the female contact and
damage to the O-ring seals.
• When using bulkhead connectors ensure that there are no angular loads as this
destroys the connector.
• When disconnecting, pull straight, not at an angle.
6
WIRING INFORMATION
Wiring colours are correct at the time the manual was printed. However, it is advised that
continuity checks are performed prior to all terminations.
6.1
INSTRUMENT CONNECTOR
Subconn MCBH10F
1
2
3
4
5
6
7
8
9
10
VA500 Altimeter Manual
or
Function
Power Ground
Power +V
Analogue +Ve
Analogue -Ve
Enable 485
Link to Pin 9 for RS485.
N/C for RS232
TTL trigger +Ve
RS232 Tx (To PC)
/RS485A
RS232 Rx (From PC)
/RS485B
RS232 Ground
TTL Trigger -Ve
Page 16
0430831e_VA500_Altimeter_Manual
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