Vacuum Instrument Corp.
2099 Ninth Avenue
Ronkonkoma, NY 11779
631.737.0900
D4/Vent Duration:
Vent Duration refers to the amount of time (in
seconds) that the Vent valve will remain open. D4 is adjustable
between 0.1 to 999.9 seconds (the factory default setting is 1.0 second)
allowing the operator to optimize the venting of a particular test object.
D5/Minimum Gross Testing Time:
Sets the minimum amount of time
that the MS-40 will remain in the Gross test mode. Operator adjusts D5 to
prevent unit from auto ranging and crossing over into Reverse flow mode
before a gross leak is detected. Useful when testing large parts that may
have long helium response time. D5 can be set from 0.1 to 999.9 seconds
(the factory default setting is 1.0 second).
D6/Minimum Rough Time:
Specifies minimum amount of time that
MS-40 will remain in Roughing state before crossing over into a testing state.
Useful for testing parts with high gas load which require extended
pumping. D6 can be set from 1.0 to 999.9 seconds (the factory default
setting is 1.0 second).
D7/Reverse Rough Close Delay:
Keeps external rough valve open for
specified amount of time after reverse flow valve has opened. D7 can be
set from 0.1 to 999.9 seconds (if set to 999.9 seconds, external rough
valve will remain open for entire duration of Reverse Flow testing). The
factory default setting for D7 is 1.0 second. D7 is active only on units
equipped with the external rough option.
Changing Delay Settings (D1-D7)
All delay settings may be altered by the operator via the MS-40 User
Panel using the same basic procedure, as follows:
1
On the User Panel, press either SELECT momentary switch
until the green indicator next to the word
Delay
lights (see User
Panel diagram, figure 2-2).
2
The alphanumeric display will show the first delay parameter,
D1
and the currently selected delay interval for D1 (for
example, a display of
D1 0.5 S
indicates that the Fine Crossover
Delay is set to
0.5 seconds
).
3
The delay interval can now be increased or decreased by
pressing the SET keys until the desired setting appears.
1109-186-00 Rev. C
2-30
Содержание MS40
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