™/S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL
© 1995 - 2010 Fluke Corporation, DH Instruments Division
Page 126
LEAKCK(=)
Purpose
Starts a or system leak check cycle or checks if a cycle is complete.
Syntax
“LEAKCK=type”
“LEAKCK”
Arguments
type:
“BOX”. Starts a leak check cycle on the internal
circuit. The molbox must be prepared for the leak check by
setting pressures and venting ports before the leak check is
executed.
“SYS”. Starts a leak check cycle on the system connected to the
. The system must be prepared for the leak check by
setting pressures and operating valves before the leak check is
executed.
Remarks
This command is used to start and monitor the progress of the leak check. Both
“BOX” and the “SYS” leak checks take 60 seconds to complete. At the end of the
leak check, the is returned to its normal operating state.
The “ABORT” command can be used to stop a leak check cycle, clear out any
previous error messages, and return the to its normal operating state.
While the leak check cycle is executing, a ‘b’ (“busy”) will appear in the 3rd
character position of the “FR” and the “SR” command replies.
If the leak check failed, an error will be replied to the “LEAKCK” query until the
“ABORT” command is used to abort the leak check. When the leak check has
completed without an error, the “LEAKCK” query will reply “OK”.
If a molbloc-S is active and a “SYS” type leak check was run, the reply is the
actual average leak rate (in the current pressure units) during the leak check.
The “LEAKCK” command must be completed or aborted using the “ABORT”
command before performing other operations.
Example
Command:
Reply:
“LEAKCK=BOX,1”
“BOX” (starting new leak check cycle including the
microrange RPT)
Command:
Reply:
“LEAKCK=SYS”
“SYS” (starting new system leak check cycle)
Command:
Reply:
“LEAKCK”
“23 sec” A leak check cycle is currently running. This is the
number of seconds remaining in the test.
Reply:
Reply:
“OK”
(The leak check cycle has completed)
“0.3412 kPa/s” if a molbloc-S is active and the “SYS” type leak
check has been completed.
Errors
ERR# 6:
ERR# 15:
ERR# 46:
ERR# 47:
ERR# 48:
ERR# 49:
ERR# 50:
ERR# 51:
One of the arguments is not invalid.
A leak check cycle has not been started.
A large leak exists.
The temperature changed too much to test for a leak.
The absolute RPT disagreement too great to test for a leak.
Possible upstream leak.
Possible downstream leak.
Possible bypass leak.
See Also
3.4.4.3, “ABORT”
LOCAL
Purpose
Enable the front panel controls if in remote and go to local mode.
Syntax
“LOCAL”
Remarks
In LOCAL mode, all front panel operations are available. The LOCAL command
deactivates REMOTE mode.
Example
Command:
Reply:
“LOCAL”
“LOCAL”
See Also
“REMOTE”
MEM
Purpose
Read the memory test status.
Syntax
“MEM”
Remarks
On power up a memory test is run to check the integrity of the internal data NVRAM.
If the memory has been corrupted, "FATAL MEMORY FAULT" will be displayed
on power up to alert the user, and the memory test status command will return a ‘0’.
The command will return a ‘1’ if the memory is OK.
Example
Command:
Reply:
“MEM”
“0”
