Specifications

molbox™ RFM™ OPERATION AND MAINTENANCE MANUAL
© 1998-2007 DH Instruments, a Fluke Company Page 122
SR
Purpose Read the next available ready status.
Syntax “SR”
Remarks The current Ready/Not Ready status can be read directly using
this command. If the reply is "NR" then the flow is Not Ready
within the limits set by the stability settings. If the reply is "R"
then the flow is Ready within the limits. The status is replied
when the next flow measurement is finished.
An "a" will optionally appear as the third character if the molbox
RFM is currently executing an averaging cycle. An "r" will
optionally appear as the third character if the molbloc flow is over
the maximum Reynolds number of 1 200 allowed for a valid
measurement. A “b” will appear if the molbox RFM is busy with a
tare, leak check or purge cycle which does not allow
normal operation.
Example Command:
Reply:
“SR”
“NR”
See Also 3.1.2.4, “FA”, “FR”, “READYCK”, “SS”, “TARESET”, “PURGE”,
“LEAKCK”
SS
Purpose Read or set the flow stability required for a Ready condition to
occur (flow unit/s).
Syntax “SS=stab”
“SS”
Defaults “SS=0.1 sccm”
Arguments stab: The flow stability in flow unit/sec.
Remarks The stability setting determines whether the flow is ready or not
ready. Stability is set in terms of flow. If the rate of change of
flow is greater than the current setting, then the status is Not
Ready.
Example Command:
Reply:
“SS=.2”
“0.20 sccm”
Errors ERR# 6: The stability argument is invalid.
See Also 3.1.2.4 and 3.3.5, “READYCK”, “SR”