Specifications

molbox™ RFM™ OPERATION AND MAINTENANCE MANUAL
© 1998-2007 DH Instruments, a Fluke Company Page 128
VER
Purpose Read the molbox RFM version.
Syntax “VER”
Remarks The software version of the molbox RFM can be read. This is
useful for checking for the presence of the molbox RFM and for
reference purposes.
Example Command:
Reply:
“VER”
“DH INSTRUMENTS, INC RFM Ver1.00”
VLM(=)
Purpose Read or set the volume flow unit of measure pressure
temperature conditions.
Syntax “VLM=pres(,temp)”
“VLM”
Defaults
“VLM=101.325 kPaa, 20°C”
Arguments pres: The user defined pressure in the current pressure
unit.
Temp: The user defined temperature in the current
temperature unit. If this field is omitted, and just
the pressure is given, then the molbloc
temperature will be used as temperature.
Remarks The flow volume units "ccm", "lm", "lh", "m3m", "m3h", "cfm" and
"cfh" require pressure and a temperature conditions to be
specified by the user.
Example Command:
Reply:
“VLM=200”
“200.00 kPaa” (molbloc temp will be used)
Command:
Reply:
“VLM=200, 15”
“200.00 kPaa, 15°C” (user defined temp will be
used)
Errors ERR# 6: One of the arguments is invalid.
See Also 3.2.3, 3.2.3.1, and 3.2.3.4, “FUNIT”
ZOFFSET:HI(=) and ZOFFSET:LO(=)
Purpose Read or set the AutoZ pressure offset (P
offset
) for the high (“HI”) or low
(“LO”) absolute RPT .
Command:
Query:
“ZOFFSET:HI =offset”
“ZOFFSET:LO =offset”
“ZOFFSET:HI”
“ZOFFSET:LO”
Defaults “ZOFFSET:HI = 0.0”
“ZOFFSET:LO = 0.0”
Arguments offset: The RPT pressure offset (“Poffset”) in Pa.
Remarks The pressure offset (P
offset
) for the specified RPT (HI or Lo) can be
accessed with this command. Using this program message overwrites the
current offset, so caution must be used. Changes made using this program
message take effect immediately.
Example Sent:
Reply:
“ZOFFSET:LO=2.1”
“ 2.10 Pa”
Errors ERR# 6: One of the arguments is out of range.
See Also 3.4.4.4, “AUTOZERO” command