™/S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL
© 1995 - 2010 Fluke Corporation, DH Instruments Division
Page 128
MOLBLOC
Purpose
Read the active molbloc header data. This command does NOT load molbloc
information into the , it only accesses previously loaded information.
Syntax
“MOLBLOC”
Remarks
The external molbloc header data includes the serial number, range, calibration
date, and PRT calibration data. This data is stored in the molbloc, and is
downloaded to the on power up. The data for the active molbloc is
returned in a single, comma delimited string in the following order:
Serial Number
Range Designator
Range Flow Units
Gas
Calibration Date (yyyymmdd)
Total PRT Resistance (up downstream) at 0 °C [
Ω
]
PRT Slope [dimensionless]
Upstream PRT Resistance at 0 °C [
Ω
]
Downstream PRT Resistance at 0 °C [
Ω
]
molbloc-S nozzle Serial Number if the molbloc is a “-S” or same as the
molbloc serial number if a the molbloc is a “-L” molbloc.
“S”, “L”, or “L7” depending on whether the molbloc is a “-S” or “-L”. The “L7”
designation indicates the molbloc is using NIST based gas property data.
Example
Command:
Reply:
Reply:
Reply:
“MOLBLOC”
“100, 1.00, sccm, N2, 19980426, 200.0050, 0.7792, 100.0010,
100.0040, 100, L” (molbloc-L with original gas property data)
“100, 1.00, sccm, N2, 19980426, 200.0050, 0.7792, 100.0010,
100.0040, 100, L7” (molbloc-L with NIST based gas properties)
100, 1.00, sccm, N2, 19980426, 200.0050, 0.7792, 100.0010,
100.0040, 120, S” (molbloc-S)
Errors
ERR# 7:
ERR# 24:
ERR# 35:
ERR# 40:
ERR# 41:
The gas is invalid with the .
A molbloc is not connected to the .
The molbloc experienced a communications timeout.
The molbloc experienced a read checksum failure.
The molbloc data header is corrupted.
See Also
3.5.1, “DEVICE”
OHMS
Purpose
Read the most recent measurement of the active molbloc’s two PRTs.
Syntax
“OHMS”
Remarks
?????
Example
Sent:
Reply:
“OHMS”
“109.031 Ohms, 109.037 Ohms”
See Also
5.4, 3.4.5, “TEMP”
PCAL(=)
Purpose
Read or set the user RPT calibration adjustments (
PA
,
PM
).
Syntax
“PCAL=upadder, upmult, dnadder, dnmult”
“PCAL”
Defaults
“PCAL=0, 1.00000, 0, 1.00000”
Arguments
Upadder:
The upstream RPT calibration
adder
(
PA
) from –10,000 to
10,000 Pa.
Upmult:
The upstream RPT calibration
multiplier
(
PM
) from 0.9 to 1.1.
Dnadder:
The downstream RPT calibration
adder
from –10,000 to
10,000 Pa.
Dnmult:
The downstream RPT calibration
multiplier
from 0.9 to 1.1.
Mradder:
The optional microrange RPT calibration
adder
from –10,000 to
10,000 Pa.
Remarks
The user defined pressure calibration for the upstream and downstream RPTs
can be access with this single command. The
adder
is always in Pascal.
Example
Command:
Reply:
“PCAL=38, 1.0021, 14, .9942”
“ 38.00 Paa, 1.002100, 14.00 Paa, 0.994200”
Errors
ERR# 6:
Invalid argument.
See Also
5.2
