Fluke molbox RFM, Руководство по эксплуатации и обслуживанию, Страница: 118 / 172

molbox™ RFM™ OPERATION AND MAINTENANCE MANUAL
© 1998-2007 DH Instruments, a Fluke Company Page 108
DATE(=)
Purpose Read or set the internal clock date.
Syntax “DATE”
“DATE=yyyymmdd
Arguments yyyy:
mm:
dd:
The year from 1980 to 2079.
The month from 1 to 12.
The day from 1 to the last valid day of the given
month.
Example Command:
Reply:
“DATE=19981005”
“19981005”
Errors ERR# 7: The time date is invalid.
DEVICE=EXT
Purpose To load the molbloc data into the molbox RFM.
Syntax “DEVICE=EXT”
Remarks The molbloc calibration data is stored in the external molbloc.
This data is normally loaded on power up, but can be reloaded
using this command if the molbloc has been changed since
power up. Loading the data normally takes less than a second,
but can take up to 10 seconds if the molbox has problems
communicating with the molbloc.
Example Command:
Reply:
“DEVICE=EXT”
“EXT”
Errors ERR# 24:
ERR# 35:
ERR# 40:
ERR# 41:
A molbloc is not connected to the molbox RFM.
The molbloc experienced a communications
timeout.
The molbloc experienced a read checksum
failure.
The molbloc data header is corrupted.
See Also 3.2.8 and 3.3.4
DP
Purpose Read the differential pressure value used by molbox RFM to
calculate flow.
Syntax “DP”
Remarks The molbox RFM has upstream and downstream absolute RPTs
and may have an optional microrange differential RPT. The
pressure returned by this command is the differential pressure
value that is being used by molbox RFM to calculate flow.
Depending on the microrange setting, this can be the
tare
adjusted difference between the 2 absolute RPTs, the tare
adjusted microrange RPT, or a combination of the two. The first
3 characters of the reply from molbox RFM make up the
Ready/Not Ready c ondition (see the “SR” command). The
differential pressure string follows it.
Example Command:
Reply:
“DP”
“R 0.07 kPa”
See Also 3.2.5, 3.1.2.6, 3.1.2.4, “SR”, “MICRORNG”