CiDRA GVF-100 Gas Volume Fraction Monitoring System User Manual
Page 61
Copyright © 2006 CiDRA Corporation
Page 9-10
20639-01 Rev 03
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Status Messages - ‘S’:
A number of status messages can be displayed in the 20 character
status message field. They are as follows:
Status Message
Description
GF INITIALIZE MODE
GVF Initialize mode
INVALID SOS DATA
Invalid SOS data
BELOW MIN SS QUALITY
SOS quality below configured threshold
Table 9
Status Line Messages
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Quality Messages ‘Q’:
The Quality Field is a diagnostic field that can be used to view certain
quality values in the transmitter. The factory default is none. If more
than one quality is selected, the transmitter will cycle through each.
The options for display are speed of sound, pressure and temperature
(if used), band temperature, and a 3-level quality metric. The 3-level
fields represent a Red/Yellow/Green setting for the quality of the
output data. The yellow quality is the bounded value where data can
be considered valid, but is not fully reliable. Red indicates unusable,
and green indicates a good measurement.
Quality Message
Description
SOS ‘-1 to +1’
Quality metric of the measurement is between –1 and +1;
+1 is the most robust measurement system can make
RED
Quality metric is below the minimum quality factor entered
into the transmitter or the meter is in startup mode
YEL
Quality metric is usable but not highly reliable
GRN
Quality metric is highly reliable
B
Band temperature (°C)
T
Process temperature (either from remote sensor or
programmed into system, user selectable °C or F) (if used)
P
Process pressure (either from remote sensor or
programmed into system, user selectable units) (if used)
Table 10
Quality Message Definitions
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Mode Messages – ‘M’:
The four character mode field is used to display the operating mode of
the system. Their definitions are as follows:
Mode Message
Description
‘IDL’
Idle / Stop Mode
‘RAW’
Transferring raw data
‘SNG’
Performing a single measurement
‘GVF/SOS’
Running in Gas Volume Fraction / Speed Of Sound mode
Table 11
Mode Message Definitions