4.3
Boreal Laser Inc.
GasFinder2 Operation Manual — Data I/O
July 17th 2017
Date and Time fi elds
When data is viewed using the ‘View Data’ window of the
GasViewOP
program, the time in
the
$GFDTA(B)
string is taken from the internal clock in the
GasFinder2
.
When data is downloaded using the
GasViewOP
program, the fi le extension is .gvl. The
date and time fi elds are taken from the computer running the
GasViewOP
program. These
PC generated date and time fi elds are inserted into the data in every
$GFXXX
string and will
appear in the log fi le.
When data is viewed using HyperTerminal or any similar data terminal program, the extension
is .txt and the data is a true representation of the raw data from the
GasFinder2
where the
$GFDBG
string does not have a date and time fi eld.
4-20mA Option
The 4-20mA output is taken directly from the pins in the DB15 output connector and does not
appear in the serial data stream. Note that a 4-20mA output is not available for Gas B in a
dual gas system.The 4-20mA output is confi gured using the
GasFinder2
keypad.
Details are given on pages 4.6 and 5.4.
These data are comma-delimited (,) and an asterisk (*) signifi es the end of a string.
Each string is terminated by a carriage return and a line feed.
Explanation:
$GFDBG
Periodically, strings containing diagnostic data (
$GFDBG
) are transmitted giving internal
details of the
GasFinderOP
operation.
The
$GFDBG
string is output whenever the system performs a calibration check.
The format of the
$GFDBG
string is as follows:
(* on systems with older software the duty cycle varied from 0 to 255)
debug_header
internal_temperature
centerline_duty_cycle
reference_cell_quality
reference_R2
reference_status
date_time
checksum
header designating the type of data
String
internal temperature of GasFinder in degrees C
Number
setting to enable array peaks to line up
Integer
reference cell quality as a percentage x 100
Integer
reference cell R2
Integer
code giving reference system operating status
Integer
current date and time
YYYY/MM/DD hh:mm:ss
checks the data stream for errors
String
checksum
reference_R2
debug_header
internal_temperature
centerline_duty_cycle
reference_status
date_time
reference_cell_quality
$GFDBG,
32.6,
512*
*,
9332,
98,
1,
1244,
2011/01/27 13:29:31
*8C
supply_voltage
Note that date and time are only shown in the computer generated log fi le, *.gvl
Summary of Contents for GasFinder2
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