TotalFlow XRC6490, User Manual

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A-139
0x00000002, 2 - NX19 methane=1 / gravity=0 method
0x00000001, 1 - calculation error
2.
Log Period Record definition –
typedef struct
{
unsigned long date; /* Julian Date / Time */
unsigned int sn; /* Sequence Number */
float dp; /* period avg DP */
float ap; /* period avg AP */
float tf; /* period avg TEMP */
float ext; /* period EXTENSION */
float vol; /* period VOLUME */
float btu; /* period ENERGY */
unsigned int ftime; /* period FLOWTIME */
unsigned int ptime; /* period TIME */
unsigned char aflags[3]; /* period ALARMS */
unsigned char vcode;
/* Verification Code */
float mass; /* Day Mass */
float contract_baro; /* Average Contract Day baro pressure */
float avg_base_density; /* Average Day base density */
float avg_line_density; /* Average Day flowing density */
float avg_dayrec_tfrq; /* Not used */
} LOGRECORD;
3.
LCP Integral – this is the square root of the static pressure * differential pressure / flowing
temperature. For Selectable Units this field is always calculated as:
static pressure: bar
diff pressure: mbar
temperature: deg Kelvin
4.
The units for this group are dependent on the value of the heating select bit accessed via
register app.6.5. For a “0” the group is HV Volume, for “1” the group is HV Mass.
5.
If the transducer is a gage transducer and gage logging is selected then the value logged here
will be the log period average pressure – log period average barometric pressure. The units will
be those defined in the absolute pressure group.
Tube Daily Registers
ARRAY DESCRIPTION USAGE GROUP NAME
220 Daily Static Pressure Floating Point Abs Pressure, see note 5)
221 Daily Diff. Pressure Floating Point Diff Pressure
222 Daily Temperature Floating Point Temperature
224 Daily Extension Floating Point LCP Integral, see note 3)
225 Daily Volume Floating Point Log Volume
226 Daily Heating Value Floating Point HV Volume / HV Mass,
see note 4)