User Manual

ManualsBrandsCiDRA ManualsEquipmentUse of Foundation Fieldbus Protocol with SONARtrac Transmitters

Table 3 Transducer Block Configurations (Page 15)

FILTER_GVF_SPIKE_FILTER_LENGTH

Unsigned

Char

R/W

This parameter is used when the device is 'Holding' a

previous measurement due to a new measurement with

bad quality. The definition of this parameter is the

required number of consecutive measurements with bad

quality before the device enters the 'No Flow' state and

displays dashes.

FILTER_GVF_SPIKE_FILTER_UP_COUNT

Unsigned

Char

R/W

Each time a measurement with bad quality is made 'Up

Count' is added to an entity called the quality counter. If

the quality counter becomes less than or equal to zero

then the present measurement is displayed. If the

quality counter becomes greater than or equal to ('Filter

Length' x 'Up Count') then the device is forced into a 'No

Flow' condition and displays dashes.

FILTER_GVF_SPIKE_FILTER_DOWN_COUNT

Unsigned

Char

R/W

Each time a measurement with good quality is made

'Down Count' is subtracted from the quality counter. If

the quality counter becomes less than or equal to zero

then the present measurement is displayed. If the

quality counter becomes greater than or equal to ('Filter

Length' x 'Up Count') then the device is forced into a 'No

Flow' condition and displays dashes.

FILTER_GVF_SPIKE_FILTER_PERCENTAGE Float R/W

After 'Percent Len' measurements with good quality

have been displayed a new measurement with good

quality is deemed valid and displayed when the

difference between the maximum and minimum of the

present measurement and ('Percent Len' - 1) previous

consecutive measurements is less than the

measurement range (default of 27fps for Flow) times

('Percent' / 100).

FILTER_GVF_SPIKE_FILTER_FILT_PCT_WINDOW_LEN

Unsigned

Char

R/W

After 'Percent Len' measurements with good quality

have been displayed a new measurement with good

quality is deemed valid and displayed when the

difference between the maximum and minimum of the

present measurement and ('Percent Len' - 1) previous

consecutive measurements is less than the

measurement range (default of 27fps for Flow) times

('Percent' / 100).

20958-01 Rev 02