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CiDRA Use of Foundation Fieldbus Protocol with SONARtrac Transmitters User Manual

Page 27

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Table 3 Transducer Block Configurations (Page 14)

FILTER_FLOW_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_FLOW_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).

GVF_NR_FILTER

FILTER_GVF_NR_FILTER_ENABLE

Unsigned
Char

R/W

Enables or disables the GVF noise reduction filter.

FILTER_GVF_NR_FILTER_MAGNITUDE_SELECTION

Unsigned
Char

R/W

Selects GVF noise reduction filter magnitude.

GVF_DAMPING_FILTER

FILTER_GVF_1ST_ORDER_DAMPING_FILTER_ENABLE

Unsigned
Char

R/W

Enables or disables GVF 1st order damping filter.

FILTER_GVF_DAMPING_TAU Float

R/W

Sets tau value for GVF 1st order damping filter.

GVF_SPIKE_FILTER

FILTER_GVF_SPIKE_FILTER_ENABLE

Unsigned
Char

R/W

Enables or disables GVF spike filter.

FILTER_GVF_SPIKE_FILTER_NO_FLOW_LENGTH

Unsigned
Char

R/W

Defines the required number of consecutive
measurements with good quality before a measurement
is deemed valid and displayed.

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