Emerson Rosemount OCX 8800 Reference Manual page 126

Foundation Fieldbus
Table 7-4: Transducer block parameter description
Parameter mnemonic
COMB_HTR_DUTYCYCLE
COMB_PERCENT_OF_RANGE
COMB_PREVIOUS_CONSTANT
COMB_PREVIOUS_SLOPE
COMB_PRIMARY_VALUE
COMB_PRIMARY_VALUE_
RANGE
COMB_PRIMARY_VALUE_TYPE
COMB_REFERENCE_OHMS
COMB_SECONDARY_VALUE
COMB_SECONDARY_VALUE_
RANGE
COMB_SENSOR_CAL_DATE
COMB_SENSOR_EXCITATION
COMB_SENSOR_TYPE
COMB_SETPOINT
116
Valid range
(continued)
Units
%
PPM
PPM/Ohm
Ohms
mA
° C
Description
Combustibles heater duty
cycle.
The percent of range of the
current combustibles read-
ing.
The combustibles calibra-
tion constant from the pre-
vious good calibration.
The combustibles calibra-
tion slope from the previ-
ous good calibration.
The value and status of the
combustibles concentra-
tion reading.
The high and low range
limit values, the engineer-
ing units code, and the
number of digits to the
right of the decimal point
for the combustibles read-
ing.
See FF-903, Section 3.3
The raw value of the com-
bustibles reference input.
The combustibles cell tem-
perature. This is deter-
mined from the value of
the combustibles reference
RTD.
The high and low range
limit values, the engineer-
ing units code, and the
number of digits to the
right of the decimal point
for the combustibles cell
temperature reading.
See FF-903, Section 3.3
Combustible reference cur-
rent
See FF-903, Sections 3.3
and 4.3.
Combustibles heater tem-
perature set point.
OCX 8800