Emerson Rosemount OCX 8800, Instruction Manual

Page: 132 / 306

Section 7: Foundation
Fieldbus
April 2017
Instruction Manual
IM-106-880C, OI
10
6
Transducer Block
Parameters
ELECTRONICS_TEMP_
INPUT
INITIATE_BLOWBACK
1=Do a manual
blowback
mV The current voltage reading of the electronics temperature sensor.
This initiates a blowback cycle. 1=Do a manual blow back
LINE_FREQUENCY Hz The Calculated line frequency.
LINE_VOLTAGE Volts The calculated line voltage.
MAX_ELECTRONICS_TEMP °C This is the maximum electronics temperature seen by the analyzer.
MAX_TEMP_RESET 1=Reset max
temperatures
This resets the maximum temperatures.
MODE_BLK See FF-891 section 5.3.
O2_AUTOCAL_INTERVAL 0-9999 Hours The time between automatic calibrations of the O
2
sensor.
O2_CAL_POINT_HI 0-40 % The value of the O
2
high test gas. This gas is also used as the low gas
for calibrating the combustibles sensor.
O2_CAL_POINT_LO 0-40 % The value of the O
2
low test gas.
O2_CELL_IMPEDANCE Ohms The instaneous impedance value for the O
2
cell.
O2_CONSTANT -20.0-20.0 mV The O
2
calibration constant.
O2_FAILED_CONSTANT mV This is the constant value calculated from the last failed O
2
calibration.
O2_FAILED_SLOPE mV/Decade This is the slope value calculated from the last failed O
2
calibration.
O2_HTR_DUTYCYCLE O
2
heater duty cycle.
O2_IMPEDANCE CAL Ohms The impedance value that was calculated as a result of the current
successful O
2
calibration.
O2_PERCENT_OF_RANGE % The percent of range of the current O
2
reading.
O2_PREVIOUS_CONSTANT mV The O
2
calibration constant from the previous good calibration.
O2_PREVIOUS_
IMPEDANCE Ohms The impedance value from the previous good calibration.
O2_PREVIOUS_SLOPE mV/Decade The O
2
calibration slope from the previous good calibration.
O2_PRIMARY_VALUE The value and status of the O
2
concentration reading.
O2_PRIMARY_VALUE_
RANGE
O2_PRIMARY_VLUE_TYPE See F-903
Section 4.1
The High and Low range limit values, the engineering units code, and
the number of digits to the right of the decimal point for the O
2
read-
ing.
See FF-903
Section 3.3
.
O2_SECONDARY_VALUE The temperature of the O
2
cell.
O2_SECONDARY_VALUE_
RANGE The High and Low range limit values, the engineering units code,
and the number of digits to the right of the decimal point for the O
2
cell temperature.
O2_SENSOR_CAL_DATE See FF-903 Section 3.3 .
O2_SENSOR_CAL_LOC See FF-903 Section 3.3 .
O2_SENSOR_CAL_
METHOD See FF-903 Section 3.3 and
Section 4.3
.
O2_SENSOR_CAL_WHO See FF-903
Section 3.3
.
O2_SENSOR_INPUT mV The raw value of the O
2
sensor input.
O2_SENSOR_TYPE See FF-903 Section 3.3 and
Section
4.3
. O2_SETPOINT °C O
2
heater temperature set point.
Parameter Mnemonic Valid Range Units Description
ELECTRONICS_TEMP °C The current temperature reading of the electronics temperature
sensor.