Emerson Process Management IM-106-910Xi instruction manual Probe Parameter Descriptions

Xi Advanced Electronics

Instruction Manual

IM-106-910Xi, Original Issue November 2010

PROBE PARAMETER DESCRIPTIONS

PARAMETER

Among the parameters available through the Xi and 375/475 Field Communicator menus are a number of "Probe Parameters". The probe parameters define variables that configure a specific probe in the transmitter system. Probe parameters are described in the following table.

TX	I/O	NAME	UNITS	PARAMETER DESCRIPTION
Y	Y	O2	%	Current oxygen concentration value (O2%). The value should reflect the last good O2 value if it
				is in the "Lock" state during calibration.
Y	Y	O2 Temp	degC	Current O2 sensor temperature.
Y	Y	CJC Temp	degC	Current cold junction temperature.
N	Y	Elec Temp	degC	Current electronic temperature measured at the I/O board.
Y	Y	O2 Cell	mV	Raw mV value for ZrO2 sensor.
N	Y	TC Volt	mV	O2 T/C voltage.
Y	Y	Cell Imp	Ohm	Cell impedance/sensor resistance measured.
Y	Y	Htr Volt	Volt	Heater voltage.
Y	Y	CPU Volt	Volt	Transmitter CPU voltage.
Y	Y	O2 AO	mA	Analog output value represents the O2 concentration measurement.
N	Y	O2 AO%	%	O2 analog output percentage for O2 AO.
Y	Y	O2 Temp Max	degC	This is the highest O2 sensor temperature reached since last reset.
Y	Y	CJC Temp Max	degC	This is the highest temperature reached at the cold junction since last reset.
N	Y	Elec Temp Max	degC	This is the highest temperature reached at the I/O board since last reset.
Y	Y	Htr Volt Max	degC	This is the highest heater voltage reached since last reset.
Y	Y	Htr Duty Cycle	--	O2 heater duty cycle. Value between 0 and 1.
Y	Y	PID SP	degC	PID temperature set point.
Y	Y	Htr Ramp Rate	degC/s	Heater ramp rate calculated in degree C per second.
N	Y	Flame Stat In	--	Flame status input state.
				(OFF/ON)
N	Y	SPS/IMPS In	--	SPS/IMPS input state.
				(OFF/ON)
N	Y	SPS/IMPS Out	--	SPS/IMPS output state.
				(OFF/ON)
N	Y	Alm Relay 1 Out	--	Alarm Relay 1 output state.
				(OFF/ON)
N	Y	Alm Relay 2 Out	--	Alarm Relay 2 output state.
				(OFF/ON)
Y	Y	OP Mode	--	Device operating mode:
				PO=Power up; WU=Warm Up (analog output is railed); NM=Normal operation;
				CA=Calibrating (analog output can be tracking or locked at last good value based on
				"AO Tracks" configuration); AL=Alarm detected (recoverable); SF=Alarm detected
				(non-recoverable)
Y	Y	Tag	--	Device tag.
Y	Y	Device ID	--	Unique Device ID number. (HART)
Y	Y	PV is	--	Primary variable assignment. (HART)
Y	Y	SY is	--	Secondary variable assignment. (HART)
Y	Y	TY is	--	Third variable assignment. (HART)
Y	Y	QV is	--	Fourth variable assignment. (HART)
Y	Y	Cal Slope	mV/Dec	Current calibration slope. This is the slope value that was calculated as a result of the last
				successful calibration.
Y	Y	Cal Const	mV	Current calibration constant. This is the constant value that was calculated as a result of the last
				successful calibration. It is valid between -4mV and +10mV.
Y	Y	Cal Imp	Ohm	Cell Impedance. This is the sensor resistance that was calculated as a result of the last
				successful calibration.
N	Y	Prev Slope	mV/Dec	Previous calibration slope. There are ten calibration results. 1 is the most recent and 10 is the
				least recent calibration slope.
N	Y	Prev Const	mV	Previous calibration constant. There are ten calibration results. 1 is the most recent and 10 is
				the least recent calibration constant.

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