Honeywell stt850 SMARTLINE User Manual page 45

Type
(Dual Inputs only)
Range Values
LRV
(FF only)
URV
MRV
(Dual Inputs only)
Units
<Return>
LRV
(HART/DE
only) ###. ##
<Return>
URV
(HART/DE
###. ##
only)
<Return>
MRV
(Dual Inputs
only)
###.##
HART only
<Return>
Set LRV
(HART/DE
ATTENTION: Executing this service will set the Lower Range
only)
Value (LRV) equal to the Input 1 measurement
<Return>
Set URV
(HART/DE
ATTENTION: Executing this service will set the Upper Range
only)
Value (URV) equal to the Input 1 measurement
Note 1: Changing the RTD ID (Pt100, Pt200, Pt500, Pt1000) will automatically disable CVD and set the CVD
coefficients to their default values for the RTD type selected.
Note 2: The Setpoint for the Rate of Change Alarm is configured in terms of PV change per minute. The STT850
monitors the PV change as a rolling window two seconds long and pro-rates this value in terms of PV change per
minute. If the rate of change measured during any two second window exceeds the configured Setpoint value
then the alarm will turn on. If Alarm Latching is disabled, then once the rate of change value falls below the
configured Setpoint and Hysteresis values, the alarm will turn off. If latching is enabled, then the alarm will not
turn off until the unit is reset or the alarm is cleared via the Alarm Latching Clear function.
Revision 3
Sensor 1,
Sensor 2,
Average,
Differential,
Redundant,
Split Range
####.##
####.##
####.##
°C, °F, °R, K
The limit for the Lower Range Value is the
Lower Range Limit (LRL) of the selected Sensor
ID.
The limit for the Upper Range Value is the
Upper Range Limit (URL) of the selected
Sensor ID.
Limits are the minimum URL and maximum LRL
of the selected Sensor 1 and Sensor 2 IDs.
Determines the point of transition of Loop
Control between Sensor 1 and Sensor 2 for
Split-Range Loop Control Mode.
STT850 Temperature Transmitter User's Manual
The range for the selected
type is shown
Lower Range value for Type
selected
Upper Range value for Type
selected
Middle Range value
(Applicable for Split Range
type only)
Press ↵ to
enter menu
selection
↑ and ↓ to
select entry.
↵ to enter
Read only
Press  to enter
menu selection
 to execute
Press  to enter
menu selection
 to execute
Press  to enter
menu selection
 to execute
Press  to enter
menu selection
 to execute
Press  to enter
menu selection
 to execute
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