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Revision 4.0
STT850 Series HART/DE Option User’s Manual
Page 45
Online/Device
Setup/Detailed Setup
NAMUR Option
Select from the following:
Namur Selection: select to enable or disable the
Namur option for the output. (Refer to the PV
Ranges/Limits chart) for effect on output signal.
Namur Level: Displays a diagram of the operating
range and failsafe range of the Analog output for
Normal and Namur configurations.
Displays the information related to the Sensor Type,
Sensor ID
Allows user to configure the low cal point and high cal
point of sensor1 as per requirement.
Displays the LTL, UTL and LRL, URL values of
sensor1
Signal Condition
The following signal control parameters may be
configured in this menu:
PV Damp: Enter a value for damping of the device
output. Entries may be any floating point value
from 0.00 to 102.00 seconds.
PV URV: Upper Range Value or span (input which
represents 100% output). Range of entries is
from LTL1 to UTL1 or LTL2 and UTL2.
PV LRV: Lower Range Value or zero (input which
represents 0% output). Range of entries is from
LTL1 to UTL1 or LTL2 and UTL2.
PV % range: Displays the current value of AO
(analog output) in %
CJ Compensation: Select Internal or Fixed Cold
Junction Compensation for the temperature
measurement. If Internal Compensation is
selected, the Cold Junction temperature
measured internally by the sensor is used. If
Fixed Compensation is selected, the Fixed Cold
Junction Temperature Value must be configured.
CJ Selection: The value selected in the CJ
Compensation method described above.
Fixed CJ Compensation Value: If Fixed CJ
Compensation has been selected, enter the
desired fixed value of Cold Junction temperature
here
Output Condition
The following output-related values and operations are
available in this menu:
Poll Address: Select HART short address 0 to 63.
Num req preams: displays the number of required
request preambles for the STT850 HART
communications