Use in safety instrumented systems Temperature transmitter iTEMP TMT82
24 Endress+Hauser
Parameters and default settings for the expert mode
2-wire compensation Use this function to set the 2-wire compensation value.
Prerequisite: 2-wire must be selected in the Connection type parameter.
Factory setting: 0 (default setting for SIL mode, cannot be changed)
Sensor trimming Use this function to select the linearization method to be used for the
connected sensor.
Factory setting: FactoryTrim (default setting for SIL mode, cannot be
changed)
Alarm delay Use this function to set the time delay before an alarm is issued at the
current output.
Factory setting: 0 s (default setting for SIL mode, cannot be changed)
Unit Use this function to select the engineering unit for all the measured
values.
Factory setting: °C
Mains filter Use this function to select the mains filter for A/D conversion.
Factory setting: 50 Hz
Drift/difference mode Use this function to choose whether the device reacts to the drift/
difference set point being exceeded or undershot. Can only be selected for
2-channel operation.
Factory setting: Off
Drift/difference alarm category Use this function to select the category (status signal) as to how the
device reacts when a drift/difference is detected between sensor 1 and
sensor 2.
Prerequisite: The Drift/difference mode parameter must be activated
with the Out band (drift) or In band option.
Factory setting: maintenance required (M)
Drift/difference set point Use this function to configure the maximum permissible measured value
deviation between sensor 1 and sensor 2 which results in drift/difference
detection.
Prerequisite: The Drift/difference mode parameter must be activated
with the Out band (drift) or In band option.
Factory setting: 999.0
Drift/difference alarm delay Alarm delay for drift detection monitoring.
Prerequisite: The Drift/difference mode parameter must be activated
with the Out band (drift) or In band option.
Factory setting: 0 s (default setting for SIL mode, cannot be changed)
Device temperature alarm Use this function to select the category (status signal) as to how the
device reacts when the electronics temperature of the transmitter is
exceeded or undershot, < –40 °C (–40 °F) or > +82 °C (+180 °F).
Factory setting: out of specification (S)
Force safe state During the commissioning check or proof testing, this parameter can be
used to test error detection and the safe state of the device.
Prerequisite: The Operational state parameter displays SIL mode.
Factory setting: Off
Assign current output (PV) Use this function to assign a measured variable to the primary HART
®
value (PV).
Factory setting: sensor 1
Assign SV Use this function to assign a measured variable to the secondary HART
®
value (SV)
Factory setting: device temperature
Assign TV Use this function to assign a measured variable to the tertiary HART
®
value (TV).
Factory setting: sensor 1
Assign QV Use this function to assign a measured variable to the quaternary HART
®
value (QV).
Factory setting: sensor 1
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