Temperature transmitter iTEMP TMT82 Use in safety instrumented systems
Endress+Hauser 23
Parameters and default settings for the expert mode
Measuring mode Possibility of inverting the output signal. Options: standard (4 to 20 mA)
or inverse (20 to 4 mA).
Factory setting: Standard (default setting for SIL mode, cannot be
changed)
Sensor type n Use this function to select the sensor type for the sensor input n in
question:
• Sensor type 1: settings for sensor input 1
• Sensor type 2: settings for sensor input 2
Factory setting:
• Sensor type 1: Pt100 IEC751
• Sensor type 2: no sensor
Sensor n upper limit Displays the maximum physical full scale value.
Factory setting:
• For sensor type 1 = Pt100 IEC751: +850 °C (+1 562 °F)
• Sensor type 2 = no sensor
Sensor n lower limit Displays the minimum physical full scale value.
Factory setting:
• For sensor type 1 = Pt100 IEC751: –200 °C (–328 °F)
• Sensor type 2 = no sensor
Sensor offset n Use this function to set the zero point correction (offset) of the sensor
measured value. The value indicated is added to the measured value.
Factory setting: 0.0
Connection type n Use this function to select the connection type for the sensor.
Factory setting:
• Sensor 1 (connection type 1): 4-wire
• Sensor 2 (connection type 2): 2-wire
Reference junction n Use this function to select reference junction measurement for
temperature compensation of thermocouples (TC).
Factory setting: internal measurement
RJ preset value n Use this function to define the fixed preset value for temperature
compensation. The Preset value parameter must be set if the Reference
junction n (= fixed value) option is selected.
Factory setting: 0.00
Call./v. Dusen coeff. A, B and C Use this function to set the coefficients for sensor linearization based on
the Callendar/Van Dusen method.
Prerequisite: the RTD platinum (Callendar/Van Dusen) option is enabled
in the Sensor type parameter.
Factory setting:
• Coefficient A: 3.910000e-003
• Coefficient B: -5.780000e-007
• Coefficient C: -4.180000e-012
Call./v. Dusen coeff. R0 Use this function to set the R0 Value only for linearization with the
Callendar/Van Dusen polynomial.
Prerequisite: the RTD platinum (Callendar/Van Dusen) option is enabled
in the Sensor type parameter.
Factory setting: 100 Ω
Polynomial coeff. A, B Use this function to set the coefficients for sensor linearization of copper/
nickel resistance thermometers.
Prerequisite: The RTD Polynomial Nickel or RTD Polynomial Copper
option is enabled in the Sensor type parameter.
Factory setting:
• Polynomial coeff. A = 5.49630e-003
• Polynomial coeff. B = 6.75560e-006
Polynomial coeff. R0 Use this function to set the R0 Value only for linearization of nickel/
copper sensors.
Prerequisite: The RTD Polynomial Nickel or RTD Polynomial Copper
option is enabled in the Sensor type parameter.
Factory setting: 100 Ω
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