Technical Data TMT180
18 Endress+Hauser
10 Technical Data
10.0.1 Function and system design
Measuring principle Electronic monitoring and conversion of input signals in industrial temperature measurement.
Measuring system The temperature head transmitter is a two wire transmitter with an analog output. It has
measurement input for resistance thermometers (RTD) in 2-, 3- or 4-wire connection. Setting up of
the unit is done using the configuration set for PC.
10.0.2 Input
Measured variable Temperature (temperature linear transmission behavior)
Measuring range The transmitter monitors different measuring ranges depending on the sensor connection and input
signals.
Type of input
10.0.3 Output
Output signal Analog 4 to 20 mA, 20 to 4 mA
Breakdown information Breakdown information to NAMUR NE 43
Breakdown information is created when the measuring information is invalid or not present
anymore and gives a complete listing of all errors occuring in the measuring system.
Input Designation Measuring range limits Min. span
Resistance thermometer (RTD)
to IEC 751
(α = 0.00385)
Pt100 (TMT180-**1)
Pt100 (TMT180-**2)
-328 to 1202 °F (-200 to 650 °C)
-58 to 482 °F (-50 to 250 °C)
18 °F (10 °C)
18 °F (10 °C)
• Connection type: 2-, 3- or 4-wire connection
• Software compensation of cable resistance possible in the 2 wire system
(0 to 20 Ω)
• Sensor cable resistance max. 11 Ω per cable in the 3 and 4 wire system
• Sensor current: ≤ 0.6 mA
Signal (mA)
Under ranging Standard 3.8
Over ranging Standard 20.5
Sensor break; sensor short circuit low To NAMUR NE 43 ≤ 3.6
Sensor break; sensor short circuit high To NAMUR NE 43 ≥ 21.0
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