Endress+Hauser MT182 Specifications

TI00078R/09/EN/15.19 71427690

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Technical Information

iTEMP HART® TMT182

Universal temperature Head transmitter for RTD, TC, resistance and voltage transmitters, HART® -protocol, for installation in a sensor head Form B

Application

• Temperature head transmitter with HART verting various input signals into an scalable 4 to 20 mA analog output signal

• Input:

• Resistance thermometer (RTD)

•Thermocouple (TC)

• Resistance transmitter ()

• Voltage transmitter (mV)

•HART

Your benefits

• Universal settings with HART® -protocol for various input sig-

• Operation, visualisation and maintenance via PC,

-protocol for front end unit or panel unit operation using the hand operating module (DXR275, DXR375) or PC (e. g. ReadWin® 2000 or FieldCare)

nals

e. g. FieldCare operating software

-protocol for con-

•2 wire technology, 4 to 20 mA analog output

• High accuracy in total ambient temperature range

• Fault signal on sensor break or short circuit, presettable to NAMUR NE 43

• EMC to NAMUR NE 21, CE

• UL recognized component

• Marine approval

• CSA General Purpose

• Ex-Certification

- ATEX Ex ia and dust zone 22 in

compliance with EN 50281-1

- FM IS

- CSA IS

• Galvanic isolation

•Output simulation

• Min./max. process value indicator function

• Customer specific linearization

• Linearization curve match

TMT182

Function and system design

Measuring principle Electronic monitoring and conversion of input signals in industrial temperature measurement.

Measuring system The iTEMP HART

TMT182 temperature head transmitter is a 2-wire transmitter with analog output. It has measurement input for resistance thermometers (RTD) in 2-, 3- or 4-wire connection, thermocouples and voltage transmitters. Setting up of the TMT182 is done using the HART® -Protocol with hand operating module (DXR275, DXR375) or PC (e.g. configuration software ReadWin

2000 or

FieldCare).

Input

Measured variable Temperature (temperature linear transmission behaviour), resistance and voltage

Measuring range Depending upon the sensor connection and input signal. The transmitter evaluates a number of

different measurement ranges.

Type of input

Type Measurement ranges Min. measurement range

Pt100 Pt500 Pt1000 acc. to IEC 60751 ( = 0.00385) Pt100 to JIS C1604-81 ( = 0.003916)

Resistance thermometer (RTD)

Resistance transmitter Resistance 

Thermocouple (TC)

Voltage transmitters Millivolt transmitter -10 to 75 mV 5 mV

Ni100 Ni500 Ni1000 acc. to DIN 43760 ( = 0.006180)

• Connection type: 2-, 3- or 4-wire connection

• Software compensation of cable resistance possible in the 2 wire system (0 to 30 )

• Sensor cable resistance max. 20  per cable in the 3 and 4 wire system

• Sensor current:  0.2 mA

• Corrosion detection as per NAMUR NE 89 for Pt100 4-wire connection (optional for 'Advanced Diagnostic' version, see 'Product structure'). If corrosion detection is active, the response time is 2 s.

B (PtRh30-PtRh6) C (W5Re-W26Re) D (W3Re-W25Re) E (NiCr-CuNi) J (Fe-CuNi) K (NiCr-Ni) L (Fe-CuNi) N (NiCrSi-NiSi) R (PtRh13-Pt) S (PtRh10-Pt) T (Cu-CuNi) U (Cu-CuNi) acc. to IEC 584 Part 1

• Cold junction: internal (Pt100)

• Cold junction accuracy: ± 1 K

-200 to 850 °C (-328 to1562 °F)

-200 to 250 °C (-328 to 482 °F)

-200 to 250 °C (-238 to 482 °F)

-200 to 649 °C (-328 to 1200 °F)

-60 to 250 °C (-76 to 482 °F)

-60 to 150 °C (-76 to 302 °F)

10 to 400 

10 to 2000 

0 to +1820 °C (32 to 3308 °F) 0 to +2320 °C (32 to 4208 °F) 0 to +2495 °C (32 to 4523 °F)

-270 to +1000 °C (-454 to 1832 °F)

-210 to +1200 °C (-346 to 2192 °F)

-270 to +1372 °C (-454 to 2501 °F)

-200 to +900 °C (-328 to 1652 °F)

-270 to +1300 °C (-454 to 2372 °F)

-50 to +1768 °C (-58 to 3214 °F)

-270 to +400 °C (-454 to 752 °F)

-200 to +600 °C (-328 to 1112 °F)

10 K (18 °F) 10 K (18 °F) 10 K (18 °F)

10 K (18 °F)

10 K (18 °F) 10 K (18 °F) 10 K (18 °F)

10 

100 

500 K (900 °F) 500 K (900 °F) 500 K (900 °F)

50 K (90 °F) 50 K (90 °F) 50 K (90 °F) 50 K (90 °F)

50 K (90 °F) 500 K (900 °F) 500 K (900 °F)

50 K (90 °F) 50 K (90 °F)

1) acc. to ASTM E988

2) acc. to DIN 43710

2 Endress+Hauser

TMT182

Output

Output signal Analog 4 to 20 mA, 20 to 4 mA

Signal on alarm • Underranging: linear drop to 3.8 mA

• Overranging: linear rise to 20.5 mA

• Sensor break; sensor short-circuit (not for thermocouples TC):  3.6 mA or  21.0 mA

Guaranteed values for setting "high alarm" ( 21 mA):

• Standard model: > 21.5 mA

• Advanced diagnostic model: 22.5 mA

Load max. (V

Linearization/transmission

Temperature linear, resistance linear, voltage linear

Power supply

- 11.5 V) / 0.022 A (Current output)

behaviour

Filter 1st order digital filter: 0 to 100 s

Galvanic isolation U = 2 kV AC (input/output)

Min. current consumption  3.5 mA

Current limit  23 mA

Switch on delay 4 s (during power up I

= 3.8 mA)

Power supply

Electrical connection

T09-TMT182ZZ-04-06-XX-en-000

Head transmitter terminal connections

For the unit operation via HART

protocol (terminals 1 and 2) a minimum load resistance of 250 is

necessary in the signal circuit!

Supply voltage U

= 11.5 to 35 V, polarity protection

Undervoltage detection Optional for 'Advanced Diagnostic' version.

If the supply voltage is not sufficient to output the output signal corresponding to the measured temperature, a signal on alarm  3.6 mA is generated. After approx. 2 to 3 s, the system makes another attempt to output the signal corresponding to the temperature.

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