Endress+Hauser MT84 Specifications

TI00138R/09/EN/05.17 71356457

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Technical Information

iTEMP TMT84

Dual Input Temperature Transmitter

PROFIBUS® PA communication

Application

• Temperature transmitter with 2 universal input channels and PROFIBUS® PA protocol for the conversion of different input signals into digital output signals

• The transmitter stands out due to signal reliability, long-term stability, high precision and advanced diagnostics function (important in critical processes)

• For the highest level of safety, availability and risk reduction

• Universal input usable for RTD thermometer, thermocouple (TC), resistance (Ω) or voltage transmitter (mV)

• DIN B style transmitter to fit in the smallest terminal heads or in remote housings in accordance with DIN EN 50446

• Optional installation in field housings even for use in Ex d areas

Your benefits

• Easy and standardized communication via PROFIBUS Profile 3.02

• Straightforward design of measuring points in Ex-areas through FISCO/FNICO conformity in accordance with IEC 600079-27

• Diagnostics information according to NAMUR NE107

• Safe operation in hazardous areas thanks to international approvals

• High accuracy through sensor-transmitter matching

• Reliable operation with sensor monitoring and device hardware fault recognition

• Rapid no-tools wiring due to optional spring terminal technology

• Compatibility mode for easy replacement of the previous model iTEMP TMT184

TMT84

RTD/TC

1 x RTD/TC / 2 x RTD/TC

RTD/TC

0 - 10 bar

PROFIBUS-DP

PROFIBUS-PA

IEC 61158-2

31.25 kbit/s

Visualisation and monitoring e. g. P View, FieldCare and diagnostic software

32 devices per segment

PLC

segment coupler

FISCO

Measuring point with

installed TMT84

Measuring point with

installed TMT84

segment coupler

Function and system design

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

Measuring system

Application examples

m Two sensors with measuring input (RTD or TC) in remote installation with the following advantages: drift warning,

sensor backup function and temperature-dependent switching

n Built-in head transmitter - 1 x RTD/TC or 2 x RTD/TC as redundancy

Endress+Hauser offers a wide range of resistance thermometers, thermocouples and matching thermowells. In conjunction with these components, the temperature transmitter forms a complete measuring point for various applications in the industrial sector.

Device architecture

A0007667

System integration via PROFIBUS® PA

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The temperature transmitter is a two-wire device with two measuring inputs. Using PROFIBUS® PA, the device transfers converted signals from resistance thermometers and thermocouples in addition to other resistance and millivolt signals. The device is powered via the PROFIBUS installed as an intrinsically safe apparatus in zone 1 hazardous areas. The device is used for instrumentation purposes in the terminal head form B as per DIN EN 50446. Data transfer takes place via 4 analog input (AI) function blocks:

Sensor diagnosis functions

Sensor diagnoses such as cable open circuit, short-circuit, cable corrosion, wiring error and device hardware error are supported. In addition, the work area of the sensor and the ambient temperature are monitored.

2-channel functions

These functions increase the reliability and availability of the process values:

• Sensor backup switches to the second sensor if the primary sensor fails.

• Drift warning or alarm if the deviation between sensor 1 and sensor 2 is less than or greater than a predefined limit value.

• Temperature-dependent switching between sensors which have advantages in different ranges.

Compatibility mode

For a easy replacement of the previous model iTEMP TMT184 with the TMT84 a compatibility mode is available. The switching between the standard mode and compatibility mode in the iTEMP TMT84 is done automatically during the connection establishment of the cyclic communication.

The Following points have to receive attention:

•Only PROFIBUS

• Only 1-channel operation possible.

• The diagnostics and status handling is equal to the previous model TMT184.

• The previous model TMT184 software locking is not available.

PA-Profile 3.0 is supported.

PA bus and can be

Input

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

Measuring range The transmitter records different measuring ranges depending on the sensor connection and input

signals (see "Type of input").

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Type of input It is possible to connect two sensors which are independent of each other. The measuring inputs are

not galvanically isolated from each other.

Type of input Designation Measuring range limits

Resistance thermometer (RTD)

as per IEC 60751 (α = 0.00385)

as per JIS C1604-81 (α = 0.003916) as per DIN 43760 (α = 0.006180)

as per Edison Copper Winding No.15 (α = 0.004274) as per Edison Curve (α = 0.006720) as per GOST (α = 0.003911)

as per GOST (α = 0.004280)

Pt100 Pt200 Pt500

Pt1000

Pt100

Ni100

Ni1000

Cu10

Ni120

Pt50

Pt100

Cu50, Cu100

Pt100 (Callendar-Van

Dusen)

Polynomial nickel

Polynomial copper

• Connection type: 2-wire, 3-wire or 4-wire connection, sensor current: ≤ 0.3 mA

• For 2-wire circuit, compensation for wire resistance possible (0 to 30 Ω)

• For 3-wire and 4-wire connection, sensor wire resistance up to max. 50 Ω per wire

-200 to 850 °C (-328 to 1562 °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)

-100 to 260 °C (-148 to 500 °F)

-70 to 270 °C (-94 to 518 °F)

-200 to 1100 °C (-328 to 2012 °F)

-200 to 850 °C (-328 to 1562 °F)

-200 to 200 °C (-328 to 392 °F)

10 to 400 Ω 10 to 2000 Ω 10 to 400 Ω 10 to 2000 Ω 10 to 400 Ω 10 to 2000 Ω

Resistance transmitter Resistance Ω 10 to 400 Ω

10 to 2000 Ω

Thermocouples (TC)

as per IEC 584, Part 1

as per ASTM E988

as per DIN 43710

as per GOST R8.8585-2001

Voltage transmitter (mV) Millivolt transmitter (mV) -20 to 100 mV

Type A (W5Re-W20Re) (30) Type B (PtRh30-PtRh6) (31) Type E (NiCr-CuNi) (34) Type J (Fe-CuNi) (35) Type K (NiCr-Ni) (36) Type N (NiCrSi-NiSi) (37) Type R (PtRh13-Pt) (38) Type S (PtRh10-Pt) (39) Type T (Cu-CuNi) (40)

Type C (W5Re-W26Re) (32) Type D (W3Re-W25Re) (33)

Type L (Fe-CuNi) (41) Type U (Cu-CuNi) (42) Type L (NiCr-CuNi) (43)

• Internal cold junction (Pt100)

• External cold junction: value adjustable from -40 to +85 °C (-40 to +185 °F)

• Maximum sensor resistance 10 kΩ (if the sensor resistance is greater than 10 kΩ, an error message is output in accordance with NAMUR NE89)

0 to +2 500 °C (+32 to +4 532 °F)

40 to +1820 °C (104 to 3308 °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)

-270 to +1300 °C (-454 to 2372 °F)

-50 to +1768 °C (-58 to 3214 °F)

-260 to +400 °C (-436 to 752 °F)

0 to +2315 °C (32 to 4199 °F)

-200 to +900 °C (-328 to 1652 °F)

-200 to +600 °C (-328 to 1112 °F)

-200 to +800 °C (-328 to 1472 °F)

-5 to 30 mV

+500 to +1820 °C (+932 to +3308 °F)

-150 to +1000 °C (-238 to +1832 °F)

-150 to +1200 °C (-238 to +2192 °F)

+50 to +1768 °C (+122 to +3214 °F) +50 to +1768 °C (+122 to +3214 °F)

Recommended temperature range:

0 to +2500 °C (+32 to 4532 °F)

-150 to +130 °C (-238 to +2372 °F)

-150 to +400 °C (-238 to +752 °F)

0 to +2000 °C (+32 to +3632 °F) 0 to +2000 °C (+32 to +3632 °F)

-150 to +900 °C (-238 to +1652 °F)

-150 to +600 °C (-238 to +1112 °F)

-200 to +800 °C (-328 to +1472 °F)

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When assigning both sensor inputs, the following connection combinations are possible:

Sensor input 1

Sensor input 2

RTD or resistance transmitter, 2-wire

RTD or resistance transmitter, 3-wire

RTD or resistance transmitter, 4-wire

Thermocouple (TC), voltage transmitter

RTD or resistance transmitter, 2wire

  - 

----

   

RTD or resistance transmitter, 3wire

RTD or resistance transmitter, 4wire

Thermocouple (TC), voltage transmitter

Input signal Input data: The transmitter is able to receive a cyclic value and its status sent by a master via

PROFIBUS

PA. That value and status is represented and can be read acyclically.

Output

Output signal •PROFIBUS® PA in accordance with EN 50170 Volume 2, IEC 61158-2 (MBP), galvanically isolated;

• FDE (Fault Disconnection Electronic) = 0 mA

• Data transmission rate: supported baud rate = 31.25 kBit/s

• Signal coding = Manchester II

•Output data: Available values via AI blocks: temperature (PV), temp sensor 1 + 2, terminal temperature

• In a control system the transmitter always operates as a slave and, dependent on the application, can exchange data with one or more masters.

• In accordance with IEC 60079-27, FISCO/FNICO

Breakdown information Status message in accordance with PROFIBUS

Linearization/transmission

Temperature linear, resistance linear, voltage linear

behavior

Mains voltage filter 50/60 Hz

Galvanic isolation U = 2 kV AC (sensor input to the output)

PA Profile 3.01/3.02 specification.

Current consumption ≤ 11 mA

Switch-on delay 8 s

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Sensor input 2

Sensor input 1

Bus connection

and supply voltage

Display connection/ service interface

TC, mV

RTD, Ω 4-, 3- and 2-wire:

RTD, Ω 3- and 2-wire:

TC, mV

white

red

white

red

(black)

(yellow)

(black)

PROFIBUS® PA basic data

Manufacturer spec. ID-no.: Profile 3.0 ID-no.: Manufacturer specific GSD

1551 (Hex) 9700 (Hex)

Profile 3.0 GSD Device address or bus address Bitmaps

Pa139700.gsd Pa139701.gsd Pa139702.gsd Pa139703.gsd

If the TMT84 operates in the compatibily mode, the device is identifying with the manufacturer specific ID-no.: 1523 (Hex) - TMT184 in the cyclic data exchange.

Brief description of the blocks Physical Block

The Physical Block contains all the data that clearly identify and characterize the device. It is like an electronicdevice nameplate. In addition to parameters that are needed to operate the device on the fieldbus, the Physical Block makes other information available such as the order code, device ID, hardware revision, software revision, device release, etc. Furthermore the display settings can be configured via the Physical Block.

Transducer Block "Sensor 1" and "Sensor 2"

The Transducer Blocks of the transmitter contain all the measurement-related and device-specific parameters that are relevant for measuring the input variables.

Analog Input (AI)

In the AI function block, the process variables from the Transducer Blocks are prepared for subsequent automation functions in the control system (e.g. scaling, limit value processing).

9701 (Hex) 9702 (Hex) 9703 (Hex)

126 (default) EH_1551_d.bmp

EH021551.gsd (Profile 3.01 EH3x1551.gsd)

EH_1551_n.bmp EH_1551_s.bmp

Power supply

Electrical connection

Terminal assignment of transmitter.

Supply voltage U = 9 to 32 V DC, polarity independent (max. voltage Ub = 35 V)

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Performance characteristics

Response time 1 s per channel

Reference operating conditions

• Calibration temperature: + 25 °C ± 5 K (77 °F ± 9 °F)

• Supply voltage: 24 V DC

• 4-wire circuit for resistance adjustment

Resolution Resolution A/D converter = 18 bit

Maximum measured error

Typical values, according to DIN EN 60770, 25 °C ± 3 °C (77 °F ± 5,4 °F), supply voltage

24 V

. The data concerning the various measured errors correspond to a standard deviation

of 2 σ (Gaussian normal distribution). These data include nonlinearity and repeatability.

Designation Measuring range Typical measured error (±)

Resistance thermometer (RTD) according to standard

IEC 60751:2008 Pt100 (1)

IEC 60751:2008 Pt1000 (4) 0.08 °C (0.14 °F)

GOST 6651-94 Pt100 (9) 0.07 °C (0.13 °F)

Thermocouples (TC) according to standard

IEC 60584-1 Typ K (36)

IEC 60584-1 Typ S (39) 0.97 °C (1.75 °F)

GOST R8.8585-2001 Typ L (43) 2.18 °C (3.92 °F)

0 to +200 °C (32 to +392 °F)

0 to +800 °C (32 to +1472 °F)

Digital value

0.08 °C (0.14 °F)

0.31 °C (0.56 °F)

1) Using fieldbus transmitted measured value

Measured error for resistance thermometer (RTD) and resistance transmitters

Measured error (±) Non-repeatability (±)

Standard Designation Measuring range

Maximum Relating to measured

IEC 60751:2008

IEC 60751:2008 Pt100 (2) ≤ 0.30 °C (0.54 °F) 0.11 °C (0.2 °F) + 0.018%

IEC 60751:2008 Pt500 (3) -200 to +510 °C

IEC 60751:2008

Pt100 (1)

Pt1000 (4)

-200 to +850 °C (-328 to +1562 °F)

(-328 to +950 °F)

-200 to +250 °C (-328 to +482 °F)

≤ 0.12 °C (0.21 °F) 0.06 °C (0.11 °F) +

≤ 0.16 °C (0.29 °F) 0.05 °C (0.09 °F) +

Digital

value

0.006% x (MW - MBA)

x (MW - MBA)

0.015% x (MW - MBA)

0.03 °C (0.05 °F) +

0.013% x (MW - MBA)

≤ 0.09 °C (0.16 °F)

JIS C1604:1984 Pt100 (5) -200 to +510 °C

GOST 6651-94 Pt50 (8) -185 to +1100 °C

GOST 6651-94 Pt100 (9) -200 to +850 °C

DIN 43760 IPTS-68 Ni100 (6)

DIN 43760 IPTS-68 Ni120 (7)

(-328 to +950 °F)

(-301 to +2012 °F)

(-328 to +1562 °F)

-60 to 250 °C (-76 to 482 °F)

≤ 0.20 °C (0.36 °F) 0.1 °C (0.18 °F) + 0.008%

≤ 0.11 °C (0.2 °F)

≤ 0.05 °C (0.09 °F)

0.05 °C (0.09 °F) +

0.006% x (MW - MBA)

x (MW - MBA)

0.05 °C (0.09 °F) +

0.006% x (MW - MBA)

≤ 0.05 °C (0.09 °F)

≤ 0.13 °C (0.23 °F)

≤ 0.08 °C (0.14 °F)

≤ 0.05 °C (0.09 °F)

≤ 0.04 °C (0.07 °F)

≤ 0.11 °C (0.2 °F)

≤ 0.05 °C (0.09 °F)

≤ 0.03 °C (0.05 °F)

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