Endress+Hauser MT85 Specifications

TI00134R/09/EN/04.17 71362820

Products Solutions Services

Technical Information

iTEMP TMT85

Dual Input Temperature Transmitter with FOUNDATION Fieldbus™ communication

Application

• Temperature transmitter with 2 universal input channels and FOUNDATION Fieldbus™ protocol for the conversion of different input signals into digital output signals

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

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

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

• Mounting bracket pipe or wall for the field housing

Your benefits

• Easy and standardized communication via FOUNDATION Fieldbus™ H1

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

• Safe operation in hazardous areas thanks to international approvals such as FM IS, NI; CSA IS, NI; ATEX Ex ia, Ex nA for intrinsically safe installation in zone 1 and zone 2

• High accuracy through sensor-transmitter matching

• Reliable operation with sensor monitoring and device hardware fault recognition

• Several mounting versions and sensor connection combinations

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

iTEMP TMT85

RTD/TC

1 x RTD/TC / 2 x RTD/TC

RTD/TC

0 - 10 bar

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

High speed Ethernet (HSE) 100 Mbit/s

32 devices per segment

Field controller

linking device

ENDRESS+HAUSER

linking device

31.25 kbit/s

H1 IEC 61158-2

H1 FISCO

Measuring point with

installed TMT85

Measuring point with

installed TMT85

Function and system design

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

Measuring system

A0007667

Application examples

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

sensor backup function and temperature-dependent switching

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

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

Device architecture

System integration via FOUNDATION Fieldbus™

2 Endress+Hauser

A0007668-EN

iTEMP TMT85

The temperature head transmitter is a two-wire device with two measuring inputs. Using FOUNDATION Fieldbus™, the device transfers converted signals from resistance thermometers and thermocouples in addition to other resistance and millivolt signals. The device is powered via the FOUNDATION Fieldbus™ H1 bus and can be 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 the following function blocks:

• 2 x 3 analog input (AI),

• 1 x standard PID controller (PID) and

• 1 x input selector (ISEL).

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.

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").

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)

Pt100 Pt200 Pt500

Pt1000

Pt100

Ni100 Ni120

Cu10

Ni120

Pt50

Pt100

-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 +510 °C (-328 to +950 °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)

as per GOST (α = 0.004280)

Cu50, Cu100

Pt100 (Callendar-Van

Dusen)

Polynomial nickel

Polynomial copper

-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

Endress+Hauser 3

Type of input Designation Measuring range limits

• 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

iTEMP TMT85

Resistance transmitter Resistance Ω 10 to 400 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

Type A (W5Re-W20Re) Type B (PtRh30-PtRh6) Type E (NiCr-CuNi) Type J (Fe-CuNi) Type K (NiCr-Ni) Type N (NiCrSi-NiSi) Type R (PtRh13-Pt) Type S (PtRh10-Pt) Type T (Cu-CuNi)

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

Type L (Fe-CuNi) Type U (Cu-CuNi) Type L (NiCr-CuNi)

• 2-wire connection

• Internal cold junction (Pt100, Class B)

• 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)

(mV)

0 to +2500 °C (+32 to +4532 °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) 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)

10 to 2000 Ω

+500 to +1820 °C (+932 to +3308 °F)

-200 to +800 °C (-328 to +1472 °F)

-20 to 100 mV

Recommended temperature range:

0 to +2500 °C (+32 to 4532 °F)

-150 to +1000 °C (-238 to +1832 °F)

-150 to +1200 °C (-238 to +2192 °F)

-150 to +1300 °C (-238 to +2372 °F) +50 to +1768 °C (+122 to +3214 °F) +50 to +1768 °C (+122 to +3214 °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)

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, 2-wire

Â Â - Â

----

Â Â Â Â

RTD or resistance transmitter, 3-wire

RTD or resistance transmitter, 4-wire

Thermocouple (TC), voltage transmitter

4 Endress+Hauser

iTEMP TMT85

Output

Output signal • FOUNDATION Fieldbus™ H1, IEC 61158-2

• 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

• LAS (link active scheduler), LM (link master) function is supported: Thus, the head transmitter can assume the function of a link active scheduler (LAS) if the current link master (LM) is no longer available. The device is supplied as a BASIC device. To use the device as an LAS, this must be defined in the distributed control system and activated by downloading the configuration to the device.

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

Breakdown information Status message in accordance with FOUNDATION Fieldbus™ specification.

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)

Switch-on delay 8 s

Data of the FOUNDATION Fieldbus interface

Basic Data

Device Type 11CE (hex)

Device Revision 02

Node address Default: 247

ITK Version 6.0.1

ITK-Certification Driver-No. IT085900

Link Master (LAS) capable yes

Link Master / Basic Device selectable

Number VCRs 44

Number of Link-Objects in VFD 50

yes; Default: Basic Device

Virtual communication references (VCRs)

Permanent entries 1

Fully configurable entries 43

Link Settings

Slot time 8

Min. Inter PDU delay 10

Max. response delay * slot time 24

Endress+Hauser 5

Blocks

Block description Block index

Resource Block Transducer Block Sensor 1 Transducer Block Sensor 2 Transducer Block Display Transducer Block Adv. Diag. Function block AI1 Function block AI2 Function block AI3 Function block AI4 Function block AI5 Function block AI6 Function block PID Function block ISEL

1) The values in brackets are valid if all the AI blocks (AI1-AI6) are instantiated.

Brief description of the blocks Resource Block

The Resource Block contains all the data that clearly identify and characterize the device. It is like an electronic device nameplate. In addition to parameters that are needed to operate the device on the fieldbus, the Resource Block also makes other information available such as the order code, device ID, hardware version, firmware version, etc.

Transducer Block "Sensor 1" and "Sensor 2"

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

Display Transducer

The parameters of the "Display" Transducer Block allow the configuration of the optional display.

Advanced Diagnostic

All the parameters for automatic monitoring and diagnosis are grouped together in this Transducer Block.

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).

PID

This function block contains input channel processing, proportional integral-differential control (PID) and analog output channel processing. The following can be implemented: basic controls, feedforward control, cascade control and cascade control with limiting.

Input Selector (ISEL)

The block for selecting a signal (Input Selector Block - ISEL) allows the user to choose up to four inputs and generates an output based on the configured action.

400 500 600 700 800 900 1000 1100 (1200) (1300) (1400) 1200 (1500) 1300 (1600)

Execution time (macro cycle ≤ 500 ms)

30 ms 30 ms 30 ms 30 ms (not instantiated) 30 ms (not instantiated) 30 ms (not instantiated) 25 ms 20 ms

iTEMP TMT85

Block class

Extended Manufacturer-specific Manufacturer-specific Manufacturer-specific Manufacturer-specific Extended Extended Extended Extended Extended Extended Standard Standard

Power supply

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

6 Endress+Hauser

iTEMP TMT85

Sensor input 2

Sensor input 1

Bus connection

and supply voltage

Display connection/ service interface

TC, mV

RTD, Ω4-, 3- and 2-wire:

RTD, Ω 3- and 2-wire:

TC, mV

white

red

white

red

(black)

(yellow)

(black)

Electrical connection

A0007285-EN

Terminal assignment of head transmitter.

Current consumption ≤ 11 mA

Terminals Choice of screw or spring terminals (see "Design, dimensions" diagram) for sensor and fieldbus wires:

Terminals version Wire version Conductor cross-section

Screw terminals (with latches at the fieldbus terminals for easy connection of a handheld terminal, e.g. FieldXpert, FC475)

Spring terminals Stripped length = min. 10 mm (0.39 in)

Rigid or flexible ≤ 2.5 mm

Rigid or flexible 0.2 mm

Flexible with wire-end ferrules without plastic ferrule

Flexible with wire-end ferrules with plastic ferrule

0.25 mm

(14 AWG)

to 1.5 mm2 (24...16 AWG)

to 0.75 mm2 (24...18 AWG)

No ferrules have to be used when connecting flexible wires to spring terminals.

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

Endress+Hauser 7

iTEMP TMT85

Maximum measured error

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

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

24 V

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)

1) Using fieldbus transmitted measured value

0 to +200 °C (32 to +392 °F)

0 to +800 °C (32 to +1472 °F)

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 Pt200 (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

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)

OIML R84:2003 / GOST 6651-2009

OIML R84:2003 / GOST 6651-94

Pt100 (1)

-200 to +850 °C (-328 to +1562 °F)

(-328 to +950 °F)

Pt1000 (4)

Cu50 (10)

Cu100 (11)

Ni100 (12)

Ni120 (13)

Cu50 (14) -50 to +200 °C

-200 to +250 °C (-328 to +482 °F)

(-328 to +950 °F)

(-301 to +2012 °F)

(-328 to +1562 °F)

-60 to 250 °C (-76 to 482 °F)

-60 to +250 °C (-76 to +482 °F)

-60 to +180 °C (-76 to +356 °F)

(-58 to +392 °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) +

≤ 0.09 °C (0.16 °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)

≤ 0.11 °C (0.2 °F) 0.09 °C (0.16 °F) +

≤ 0.06 °C (0.11 °F)

≤ 0.05 °C (0.09 °F) ≤ 0.03 °C (0.05 °F)

≤ 0.11 °C (0.2 °F) 0.1 °C (0.18 °F) + 0.004%

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)

0.05 °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) +

0.003% x (MW - MBA)

x (MW - MBA)

Digital value

0.08 °C (0.14 °F)

0.31 °C (0.56 °F)

≤ 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)

≤ 0.05 °C (0.09 °F)

≤ 0.04 °C (0.07 °F)

≤ 0.07 °C (0.13 °F)

8 Endress+Hauser

+ 16 hidden pages