Endress+Hauser MT142 Specifications

Technical Information

iTEMP® HART® TMT142

Temperature transmitter for resistance thermometers,
thermocouples, resistance transmitters and voltage transmitters,

®

adjustable via HART

protocol

Application

• Temperature field transmitter with HART
for converting various input signals to an analogue,
scalable 4 to 20 mA output signal

• Universal input usable for:
Resistance thermometer (RTD)
Thermocouples (TC)
Resistance transmitter (Ω)
Voltage transmitter (mV)

®

•HART

• Optional: stainless steel housing for EEx d application

Your benefits

• Universally programmable with HART

• Illuminated display, rotatable

• Operation, visualisation and maintenance with PC,

• Two-wire technology, analog output 4 to 20 mA

• Undervoltage detection

• Highly accurate in entire operating temperature range

protocol for operating the device on site using

handheld terminal (DXR375) or remotely via the PC

various input signals

e.g. using FieldCare or
ReadWin

®

2000 operating software

®

protocol

®

protocol for

• Sensor monitoring:
Failure conditioning, corrosion detection
to NAMUR NE 89

• Failure conditioning in event of sensor break or sensor
short-circuit, adjustable to NAMUR NE 43

• EMC to NAMUR NE 21, CE

• Approvals:
ATEX (EEx ia, EEx d and dust ignition-proof), FM and
CSA (IS, NI, XP and DIP)

• Galvanic isolation

• Output simulation

• Min./max. process value recorded

TI00107R/09/en
71190515

Function and system design

I

O

PMC731:PIC0001
Online

1>GroupSelect
2PV

0.7bar

HELP

TMT142

Commubox

FieldCare,
ReadWin 2000

®

DXR375

HART Communication

®

RN221N

®

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

Measuring system

TMT142

Example of an application of the field transmitter

The iTEMP® HART® temperature field transmitter TMT142 is a two-wire transmitter with an analogue output,
an input for resistance thermometers and resistance transmitters in 2-wire, 3-wire or 4-wire connection,
thermocouples and voltage transmitters. The LC display shows the current measured value digitally and as a
bar graph with an indicator for limit value violation. The TMT142 can be operated via the HART

®

protocol

using a handheld terminal (DXR375) or PC (FieldCare or ReadWin® 2000 operating software).

Corrosion detection

Sensor connection line corrosion can corrupt the measured value. For this reason, the device gives you the
opportunity to detect corrosion for thermocouples and resistance thermometers with a 4-wire connection
before measured value corruption takes place.

2 Endress+Hauser

TMT142

Input

Measured variable Temperature (temperature linear transmission behaviour), 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

Input Designation Measuring range limits

Resistance thermometer (RTD)

To IEC 60751
(α = 0.00385)

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

To Edison Copper Winding No.15
(α = 0.004274)
To SAMA
(α = 0.003923)
To Edison Curve
(α = 0.006720)
To GOST
(α = 0.003911)

To GOST
(α = 0.004280)

Pt100
Pt200
Pt500

Pt1000

Pt100

Ni100

Ni1000

Cu10

Pt100

Ni120

Pt50

Pt100

Cu50, Cu100

Polynomial RTD

Pt100 (Callendar - van Dusen)

• Type of connection: 2-wire, 3-wire or 4-wire connection

• With 2-wire circuit, compensation of wire resistance possible (0 to 30 Ω)

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

• Sensor current: ≤ 0.3 mA

-200 to 850 °C (-328 to 1562 °F)

-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)

-100 to 700 °C (-148 to 1292 °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)

-200 to 850 °C (-328 to 1562 °F)

-200 to 850 °C (-328 to 1562 °F)

Resistance transmitter Resistance Ω 10 to 400 Ω

10 to 2000 Ω

Thermocouples (TC)

To NIST monograph 175,
IEC 584

to ASTM E988

to DIN 43710

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

1) Increasing inaccuracy for temperatures < 300 °C (< 572 °F)

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)

• Internal cold junction (Pt100)

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

• Max. sensor resistance 10 kΩ (if sensor resistance is greater than 10 kΩ,
error message as per NAMUR NE 89)

1)

+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)

-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)

Endress+Hauser 3

Output

Ub

40 V

1261

1011

250

11 V

0

34.25 V16.75 V

Supply voltage (V DC)

Load ( )W

TMT142

Output signal

Analog output 4 to 20 mA, 20 to 4 mA (can be inverted)

Signal encoding FSK ± 0.5 mA via current signal

Data transmission rate 1200 baud

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

Failure information Failure information as per NAMUE NE43:

Failure information is created if the measuring information is missing or not valid. A complete list of all the
errors occurring in the measuring system is created.

Underranging Linear drop from 4.0 to 3.8 mA

Overranging Linear increase from 20.0 to 20.5 mA

Load (HART®)

Failure, e.g. sensor breakage; sensor short
circuit

R

b max.

= (U

- 11 V) / 0.023 A (current output)

b max.

≤ 3.6 mA ("low) or ≥ 21.6 mA ("high"), can be selected
The "high" alarm setting can be set between 21.6 mA and 23 mA,
thus providing the flexibility needed to meet the requirements of
various control systems.

Linearisation/transmission

Temperature linear, resistance linear, voltage linear

behaviour

st

Filter 1

order digital filter: 0 to 60 s

Current consumption • 3.6 to 23 mA

• Minimum current consumption ≤ 3.5 mA

• Current limit ≤ 23 mA

Protocol-specific data

®

HART

Version 5

Write protection

Device description files (DD) Information and files are available free of charge at:

Load (communication resistor)

Switch-on delay 4 s (during switch-on operation I

Hardware setting for activating write protection

www.endress.com
www.hartcomm.org

≤ 4 mA)

a

min. 250

Ω

A0010971-EN

4 Endress+Hauser

TMT142

Electrical connection

Power supply

Supply voltage U

= 11 to 40 V (8 to 40 V without display), reverse polarity protection

b

Power must be fed to the device from an 11 to 40 VDC power supply in accordance with NEC Class
02 (low voltage/current) with short-circuit power limit to 8 A/150 VA.

Cable entry

Version Type

Thread 3x thread NPT½"

Cable gland 2x cable gland M20x1.5

Residual ripple Perm. residual ripple U

3x thread M20x1,5

3x thread G½"

1x thread M24x1.5 and
2x M20x1.5

≤ 3 V at Ub ≥ 13.5 V, f

ss

max.

= 1 kHz

Endress+Hauser 5

Accuracy

Response time 1 s

TMT142

Reference operating conditions

Maximum measured error

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

• Supply voltage: 24 V DC

• 4-wire circuit for resistance adjustment

Designation

0.2 K (0.36 °F)

0.6 K (1.08 °F)

0.4 K (0.72 °F)
2 K (3.6 °F)

typ. 0.5 K (0.9 °F)
typ. 1 K (0.18 °F)
typ. 2 K (3.6 °F)

Resistance thermometer
(RTD)

Thermocouples (TC)

Cu100, Pt100, Ni100, Ni120
Pt500
Cu50, Pt50, Pt1000, Ni1000
Cu10, Pt200

K, J, T, E, L, U
N, C, D
S, B, R

1) % relates to the set span. Accuracy = digital + D/A accuracy

2) Only with the "Advanced Electronics" option

Measuring range

Resistance transmitter
(Ω)

10 to 400 Ω
10 to 2000 Ω

± 0.08 Ω
± 1.6 Ω

Voltage transmitter (mV) -20 to 100 mV ± 20 μV ± 10 μV

Accuracy

Digital D/A

0.1 K (0.18 °F)

0.3 K (0.54 °F)

0.2 K (0.36 °F)
1 K (1.8 °F)

typ. 0.25 K (0.45 °F)
typ. 0.5 K (0.9 °F)
typ. 1 K (1.8 °F)

Accuracy

Digital D/A

± 0.04 Ω
± 0.8 Ω

1)

2)

2

2

2

2)

2

2

0.02%

0.02%

0.02%

0.02%

2

0.02%

2

0.02%

2

0.02%

1)

0.02%

0.02%

0.02%

1) % relates to the set span. Accuracy = digital + D/A accuracy

2) Only with the "Advanced Electronics" option

Physical input range of the sensors

10 to 400 Ω Cu10, Cu50, Cu100, polynomial RTD, Pt50, Pt100, Ni100, Ni120

10 to 2000 Ω Pt200, Pt500, Pt1000, Ni1000

-20 to 100 mV Thermocouple type: C, D, E, J, K, L, N

-5 to 30 mV Thermocouple type: B, R, S, T, U

Repeatability 0.03% of the physical input range (15 Bit)

Resolution A/D conversion: 18 Bit

With the "Advanced Electronics" option:

0.015% of the physical input range (16 Bit)

Influence of supply voltage ≤ ±0.005%/V deviation from 24 V, related to the full scale value

Long-term stability ≤ 0.1 K (0.18 °F)/year or ≤ 0.05%/year

Data under reference conditions. % relates to the set span. The larger value applies.

6 Endress+Hauser

TMT142

Influence of ambient temperature (temperature drift)

Total temperature drift = input temperature drift + output temperature drift

Effect on the accuracy when ambient temperature changes by 1 K (1.8 °F)

Input 10 to 400 Ω 0.002% of measured value 0.001% of measured value

Input 10 to 2000 Ω 0.002% of measured value 0.001% of measured value

Input -20 to 100 mV typ. 0.002% of measured value (maximum

Input -5 to 30 mV typ. 0.002% of measured value (maximum

Output 4 to 20 mA typ. 0.002% of measured value (maximum

1) Only with the "Advanced Electronics" option

Typical sensitivity of resistance thermometers:

Pt: 0.00385 * R

Example Pt100: 0.00385 x 100 Ω/K = 0.385 Ω/K

Typical sensitivity of thermocouples:

B: 10 μV/K at
1000 °C (1832 °F)

L: 55 μV/K at 500
°C (932 °F)

/K Cu: 0.0043 * R

nominal

C: 20 μV/K at
1000 °C (1832 °F)

N: 35 μV/K at 500
°C (932 °F)

value = 1.5 x typ.)

value = 1.5 x typ.)

value = 1.5 x typ.)

D: 20 μV/K at
1000 °C (1832 °F)

R: 12 μV/K at
1000 °C (1832 °F)

/K Ni: 0.00617 * R

nominal

E: 75 μV/K at 500 °C
(932 °F)

S: 12 μV/K at 1000
°C (1832 °F)

typ. 0.001% of measured value1 (maximum
value = 1.5 x typ.)

typ. 0.001% of measured value
value = 1.5 x typ.)

typ. 0.001% of span

1.5 x typ.)

J: 55 μV/K at
500 °C (932 °F)

T: 50 μV/K at
100 °C (212 °F)

1

(maximum value =

nominal

1)

1

1

(maximum

/K

K: 40 μV/K at
500 °C (932 °F)

U: 60 μV/K at
500 °C (932 °F)

Example for calculating measured error for ambient temperature drift:

Input temperature drift Δϑ = 10 K (18 °F), Pt100, measuring range 0 to 100 °C (32 to 212 °F)
Maximum process temperature: 100 °C (212 °F)
Measured resistance value: 138.5 Ω (IEC 60751) at maximum process temperature

Typical temperature drift in Ω: (0.001% of 138.5 Ω) * 10 = 0.01385 Ω
Conversion to Kelvin: 0.01385 Ω / 0.385 Ω/K = 0.04 K (0.054 °F)

Influence of cold junction Pt100 DIN IEC 751 Cl. B (internal cold junction with thermocouples TC)

Installation

Installation instructions Mounting location

Direct mounting on the temperature sensor or indirect mounting using mounting bracket
(see 'Accessories').

Endress+Hauser 7

Environment

Ambient temperature limits • Without display: -40 to +85 °C (-40 °F to +185 °F)

• With display: -40 to +70 °C (-40 °F to +158 °F)

For use in hazardous areas, see Ex certificate

The display can react slowly for temperatures < -20 °C (< -4 °F). Readability of the display cannot be
guaranteed at temperatures < -30 °C (-22 °F).

Storage temperature • Without display: -40 to +100 °C (-40 °F to +212 °F)

• With display: -40 to +85 °C (-40 °F to +185 °F)

Altitude Up to 2000 m (6560 ft) above sea level according to IEC 61010-1, CSA 1010.1-92

Climate class As per EN 60 654-1, Class C

Degree of protection IP 67, NEMA 4x

Shock and vibration resistance 3g / 2 to 150 Hz as per IEC 60 068-2-6

TMT142

Electromagnetic compatibility (EMC)

Condensation Permitted

Installation category I

Pollution degree 2

Interference immunity and interference emission as per EN 61 326-1 (IEC 1326) and NAMUR NE 21

0.08...2 GHz 10 V/m; 1.4...2 GHz 30 V/m to EN 61000-4-3

8 Endress+Hauser

TMT142

°C

°F

%

K

10

0

20

30

40

50

60

70

80

90

100

!

Ê
Ë
Ì
Í
Î

Ï

Ð

Mechanical construction

Design, dimensions Die cast aluminum housing for general purpose or as option stainless steel housing

Dimensions in mm (and inches in brackets)

Display rotatable in 90°-stages

Weight • Approx. 1.6 kg (3.53 lb) (aluminium housing)

• Approx. 4.2 kg (9.26 lb) (stainless steel housing)

Material

Terminals Cables / wires up to max. 2.5 mm

Housing Nameplate

Die-cast aluminum housing AlSi10Mg/AlSi12 with powder
coating on polyester basis

Stainless steel 1.4435 (AISI 316L) 1.4404 (AISI 316L)

2

(AWG 13) plus ferrule

Human interface

Display elements

Aluminum AlMgl, anodized in black

LC display of the field transmitter (illuminated, can be rotated in 90 stages)

1: Bar graph display in 0 % stages with indicators for overranging/underranging
2: 'Caution' display
3: Unit display K, °F, °C or %
4: Measured value display (digit height 20.5 mm / 0.81 ")
5: Status and information display
6: 'Communication' display
7: 'Programming disabled' display

Endress+Hauser 9

TMT142

Operating elements No operating elements are present directly on the display. The device parameters of the field transmitter are

configured using the DXR375 handheld terminal or a PC with Commubox FXA191 and operating software
(e.g. FieldCare or ReadWin

Remote operation Configuration

See ’Operating elements’

Interface

®

communication via transmitter power supply (e.g. RN221N; see 'Measuring system').

HART

Configurable device parameters (selection)

Sensor type and type of connection, engineering units (°C/°F), measuring ranges, internal/external cold
junction, compensation of wire resistance with 2-wire connection, failure mode, output signal
(4 to 20/20 to 4 mA), digital filter (damping), offset, TAG+descriptor (8+16 characters), output simulation,
customized linearisation, recording of min./max. process value, analog output: channel 1 (C1)

®

2000).

Certificates and approvals

CE mark The device meets the statutory requirements of the EC directives. Endress+Hauser confirms successful testing

of the device by affixing to it the CE mark.

Ex approval Information about currently available Ex versions (ATEX, FM, CSA, etc.) can be supplied by your E+H Sales

Centre on request. All explosion protection data are given in a separate documentation which is available upon
request.

UL Recognized component to UL 3111-1

Other standards and guidelines

CSA GP CSA General Purpose

• IEC 60529:
Degrees of protection through housing (IP code)

• IEC 61010:
Protection measures for electrical equipment for measurement, control, regulation and laboratory
procedures

• IEC 1326:
Electromagnetic compatibility (EMC requirements)

•NAMUR
Association for Standards for Control and Regulation in the Chemical Industry

Ordering information

Detailed ordering information is available from the following sources:

•In the Product Configurator on the Endress+Hauser website:
www.endress.com
Configure this product

• From your Endress+Hauser Sales Center:
www.endress.com/worldwide

Product Configurator - the tool for individual product configuration:

• Up-to-the-minute configuration data

• Depending on the device: Direct input of measuring point-specific information such as measuring range or
operating language

• Automatic verification of exclusion criteria

• Automatic creation of the order code and its breakdown in PDF or Excel output format

• Ability to order directly in the Endress+Hauser Online Shop

È Select country È Instruments È Select device È Product page function:

10 Endress+Hauser

TMT142

Accessories

Device-specific accessories

Communication-specific accessories

Type Description Order Code

Mounting bracket • Mounting bracket, stainless steel pipe 1.5-3", 316L 51007995

Cable gland • Cable gland M20x1.5

Blanks (blind) • M20x1.5 EEx-d/XP

Overvoltage protection • Surge arrester HAW569

Active barrier • Active barrier RN221 for non-hazardous areas or as Ex version

Accessories Description

Commubox FXA195 HART

Commubox FXA291

WirelessHART adapter

Fieldgate FXA320

Fieldgate FXA520

• Cable gland NPT 1/2" D4-8.5, IP68

• Cable entry adapter M20x1.5 to NPT 1/2"

• G ½" EEx-d/XP

• NPT ½" Aluminum

Order code: HAW569-A11A for non-hazardous areas
Order code: HAW569-B11A for Ex areas ATEX 2(1)G EEx ia IIC

Order code: RN221-... see "Documentation"

For intrinsically safe HART communication with FieldCare via the USB interface.
For details, see "Technical Information" TI404F/00

Connects Endress+Hauser field devices with a CDI interface (= Endress+Hauser
Common Data Interface) and the USB port of a computer or laptop.
For details, see "Technical Information" TI405C/07

Is used for the wireless connection of field devices.
The WirelessHART adapter can be easily integrated into field devices and existing

infrastructures, offers data protection and transmission safety and can be operated in
parallel with other wireless networks with minimum cabling complexity.
For details, see Operating Instructions BA061S/04

Gateway for the remote monitoring of connected 4-20 mA measuring devices via a
Web browser.
For details, see "Technical Information" TI025S/04

Gateway for the remote diagnostics and remote configuration of connected HART
measuring devices via a Web browser.
For details, see "Technical Information" TI025S/04

51004949
51006845
51004387

51004489
51004916
51004490

Endress+Hauser 11

TMT142

System components and Recorders

Accessory Description

Graphic Data Manager
Memograph M

Multi channel recorder
Ecograph T

RN221N Active barrier with power supply for safe separation of 4-20 mA standard signal cir-

RNS221 Supply unit for powering two 2-wire measuring devices solely in the non-Ex area.

RB223 One or two-channel, loop-powered barrier for the safe separation of 4 to 20 mA stan-

RIA14, RIA16 Loop powered field indicator for 4 to 20 mA current loops, RIA14 with explosion

RIA15 Process display, digital loop powered display for 4 to 20 mA current loops.

The Memograph M graphic data manager provides information on all the relevant
process variables. Measured values are recorded correctly, limit values are monitored
and measuring points analyzed. The data are stored in the 256 MB internal memory
and also on a SD card

or USB stick.

For details, see "Technical Information" TI133R/09

Multi-channel data recording system with LC color grafic display (120 mm / 4.7"
screen size), galvanically isolated universal inputs (U, I, TC, RTD), digital input, trans­mitter power supply, limit relay, communication interfaces (USB, Ethernet, RS232/

485), internal Flash memory and CompactFlash card.
For details, see "Technical Information" TI115R/09

cuits. Offers bidirectional HART transmission.
For details, see "Technical Information" TI073R/09

Bidirectional communication is possible via the HART communication jacks.
For details, see "Technical Information" TI081R/09

dard signal circuits. Bidirectional communication is possible via the HART communi­cation jacks.
For details, see "Technical Information" TI132R/09

proof enclosure.
For details, see "Technical Informations" TI143R/09 and TI144R/09

For details, see "Technical Information" TI1040K/09

12 Endress+Hauser

TMT142

Documentation

• Field of activities brochure 'Temperature measurement' (FA006T/09/en)

• Installation instructions, FieldCare configuration software (BA031S/04/a4)

• Supplementary Ex documentation:
ATEX II2G EEx d: XA048R/09/a3
ATEX II1/2D: XA049R/09/a3
ATEX II1G: XA050R/09/a3
ATEX II3G: XA052R/09/a3
ATEX II1/2GD: XA066R/09/a3

• Technical Information 'Surge arrester HAW569' (TI1013K/09)

Endress+Hauser 13

TMT142

Instruments International

Endress+Hauser
Instruments International AG
Kaegenstrasse 2
4153 Reinach
Switzerland

Tel.[phone]
Fax[phone]
www.endress.com
[e-mail]

TI00107R/09/en/13.12
71190515
FM9.0