Endress+Hauser MT181 Specifications

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TI00070R/09/EN/02.18 71409786

Products Solutions Services

Technical Information

iTEMP TMT181

Universal head transmitter for resistance thermometers (RTD), thermocouples, resistance and voltage transmitters, PC programmable, for installation in a terminal head form B

Application

• PC programmable (PCP) temperature head transmitter for converting various input signals into an scalable 4 to 20 mA analog output signal

• Input: Resistance thermometer (RTD) Thermocouple (TC) Resistance transmitter () Voltage transmitter (mV)

• Online configuration using PC with TXU10-AA configuration kit (accessory)

Your benefits

• Universally PC programmable for various signals

• 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 to UL 3111-1

• Marine approval – Ex certification – ATEX Ex ia and dust ex zone 22 in compliance with

EN 50281-1 –FM IS –CSA IS

• Galvanic isolation

• Online configuration during measurement using SETUP connector

• Customer-specific linearization

• Adjustment of characteristic curve

•Output simulation

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iTEMP TMT181

Function and system design

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

Application example TMT181

a0016026

Measuring system The iTEMP PCP TMT181 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, thermocouples and voltage transmitters. Setting up of the TMT181 is done using the TXU10-AA configuration kit.

Input

Input signal Resistance thermometer (RTD)

Type Measurement ranges min.

measurement range

as per IEC 751 (a = 0.00385)

as per DIN 43760 (a = 0.00618)

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

Pt100 Pt500 Pt1000

Ni100 Ni500 Ni1000

-200 up to 850 °C

-200 up to 250 °C

-200 up to 250 °C)

-60 up to 180 °C

-60 up to 150 °C

cable resistance compensation possible in the 2 wire system (0 up to 20 ).

(-328 up to +1562 °F) (-328 up to +482 °F) (-328 up to +482 °F

(-76 up to +356 °F) (-76 up to +302 °F) (-76 up to +302 °F)

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

Sensor cable resistance max. 11  per wire

Sensor current ≤ 0.6 mA

Resistance transmitter ()

Type Measurement ranges min. measurement range

Resistance () 10 up to 400 

10 up to 2000 

10  100 

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iTEMP TMT181

Thermocouple (TC)

Type Measurement ranges min.

as per NIST Monograph 175, IEC 584

as per ASTME E988

as per DIN 43710

w/o MoRe5-MoRe41 0 up to 2000 °C (32 up to 3632 °F) 500 °C (900 °F)

Cold junction internal (Pt100) or external (0 up to 80 °C (32 up to 176 °F))

Accuracy of cold junction ± 1 K (± 1.8 °F)

Sensor current 30 nA

1) Higher measurement error for temperatures below 300 °C (572 °F).

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

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

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

0 up to +1820 °C

-200 up to +915 °C

-200 up to +1200 °C

-200 up to +1372 °C

-270 up to +1300 °C 0 up to +1768 °C 0 up to +1768 °C

-200 up to +400 °C

0 up to 2320 °C 0 up to 2495 °C

-200 up to +900 °C

-200 up to +600 °C

(32 up to 3308 °F) (-328 up to 1679 °F) (-328 up to 2192 °F) (-328 up to 2501 °F (-454 up to 2372 °F) (32 up to 3214 °F) (32 up to 3214 °F) (-328 up to 752 °F)

(32 up to 4208 °F) (32 up to 4523 °F)

(-328 up to 1652 °F) (-328 up to 1112 °F)

measurement range

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

50 °C (90 °F) 50 °C (90 °F)

Voltage transmitter (mV)

Designation Measurement ranges min. measurement

Millivolt transmitter (mV)

Output

Output signal Current output

4 up to 20 mA, 20 to 4 mA

Signal on alarm

Measurement range undercut linear drop to 3.8 mA

Exceeding measurement range linear rise to 20.5 mA

Sensor breakage, sensor short circuit

1) Not for thermocouple

range

-10 up to 100 mV 5 mV



3.6 mA or  21.0 mA

Load Max. load: (V

- 8 V) / 0.025 A

supply

Transmission behavior Temperature linear, resistance linear, voltage linear

Galvanic isolation I/O: U = 2 kV AC

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Filter 1st degree digital filter: 0 up to 8 s

Current limit ≤ 25 mA

iTEMP TMT181

Switch-on delay 4 s (I

Power supply

Terminal assignment

Voltage supply and current output SETUP connector

Sensor connection 2-wire 3-wire 4-wire

= 3.8 mA during swich-on)

a0016012 a0016011 a0 016010

a0016013 a0016014

Supply voltage 8 up to 35 V DC, polarity protected

Ex version: 8 up to 30 V DC

Residual ripple Permissible residual ripple USS ≤ 5V at Ub 13 V, f

Performance characteristics

Response time 1 s

Reference operating conditions

Maximum measured error Resistance thermometer (RTD)

Calibration temperature 23 °C ± 5 K (73.4 °F ± 9 °F)

Type Measurement accuracy

Pt100, Ni100 0.2 K (0.36 °F) or 0.08 %

1) % is related to the adjusted measurement range (the value to be applied is the greater).

Resistance transmitter ()

Type Measurement accuracy

= 1 kHz

max

Measurement range

Resistance ± 0.1  or 0.08 % 10 up to 400 

± 1.5  or 0.12 % 10 up to 2000 

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iTEMP TMT181

1) % is related to the adjusted measurement range (the value to be applied is the greater).

Thermocouple (TC)

Type Measurement accuracy

K, J, T, E, L, U N, C, D S, B, R, MoRe5MoRe41

Influence of the internal reference junction

1) % is related to the adjusted measurement range (the value to be applied is the greater).

typ. 0.5 K (0.8 °F) or 0.08 % typ. 1.0 K (1.8 °F) or 0.08 % typ. 2.0 K (3.6 °F) or 0.08 %

Pt100 DIN IEC 751 Kl. B

Voltage transmitter (mV)

Type Measurement accuracy

Millivolt transmitter ± 20 μV or 0.08 % -10 up to 100 mV

Influence of the supply voltage

Influence of the load ≤ ± 0.02 %/100 

1) % is related to the adjusted measurement range (the value to be applied is the greater).

2) All data is related to a measurement end value (FSD) of 20 mA.

≤ ± 0.01 %/V deviation from 24 V

Measurement range

Long-term drift 0.1 K/year (0.18 °F/year)

Influence of ambient temperature

Td = temperature drift T = deviation of ambient temperature from reference condition

or 0.05 %/year

1)2)

For temperatures in °F, divide the result by 1.8.

Resistance thermometer (RTD):

= ± (15 ppm/K * max. measurement range + 50 ppm/K * preset measurement range) * T

Resistance thermometer Pt100:

= ± (15 ppm/K * (range end value+200) + 50 ppm/K * preset measuring range) * T

Thermocouple (TC):

= ± (50 ppm/K * max. measurement range + 50 ppm/K * preset measurement range) * T

Installation

Mounting location Terminal head as per DIN EN 50446 Form B; field housing TAF10

Orientation No restrictions

1) under reference conditions

2) % is related to the adjusted measurement range (the value to be applied is the greater).

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iTEMP TMT181

Environment

Ambient temperature range -40 up to +85 °C (-40 up to +185 °F) (for Ex-areas, see Ex-certification or control drawings)

Storage temperature -40 up to +100 °C (-40 up to +212 °F)

Electromagnetic compatibility (EMC)

CE conformity EMC to all relevant requirements of the IEC/EN 61326-series and NAMUR Recommendation EMC (NE21). For details, refer to the Declaration of Conformity. Maximum fluctuations during EMC-tests: <1% of measuring span. Interference immunity to IEC/EN 61326-series, requirements for industrial areas Interference emission to IEC/EN 61326-series, electrical equipment Class B

Mechanical construction

Design, dimensions

Dimensions of the head transmitter

Weight 40 g (1.41 oz.)

a0003233

Materials Housing: PC

Potting: PUR

Terminals Cable up to max. 1.75 mm² (16 AWG)

Operability

Operating concept Remote operation

Configuration kit TXU10-AA (accessory) Interface cable plus PC software Readwin Interface: PC interface connection cable TTL -/- RS232 with plug Configurable parameters: sensor type and connection type, measurement dimension (°C/°F), measurement ranges, internal/external cold junction, compensation of cable resistance for 2-wire connection, signal on alarm, output signal (4 up to 20 mA/20 to 4 mA), digital filter (damping), offset, measurement point identification (8 characters), output simulation.

2000

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iTEMP TMT181

Certificates and approvals

CE mark This unit complies with the legal requirements laid out within the EU regulations.

Ex approval For further details on the available Ex versions (ATEX, CSA, FM, etc.), please contact your nearest E+H

sales organization. All relevant data for hazardous areas can be found in separate Ex documentation. If required, please request copies from us or your Endress+Hauser sales organisztion.

Marine approval For further details on the available "Type Approval Certificiates" (DNVGL, BV, etc.), please contact your

nearest Endress+Hauser sales organisation. All relevant data for marine approval can be found in separate "Type Approval Certificiates". If required, please request copies from us or your Endress+Hauser sales organisation.

UL approval UL recognized component (see www.ul.com/database, search for Keyword "E225237")

Ordering information

Product structure Detailed ordering information is available from the following sources:

• In the Product Configurator on the Endress+Hauser website: www.endress.com -> Click "Corporate"

-> Select your country -> Click "Products" -> Select the product using the filters and search field -> Open product page -> The "Configure" button to the right of the product image opens the Product Configurator.

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

Product Configurator - the tool for individual product configuration

• Up-to-the configuration

• 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

Accessories

Device-specific accessories Configuration kit TXU10-AA

Interface cable plus PC software Readwin

Documentation

Standard documentation • Operating instructions KA141R/09

• ATEX Safety instructions: – ATEX II1G: XA004R/09 – ATEX II3G: XA010R/09 – ATEX II3D: XA026R/09

2000

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iTEMP TMT181

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