Endress+Hauser MT127 Specifications

Technical information

iTEMP® Pt100 TMT127

Pt100 Temperature Transmitter for DIN rail mounting

Application

• Temperature transmitter with fixed measuring range
for converting a Pt100 input signal into an analogue,
scalable 4 to 20 mA output signal

Features and benefits

• Fixed measuring range for Pt100

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

• High accuracy in complete ambient temperature range

• Failure information when sensor breaks or short­circuits as per NAMUR NE 43

• EMC as per NAMUR NE 21, CE

• Ex approval

- ATEX EEx ia, nA

- CSA IS, NI

- CSA GP

- FM IS, NI

• GL Germanische Lloyd / marine approval

• UL recognized component

• Galvanic isolation

â Ó 4
0 1 2

TI095R/09/en
No. 51004790

Function and system design

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

®

Measuring system The iTEMP

measuring input for Pt100 in 2, 3, or 4-wire connection.

Pt100 TMT127 DIN rail temperature transmitter is a 2-wire transmitter with analogue output,

Input values

Measured variable Temperature

Measuring range Depending on the application, different measuring ranges can be ordered (see ’Product structure’).

TMT127

Input type

Input Designation Measuring range limits Min. span

Pt100

Resistance

thermometer

(RTD)

as per IEC 60751

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

• Cable resistance: sensor cable resistance of max. 40 Ω per cable

• Sensor current: ≤ 0.6 mA

Output values

Output signal Analogue 4 to 20 mA

Signal on alarm • Undershooting measuring range:

linear decrease to 3.8 mA

• Exceeding measuring range:
linear increase to 20.5 mA

• Sensor break; Sensor short-circuit:
≥ 21.0 mA (failure signal is guaranteed > 21.5 mA)

Load Max. (V

Linearisation/transmission behaviour

Temperature linear

Power supply

- 12V) / 0.022 A (current output)

-200 to 850 °C (-328 to 1562 °F) 10 K

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

Induced current requirement ≤ 3.5 mA

Current limitation ≤ 23 mA

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

= 3.8 mA)

a

2 Endress+Hauser

TMT127

Power supply

Electrical connection

Temperature transmitter terminal assignment

Supply voltage Ub= 12 to 35 V, reverse polarity protection

Residual ripple Permitted residual ripple U

≤ 3 V at Ub ≥ 15 V, f

ss

Accuracy

Response time 1 s

Reference operating conditions

Measuring error

Influence of supply voltage • ≤ ±0.01%/V deviation from 24 V

Influence of ambient temperature (temperature drift)

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

Designation Accuracy

Resistance
thermometer RTD

1) % refer to the set span. The highest value is valid.

Pt100 0.2 K (0.36 °F) or 0.08%

Percentages refer to the full scale value.

• Pt100 resistance thermometer:
= ±(15 ppm/K * (full scale value + 200) + 50 ppm/K * of set measuring range) * Δ ϑ

T

d

Δ ϑ = deviation of ambient temperature from the reference operating condition.

max.

= 1 kHz

1

Influence of load • ± 0.02%/100 Ω

Values refer to the full scale value

Long term stability • ≤ 0.1 K/year or ≤ 0.05%/year

Values under reference operating conditions. % refer to the set span. The highest value is valid.

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Installation conditions

Installation instructions Installation location

No restrictions

Environmental conditions

TMT127

Ambient temperature limits

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

Climate class as per IEC 60654-1, class C

Ingress protection IP 20

Shock resistance 4g / 2 to 150 Hz as per IEC 60068-2-6

Vibration resistance see “Shock resistance“

Electromagnetic compatibility (EMC)

Condensation permitted

-40 to +85 °C (-40 to 185 °F) for Ex-area, see Ex-certificate

Shock resistance and interference emission as per EN 61326-1 (IEC 61326) and NAMUR NE 21

Mechanical construction

Design, dimensions

Values in mm (inch)

Weight approx. 90 g (3.18 oz)

Materials Housing: PC/ABS, UL 94V0

Terminals Pluggable screw terminal, max. 2.5 mm

2

(0.0039 in2) solid, or strand with wire end sleeve

4 Endress+Hauser

TMT127

Display and operating system

Display elements Illuminated yellow LED (2 mm, 0.08 in) signals device operation.

Operating elements There are no operating elements available on the device.

Certificates and approvals

CE-Mark The device meets the legal requirements of the EC directives. Endress+Hauser confirms that the device has

been successfully tested by applying the CE mark.

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

organisation. All relevant data for hazardous areas can be found in separate Ex documentation. If required,
please request copies from us or your E+H sales organisation.

GL Ship building approval (Germanischer Lloyd)

Other standards and
guidelines

• IEC 60529:

Degree of protection provided by housing (IP-Code)

• IEC 61010:

Safety requirements for electrical measurement, control and laboratory use.

• IEC 61326:

Electromagnetic compatibility (EMC requirements)

•NAMUR

Standards working group for measurement and control technology in the chemical industry.
(www.namur.de)

UL Recognized component to UL 3111-1

Ordering information

Product structure

TMT127 iTEMP Pt100 TMT127

for temperature measurement with Pt100; Analog output 4 to 20 mA, 2-wire techn.; Galv. isol., fail. mode to NAMUR NE
43; 22.5 mm wide, for 35 mm top hat DIN rail according to IEC 60715; UL recognized, ship building approval GL

Approval

A Non hazardous areas

B ATEX II2(1)G EEx ia IIC T4/T5/T6

C FM IS, NI, Class I, Div. 1+2, Group ABCD

D CSA IS, NI, Class I, Div. 1+2, Group ABCD

E ATEX II3G EEx nA IIC T4/T5/T6

I FM+CSA IS, NI, Class I, Div. 1+2, Group ABCD

J CSA General Purpose

Terminal Type

2 RTD 2-wire

3 RTD 3-wire

4 RTD 4-wire

Temperature sensor

1 Pt100 (-200 to 850 °C, -328 to 1562 °F, min. span 10 K)

Measuring Range

BA -50 to 100 °C (-58 to 212 °F)

CA -40 to 60 °C (-40 to 140 °F)

DA -30 to 60 °C (-22 to 140 °F)

DB -30 to 150 °C (-22 to 302 °F)

DC -30 to 70 °C (-22 to 158 °F)

DE -10 to 200 °C (14 to 392 °F)

EA -20 to 20 °C ( -4 to 68 °F)

EB -20 to 60 °C ( -4 to 140 °F)

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Measuring Range

EC -20 to 70 °C ( -4 to 158 °F)

ED -20 to 80 °C ( -4 to 176 °F)

EN -10 to 40 °C (14 to 104 °F)

FC 0 to 50 °C (32 to 122 °F)

FE 0 to 100 °C (32 to 212 °F)

FG 0 to 150 °C (32 to 302 °F)

FH 0 to 200 °C (32 to 392 °F)

FI 0 to 250 °C (32 to 482 °F)

FJ 0 to 300 °C (32 to 575 °F)

FK 0 to 400 °C (32 to 752 °F)

FL 0 to 500 °C (32 to 932 °F)

FN 0 to 600 °C (32 to 1112 °F)

FO 0 to 160 °C (32 to 320 °F)

LA -40 to 140 °F

LB -40 to 200 °F

MA -20 to 400 °F

NA 0 to 100 °F

NB 0 to 200 °F

NC 0 to 300 °F

ND 0 to 500 °F

NE 0 to 750 °F

NF 0 to 900 °F

NH 0 to 1200 °F

OA 40 to 90 °C (104 to 194 °F)

Additional Option

A Basic version

B Works calibration certificate (6 test points)

K Standard model, North American region

TMT127 1 ⇒ Order code (complete)

TMT127

International Head Quarter

Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland

Tel. [phone]
Fax [phone]
www.endress.com
[email protected]

Accessories

No accessories are required for this device.

Documentation

Brochure ’Temperature measurement’ (FA006T/09/en)
Short operating manual “iTEMP
ATEX Safety instructions II2(1)G (XA013R/09/a3) and II3G (XA018R/09/a3)

®

RTD/TC DIN rail TMT 127/128“ (KA140R/09/a3)

TI095R/09/en/06.05
51004790
FM+SGML6.0 ProMoDo