DTW

DTW

Technical Data

Characteristics

Digital Temperature-Transmitter

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Digital Temperature-Transmitter Page-1

2 - TRANSMITTER - EX - ATEX - TEMPERATURE

Input

Resistance thermometer: Sensor: Pt100 / Pt1000 Max. configurable measurement zone: -200...+850 °C Min. measuring span: 10 K / 3,8 (only higher value applies)Ω Measurement current: Max. 0,2 mA Specification: -2, -3, 4-wire Max. output resistance: 50 / wireΩ (only in 3- / 4-wire-circuits) Configurable: 2-wire-circuit Standard: IEC 60751:2008

Potentiometer: Sensor: Reed-chains Max. configurable measurement zone: 0...100 % (1...50 k ) Ω Min. measuring span: 10 % (min. 1 k ) Ω Measurement current at measuring: Max. 0,1 mA Specification: 3-wire Max. output resistance: 50 / wireΩ Standard: IEC 60751:2008

Output (Analog)

Current signal: 4...20 mA loopTransmission behaviour: Temperature linearity according to IEC 60751Current range: 3,8...20,5 mA (NAMUR NE43)Fault signal: Configurable (NAMUR NE43) Downscale: <3,6 mA Upscale: >21,0 mA

Applications

The Digital Temperature-Transmitters are designed for universal application in plant- and machine engineering. They are also used in process technologies. Their interference resistance is exceptional and their accuracy is high. DTW-Transmitter also have extensive observation and self-monitoring functions.

Input Pt100: 1x Pt100, 2-, 3-, 4-wire

Input Pt1000: 1x Pt1000, 2-, 3-, 4-wire

Input Potentiometer: Reed-chains, 3-wire

Output: 4 mA...20 mA current loop 2-wire

Power supply: DC 8...35 V

Temperature range: -40...+85 °C

Casing material: Plastic, plastic PBT, glass fibre reinforced

Electrical connection: Solid wire, cord with end splice

Protection category: IP00 / IP20

DTW

Technical Data (Continued)

Digital Temperature-Transmitter Page-2

Environmental Conditions

Ambient temperature: Standard: -40...+85 °C Option: -50...+105 °C (only for head version without ATEX)

Climatic influence: Class: Cx Standard: IEC 654-1:1993 Ranges: -40...+85 °C, 5...95 % r. F.

Humidity head version: Range: Max. 93 % ±3 % r. F. Standard: IEC 60068-2-38:2009 Test: Max. temperature change 65 °C / -10 °C

Humidity rail version: Range: Max. 95 % r. F. Standard: IEC 60068-2-30:2005 Test: Max. temperature 55 °C Vibration stability: Range: Amplitude 0,75 mm Standard: IEC 60068-2-6:2008 Test: Fc: 10...2000 Hz; acceleration 10 g

Shock stability: Load: 30 g / 11 ms 100 g /6 ms Standard: IEC 68-2-27:2009

Salt fog: Range: Severity level 1 Standard: IEC 68-2-52::1996 IEC 60068-2-52:1996

Condensation head version: allowedCondensation rail version: only allowed when mounted vertically

Free fall: Fall height: 1,5 m Standard: IEC 60721-3-2:1997 DIN EN 60721-3-2:1998 EMC: Classification: Emission group 1, class B Interference resistance: Industrial sector (HF, field, HF wire, ESD, burst, surge) Standards: DIN EN 55011:2010 DIN EN 61326-2-3:2013 NAMUR NE21:2012, GL 2012 VI Teil 7

CE-sign: EMC-guideline: 2004/108/EG EN 61326: Emission (group 1, class B) Interference resistance for the industrial sector ATEX / IECEx: 94/9/EG / Areas exposed to explosion hazards (option)

Accuracy

To determine the total error all possible error types need to be taken into account. See also accuracy-diagram in the appendix. (P. 8)

Reference conditions: Calibration temperature: 23 °C ±3 K) Auxiliary power: U = 24 Vi_ref

Atmospheric pressure: 860...1060 hPa

Temperature-coefficient: Pt100, Pt1000, Potentiometer: ≤ ±0,01 % of range / 1 K Influence auxiliary power: Pt100, Pt1000, Potentiometer: ±0,005 % of range / 1 V

Long term drift: Pt100, Pt1000, Potentiometer: <0,1 % of range / year

Standard: IEC 61298-2

DTWDigital Temperature-Transmitter Page-3

Accuracy (continued)

Measurement error: Pt100, Pt1000: 0,2 K or 0,1 % (higher value applies) value range <200 K: 0,2 K value range >200 K: 0,1 % of range Potentiometer: 0,2 % of range (relative accuracy) 1 % of range (absolute accuracy) Standard: DIN EN 60770, NAMUR NE145

Special case NE145

Interference by high-frequency electromagnetic fields

Frequency range: 80...400 MHz: Up to 0,8 % deviation from rangeTransient influence: 1,5 % deviation from range(Burst, Surge, ESD)

Technical Data (Continued)

Mechanics

Head versionCasing material: Plastic PBT, glass fibre reinforcedWeight: 45 gProtection category: IP00 (electronic completely encapsulated)

Connection clamps: Captive screws Wire cross-section solid wire: 0,14...2,5 mm² (AWG 24...14) Wire cross-section cord end splice: 0,14...1,5 mm² (AWG 24...16) Tools: Screwdriver, Pozidriv, size 2 ISO 8764 Tightening torque: 0,4 Nm Electrical connection: see page 4

Rail versionCasing material: PlasticWeight: 0,2 kgProtection category: IP20

Connection clamps: Captive screws Wire cross-section solid wire: 0,14...2,5 mm² (AWG 24...14) Wire cross-section cord end splice:: 0,14...1,5 mm² (AWG 24...14) Tools: Flat-blade screwdriver, 3x 0,5 mm ISO 2380 Tightening torque: 0,4 Nm

Electrical connection: see page 4

Both versionsTime response: Closing time: Max. 3 s Heating period: Max. 4 min.

The data mentioned in this data sheet is only accurate after the end of the heating period has been reached!

Step response time: <0,4 sDamping: 1...60 s (variable configuration)Typical measurement range: 2-, 4-wire circuit: 20/s measurement value update 3-wire circuit / potentiometer: 5/s measurement value update

Monitoring: Sensor break monitoring: Configurable Standard: increasing current Sensor short circuit: Configurable Standard: increasing current Value range monitoring: Over-/understepping: Configurable (Standard: deactivated)

Load Diagram

Auxiliary power U : DC 8...35 VB

Load R : R ≤ (U - 8 V) / 0,0215 AA a B

with R in Ω and U in VA B

Ex-relevant connection values see under „Safty-related parameters”, p. 5

The allowed load depends on the voltage of the loop supply.

Auxiliary Power U in VB

Min. Voltage Operating-voltage

Ex-Devices Non-Ex-Devices

0 8 24 30 35

744

1023

1256

0

Load R

in Ω

A

Electrical Connection

mA - +

1 2

3 4

1 2

3 4

17,599

113,6

Dimensions (in mm)

Configuration of Connector Clamps

The dimensions of the head version are balanced for use with DIN-connecting heads type B with extended mounting space.

The rail version is suitable for all standard rails according to IEC 60715.

DTW Head Version DTW Rail Version

Input

Output4...20 mA-loop

Potentiometer

4-Wire

1

2

3

2

3

44

3

2

4

3

2

-

-

++

mA

3-Wire 2-Wire

Resistance Thermometer/Resistance Sensor

in

+

-

1 32 4

+-

3

1 4

2

+

+

2

4

1

3

-

-mA - +

1 2

3 4

ConnectionProgramming Unit

DTW Rail Version

DTW Head Version

+-

3

1 4

2

Ø 7

33

Ø 44

22,5

DTWDigital Temperature-Transmitter Page-4

DTWDigital Temperature-Transmitter Page-5

Safety-Related Parameters

Intrinsically Safe Connection Values for the Current Loop (4...20 mA)

Connector clamps + / - + / -

Voltage Ui DC 30 V DC 30 V

Current Ii 130 mA 130 mA

Power Pi 800 mW 750/650/550 mW

Effective internal capacitance Ci 18,4 nF 18,4 nF

Effective internal inductance Li 3,91 µH 3,91 µH

DTW-x-IADust-Ex-Application

DTW-x-IA, DTW-x-ICGas-Ex-Application

Parameters

Protection level Ex ia IIC/IIB/IIA, Ex ia IIIC or Ex ic IIC/IIB/IIA

Sensor Circuit

Concerning the Applied Standards:

Due to distance requirements of the applied standards, the IS power and signal circuit and the IS sensor circuit should be considered as being galvanically connected to each other.

Concerning Explosion Protection:

The intrinsically safe supply and signal circuit and the intrinsically safe sensor circuit must be considered as galvanically connected to each other (with regard to explosion protection).

Notes on the Tables:

U : Maximum voltage of any conductor against the other three conductorso

I : Maximum output current for the least favourable connection of the internal current limiting resistorso

P : U x I divided by 4 (linear characteristic)o o o

Internal L and C from table „Sensor Circuit“ are already taken into account.

Connector clamps 1 - 4 1 - 4

Voltage Uo DC 30 V DC 30 V

Current Io 6,1 mA 6,1 mA

Power Po 46 mW 46 mW

Max. external capacitance Co

IIC 30 nF 180 nF

IIB IIIC 0,520 µF 1,37 µF

IIA 1,70 µF 5,40 µF

Max. external inductance Lo

IIC 1 mH 2 mH

IIB IIIC 1 mH 2 mH

IIA 1 mH 2 mH

Characteristics Linear

DTW-x-ICEx ic IIC/IIB/IIA

DTW-x-IAEx ia IIC/IIB/IIA

Ex ia IIICParameters

DTWDigital Temperature-Transmitter Page-6

Safety-Related Parameters (Continued)

Terminals 1 - 4

Power Po

Gas-Ex-Application DTW-x-nAProtection Level Ex nA IIC/IIB/IIA

Parameters

Sensor Circuit

0,33 mWDC 3,3 V (maximal voltage limited at V9)0,1 mA (maximal current limited at D10)

Ambient Temperature Range

Application Ambient T emperature Range Temperature Class

Group II -40 °C ≤ T ≤ +85 °Ca T4

-40 °C ≤ T ≤ +70 °Ca T5

-40 °C ≤ T ≤ +55 °Ca T6

Ambient Temperature Range

Application Ambient T emperature Range Temperature Class Power Pi

Group II -40 °C ≤ T ≤ +85 °Ca T4 800 mW

-40 °C ≤ T ≤ +70 °Ca T5 800 mW

-40 °C ≤T ≤ +55 °Ca T6 800 mW

Group IIIC -40 °C ≤T ≤ +40 °Ca N / A (not applicable) 750 mW

-40 °C ≤T ≤ +75 °Ca N / A 650 mW

-40 °C ≤T ≤ +85 °Ca N / A 550 mW

Safety-Related Parameters for Model DTW-x-nA Gas-Ex-Application

Terminals + / -

Voltage Ui DC 35 V

Current Ii 21,5 mA

Gas-Ex-Application DTW-x-nAProtection Level Ex nA IIC/IIB/IIA

Parameters

Supply- and Current Circuit (4...20 mA-loop)

Order Numbers

DTW

42-576

Digital Temperature-Transmitter Page-7

Subject to change, version 42-576

31535 Neustadt - GermanyE-MAIL: info@mueller-ie.com

TEL.: (+49) 05032-9672-111 FAX: (+49) 05032-9672-199

Factory Setting

Sensor: Pt100Circuit type: 3-wire circuitMeasurement range: 0...150°CError singaling: DownscaleDamping: Off

DTW Version head mounting with factory setting Setting: Pt100, 3-wire, 0...150 °C, downscale, off Order-No.: 600-00542

DTW Version head mounting with custom setting Setting: Please specify Order-No.: 600-00543

DTW Ex-version head mounting with custom setting Setting: Please specify Order-No.: 600-00545

DTW Head Versions

DTW Rail Versions

DTW Version rail mounting with factory setting Setting: Pt100, 3-wire, 0...150 °C, downscale, off Order-No.: 600-00546

DTW Version rail mounting with custom setting Setting: Please specify Order-No.: 600-00547

DTW Ex-version rail mounting with factory setting Setting: Pt100, 3-wire, 0...150 °C, downscale, off Order-No.: 600-00548

DTW Ex-version rail mounting with custom setting Setting: Please specify Order-No.: 600-00549

DTW Ex-version head mounting with factory setting Setting: Pt100, 3-wire, 0...150 °C, downscale, off Order-No.: 600-00544