SIMENS Rail Transmitter SITRANS TR300, two-wire system, universal, HART

SITRANS TR300

SITRANS TR300 with HART- protocol is designed to support all commons, thermocouples, resistance and Millivolt sensors. Setup is quick and easy with SIMATIC PDM or handheld communicator. Unique user-friendly details are implemented: Without opening the 4-20mA loop the output current can be read out directly with a multimeter. A red/green LED shows the technician the status at a glance.


“HART” to beat – the universal SITRANS TR300 transmitter
  • Two-wire devices for 4 to 20 mA, HART
  • Device for rail mounting
  • Universal input for virtually any type of temperature sensor
  • Configurable over HART

Product No. / Product Description Listprice / Your price
7NG3033-…..
Temperature transmitter SITRANS TR300, for mounting on a standard DIN rail, two-wire system, 4 … 20 mA, HART, with electricial isolation, with documentation on CD

SITRANS TR300 Benefits

  • Measures temperature with a linear output signal
  • High accuracy across entire ambient temperature range
  • Reduces plant noise
  • Alarm signal for sensor break or short-circuit according NAMUR 43
  • Electro magnetic compatibility (EMC) according DIN EN 61326 and NE21
  • Galvanic insulation for accuracy and safety in thermocouple applications
  • Single- or dual-point trim
  • Custom characteristic curve for application of non-standard sensors
  • Difference- and average- measurement
  • Extensive diagnosis: e.g. drag indicator and time meter
  • Set of output current for simulation
  • Explosion protected versions for Europe
  • Rugged design, potted electronics

Application

SITRANS TR300 transmitters can be used in all industrial sectors. Their compact design enables simple mounting on standard DIN rails on-site in protective boxes or in control cabinets. The following sensors/signal sources can be connected over their universal input module:

  • Resistance thermometers (2, 3 or 4-wire system)
  • Thermocouples
  • Resistance-based sensors and DC voltage sources

The output signal is a direct current from 4 to 20 mA in accordance with the sensor characteristic, superimposed by the digital HART signal.

Transmitters of the “intrinsically safe” type of protection can be installed within potentially explosive atmospheres. The devices meet the directive 2014/34/EU (ATEX).

Function

The SITRANS TR300 is configured over HART. This can be done using a handheld communicator or even more conveniently with a HART modem and the SIMATIC PDM parameterization software. The configuration data are then permanently stored in the non-volatile memory (EEPROM).

Once the sensors and power supply have been correctly connected, the transmitter outputs a temperature-linear output signal and the diagnostics LED displays a green light. In the case of a sensor short-circuit, the LED flashes red, an internal device fault is indicated by a steady red light.

The test socket can be used to connect an ammeter at any time for monitoring purposes and plausibility checks. The output current can be read without any interruption, or even without opening the current loop.

SITRANS TR300 function diagram

Dimensional drawings

SITRANS TR300, dimensions in mm (inch)

Circuit diagrams

SITRANS TR300, pin assignment

SITRANS TR300, sensor connection assignment

Technical specifications

Input

Resistance thermometer

Measured variable

Temperature

Sensor type

  • According to IEC 60751

Pt25 … Pt1000

  • Acc. to JIS C 1604; a=0.00392 K-1

Pt25 … Pt1000

  • According to IEC 60751

Ni25 … Ni1000

  • Special type

Via special characteristic (max. 30 points)

Sensor factor

0.25 … 10 (adaptation of the basic type, e.g. Pt100 to version Pt25 … 1000)

Units

°C or °F

Connection

  • Standard connection

1 resistance thermometer (RTD) in 2-wire, 3-wire or 4-wire system

  • Averaging

2 identical resistance thermometers in 2-wire system for generation of average temperature

  • Differentiation

2 identical resistance thermometers (RTD) in 2-wire system (RTD 1 – RTD 2 or RTD 2 – RTD 1)

Connection

  • 2-wire system

Line resistance can be configured ≤100 Ω (loop resistance)

  • 3-wire system

No trim necessary

  • 4-wire system

No trim necessary

Sensor current

≤ 0.45 mA

Response time T63

≤ 250 ms for 1 sensor with break monitoring

Break monitoring

Always active (cannot be switched off)

Short-circuit monitoring

Can be switched on/off (default value: ON)

Measuring range

Assignable (see “Digital measuring error” table)

Min. measuring span

10 °C (18 °F)

Characteristic curve

Temperature-linear or special characteristic

Resistance-based sensor

Measured variable

Actual resistance

Sensor type

Resistance-based, potentiometers

Units

Ω

Connection

  • Normal connection

1 resistance-based sensor (R) in 2-wire, 3-wire or 4-wire system

  • Averaging

2 resistance-based sensors in 2-wire system for generation of average value

  • Differentiation

2 resistance thermometers in 2-wire system
(R1 – R2 or R2 – R1)

Connection

  • 2-wire system

Line resistance can be configured ≤100 Ω (loop resistance)

  • 3-wire system

No trim necessary

  • 4-wire system

No trim necessary

Sensor current

≤ 0.45 mA

Response time T63

≤ 250 ms for 1 sensor with break monitoring

Break monitoring

Always active (cannot be switched off)

Short-circuit monitoring

Can be switched on/off (default value: OFF)

Measuring range

Assignable max. 0 … 2200 Ω (see “Digital measuring error” table)

Min. measuring span

5 … 25 Ω (see “Digital measuring error” table)

Characteristic curve

Resistance-linear or special characteristic

Thermocouples

Measured variable

Temperature

Sensor type (thermocouples)

  • Type B

Pt30Rh-Pt6Rh acc. to IEC 584

  • Type C

W5%-Re acc. to ASTM 988

  • Type D

W3%-Re acc. to ASTM 988

  • Type E

NiCr-CuNi acc. to IEC 584

  • Type J

Fe-CuNi acc. to IEC 584

  • Type K

NiCr-Ni acc. to IEC 584

  • Type L

Fe-CuNi acc. to DIN 43710

  • Type N

NiCrSi-NiSi acc. to IEC 584

  • Type R

Pt13Rh-Pt acc. to IEC 584

  • Type S

Pt10Rh-Pt acc. to IEC 584

  • Type T

Cu-CuNi acc. to IEC 584

  • Type U

Cu-CuNi acc. to DIN 43710

Units

°C or °F

Connection

  • Standard connection

1 thermocouple (TC)

  • Averaging

2 thermocouples (TC)

  • Differentiation

2 thermocouples (TC) (TC1 – TC2 or TC2 – TC1)

Response time T63

≤ 250 ms for 1 sensor with break monitoring

Break monitoring

Can be switched off

Reference junction compensation

  • Internal

With integrated Pt100 resistance thermometer

  • External

With external Pt100 IEC 60751 (two-wire or three-wire connection)

  • External fixed

Reference junction temperature can be set as fixed value

Measuring range

Assignable (see “Digital measuring error” table)

Min. measuring span

Min. 40 … 100 °C (72 … 180 °F) (see “Digital measuring error” table)

Characteristic curve

Temperature-linear or special characteristic

mV sensor

Measured variable

DC voltage

Sensor type

DC voltage source (DC voltage source possible over an externally connected resistor)

Units

mV

Response time T63

≤ 250 ms for 1 sensor with break monitoring

Break monitoring

Can be switched off

Measuring range

Assignable max. -100 … 1100 mV

Min. measuring span

2 mV or 20 mV

Overload capability of the input

-1.5 … +3.5 V DC

Input resistance

≥ 1 MΩ

Characteristic curve

Voltage-linear or special characteristic

Output

Output signal

4 … 20 mA, 2-wire with communication acc. to HART Rev. 5.9

Auxiliary power

11 … 35 V DC (to 30 V with Ex i/ic; to 32 V with Ex nA)

Max. load

(Uaux – 11 V)/0.023 A

Overrange

3.6 … 23 mA, infinitely adjustable (default range: 3.84 mA … 20.5 mA)

Error signal (e.g. following sensor fault) (conforming to NE43)

3.6 … 23 mA, infinitely adjustable (default value: 22.8 mA)

Sample cycle

0.25 s nominal

Damping

Software filter 1st order 0 … 30 s (parameterizable)

Protection

Against reverse polarity

Electrical isolation

Between input and output (1 kVeff)

Measuring accuracy

Digital measuring error

See “Digital measuring error” table

Reference conditions

  • Auxiliary power

24 V ± 1 %

  • Load

500 Ω

  • Ambient temperature

23 °C

  • Warming-up time

> 5 min

Error in the analog output (digital/analog converter)

< 0.025 % of measuring span

Error due to internal reference junction

< 0.5 °C (0.9 °F)

Effect of ambient temperature

  • Analog measuring error of measuring span

< 0.02% of max. meas. span/10 °C (18 °F)

  • Digital measuring error
    • With resistance thermometers
    • With thermocouples

0.06 °C (0.11 °F)/10 °C (18 °F)

0.6 °C (1.1 °F)/10°C (18 °F)

Auxiliary power effect

< 0.001 % of meas. span/V

Effect of load impedance

< 0.002 % of meas. span/100 Ω

Long-term drift

  • In the first month

< 0.02 % of measuring span

  • After one year

< 0.2 % of measuring span

  • After 5 years

< 0.3 % of measuring span

Rated conditions

Ambient conditions

Ambient temperature

-40 … +85 °C (-40 … +185 °F)

Storage temperature

-40 … +85 °C (-40 … +185 °F)

Relative humidity

< 98 %, with condensation

Electromagnetic compatibility

According to EN 61326 and NE21

Design

Material

Plastic, electronic module potted

Weight

122 g

Dimensions

See “Dimensional drawings”

Cross-section of cables

Max. 2.5 mm² (AWG 13)

Degree of protection according to IEC 60529

  • Enclosure

IP20

Certificates and approvals

Explosion protection ATEX

EC type-examination certificate

PTB 07 ATEX 2032X

  • “Intrinsic safety” type of protection

II 2(1) G Ex ia/ib IIC T6/T4
II 3(1) G Ex ia/ic IIC T6/T4
II 3 G Ex ic IIC T6/T4
II 2(1) D Ex iaD/ibD 20/21 T115 °C

  • “Non-sparking equipment” type of protection

II 3 G Ex nA IIC T6/T4

Other certificates

EAC Ex(GOST), IECEx

Factory setting:

  • Pt100 (IEC 751) with 3-wire system
  • Measuring range: 0 … 100 °C (32 … 212 °F)
  • Fault current: 22.8 mA
  • Sensor offset: 0 °C (0 °F)
  • Damping 0.0 s
Digital measuring error

Resistance thermometer

Input

Measuring range

Minimum measuring span

Digital accuracy

°C / (°F)

°C

(°F)

°C

(°F)

According to IEC 60751

Pt25

-200 … +850 (-328 … +1562)

10

(18)

0.3

(0.54)

Pt50

-200 … +850 (-328 … +1562)

10

(18)

0.15

(0.27)

Pt100 … Pt200

-200 … +850 (-328 … +1562)

10

(18)

0.1

(0.18)

Pt500

-200 … +850 (-328 … +1562)

10

(18)

0.15

(0.27)

Pt1000

-200 … +350 (-328 … +662)

10

(18)

0.15

(0.27)

According to JIS C1604-81

Pt25

-200 … +649 (-328 … +1200)

10

(18)

0.3

(0.54)

Pt50

-200 … +649 (-328 … +1200)

10

(18)

0.15

(0.27)

Pt100 … Pt200

-200 … +649 (-328 … +1200)

10

(18)

0.1

(0.18)

Pt500

-200 … +649 (-328 … +1200)

10

(18)

0.15

(0.27)

Pt1000

-200 … +350 (-328 … +662)

10

(18)

0.15

(0.27)

Ni 25 to Ni1000

-60 … +250 (-76 … +482)

10

(18)

0.1

(0.18)

Resistance-based sensor

Input

Measuring range

Minimum measuring span

Digital accuracy

Ω

Ω

Ω

Resistance

0 … 390

5

0.05

Resistance

0 … 2200

25

0.25

Thermocouples

Input

Measuring range

Minimum measuring span

Digital accuracy

°C / (°F)

°C

(°F)

°C

(°F)

Type B

100 … 1820
(212 … 3308)

100

(180)

21)

(3.6)1)

Type C (W5)

0 … 2300
(32 … 4172)

100

(180)

2

(3.6)

Type D (W3)

0 … 2300
(32 … 4172)

100

(180)

12)

(1.8)2)

Type E

-200 … +1000
(-328 … +1832)

50

(90)

1

(1.8)

Type J

-210 … +1200
(-346 … +2192)

50

(90)

1

(1.8)

Type K

-230 … +1370
(-382 … +2498)

50

(90)

1

(1.8)

Type L

-200 … +900
(-328 … +1652)

50

(90)

1

(1.8)

Type N

-200 … +1300
(-328 … +2372)

50

(90)

1

(1.8)

Type R

-50 … +1760
(-58 … +3200)

100

(180)

2

(3.6)

Type S

-50 … +1760
(-58 … +3200)

100

(180)

2

(3.6)

Type T

-200 … +400
(-328 … +752)

40

(72)

1

(1.8)

Type U

-200 … +600
(-328 … +1112)

50

(90)

2

(3.6)

1) The digital accuracy in the range 100 to 300 °C (212 to 572 °F) is 3 °C (5.4 °F).

2) The digital accuracy in the range 1750 to 2300 °C (3182 to 4172 °F) is 2 °C (3.6 °F).

mV sensor

Input

Measuring range

Minimum measuring span

Digital accuracy

mV

mV

μV

mV sensor

-10 … +70

2

40

mV sensor

-100 … +1100

20

400

The digital accuracy is the accuracy after the analog/digital conversion including linearization and calculation of the measured value.

An additional error is generated in the output current 4 to 20 mA as a result of the digital/analog conversion of 0.025% of the set measuring span (digital-analog error).

The total error under reference conditions at the analog output is the sum from the digital error and the digital-analog error (poss. with the addition of reference junction errors in the case of thermocouple measurements).