NHÀ PHÂN PHỐI CHÍNH THỨC CỦA HÃNG SIEMENS VÀ HACH TẠI VIỆT NAM

Danh mục sản phẩm

Đặt hàng nhanh

Danh mục sản phẩm

SITRANS TR420 (HART, UNIVERSAL) Overview

Đánh giá trung bình

(5/5)

1 Đánh giá

Số lượng:

+

Overview

  • 2‑wire rail transmitter with HART communications interface
  • Device for rail mounting
  • Universal input for virtually any type of temperature sensor
  • Connection of two independent input circuits for redundant operation (high input availability)
  • Input drift detection
  • Configurable via HART 7
 

Benefits

  • Compact design
  • Connection of two independent input circuits for redundant operation (high input availability)
  • Galvanic isolation
  • Test terminals for ammeter
  • Diagnostics LED (green/red)
  • Input monitoring wire break and short-circuit
  • Self-monitoring
  • Configuration status stored in EEPROM
  • Expanded diagnostic functions, such as slave pointer, operating hours counter, etc.
  • Special characteristic
  • Electromagnetic compatibility according to EN 61326 and NE21
  • SIL2/3 (with order note C20)

Application

SITRANS TR420 transmitters with two inputs can be used in all 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:

  • 2 resistance thermometers (2-wire, 3-wire, 4-wire connection)
  • 2 thermocouples
  • 2 linear resistors, potentiometer and DC voltage sources

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

The dual input mode also supports drift detection of the inputs, whereby maintenance intervals can be more easily planned.

Transmitters of the "intrinsically safe or Zone 2 increased safety" type of protection can be installed in hazardous areas. The device meets the requirements of the EU Directive 2014/34/EU (ATEX), the FM and CSA regulations as well as other national approvals.

Function

The SITRANS TR420 is configured via HART. The configuration can be carried out using a handheld communicator or, more conveniently, with a HART modem and the SIMATIC PDM configuration software. The configuration data are then permanently stored in the non-volatile memory (EEPROM).

After correct connection of input and supply voltage, the transmitter outputs a temperature-linear output signal and the diagnostics LED is green. In case of external errors, e.g. sensor short circuit or interruption, the LED flashes red; an internal error is indicated by a permanent red light.

An ammeter can be connected at any time for checking and plausibility via the test terminals. The output current can be read without any interruption, or even without opening the current loop.

SITRANS TR420, function block diagram

Technical specifications

SITRANS TR420 (HART, universal)

General

 

 

Supply voltage1) 2)

 

 

  • Without explosion protection (non-Ex)

7.5 ... 48 V DC

  • With explosion protection (Ex i)

7.5 ... 30 V DC

Additional minimum supply voltage when using test terminals

0.8 V

Maximum power loss

≤ 850 mW

Minimum load resistance at supply voltage > 37 V

(Vsupply - 37 V)/23 mA

Insulation voltage, test/operation

 

 

  • Without explosion protection (non-Ex)

2.5 kV AC/55 V AC

  • With explosion protection (Ex i)

2.5 kV AC/42 V AC

Polarity protection

All inputs and outputs

Write protection

Wire jumpers or software

Warm-up time

< 5 min

Starting time

< 2.75 s

Programming

SIPROM T and HART

Signal-to-noise ratio

> 60 dB

Long-term stability

Better than:

  • ± 0.05% of measuring span/year
  • ± 0.18% of measuring span/5 years

Response time

≤ 75 ms (typically 70 ms)

Programmable damping

0 ... 60 s

Signal dynamic

 

 

  • Input

24 bit

  • Output

18 bit

Influence of change in supply voltage

< 0.005% of measuring span/V DC

Input

 

 

Resistance thermometer (RTD)

 

 

Input type

 

 

  • Pt10 ... 10000
  • IEC 60751
  • JIS C 1604‑8
  • GOST 6651_2009
  • Callendar-Van Dusen
  • Ni10 ... 10000
  • DIN 43760-1987
  • GOST 6651-2009/OIML R84:2003
  • Cu5 ... 1000
  • Edison Copper Winding No. 15
  • GOST 6651‑2009/OIML R84:2003

Connection type

2-wire, 3-wire or 4-wire

Wire resistance per wire

Max. 50 Ω

Input current

< 0.15 mA

Effect of the wire resistance
(with 3-wire and 4-wire connections)

< 0.002 Ω/Ω

Cable, wire-wire capacity

 

 

  • Pt1000, Pt10000 (IEC 60751 and JIS C 1604‑8)

Max. 30 nF

  • All other input types

Max. 50 nF

Fault detection, programmable

None, short-circuited, defective, short-circuited or defective

Note

When the low limit for the configured input type is below the constant detection limit for short-circuited inputs, the detection of short circuits is disabled regardless of the configuration of the fault detection.

Detection limit for short-circuited input

15 Ω

Fault detection time (RTD)

≤ 75 ms (typically 70 ms)

Fault detection time (for 3-wire and 4-wire)

≤ 2 000 ms

Thermocouples (TC)

 

 

Input type

 

 

  • B

IEC 60584‑1

  • E

IEC 60584‑1

  • J

IEC 60584‑1

  • K

IEC 60584‑1

  • L

DIN 43710

  • Lr

GOST 3044‑84

  • N

IEC 60584‑1

  • R

IEC 60584‑1

  • S

IEC 60584‑1

  • T

IEC 60584‑1

  • U

DIN 43710

  • W3

ASTM E988‑96

  • W5

ASTM E988‑96

  • LR

GOST 3044‑84

Cold junction compensation (CJC)

Constant, internal or external over Pt100 or Ni100 RTD

  • Temperature range internal CJC

-50 ... +100 °C (-58 ... +212 °F)

  • Connection external CJC

2-wire, 3-wire or 4-wire

  • External CJC, wire resistance per wire (for 3-wire and 4-wire connections)

50 Ω

  • Effect of the wire resistance (with 3-wire and 4-wire connections)

< 0.002 Ω/Ω

  • Input current external CJC

< 0.15 mA

  • Temperature range external CJC

‑50 ... +135 °C (‑58 ... +275 °F)

  • Cable, wire-wire capacity

Max. 50 nF

  • Total wire resistance

Max. 10 kΩ

  • Fault detection, programmable

None, short-circuited, defective, short-circuited or defective

Note

The short-circuited fault detection only applies to the CJC input.

  • Fault detection time (TC)

≤ 75 ms (typically 70 ms)

  • Fault detection time, external CJC (for 3-wire and 4-wire)

≤ 2 000 ms

Linear resistance

 

 

Input range

0 ... 100 kΩ

Minimum measuring span

25 Ω

Connection type

2-wire, 3-wire or 4-wire

Wire resistance per wire

Max. 50 Ω

Input current

< 0.15 mA

Effect of the wire resistance (with 3-wire and 4-wire connections)

< 0.002 Ω/Ω

Cable, wire-wire capacity

 

 

  • R > 400 Ω

Max. 30 nF

  • R ≤ 400 Ω

Max. 50 nF

Fault detection, programmable

None, defective

Potentiometers

 

 

Input range

10 ... 100 kΩ

Minimum measuring span

25 Ω

Connection type

3-wire, 4-wire or 5-wire

Wire resistance per wire

Max. 50 Ω

Input current

< 0.15 mA

Effect of the wire resistance (with 4-wire and 5-wire connections)

< 0.002 Ω/Ω

Cable, wire-wire capacity

 

 

  • R > 400 Ω

Max. 30 nF

  • R ≤ 400 Ω

Max. 50 nF

Fault detection, programmable

None, short-circuited, defective, short-circuited or defective

Note

When the configured potentiometer size is below the constant detection limit for short-circuited inputs, the detection of short circuits is disabled regardless of the configuration of the fault detection.

Detection limit for short-circuited input

15 Ω

Fault detection time, wiper arm (no short-circuit detection)

≤ 75 ms (typically 70 ms)

Fault detection time, element

≤ 2 000 ms

Fault detection time (for 4-wire and 5-wire)

≤ 2 000 ms

Voltage input

 

 

Measuring range

 

 

  • Unipolar

‑100 ... 1700 mV

  • Bipolar

‑800 ... +800 mV

Minimum measuring span

2.5 mV

Input resistance

10 MΩ

Cable, wire-wire capacity

 

 

  • Input range: ‑100 ... 1700 mV

Max. 30 nF

  • Input range: ‑20 ... 100 mV

Max. 50 nF

Fault detection, programmable

None, defective

Fault detection time

≤ 75 ms (typically 70 ms)

Output and HART communication

 

 

Normal range, programmable

3.8 ... 20.5 mA/20.5 ... 3.8 mA

Extended range (output limits), programmable

3.5 ... 23 mA/23 ... 3.5 mA

Programmable input/output limits

 

 

  • Fault current

Enable/disable

  • Fault current setting

3.5 ... 23 mA

Update time

10 ms

Load (with current output)

≤ (VSupply - 7.5)/0.023 Ω

Load stability

< 0.01% of measuring span/100 Ω
(measuring span = currently selected range)

Input fault detection, programmable
(detection of input short-circuits is ignored with TC and voltage inputs)

3.5 ... 23 mA

NAMUR NE43 Upscale

> 21 mA

NAMUR NE43 Downscale

< 3.6 mA

HART protocol versions

HART 7

Measuring accuracy

 

 

Input accuracy

See "Input accuracy" table

Output accuracy

See "Output accuracy" table

Operating conditions

 

 

Ambient temperature

‑50 ... +85 °C (‑58 ... +185 °F)

Ambient temperature for devices with functional safety

‑40 ... +80 °C (‑40 ... +176 °F)

Storage temperature

‑50 ... +85 °C (‑58 ... +185 °F)

Reference temperature for sensor calibration

24 °C ±1.0 °C (75.2 °F ±1.8 °F)

Relative humidity

< 99% (no condensation)

Degree of protection

 

 

  • Transmitter enclosure

IP20

  • Terminals

IP20

Structural design

 

 

Weight

122 g (0.27 lb)

Maximum core cross-section

2.5 mm² (AWG 13)

Tightening torque for clamping screws

0.5 ... 0.6 Nm

Vibrations

IEC 60068‑2‑6

  • 2 ... 25 Hz

± 1.6 mm (0.07 inches)

  • 25 ... 100 Hz

± 4 g

Certificates and approvals

 

 

Explosion protection ATEX/IECEx and others

 

 

Certificates3)

  • DEKRA 17ATEX0116 X
  • IECEx DEK 17.0054X
  • A5E43700604A-2018X

"Intrinsic safety ia/ib" type of protection

For use in Zone 0, 1, 2, 20, 21, 22

  • ATEX
  • II 1 G Ex ia IIC T6 ... T4 Ga
  • II 2(1) G Ex ib [ia Ga] IIC T6 ... T4 Gb
  • II 2 D Ex ia IIIC Db
  • I M1 Ex ia I Ma
  • IECEx and others
  • Ex ia IIC T6 ... T4 Ga
  • Ex ib [ia Ga] IIC T6 ... T4 Gb
  • Ex ia IIIC Db
  • Ex ia I Ma

"Intrinsic safety ic" type of protection

For use in Zones 2 and 22

  • ATEX
  • II 3 G Ex ic IIC T6…T4 Gc
  • II 3 D Ex ic IIIC Dc
  • IECEx and others
  • Ex ic IIC T6 ... T4 Gc
  • Ex ic IIIC Dc

"Non-sparking/increased safety nA/ec" type of protection

For use in Zones 2 and 22

  • ATEX
  • II 3 G Ex nA IIC T6…T4 Gc
  • II 3 G Ex ec IIC T6…T4 Gc
  • IECEx and others
  • Ex nA IIC T6 ... T4 Gc
  • Ex ec IIC T6 ... T4 Gc

Explosion protection CSA/FM for Canada and USA

 

 

Certificates

  • CSA 1861385
  • FM18CA0024
  • FM18US0046

"Intrinsic safety ia" type of protection

  • IS, CL I, Div 1, GP ABCD, T6 ... T4
  • Ex ia IIC T6 … T4 Ga, AEx ia IIC T6 … T4 Ga
    or
    Ex ib [ia Ga] IIC T6…T4 Gb, AEx ib [ia Ga] IIC T6…T4 Gb

"Non incendive field wiring NIFW" type of protection

NIFW, CL I, Div 2, GP ABCD T6 ... T4

"Non incendive NI" type of protection

  • NI, CL I, Div 2, GP ABCD T6...T4
  • Ex nA IIC T6 ... T4 Gc
  • AEx nA IIC T6 ... T4 Gc


1) Note that the minimum supply voltage must correspond to the value measured at the terminals of the SITRANS TR420. All external voltage drops must be taken into account.

2) Protect the device from overvoltage with the help of a suitable power supply or suitable overvoltage protection equipment.

3) Additional available certificates are listed on the internet at http://www.siemens.com/processinstrumentation/certificates

Measuring ranges/Minimum measuring span

RTD

Input type

Standard

Measuring range in °C (°F)

α0 in °C-1 (°F-1)

Minimum measuring span in °C (°F)

Pt10 ... 10000

IEC 60751

‑200 ... +850 (‑328 ... +1 562)

0.003851 (0.002139)

10 (50)

JIS C 1604‑8

‑200 ... +649 (‑328 ... +1 200)

0.003916 (0.002176)

10 (50)

GOST 6651_2009

‑200 ... +850 (‑328 ... +1 562)

0.003910 (0.002172)

10 (50)

Callendar-Van Dusen

‑200 ... +850 (‑328 ... +1 562)

-

10 (50)

Ni10 ... 10000

DIN 43760-1987

‑60 ... +250 (‑76 ... +482)

0.006180 (0.003433)

10 (50)

GOST 6651-2009/OIML R84:2003

‑60 ... +180 (‑76 ... +356)

0.006170 (0.003428)

10 (50)

Cu5 ... 1000

Edison Copper Winding No. 15

‑200 ... +260 (‑328 ... +500)

0.004270 (0.002372)

100 (212)

GOST 6651‑2009/OIML R84:2003

‑180 ... +200 (‑292 ... +392)

0.004280 (0.002378)

100 (212)

GOST 6651‑94

‑50 ... +200 (‑58 ... +392)

0.004260 (0.002367)

100 (212)



TC

Input type

Standard

Measuring range in °C (°F)

Minimum measuring span in °C (°F)

B

IEC 60584‑1

0 (85) ... 1 820 (32 (185) ... 3 308)

100 (212)

E

IEC 60584‑1

‑200 ... +1 000 (‑392 ... +1 832)

50 (122)

J

IEC 60584‑1

‑100 ... +1 200 (‑212 ... +2 192)

50 (122)

K

IEC 60584‑1

‑180 ... +1 372 (‑356 ... +2 502)

50 (122)

L

DIN 43710

‑200 ... +900 (‑392 ... +1 652)

50 (122)

Lr

GOST 3044‑84

‑200 ... +800 (‑392 ... +1 472)

50 (122)

N

IEC 60584‑1

‑180 ... +1 300 (‑356 ... +2 372)

50 (122)

R

IEC 60584‑1

‑50 ... +1 760 (‑122 ... +3 200)

100 (212)

S

IEC 60584‑1

‑50 ... +1 760 (‑122 ... +3 200)

100 (212)

T

IEC 60584‑1

‑200 ... +400 (‑392 ... +752)

50 (122)

U

DIN 43710

‑200 ... +600 (‑392 ... +1 112)

50 (122)

W3

ASTM E988‑96

0 ... 2 300 (32 ... 4 172)

100 (212)

W5

ASTM E988‑96

0 ... 2 300 (32 ... 4 172)

100 (212)

LR

GOST 3044‑84

‑200 ... +800 (‑392 ... +1472)

50 (122)



Input accuracy

Basic values

Input type

Basic accuracy

Temperature coefficient1)

RTD

 

 

 

 

Pt10

≤ ±0.8 °C (1.44 °F)

≤ ±0.020 °C/°C (°F/°F)

Pt20

≤ ±0.4 °C (0.72 °F)

≤ ±0.010 °C/°C (°F/°F)

Pt50

≤ ±0.16 °C (0.288 °F)

≤ ±0.004 °C/°C (°F/°F)

Pt100

≤ ±0.04 °C (0.072 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt200

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt500

Tmax. < 180 °C (356 °F) = ≤ ±0.08 °C (0.144 °F)

Tmax. > 180 °C (356 °F) = ≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt1000

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt2000

Tmax. < 300 °C (572 °F) = ≤ ±0.08 °C (0.144 °F)

Tmax. > 300 °C (572 °F) = ≤ ±0.4 °C (0.72 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt10000

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Pt x

Largest tolerance of neighboring points

Largest temperature coefficient of neighboring points

Ni10

≤ ±1.6 °C (2.88 °F)

≤ ±0.020 °C/°C (°F/°F)

Ni20

≤ ±0.8 °C (1.44 °F)

≤ ±0.010 °C/°C (°F/°F)

Ni50

≤ ±0.32 °C (0.576 °F)

≤ ±0.004 °C/°C (°F/°F)

Ni100

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni120

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni200

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni500

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni1000

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni2000

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni10000

≤ ±0.32 °C (0.576 °F)

≤ ±0.002 °C/°C (°F/°F)

Ni x

Largest tolerance of neighboring points

Largest temperature coefficient of neighboring points

Cu5

≤ ±1.6 °C (2.88 °F)

≤ ±0.040 °C/°C (°F/°F)

Cu10

≤ ±0.8 °C (1.44 °F)

≤ ±0.020 °C/°C (°F/°F)

Cu20

≤ ±0.4 °C (0.72 °F)

≤ ±0.010 °C/°C (°F/°F)

Cu50

≤ ±0.16 °C (0.288 °F)

≤ ±0.004 °C/°C (°F/°F)

Cu100

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)

Cu200

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)

Cu500

≤ ±0.16 °C (0.288 °F)

≤ ±0.002 °C/°C (°F/°F)

Cu1000

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)

Cu x

Largest tolerance of neighboring points

Largest temperature coefficient of neighboring points

Linear resistance

 

 

 

 

0 ... 400 Ω

≤ ±40 mΩ

≤ ±2 mΩ/°C (1.11 mΩ/°F)

0 ... 100 kΩ

≤ ±4 Ω

≤ ±0.2 Ω/°C (0.11 Ω/°F)

Potentiometers

 

 

 

 

0 ... 100%

< 0.05%

< ± 0.005%

Voltage input

 

 

 

 

mV: -20 ... 100 mV

≤ ±5 μV

≤ ±0.2 μV/°C (0.11 μV/°F)

mV: -100 ... 1700 mV

≤ ±0.1 mV

≤ ±36 μV/°C (20 μV/°F)

mV: ± 800 mV

≤ ±0.1 mV

≤ ±32 μV/°C (17.8 μV/°F)

TC

 

 

 

 

E

≤ ±0.2 °C (0.36 °F)

≤ ±0.025 °C/°C (°F/°F)

J

≤ ±0.25 °C (0.45 °F)

≤ ±0.025 °C/°C (°F/°F)

K

≤ ±0.25 °C (0.45 °F)

≤ ±0.025 °C/°C (°F/°F)

L

≤ ±0.35 °C (0.63 °F)

≤ ±0.025 °C/°C (°F/°F)

N

≤ ±0.4 °C (0.72 °F)

≤ ±0.025 °C/°C (°F/°F)

T

≤ ±0.25 °C (0.45 °F)

≤ ±0.025 °C/°C (°F/°F)

U

< 0 °C (32 °F) ≤ ±0.8 °C (1.44 °F)

≥ 0 °C (32 °F) ≤ ±0.4 °C (0.72 °F)

≤ ±0.025 °C/°C (°F/°F)

Lr

≤ ±0.2 °C (0.36 °F)

≤ ±0.1 °C/°C (°F/°F)

R

< 200 °C (392 °F) ≤ ±0.5 °C (0.9 °F)

≥ 200 °C (392 °F) ≤ ±1 °C (1.8 °F)

≤ ±0.1 °C/°C (°F/°F)

S

< 200 °C (392 °F) ≤ ±0.5 °C (0.9 °F)

≥ 200 °C (392 °F) ≤ ±1 °C (1.8 °F)

≤ ±0.1 °C/°C (°F/°F)

W3

≤ ±0.6 °C (1.08 °F)

≤ ±0.1 °C/°C (°F/°F)

W5

≤ ±0.4 °C (0.72 °F)

≤ ±0.1 °C/°C (°F/°F)

B2)

≤ ±1 °C (1.8 °F)

≤ ±0.1 °C/°C (°F/°F)

B3)

≤ ±3 °C (5.4 °F)

≤ ±0.1 °C/°C (°F/°F)

B4)

≤ ±8 °C (14.4 °F)

≤ ±0.8 °C/°C (°F/°F)

B5)

Not specified

Not specified

CJC (internal)

< ±0.5 °C (0.9 °F)

Included in basic accuracy

CJC (external)

≤ ±0.08 °C (0.144 °F)

≤ ±0.002 °C/°C (°F/°F)



1) Temperature coefficients correspond to the specified values or 0.002% of the input span, depending on which value is greater.

2) Accuracy of the specification range > 400 °C (752 °F)

3) Accuracy of the specification range > 160 °C (320 °F) < 400 °C (752 °F)

4) Accuracy of the specification range > 85 °C (185 °F) < 160 °C (320 °F)

5) Accuracy of the specification range < 85 °C (185 °F)

Output accuracy

Output type

Basic accuracy

Temperature coefficient

Average value measurement

Average of accuracy of input 1 and input 2

Average of temperature coefficient of input 1 and input 2

Differential measurement

Sum of accuracy of input 1 and input 2

Sum of temperature coefficient of input 1 and input 2

Analog output

≤ ±1.6 μA (0.01% of the full output span)

≤ ±0.48 μA/K (≤ ±0.003% of the full output span/K)

Dimensional drawings

SITRANS TR420, dimensions in mm (inch)

 

Circuit diagrams

Connections

SITRANS TR420, connector assignment

Output and test connection

SITRANS TR420, output connection assignment

Input connection

SITRANS TR420, input connection assignment

 

1 đánh giá SITRANS TR420 (HART, UNIVERSAL) Overview

5

Chọn đánh giá của bạn
Zalo Facebook

Liên Hệ

Công ty CP Cơ điện tử Minh Khang - Đại diện ủy quyền của hãng SIEMENS tại Việt Nam - Nhà tích hợp hệ thống tự động hóa toàn diện