Temperature transmitters
Overview
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
2/221
Overview
Robust and durable HART - the universal SITRANS TR300 trans
mitter
•
2-wire device for 4 to 20mA, HART
•
Device for rail mounting
•
Universal input for virtually any type of temperature sensor
•
Configurable over HART
Benefits
•
Compact design
•
Galvanic isolation
•
Test sockets for multimeters
•
Diagnostics LED (green/red)
•
Sensor monitoring open circuits and short-circuits
•
Self-monitoring
•
Configuration status stored in EEPROM
•
Expanded diagnostic functions, such as slave pointer, operating
hours counter, etc.
•
Special characteristic
•
Electromagnetic compatibility to EN 61326 and NE21
•
SIL2 (with order note C20), SIL2/3 (with C23)
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 thermometer (2, 3, 4-wire connection)
•
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 dia
gnostics LED displays a green light. In the case of a sensor break, 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.
Sensor
TC/RTD
U
aux
Auxiliary power supply
I
out
Output current
Test Test terminals for temporary
connection of an amperemeter
4 Electrical isolation
5 Microcontroller, primary circuit
6 Digital-analog converter
7 LED
1 Sensor such as resistance thermometer,
thermocouple, resistance-based,
sensor, mV sensor
2 Analog-digital converter
3 Microcontroller, secondary circuit
A
D
D
A
µC1
µC2
Test
4 ... 20 mA U
aux
, I
out
SITRANS TR200/TR300
1
7
6
3
4
5
2
SITRANS TR300 function diagram
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Temperature Measurement
© Siemens AG 2023
Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Selection and ordering data
Article No.
SITRANSTR300 rail transmitter
Installation on DIN rail
2-wire system, 4…20mA, HART, with galvanic
isolation
• Without explosion protection
7NG3033-0JN00
• With explosion protection according to ATEX
7NG3033-1JN00
Options Order code
Add "-Z" to article number, specify order code
and, if applicable, plain text
With test report (5 measuring points) C11
Functional safetySIL2 C20
Functional safetySIL2/3 C23
Customer-specific programming
Measuring range to be set
Specify in plain text (max. 5 digits):
Y01:...to...°C,°F
Y01
1)
Measuring point number (TAG) max. 8 characters Y17
2)
Measuring point description, max. 16 characters Y23
2)
Measuring point message, max. 32 characters Y24
2)
Text on front plate, max. 16 characters Y29
2)3)
Pt100 (IEC) 2-wire, R
L
=0Ω U02
4)
Pt100 (IEC) 3-wire U03
4)
Pt100 (IEC) 4-wire U04
4)
TypeB thermocouple U20
4)5)
TypeC thermocouple (W5) U21
4)5)
Type D thermocouple (W3) U22
4)5)
TypeE thermocouple U23
4)5)
TypeJ thermocouple U24
4)5)
Type K thermocouple U25
4)5)
TypeL thermocouple U26
4)5)
TypeN thermocouple U27
4)5)
TypeR thermocouple U28
4)5)
TypeS thermocouple U29
4)5)
TypeT thermocouple U30
4)5)
TypeU thermocouple U31
4)5)
For TC: Cold junction compensation: external
(Pt100, 3-wire)
U41
For TC: Cold junction compensation:
external with fixed value: Specify in plain text
Y50
Enter special deviating customer-specific setting
in plain text
Y09
6)
Fault current 3.6mA (instead of 22.8mA) U36
2)
1)
For customer-specific programming for RTD and TC, the start value and the
end value of the required measuring span must be specified here.
2)
For this selection, Y01 or Y09 must also be selected.
3)
Text on front plate is not saved in the device.
4)
For this selection, Y01 must also be selected.
5)
Internal cold junction compensation is selected as the default for TC.
6)
For customer-specific programming for mV and ohm, the start value and
the end value of the required measuring span and the unit must be
entered here.
Selection and ordering data (continued)
Accessories
Article No.
Other accessories for assembly, connection and
transmitter configuration, see page 2/198.
Modem
HART modem with USB interface
7MF4997-1DB
SIMATICPDM operating software See section 8
For supply units, see Catalog FI01 section "Supplementary compon
ents"
Ordering example 1:
7NG3033-0JN00-Z Y01+Y17+Y29+U03
Y01: -10...+100°C
Y17: TICA123
Y29: TICA123
Ordering example 2:
7NG3033-0JN00-ZY01+Y17+Y23+Y29+U25
Y01: -10...+100°C
Y17: TICA123
Y23: TICA123HEAT
Y29: TICA123HEAT
Factory setting:
•
Pt100 (IEC751); 3-wire connection
•
Measuring range: 0...100°C (32...212°F)
•
Fault current in the event of sensor breakage: 22.8mA
•
Sensor offset: 0°C (0°F)
•
Damping 0.0s
Siemens FI 01 · 2023
Temperature Measurement
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Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Technical specifications
SITRANS TR300 (4...20mA, HART, universal)
Input
Resistance thermometer
Measured variable Temperature
Sensor type
•
According to IEC60751 Pt25 … Pt1000
•
According to JIS C 1604; a=0.00392 K
-1
Pt25 … Pt1000
•
According to IEC 60751 Ni25 … Ni1000
•
Special type Via special characteristic curve (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 connection
•
Averaging 2 identical resistance thermometers in
2-wire connection for generation of average
temperature
•
Differentiation 2 identical resistance thermometers (RTD) in
2-wire connection (RTD 1 – RTD 2 or RTD 2 –
RTD 1)
Connection
•
2-wire connection Wire resistance can be configured ≤100Ω
(loop resistance)
•
3-wire connection No trim necessary
•
4-wire connection No trim necessary
Sensor current ≤0.45mA
Response time T
63
≤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
curve
Resistance-based sensor
Measured variable Ohmic resistance
Sensor type Resistance-based, potentiometers
Units Ω
Connection
•
Standard connection 1 resistance-based sensor (R) in 2-wire,
3-wire or 4-wire connection
•
Averaging 2 resistance-based sensors in 2-wire
connection for averaging
•
Differentiation 2 resistance thermometers in 2-wire
connection
(R1–R2 or R2–R1)
Connection
•
2-wire connection Wire resistance can be configured ≤100Ω
(loop resistance)
•
3-wire connection No trim necessary
•
4-wire connection No trim necessary
Sensor current ≤0.45mA
Response time T
63
≤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
curve
Thermocouples
Siemens FI 01 · 2023
Temperature Measurement
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Temperature transmitters
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Technical specifications (continued)
SITRANS TR300 (4...20mA, HART, universal)
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 T
63
≤250ms for 1sensor with break monitoring
Break monitoring Can be switched off
Cold junction compensation
•
Internal With integrated Pt100 resistance
thermometer
•
External With external Pt100 IEC 60751 (2-wire or
3-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
curve
mV sensor
Measured variable DC voltage
Sensor type DC voltage source (DC voltage source
possible over externally connected
resistance)
Units mV
Response time T
63
≤250ms for 1sensor with break monitoring
Break monitoring Can be switched off
Measuring range Assignable max.-100…1100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 curve
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 (U
aux
–11V)/0.023A
Overrange 3.6...23mA, continuously adjustable
(default range: 3.84mA...20.5mA)
Error signal (e.g. in case of sensor breakage)
(conforming to NE43)
3.6...23mA, continuously 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
Siemens FI 01 · 2023
Temperature Measurement
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Temperature transmitters
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Technical specifications (continued)
SITRANS TR300 (4...20mA, HART, universal)
Galvanic isolation Input against output 2.12kV DC (1.5kV
rms
AC)
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
Operating 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
Structural 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
ATEX explosion protection
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 protec
tion
II 3 G Ex nA IIC T6/T4
Other certificates NEPSI
Factory setting:
•
Pt100 (IEC 751); 3-wire connection
•
Measuring range: 0...100°C (32...212°F)
•
Fault current: 22.8mA
•
Sensor offset: 0°C (0°F)
•
Damping 0.0s
Siemens FI 01 · 2023
Temperature Measurement
© Siemens AG 2023
Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Technical specifications (continued)
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...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) 2
1)
(3.6)
1)
Type C (W5) 0...2300 (32...4172) 100 (180) 2 (3.6)
Type D (W3) 0...2300 (32...4172) 100 (180) 1
2)
(1.8)
2)
Type E -200...+1000 (‑328...+1832) 50 (90) 1 (1.8)
Type J -200...+1200 (‑328...+2192) 50 (90) 1 (1.8)
Type K -200...+1370 (‑328...+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.
Siemens FI 01 · 2023
Temperature Measurement
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Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Technical specifications (continued)
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).
Dimensional drawings
5 6 7 85 6 7 85 6 7 8
1
A
2 3
+UB -TEST
+ -
4
5 6
S2
S1
7 8
5
S1 S2
6
++
7 8
+
5 6 7 8
+
5 6 7 8
+
5 6
+
7 8
114 (4.49)
99 (3.9)
22,5 (0.89)
SIEMENS
SITRANS
TR300
5 6
7
8
1 2
TEST 4..20mA
3
4
s
Connection Plan
4..20mA loop
& test
2x RTD or R
2W sensor
2x TC sensor
with int./fixed
CJC
RTD or R
2W sensor
RTD or R
3W sensor
RTD or R
4W sensor
Made in Croatia
TC sens. with
int./fixed CJC
U sensor
TC sensor
with external
2W RTD CJC
TC sensor
with external
3W RTD CJC
SITRANS TR300, dimensions in mm (inch)
Siemens FI 01 · 2023
Temperature Measurement
© Siemens AG 2023
Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Circuit diagrams
1 (+) and 2 (-) Test terminals (Test) for measurement of the output
current with a multimeter
3 (+) and 4 (-) Power supply U
aux
, Output current I
out
5, 6, 7 and 8 Sensor connection, see schematics
Connections
SIEMENS
SITRANS
TR300
5 6
7
8
1 2
TEST 4..20mA
3
4
SITRANS TR300, connector assignment
Siemens FI 01 · 2023
Temperature Measurement
© Siemens AG 2023
Temperature transmitters
Rail transmitters / SITRANS TR300 (4 to 20 mA, HART, universal)
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Circuit diagrams (continued)
+
-
+
-
Current measurement
Voltage measurement
Test terminals
Resistance thermometer Resistance
Thermocouple
Power supply/
4 ... 20 mA (U
aux
)
Cold junction compensation with
external Pt100 in 3-wire system
Cold junction compensation with
external Pt100 in 2-wire system
1)
Cold junction compensation
internal/fixed value
2-wire system
1)
2-wire system
1)
1)
Programmable line resistance for the purpose of correction.
Generation of average value / difference
with internal cold junction compensation
Generation of average
value/difference
1)
4-wire system
3-wire system
Generation of average
value/difference
1)
4-wire system
3-wire system
+
-
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
5 6 7 8
1 2 3 4
1 2 3 4
5 6 7 8
+
-
+
-
A
RTD
R
RTD
R
RTD
RTD1
RTD2
R
TC
TC
RTD
TC
RTD
+
-
+
-
+
-
TC1
TC2
U
aux
+
-
R
I
U
R2
R1
SITRANS TR300, sensor connection assignment
Siemens FI 01 · 2023
Temperature Measurement
© Siemens AG 2023