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SITRANS T measuring instruments for temperature
SITRANS T transmitters for mounting in sensor head
SITRANS TK/TK-H Two-wire system

Overview

The signal supplied by a resistance-based sensor (two, three or four-wire circuit) or a thermocouple element is amplified in the input stage. The voltage proportional to the input variable is then converted into digital signals in the analog/digital converter (1). These signals are forwarded electrically isolated (2) to the microprocessor (3). They are converted there in accordance with the sensor characteristic and further parameters (damping, ambient temperature etc.). The signal prepared in this way is converted in the digital/analog converter (4) into a load-independent direct current (4 to 20 mA). The power supply (5) is located in the output signal circuit. The SITRANS TK-H transmitter is parameterized and operated using a PC (6) connected to the two-wire line via the interface module for SIPROM software (HART modem, 7). A hand-held communicator can also be used for this purpose. The signals needed for communication in conformity with the HART r protocol V 5.7 are superimposed on the output current in accordance with the frequency shift keying (Frequency Shift Keying, FSK) method.
The smart solution The transmitter with the same capabilities as a SITRANS TK and a standardized HART interface. This universal transmitter integrates your temperature measurement in the TIA concept (Totally Integrated Automation). This makes central engineering possible, bringing you time and cost benefits. SIMATIC PDM or another HART programming tool can be used for the configuration. The transmitter provides electrical isolation and enables the connection of resistance thermometers, resistance-based sensors, thermocouples and voltage-based sensors.

Technical specifications

Input Resistance thermometer Measured variable Sensor type Acc. to DIN IEC 751 Acc. to JIS C 1604 Acc. to DIN IEC 751 Voltage measurement Type of connection Resistance-based sensors Measured variable Measuring range limits Voltage measurement Type of connection Thermocouple elements Measured variable Sensor type Acc. to DIN IEC 584-1 Acc. to DIN Acc. to DIN 4937 Acc. to ASTM 988 Voltage measurement Cold junction compensation mV Sensor Measured variable Measuring range limits Voltage measurement Overload capacity of the input Input resistance Output DC voltage 1100 mV Voltage-linear or programmable -0.5. +35 V DC 1 M 4 to 20 mA, 2-wire Acc. to HART V 5.x See "Digital measuring errors" < 0.1% of span < 0.5 K (0.9 F) 0.01%/C (0.0056%/F), typ. 0.003%/C (0.0016%/F) < 0.005% of span/V < 0.03% in first month Temperature Type B, E, J, K, R, S, T Type L, U Type N Type C, D Temperature-linear Internal, external with Pt100 or external with a fixed value Ohmic impedance 2200 Resistance-linear or programmable (TK) Two, three or four-wire system Temperature Pt25. Pt1000 Pt25. Pt1000 Ni25. Ni1000 Cu25. Cu1000 Temperature-linear Two, three or four-wire system

Application

SITRANS TK/TK-H temperature transmitters with "Non incendive" type protection can be mounted within potentially explosive atmospheres (zone 2). SITRANS TK/TK-H temperature transmitters with "Flame-proof enclosure" type protection can be mounted within potentially explosive atmospheres (zone 1).

Function

The SITRANS TK/TK-H temperature transmitter converts the signals from resistance thermometers, resistance-based sensors, thermocouples or voltage sensors into a load-independent direct current corresponding to the sensor characteristic. As a result of its compact design, the transmitter fits in the sensor head type B (DIN 43 729). The communication capability via the HART protocol V 5.x of the SITRANS TK-H permits parameterization using a PC or HART communicator (hand-held communicator). Parameterization is carried out using a PC for the programmable SITRANS TK-L. Mode of operation
Sensor TC RTD A D SITRANS TK-H 3 mP D 4 A 7 Analog-to-digital converter Electrical isolation Microprocessor Digital-to-analog converter Power supply PC/laptop HART modem Power supply 5 Load HART modem
Output signal Communication for SITRANS TK-H Measuring accuracy Digital measuring errors Error in the analog output Error in the internal cold junction Temperature drift Influence of the power supply on the span and zero point Long-term drift

Siemens FI 01 2006

Technical specifications (continued)

Rated conditions Ambient conditions Ambient temperature Relative humidity Electromagnetic compatibility Interference immunity Emitted interference Design Weight Dimensions Material Power supply For SITRANS TK For SITRANS TK-H Electrical isolation Test voltage Insulation Certificate and approvals Explosion protection ATEX "Intrinsic. safe" type of protection - EC-Type Examination Certificate for TK and TK-H Ex tested for zone 2n - Conformity statement Explosion protection to FM Identification (IS, I, NI) II 1 G EEx ia IIC T5/T6 DEMKO 03 ATEX 134603X 6.5. 35 V DC (30 V for EEx ia) 8. 35 V DC (30 V for EEx ia) Between input and output U eff = 3.75 kV, 50 Hz, 1 min 500 V AC 50 g (0.11 lb) see "Dimension drawings" Moulded plastic Acc. to EN Acc. to EN 50 081-2 -40. +85 C (-40. 185 F) < 98%, with condensation
Digital measuring errors Resistance thermometer
Input Measured range Min. measured span C (F) C (F) -200. + (18) (-328. +1562) -200. + (18) (-328. +662) -50. + (18) (-58. +482) -50. + (18) (-58. +392) Digital accuracy C (F) 0.1 (0.18) 0.1 (0.18) 0.1 (0.18) 0.1 (0.18)
Pt25. Pt500 Pt501. Pt1000 IEC Ni 25. Ni1000 Cu25. Cu1000

Resistance-based sensors

Input Measured range Resistance Resistance 0. 390 0. 2200 Min. measured span Digital accuracy 0.05 0.25

Thermocouple elements

Input Measured range C (F) +500. +1820 (+932. +3308) 0. +2300 (+32. +4172) 0. +2300 (+32. +4172) -250. +900 (-418. +1652) -210. +1200 (-346. +2192) -230. +1370 (-382. +2498) -200. +900 (-328. +1652) -200. +1300 (-328. +2372) 0. +1750 (+32. +3182) 0. +1750 (+32. +3182) -220. +400 (-364. +752) -200. +600 (-328. +1112) Min. measured span C (F) 50 (90) 100 (180) 100 (180) 50 (90) 50 (90) 50 (90) 50 (90) 50 (90) 100 (180) 100 (180) 40 (7.2) 50 (90) Digital accuracy C (F) 2 (3.6) 2 (3.6) 2 (3.6) 1 (1.8) 1 (1.8) 1 (1.8) 1 (1.8) 1 (1.8) 2 (3.6) 2 (3.6) 1 (1.8) 1 (1.8)
Type B II 3 G EEx nA IIC T5/T6 DEMKO 03 ATEX 134604X Certificate of Compliance 3017742 IS / I / 1 / ABCDEFG / T5 Ta = 85 C (185 F), T6 Ta = 50 C (112 F) I / 0 / AEx ia / IIC / T5 Ta = 85 C (185 F), T6 Ta = 50 C (112 F) NI / I / 2 / ABCD / T5 Ta = 85 C (185 F), T6 Ta = 50 C (112 F) nach control drawing A5E00226012B U i = 30 V, Ii = 100 mA, Pi = 0,75 W, Ci =5 nF, Li = 15 H Type C Type D Type E Type J Type K Type L Type N Type R Type S Type T Type U CPU of type 486 upwards, compatible with industrial standard 3.5" diskette drive Hard disk with 5 MB vacant space min. 4 MB RAM VGA graphics adapter (or compatible) with at least 16 colors One vacant serial port Mouse or compatible pointing device and printer (recommended) MS-DOS V 5.0 upwards, MS-Windows V 3.1 upwards see Chapter 9

Entity parameters

Hardware and software requirements for the parameterization software SIPROM TK for SITRANS TK Personal computer

mV Sensor

Input Measured range mV mV Sensor mV Sensor -10. +70 -100. +1100 Min. measured span mV Digital accuracy V 40 400
PC operating system SIMATIC PDM for SITRANS TK-H
Factory setting: Pt100 (IEC 751) with three-wire circuit Measuring range: 0. 100 C (32. 212 F) Output with sensor breakage: 23 mA
Selection and ordering data Order No.

Mounting on DIN rail

Temperature transmitter SITRANS TK for installation in sensor head type B (DIN 43729); two-wire system 4. 20 mA; with electrical isolation without explosion protection } 7NG3120-1JN01 with explosion protection Ex n for zone 2 } 7NG3121-1JN01 with explosion protection ATEX (EEx ia) and } 7NG3122-1JN01 FM (IS, I, NI) Temperature transmitter SITRANS TK-H for installation in sensor head type B (DIN 43729); two-wire system 4. 20 mA; capable of communication according to HART V 5.x with electrical isolation without explosion protection } 7NG3120-2JN01 with explosion protection Ex n for zone 2 } 7NG3121-2JN01 with explosion protection ATEX (EEx ia) and } 7NG3122-2JN01 FM (IS, I, NI) Further designs Please add "-Z" to Order No. and specify Order code(s) and plain text. Customer-specific setting of operating data Test protocol (5 measuring points) Accessories SIPROM TK parameterization software for SITRANS TK, German/English/French Modem for SITRANS TK Order code
Mounting of transmitter on DIN rail, schematic diagram
14 (0.55) 50,5 (1.99) 33 (1.30)
Y01 C11 Order No. } 7NG3190-8KB } 7NG3190-6KB

59,6 (2.35)

Instruction Manual for SITRANS TK/TK-H } A5E00226012 German/English (not included in delivery of the device) DIN rail adaptor } 7NG3092-8KA for head mounted transmitters (set of 5 pcs.) SIMATIC PDM parameterization software also for SITRANS TK-H HART modem with RS232 interface with USB interface } 7MF4997-1DA
DIN rail adaptor, dimensions in mm (inch)

see Chapter 9

Schematics

} 7MF4997-1DB

} Available ex stock. D) Subject to export regulations AL:N, ECCN: EAR99H. Power supply units see "SITRANS I supply units and input isolators".

Dimensional drawings

44 (1.73)

1, 2 UH, IA 3. 6 Sensor

Pin assignment

33 (1.30)

SITRANS TK/TK-H, dimensions in mm (inches) Siemens FI 01 2006

24 (0.95)

Potentiometer Resistance Current measurment

No compensation1)

Voltage measurement
R Dreileiter-Kompensation fr bertragungswiderstand 2)
Three-wire line compensation
Four-wire compensation for line and transfer resistance 2)
Four-wire line compensation

Resistance thermometer

Thermocouple

1 No line compensation )

Internal cold junction compensation (CJC)
External CJC-compensation 1 No line compensation ) Note: Line resistance (per wire in the case of three- and four-wire connections) T > 600 C (> 1112 F): max. 10 W T < 600 C (> 1112 F): max. 30 W ) Line resistance for compensation is programmable. 2 ) Resistance between start of resistance and sliding contact.

RTD RTD

Sensor connection assignment
External CJC-compensation Three-wire line compensation