Siemens SITRANS TH100 (Pt100) Temperature Transmitters

The Siemens Sitrans TH100 is designed for economic used. The Siemens Sitrans TH100 offers economic plant operation and reliable measurements. The Siemens Sitrans TH100 is an ideal substitute for over aged analogue PT100 transmitters.

SITRANS TH100 is rigid designed for economic use. For example with saving of the galvanic insulation, which is not need for PT100. Therefore the TH100 offers economic plant operation and reliable measurements. It is an ideal substitute for over aged analogue PT100 transmitters. Setup is quick and easy with the transmitter-modem and SIPROM T. This configuration tool can be downloaded for free.

SITRANS TH100

The SITRANS TH100 dispenses with electrical isolation and universal sensor connection to provide a low-cost alternative for Pt100 measurements.

For the parameterization, the SIPROM T software is used in combination with the modem for SITRANS TH100/TH200.

Its extremely compact design makes the SITRANS TH100 ideal for the retrofitting of measuring points or for the use of analog transmitters.

The transmitter is available as a non-Ex version as well as for use in potentially explosive atmospheres.

SITRANS TH100 Benefits

  • Two-wire transmitter
  • Assembly in connection head type B (DIN 43729) or larger, or on a standard DIN rail
  • Can be programmed, which means that the sensor connection, measuring range, etc. can also be programmed
  • Intrinsically-safe version for use in potentially explosive areas
  • 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
  • Explosion protected executions for US, Canada and Europe
  • Slim design, ideal for upgrade of installed PT100 probes with a 4-..20mA signal
  • Rugged design, fully potted electronic

SITRANS TH100 Application

The SITRANS TH100 transmitter can be used for temperature measurement with resistance thermometers in all industries. Its compact size means that it can be installed in connection heads of type B (DIN 43729) or larger.

The output signal is a load-independent direct current of 4 to 20 mA which is proportional to the temperature.

Parameterization is implemented over the PC using the parameterization software SIPROM T and the modem for SITRANS TH100/TH200. If you already have a “Modem for SITRANS TK” (article number 7NG3190-6KB), you can continue to use this for parameterization of the SITRANS TH100.

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

Function

Mode of operation

The measured signal supplied by a Pt100 resistance thermometer (2, 3 or 4-wire system) is amplified in the input stage. The voltage, which is proportional to the input variable, is then converted into digital signals by a multiplexer in an analog/digital converter. They are converted in the microcontroller in accordance with the sensor characteristics and further parameters (measuring range, damping, ambient temperature etc.).

The signal prepared in this way is converted in a digital/analog converter into a load-independent direct current of 4 to 20 mA.

An EMC filter protects the input and output circuits against electromagnetic interferences.

SITRANS TH100, function diagram

Dimensional drawings

SITRANS TH100, dimensions in mm (inch)

SITRANS TH100, mounting of transmitter on DIN rail

DIN rail adaptor, dimensions in mm (inch)

Circuit diagrams

SITRANS TH100, sensor connection assignment

SITRANS TH100

Technical specifications

Input

Resistance thermometer

Measured variable

Temperature

Sensor type

Pt100 according to IEC 60751

Characteristic curve

Linear to temperature

Type of connection

2-, 3- or 4-wire system

Resolution

14 bit

Measuring accuracy

  • Span <250 °C (450 °F)

< 0.25 °C (0.45 °F)

  • Span >250 °C (450 °F)

< 0.1 % of measuring span

Repeatability

< 0.1 °C (0.18 °F)

Measuring current

approx. 0.4 mA

Measuring cycle

< 0.7 s

Measuring range

-200 … +850 °C (-328 … +1562 °F)

Measuring span

25 … 1050 °C (77 … 1922 °F)

Unit

°C or °F

Offset

Programmable:
-100 … +100 °C (-180 … +180 °F)

Line resistance

Max. 20 Ω (total from feeder and return conductor)

Noise rejection

50 and 60 Hz

Output

Output signal

4 … 20 mA, two-wire

Auxiliary power

8.5 … 36 V DC (30 V with Ex ia and ib; 32 V with Ex nL/ic; 35 V with Ex nA)

Max. load

(Uaux – 8.5 V)/0.023 A

Overrange

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

Error signal (following sensor fault) (conforming to NE43)

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

Damping time

0…30 s (default value: 0 s)

Protection

Against reverse polarity

Resolution

12 bit

Accuracy at 23 °C (73.4 °F)

< 0.1 % of measuring span

Temperature effect

< 0.1 %/10 °C (0.1 %/18 °F)

Effect of auxiliary power

< 0.01 % of span/V

Effect of load impedance

< 0.025 % of max. span/100 Ω

Long-term drift

  • < 0.025 % of the max. span in the first month
  • < 0.035 % of the max. span after one year
  • < 0.05 % of the max. span after 5 years

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 NAMUR NE21

Design

Weight

50 g

Dimensions

See dimensional drawing

Material

Molded plastic

Cross-section of cables

Max. 2.5 mm2 (AWG 13)

Degree of protection according to IEC 60529

  • Enclosure

IP40

  • Terminals

IP00

Certificates and approvals

Explosion protection ATEX

EC type-examination certificate

PTB 05 ATEX 2049X

  • “Intrinsic gas safety” type of protection

II 1 G Ex ia IIC T6/T4
II (1) 2 G Ex ib [ia Ga] IIC T6/T4 Gb
II (1) 3 G Ex ic [ia Ga] IIC T6/T4 Gc
II 3 G Ex ic IIC T6/T4 Gc

  • “Non-sparking” type of protection

II 3 G Ex nA IIC T6/T4 Gc
II 3 G Ex nA [ic] IIC T6/T4 Gc

  • “Intrinsic dust safety” type of protection

II 1 D Ex ia IIIC T115 °C Da

Explosion protection: FM for USA

  • FM approval

FM 3024169

  • Degrees of protection

IS / Cl I, II, III / Div 1 / GP ABCDEFG T6, T5, T4
Cl I / ZN 0 / AEx ia IIC T6, T5, T4
NI / Cl I / Div 2 / GP ABCDFG T6, T5, T4
NI / Cl I / ZN 2 / IIC T6, T5, T4

Explosion protection to FM for Canada (cFMUS)

  • FM approval

FM 3024169C

  • Degrees of protection

IS / Cl I, II, III / Div 1/ GP ABCDEFG T6, T5, T4
NI / Cl I / DIV 2 / GP ABCD T6, T5, T4
NIFW / Cl I, II, III / DIV 2 / GP ABCDFG T6, T5, T4
DIP / Cl II, III / Div 2 / GP FG T6, T5, T4
Cl I / ZN 0 / Ex ia IIC T6, T5, T4
Cl I / ZN 2 / Ex nA nL IIC T6, T5, T4

Other certificates

EAC Ex(GOST), NEPSI

Software requirements for SIPROM T

PC operating system

Windows ME, 2000, XP, Win 7 and Win 8; in connection with RS 232 modem, also Windows 95, 98 and 98SE

Factory setting:

  • Pt100 (IEC 751) with 3-wire system
  • Measuring range: 0 … 100 °C (32 … 212 °F)
  • Error signal in the event of sensor breakage: 22.8 mA
  • Sensor offset: 0 °C (0 °F)
  • Damping 0.0 s

SITRANS TH100 (Pt100) Ordering data

Product No. / Product DescriptionListprice / Your price
7NG3211-0….
Temperature transmitter SITRANS TH100 for PT100 for installation in connection head Type B (DIN 43729), two-wire system, 4…20 mA, programmable, without electrical isolation
7NG3211-0AN00
Temperature transmitter SITRANS TH100 for PT100 for installation in connection head Type B (DIN 43729), two-wire system, 4…20 mA, programmable, without electrical isolation With explosion protection Intrinsic safety and type of protection and zone 2 to ATEX . .
7NG3211-0BN00
Temperature transmitter SITRANS TH100 for PT100 for installation in connection head Type B (DIN 43729), two-wire system, 4…20 mA, programmable, without electrical isolation With explosion protection Intrinsic safety and for type of protection and zone 2, to FM (CFMUS) . .
7NG3211-0NN00
Temperature transmitter SITRANS TH100 for PT100 for installation in connection head Type B (DIN 43729), two-wire system, 4…20 mA, programmable, without electrical isolation Without explosion protection . .