SITRANS TH320 and TH420 combine perfect measurement and intelligence at any temperature and condition. Real reliability is guaranteed, for example, by the dual sensor input of the TH420 incl. 4-wire sensor connection and hot backup function. In case of a sensor failure, the transmitter automatically switches to the second sensor, and the values continue to be recorded seamlessly and without loss
The SIEMENS SITRANS TH320/420 temperature transmitter is designed to support all common resistance thermometers and thermocouples. It also evaluates resistance and millivolt signals. Setup is quick and easy with the SIMATIC PDM or the Handheld Communicator
SITRANS TH420 PA enhanced with Profibus PA
High availability and measuring accuracy. Easy commissioning with the SIMATIC CFU. Effective preventive maintenance. These are just a few examples of the rich functionality of these transmitters.
High availability during measurement by hot backup function (SITRANS TH420)
High reliability and long-term stability – sensor trim (Callendar-van-Dusen) and sensor drift detection (SITRANS TH420 only) for high accuracy and accelerated calibration time
Avoidance of production stop because of measurement failures
Best cost-benefit ratio for facility management
Cost reduction through anticipatory maintenance
Withstanding safety-critical environments - Extended temperature range up to -50°C and SIL2/3 approvals
SITRANS TH320 transmitters can be used in all sectors. Its compact size means that it can be installed in connection heads of type B or larger. The following sensors/signal sources can be connected over
their universal input module:
• Resistance thermometer (2-wire, 3-wire, 4-wire connection)
• Thermocouples
• Linear resistance, potentiometer and DC voltage sources
With HART communications interface:
• 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.
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.
Model | SITRANS TH320 |
Input Type | Can connect to resistance thermometers (2 - wire, 3 - wire, 4 - wire), thermocouples, and can also process resistance, millivolt signals, linear resistors, potentiometers and DC voltage sources |
Output Signal | 4 - 20 mA, with HART communication |
Connection Method | Screw - clamp or terminal block |
Mounting Method | Can be mounted on the connection head of the temperature sensor, support thermowell or sheath installation |
Operating Temperature Range | -50℃ to +85℃ (-58℉ to +185℉), for SIL application: -40℃ to +80℃ (-40℉ to 176℉) |
Sensing Element Material | Platinum, Nickel/Nickel Alloy, Copper |
Safety Certification | Meet SIL 2/3 certification, and also comply with relevant standards and certifications such as ATEX, IECEx, FM, CSA, EAC Ex, NEPSI, Inmetro |
Diagnostic Function | With diagnostic LED (green/red), has extended diagnostic functions, such as slave pointer, operating hours counter, etc., can monitor input open - circuit and short - circuit, with self - monitoring function |
Electromagnetic Compatibility | In line with DIN EN 61326 and NE 21 standards |
Configuration Method | Can be configured through HART handheld communicator or SIMATIC PDM configuration software with the help of HART modem, and the configuration data is permanently stored in non - volatile memory (EEPROM) |
Input Monitoring | Monitor wire break and short - circuit |
Installation Feature | Compact design, flexible mounting, the center hole allows users to choose the preferred installation type |
Electrical Feature | Electrical isolation, with test terminals for ammeter |
Item | Specification |
Model | SITRANS TH320 |
Input Type | Can connect to resistance thermometers (2 - wire, 3 - wire, 4 - wire), thermocouples, and can also process resistance, millivolt signals, linear resistors, potentiometers and DC voltage sources |
Output Signal | 4 - 20 mA, with HART communication |
Connection Method | Screw - clamp or terminal block |
Packaging: Original bag and box
Esito (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
We can offer rosemount, Endress+Hauser, yokogawa, Siemens, ABB,Fisher,Koso, Samson, Abzil, NELES,UE etc, Brands.
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