🔎 What Are Temperature Sensors & Transmitters?
Temperature sensors and transmitters measure process temperature with high accuracy, stability, and repeatability, transmitting signals to control and automation systems via industrial communication protocols such as 4–20 mA, HART, Profibus, Profinet, or Foundation Fieldbus.
In power plants, high temperature and vibration resistance in boilers and steam lines is critical; in food and pharmaceutical industries, hygienic design and high accuracy are essential; in chemical and petrochemical plants, material selection for corrosive environments directly affects performance.
The three most common product groups in industry:
- RTD (Resistance Temperature Detector) → Pt100, Pt1000
- Thermocouples → K, J, T, N, E, R, S types
- Temperature Transmitters → Convert RTD/thermocouple signals into standard analog or digital outputs
🧭 Measurement Technologies
🌡️ RTD Sensors (Pt100 / Pt1000)
RTD sensors use a platinum resistance element to measure temperature, providing high accuracy and long‑term stability.
- Typical range: –200 °C … +600 °C
- Accuracy: ±0.1 °C (IEC 60751, Class A / AA)
- Connection types: 2‑wire, 3‑wire, 4‑wire
- Applications: Food & beverage processes, pharmaceutical production (GMP compliant), power plants, chemical & refinery plants
- Advantages: Low drift, high repeatability, long service life
- Considerations: Cable length and resistance compensation, ambient temperature, electromagnetic interference (EMI)
🔥 Thermocouples (K, J, T, N, E, R, S)
Thermocouples operate on the thermo‑electric voltage principle at the junction of two different metals, widely used in very high temperature applications.
- Typical range: –200 °C … +1800 °C
- Common types and uses:
- K type: General industrial applications
- J type: Medium temperature processes
- T type: Low temperature and cryogenic applications
- R / S type: High‑temperature furnaces
- Advantages: Wide temperature range, fast response time, mechanical durability
- Considerations: Lower accuracy compared to RTD, cold junction compensation, periodic calibration required
📡 Temperature Transmitters
Temperature transmitters process signals from RTDs or thermocouples, converting them into reliable standard outputs immune to noise and suitable for long‑distance transmission.
- Outputs / Protocols: 4–20 mA, HART, Profibus PA, Foundation Fieldbus
- Mounting types: Head‑mount (inside sensor head), Rail‑mount (panel type)
- Advantages: Stable signal over long distances, full compatibility with DCS/PLC systems, multi‑sensor support
- Considerations: Sensor–transmitter compatibility, ambient temperature, installation space
⚖️ Comparison of Measurement Types
| Type | Range | Accuracy | Typical Application | Strengths | Considerations |
| RTD (Pt100/Pt1000) | –200…+600 °C | ±0.1 °C | Food, pharma, energy | High accuracy | Cable compensation |
| Thermocouple (K, J, T etc.) | –200…+1800 °C | ±1–2 °C | Metal, glass, petrochemical | Wide range | Calibration |
| Transmitter | Sensor dependent | Sensor dependent | Energy, chemical, food | Reliable signal | Sensor compatibility |
🧠 How to Select the Right Temperature Measurement Device
Selection criteria:
- Measurement range and maximum temperature
- Accuracy and stability requirements
- Process environment (corrosive, hygienic, high pressure)
- Mounting type (flanged, threaded, Tri‑Clamp, immersion)
- Communication protocol (HART, Profibus, Profinet, FF)
Application examples:
- Food processes → Pt100 RTD + Siemens SITRANS T transmitter
- Metal smelting → K‑type thermocouple + ABB TTX200 transmitter
- Power plant boilers → RTD sensor + Emerson Rosemount 644 head‑mount transmitter
🏷️ Brand & Model Based Temperature Measurement Devices
Emerson Rosemount
- Rosemount 644 Head‑Mount Temperature Transmitter
- Rosemount 248 Rail‑Mount Temperature Transmitter
- Rosemount RTD & Thermocouple Assemblies
ABB
- ABB TTX200 Temperature Transmitter
- ABB TTH300 Head‑Mount Transmitter
- ABB RTD & Thermocouple Sensors
Yokogawa
- Yokogawa YTA110 / YTA310 Temperature Transmitters
- Yokogawa RTD & Thermocouple Assemblies
Siemens SITRANS
- SITRANS T Head‑Mount & Rail‑Mount Transmitters
- Siemens RTD Sensors (Pt100/Pt1000)
- Siemens Thermocouple Assemblies
🌍 Global Supply & RFQ
Yeşil Grup Enerji provides Emerson Rosemount, ABB, Yokogawa, and Siemens temperature sensors and transmitters with:
- 🌍 Fast supply from global stock
- ✅ Full product code and configuration validation
- 📄 Datasheet, technical comparison, and equivalent product support
- 🔄 Project‑based competitive RFQ and lead‑time management
🌐 Regional Coverage
- Middle East: Türkiye, Saudi Arabia, UAE, Qatar, Iraq, Jordan, Oman
- Europe: Germany, France, Netherlands, Italy, Poland, Romania, United Kingdom
- Central Asia & CIS: Russia, Azerbaijan, Kazakhstan, Uzbekistan, Turkmenistan
- Africa: Algeria, Egypt, Nigeria, South Africa, Kenya, Morocco
- Asia & Americas: China, South Korea, India, USA, Brazil
⚠️ Important Note
Yeşil Grup Enerji is not an authorized distributor of the mentioned brands.
With an independent multi‑brand sourcing approach, we provide the most suitable technical and commercial solutions for your projects.
📧 Contact
- Email: info@yesilgrupenerji.com
- Phone: +90 505 696 61 00
- Web: www.yesilgrupenerji.com
