🔎 What Are Level Measurement Instruments?
Level measurement instruments continuously and precisely monitor the level of liquids, solids, or gases in tanks, silos, boilers, reactors, and process lines. They transmit signals to control and automation systems via 4–20 mA, HART, Profibus, Profinet, or Foundation Fieldbus protocols.
- Petrochemical plants → Emerson Rosemount 5400 radar transmitter ensures non‑contact, stable measurement under high temperature and pressure.
- Power plants → Rosemount 3051DP differential pressure transmitter is widely used for boiler level control.
- Food & beverage industry → Yokogawa ultrasonic transmitters provide hygienic tank measurement.
- Water & wastewater facilities → ABB hydrostatic transmitters deliver reliable results in open basins and membrane tanks.
- Chemical & refinery processes → Emerson Rosemount 5300 Guided Wave Radar ensures reliable measurement in foam and vapor conditions.
🧭 Types of Level Measurement & Applications
📡 Radar Level Transmitters
Radar transmitters use microwave signals for non‑contact measurement, minimally affected by steam, dust, pressure, and temperature.
- Emerson Rosemount 5400 / 5402 / 5408 → Petrochemical storage tanks, LNG, pressurized vessels
- ABB 5400 & LWT300 → Corrosive chemicals, PTFE‑coated antenna applications
Advantages: High accuracy, maintenance‑free, SIL & ATEX options
Considerations: Antenna type, dielectric constant, process connection
📡 Guided Wave Radar (GWR) Level Transmitters
Guided Wave Radar transmitters direct microwave signals along a probe (rod or cable). They provide reliable results in conditions where conventional radar struggles, such as foam, heavy vapor, or low dielectric liquids.
- Emerson Rosemount 5300 GWR → Chemical processes, refineries, foamy environments
- Yokogawa GWR Transmitters → High‑precision tank applications
- Siemens LR Series GWR → Pressurized tanks, specialized process vessels
Advantages: Reliable in foam/vapor, high accuracy, wide application range
Considerations: Probe type (rod/cable), tank internals, installation position
🔊 Ultrasonic Level Transmitters
Ultrasonic transmitters use sound waves, offering cost‑effective solutions for open tanks and basins.
- Siemens SITRANS Ultrasonic (P & X Series) → Water treatment, open basins
- Yokogawa Ultrasonic → Food, beverage, hygienic processes
Advantages: Easy installation, low cost
Limitations: Foam, heavy steam, temperature fluctuations
💧 Hydrostatic Level Transmitters
Hydrostatic transmitters calculate level based on liquid column pressure.
- ABB Hydrostatic → Wastewater, open tanks
- Rosemount Hydrostatic → Storage tanks, auxiliary processes
Advantages: Simple principle, cost‑effective
Considerations: Density and temperature compensation
🔀 Differential Pressure (DP) Level Transmitters
DP transmitters measure the ΔP difference between the bottom and top of the tank.
- Rosemount 3051DP / 3051S → Power plants, boiler applications
- ABB 266DP → Chemical & petrochemical reactors
- Yokogawa DPharp EJA‑DP → Processes requiring high stability
Advantages: Proven technology, high reliability
Considerations: Capillary lines, temperature effects
⚖️ Comparison of Level Measurement Types
| Type | Typical Application | Strengths | Considerations |
| Radar | Pressurized tanks, silos | Non‑contact, high accuracy | Antenna & process compatibility |
| GWR | Foam, vapor, chemical | Reliable in foam, high accuracy | Probe type & installation |
| Ultrasonic | Open tanks, basins | Economical, quick installation | Foam & steam |
| Hydrostatic | Wastewater, open tanks | Simple, low cost | Density variations |
| DP Level | Boilers, reactors | Reliable, widely used | Capillaries & temperature |
🧠 How to Select the Right Level Instrument
Key parameters to evaluate:
- Fluid type (liquid / solid / gas)
- Process temperature and pressure
- Hygiene & certification requirements (ATEX, SIL, FDA)
- Measurement range and accuracy
- Maintenance and accessibility
Incorrect selection may cause measurement errors, higher maintenance costs, and process downtime.
🏷️ Brand & Model Based Level Instruments
Emerson Rosemount
- 5400 / 5402 / 5408 Radar
- 5300 Guided Wave Radar
- 3051DP / 3051S DP Level
ABB
- 5400 Radar
- LWT300 Radar
- Hydrostatic Level
- 266DP Level
Yokogawa
- EJA‑DP DPharp Level
- Ultrasonic Level
- GWR Transmitters
Siemens SITRANS
- LR250 / LR560 Radar
- Ultrasonic Level
- LR Series GWR
🌍 Global Supply, Datasheets & RFQ
Yeşil Grup Enerji provides Emerson Rosemount, ABB, Yokogawa, and Siemens level instruments with:
- 🌐 Global stock availability
- ✅ Full product code validation
- 📄 Datasheets & technical comparison
- 🔄 Equivalent product recommendations
- 📦 Project‑based fast 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 solution.
📧 Contact
- Email: info@yesilgrupenerji.com
- Phone: +90 505 696 61 00
- Web: www.yesilgrupenerji.com
