A Closer Look at the Yokogawa EJA120E Precision in Low-Pressure Measurement

Introduction
Measuring low differential pressure demands high accuracy and stability. Enter the Yokogawa EJA120E Draft Range Differential Pressure Transmitter, an instrument designed specifically for draft range applications. Part of Yokogawa’s DPharp series, this transmitter leverages advanced digital sensor technology to deliver superior performance and reliability compared to traditional analog models.

Key Features and Benefits
Exceptional Accuracy: ±0.2% standard, with an improved ±0.09% when using the /HAC option.

Long-Term Stability: Maintains ±0.3% accuracy per year, ensuring dependable measurements over time.

Rapid Response Time: 150 ms, allowing for quick system adjustments.

Multiple Communication Protocols: Supports HART 5/7, FOUNDATION Fieldbus, PROFIBUS PA, and BRAIN for seamless integration.

Safety Compliance: SIL 2/3-certified by Exida and TÜV, meeting high safety standards.

Robust Stainless Steel Enclosure: Provides durability and corrosion resistance, essential for industrial environments.

Optimized for Draft Range Applications: Designed specifically for low-pressure measurement, ensuring reliability where minute pressure changes matter.

Industry Applications
The EJA120E excels in various low-pressure measurement scenarios, making it indispensable in multiple industries:

HVAC & Cleanroom Monitoring: Maintains optimal airflow conditions in controlled environments.

Environmental Compliance: Used in pollution control systems to measure low air pressure variations.

Tank Level Measurement: Ideal for applications requiring precise differential pressure readings at lower pressure ranges.

Fluid Process Optimization: Helps regulate industrial fluid systems with small pressure variations.

Laboratory & Research Use: Supports high-precision experiments in R&D settings.

What Sets the EJA120E Apart?
Yokogawa’s DPharp technology gives the EJA120E a distinct advantage over analog differential pressure transmitters. Unlike traditional strain-gauge-based sensors, DPharp technology offers:

Higher precision with enhanced signal processing.

Built-in sensor characterization to compensate for nonlinear pressure conditions—vital for tank strapping and flow measurement.

Digital stability improvements, reducing drift over time.

Conclusion
For industries requiring reliable low-pressure differential measurement, the Yokogawa EJA120E delivers unmatched accuracy, stability, and digital optimization. Its rugged stainless steel enclosure, fast response time, and advanced communication options make it a top choice for precise applications.