Introduction
The document introduces the EXA-based Gas Density Analyzer, a tool designed for precise gas density measurement, particularly useful in applications like hydrogen purity analysis and BTU monitoring in refineries. This analyzer offers improved accuracy by measuring gas density directly, without relying on thermal conductivity.

Key Features
The GD402 Gas Density Analyzer features a cylindrical resonator design that ensures 1% FS linearity and stability, crucial for continuous online system operation. It calculates specific gravity, molecular weight, calories, and BTUs, making it versatile for various industrial applications.

Applications
The analyzer is ideal for measuring hydrogen purity in cooling generators and monitoring BTU for air-fuel control in refineries and steel plants. Its design ensures stability under extreme temperature variations, making it reliable for both new systems and upgrades.

Technical Specifications
- Density measurement range: 0-6 kg/m³ with 1% FS linearity.
- Response time: Approximately 5 seconds.
- Long-term stability: 0.003 kg/m³ per month.
- Caloric value measurement range: 0-130 MJ/m³.

System Configuration
The GD402 system includes a detector and converter, with optional enhancements like the BT200 BRAIN Terminal for easy programming. It supports digital remote communications and self-diagnostics.

Global Presence
Yokogawa Electric Corporation, the manufacturer, has a global presence with headquarters and offices in regions including North America, South America, Europe, the Middle East, Asia, and Australia.

Conclusion
The GD402 Gas Density Analyzer represents a significant advancement in gas density measurement technology, offering cost-effective precision and reduced maintenance requirements.