What is the EN 837-1 standard for pressure gauges?

Table of Contents

1. Introduction to EN 837-1 Standard
2. Scope and Application
3. Technical Specifications
4. Design and Manufacturing Requirements
5. Testing and Calibration
6. Guanshan Instruments Company Solutions
7. References

Introduction to EN 837-1 Standard

The EN 837-1 standard is a European norm that specifies requirements for the design and manufacture of Bourdon tube pressure gauges. This ensures a standardized approach to how accuracy, durability, and reliability are achieved in various industrial applications. The standard outlines critical technical specifications and testing procedures that gauge manufacturers must adhere to for compliance.

Scope and Application

The EN 837-1 standard applies to Bourdon tube pressure gauges with circular, spiral, or helical tube elements. These gauges are typically used in industries such as chemical processing, oil and gas, and water treatment. The standard covers pressure ranges from -0.6 bar to 1600 bar and gauge sizes from 40 mm to 250 mm in diameter.

Technical Specifications

The technical parameters specified in EN 837-1 include:

• Accuracy Classification: 0.1 to 4.0
• Ambient Temperature Range: -40°C to +60°C
• Operational Temperature Limit: Up to 200°C
• Pressure Load: Dynamic pressure should be 0.66 times the full scale and static pressure should be the full scale.

Design and Manufacturing Requirements

The EN 837-1 standard mandates specific design criteria to ensure gauges are safe and durable. Key design considerations include:

• Materials: Stainless steel or brass components to resist corrosion.
• Pressure Element: Bourdon tube made from an appropriate material based on the medium being measured.
• Dial: A clear, easy-to-read dial with proper unit markings.
• Case: Robust and protective case with options for liquid filling to dampen vibrations.

Testing and Calibration

Pressure gauges manufactured under EN 837-1 must undergo rigorous testing and calibration to ensure precision. This includes:

• Calibration: Using traceable standards to verify accuracy within designated classification.
• Pressure Testing: Subjecting gauges to up to 1.5 times their maximum rated pressure to check for leaks or failures.
• Environmental Testing: Evaluating performance under specified temperature extremes and vibrations.

Guanshan Instruments Company Solutions

Guanshan Instruments offers a range of pressure gauges that meet the EN 837-1 standard. Their solutions include:

• Customization: Gauges tailored to specific industrial needs including material, size, and pressure range.
• Advanced Materials: Use of superior materials ensuring longevity and resistance to harsh environments.
• Customer Support: Comprehensive support and calibration services.
• Innovation: Incorporation of digital displays and remote monitoring capabilities.

References

• European Committee for Standardization (CEN). EN 837-1: Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements, and testing.
• Guanshan Instruments Company: Product Catalog and Technical Specifications.
• Industry Publications: Best Practices in Pressure Measurement.