EN 837-2:1997

Overview

EN 837-2:1997 is a key European standard published by CEN that focuses on the selection and installation of pressure gauges. This standard specifically addresses pressure gauges whose pressure responsive elements consist of metal parts that deform under the measured pressure, ensuring reliable performance and maximum safety. EN 837-2 complements other parts of the EN 837 series, providing practical recommendations to optimize gauge use in various industrial and commercial pressure measurement applications.

Key Topics

• Gauge Selection Criteria
  EN 837-2 outlines essential factors to consider when choosing pressure gauges, including pressure range, environmental conditions, and compatibility with the measured medium. Selecting a gauge that matches the application requirements prevents premature failure and measurement inaccuracies.

• Installation Best Practices
  The standard provides detailed guidance on effectively installing metal-element pressure gauges. This includes recommendations for mounting orientation, connection types, and location considerations to minimize mechanical stress and vibration impacts.

• Safety Requirements
  To ensure safe operation, EN 837-2 highlights precautions such as avoiding exposure to pressures exceeding gauge limits, protecting against system surges, and using safety accessories like snubbers and pressure relief valves where necessary.

• Maintenance and Inspection
  Ongoing maintenance, regular inspection schedules, and diagnostic checks are emphasized to extend service life and maintain reliable gauge performance in critical systems.

Applications

EN 837-2 is widely applicable across industries requiring precise pressure measurement with robust metal-element gauges:

• Industrial Process Control
  Ensuring accurate pressure monitoring in manufacturing lines, chemical plants, and refineries, where safety and reliability are paramount.

• HVAC and Refrigeration Systems
  Reliable gauge selection and installation enable effective system diagnostics and performance assessments.

• Hydraulic and Pneumatic Systems
  Correct gauge implementation supports system efficiency and avoids downtime due to pressure measurement faults.

• Water and Wastewater Treatment
  Maintaining accurate pressure readings helps optimize filtration and distribution operations.

By adhering to EN 837-2 guidance, organizations can improve operational safety, extend equipment life, and reduce maintenance costs linked to pressure measurement devices.

Related Standards

• EN 837-1: Specification and testing of Bourdon tube pressure gauges
  Defines performance and construction requirements for pressure gauges covered in EN 837-2.

• EN 837-3: Diaphragm and capsule pressure gauges
  Complements EN 837-2 by covering gauges with different pressure-sensing elements.

• ISO 9001: Quality management systems
  Often integrated with EN 837-2 to ensure consistent gauge quality and traceability during production and deployment.

• IEC 60529: Degrees of protection by enclosures (IP Code)
  Relevant for selecting gauges suitable for various environmental conditions.

Summary

EN 837-2:1997 is the authoritative guide for selecting and installing metal-element pressure gauges that deliver accurate measurements safely. Applying its recommendations helps industries achieve optimal gauge performance, operational safety, and regulatory compliance. This standard is an essential reference for engineers, technicians, and quality managers involved in pressure measurement and instrumentation across diverse sectors.