Dimensions of a 19-inch chassis for oil and petrochemical applications

A standard 19-inch chassis has a width of 482.6 mm (19 inches), with height measured in rack units (1U = 44.45 mm) and variable depth depending on application, typically ranging from 260 mm to 365 mm for industrial enclosures.

Standard Dimensions

• Width: 19 inches (482.6 mm), including mounting ears for rack attachment, ensuring compatibility with standard racks and subracks across industries .
• Height: Measured in rack units (U), where 1U = 1.75 inches (44.45 mm). Common heights for industrial chassis range from 1U to 6U or more, depending on equipment requirements .
• Depth: Industrial chassis depths vary to accommodate internal components. Typical depths for oil and petrochemical applications are 260 mm, 310 mm, 360 mm, or 365 mm, with some custom designs extending further for specialized equipment .

Material and Construction

• Steel chassis: Preferred for maximum durability, structural strength, and EMC shielding. Often zinc-plated or powder-coated for corrosion resistance in harsh industrial environments .
• Aluminium chassis: Lightweight, excellent for heat dissipation, and can be anodised for corrosion protection. Suitable when weight reduction and thermal management are priorities .
• Front and rear panels: Typically 4 mm thick aluminium, customizable with cutouts, engraving, or screen printing for instrumentation and control interfaces .

Industrial Considerations

• EMC protection: Critical in oil and petrochemical environments to prevent interference with sensitive measurement and control equipment .
• Thermal management: Ventilation, airflow patterns, and optional cooling solutions are essential for high-power electronics in enclosed spaces .
• Customization: Chassis can be tailored with handles, mounting trays, telescopic slides, and surface finishes to meet IP ratings, corrosion resistance, and operational ergonomics .
• Standards compliance: Most 19-inch industrial chassis conform to IEC 60297-2/-3 and EIA-310, ensuring mechanical compatibility with racks and subracks .

Summary

For oil and petrochemical applications, a 19-inch chassis provides a standardized width of 482.6 mm, flexible height in rack units, and customizable depth (typically 260–365 mm). Material selection (steel or aluminium), surface finishing, EMC shielding, and thermal management are key factors to ensure durability, safety, and long-term reliability in harsh industrial environments .