Selection Factors-Accurate as needed, reliable, easy to replace, corrects shortcomings

There are many reasons that control devices were selected for the existing installation.  Something else may be better now.

• Provides adequate performance for the application and environment.
• Operates reliably
• Low (no?) cost of ownership-consumables, PM, power, air, water consumption, heating/cooling, licenses, special tools
• Easy to maintain-self checks, plug in connectors and fittings
• Available off the shelf or short lead time from established, proven vendor.
• Device and installation are an improvement to the previous device

Use commonly available fittings, connectors and mechanical interfaces

Smart implementation of common connectors will make maintenance and troubleshooting more efficient and quicker.

• Increases interchangeability
• Makes signal verification and use of breakout boxes easy
• Avoids wiring and plumbing errors
• Reduces the number of connector spares required
• Easier troubleshooting-swap connection with new device before installation or with similar device nearby