Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 237

The following are typical controlled variables used for automatic control:

• Bar screen channel gates (open–close),

• Bar screen rake (on–off),

• Grit system channel gates (open–close),

• Grit system transport equipment (on–off),

• Aerated grit air supply (valve position),

• Air or water jet valve (open–close), and

• Conveyance system transport equipment (on–off).