What types of sensors are used by automatic flow controls?

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Multiple Choice

What types of sensors are used by automatic flow controls?

Automatic flow controls rely on sensors that continuously monitor material movement and presence so the system can adjust flow without human input. A contact paddle switch detects when material physically touches a paddle, providing a direct signal about flow or stoppage. Non-contact infrared sensors measure infrared energy to detect presence or temperature from a distance, while ultrasonic sensors use sound waves to determine the level or distance to the material surface. Together, these sensor types give reliable, real-time feedback for regulating gates or valves. Relying on visual inspection, temperature alone, or pressure gauges wouldn’t correctly support automatic flow control: visual inspection is manual, temperature alone doesn’t indicate flow, and pressure gauges don’t directly measure flow rate.

Automatic flow controls rely on sensors that continuously monitor material movement and presence so the system can adjust flow without human input. A contact paddle switch detects when material physically touches a paddle, providing a direct signal about flow or stoppage. Non-contact infrared sensors measure infrared energy to detect presence or temperature from a distance, while ultrasonic sensors use sound waves to determine the level or distance to the material surface. Together, these sensor types give reliable, real-time feedback for regulating gates or valves.

Relying on visual inspection, temperature alone, or pressure gauges wouldn’t correctly support automatic flow control: visual inspection is manual, temperature alone doesn’t indicate flow, and pressure gauges don’t directly measure flow rate.

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