What is a tamper switch and where is it typically located?

What is a tamper switch and where is it typically located?

• A. A device that detects unauthorized valve operation, typically mounted on a valve's box or actuator.
• B. A device that detects water pressure in the distribution piping.
• C. A device that triggers a backflow alarm.
• D. A device that monitors air quality near the system.

Answer: (A)

A tamper switch is a device that detects unauthorized valve operation or access, and it provides a signal to the system when someone opens a valve box or moves a valve actuator. It’s usually installed right where the valve can be seen and accessed—on the valve’s box or on the actuator—so any opening of the box or movement of the valve triggers the switch. When the switch is activated, it sends a supervisory signal to the control or alarm system, helping to deter tampering and alert operators to changes. Other options describe different kinds of sensors: a pressure sensor measures water pressure, a backflow alarm detects backflow conditions, and an air-quality monitor checks the surrounding environment. These serve different purposes and are not tamper-detection devices.

A tamper switch is a device that detects unauthorized valve operation or access, and it provides a signal to the system when someone opens a valve box or moves a valve actuator. It’s usually installed right where the valve can be seen and accessed—on the valve’s box or on the actuator—so any opening of the box or movement of the valve triggers the switch. When the switch is activated, it sends a supervisory signal to the control or alarm system, helping to deter tampering and alert operators to changes.

Other options describe different kinds of sensors: a pressure sensor measures water pressure, a backflow alarm detects backflow conditions, and an air-quality monitor checks the surrounding environment. These serve different purposes and are not tamper-detection devices.