What type of sensor is normally used with...

🔍 Key Concepts

• Relationship between condensate temperature and protection of equipment from thermal shock • What an automatic recirculating valve is trying to protect in a steam cycle (pump, condenser, or heater) • Which of the listed sensor types is commonly used for simple, self‑contained mechanical control in piping systems

💭 Think About

• Ask yourself: What change in the condensate line tells the system that flow needs to be recirculated to protect the plant? • Which of these sensors can directly and mechanically sense that condition in the line without needing complex electronics? • Which options are clearly unrelated to measuring a fluid’s physical condition (temperature, pressure, flow) in a condensate system?

✅ Before You Answer

• Compare each choice to what you would logically need to measure to decide when to open or close a recirculating line. • Eliminate any sensor type that does not normally monitor a fluid property like temperature or pressure in a steam‑plant line. • Think about which sensor type is most often used in simple automatic valves that operate with no external power.

What type of sensor is normally used with the automatic recirculating valve in the main condensate line?

Thermostatic

Pressure

Continuity

Preset electric timing sensor