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Temperature Sensors - Thermostats - Mechanical

Mechanical-type temperature sensors are one of the oldest available sensors, with a long history of reliable performance. They are typically used for detecting temperature levels in long-term environmental monitoring, or in situations where the risk of failure is too high for electronic sensors. Mechanical temperature sensors are robust and resilient to harsh temperatures, and they are also very reliable as they are not affected by things like electromagnetic interference or electrical noise.

One of the most popular types of mechanical temperature sensors is the thermostat. A thermostat is a device that operates by regulating temperature levels in a room or outdoor environment. It does this by opening and closing a switch when the temperature reaches a certain level. The thermostat is generally calibrated to a certain range of temperatures, so it can tell when the temperature exceeds this range. It then turns a ventilator, heater, or another device on or off, depending on the set temperature. This helps ensure the desired temperature is maintained at all times.

A second type of mechanical temperature sensor is the thermistor. A thermistor is a device that works by changing its electrical resistance when exposed to varying temperatures. It is usually made of semiconductor material, and the change in its resistance is used to measure temperature. The thermistor is typically used for long-term temperature tracking and monitoring. It is especially useful in applications where accurate, repeatable measurements are needed, such as food safety and medical temperature monitoring.

Temperature switches are another type of mechanical temperature sensor. These devices are usually designed with a trigger level, or “setpoint,” that is used to open and close an electrical switch when the temperature reaches the preset level. Generally, when the temperature is below the trigger level, the switch remains closed and the current flows through it. However, when the temperature reaches the trigger level, the switch opens and the current is cut off. This type of switches is available in a variety of configurations, and they are often used in industrial applications where their robust construction provides a safe, reliable alternative to electrical and electronic temperature sensors.

Overall, mechanical temperature sensors are an excellent choice for many applications due to their robust construction and reliability. They are not affected by external factors, such as electrical disturbances, and they can maintain accurate readings for long periods of time. These sensors are generally easy to use and maintain, and their cost is relatively low compared to electronic sensors, making them an affordable solution for many temperature monitoring needs.