TC622COA

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The TC622COA is an innovative temperature control, on-off solid state-based thermostat-type device from STMicroelectronics. It is designed to maintain temperatures within a given range, and to switch power supply accordingly. The device works by sensing the ambient temperature of a particular environment, and then controlling the supply of power to a device based on the temperature reading.

Applications

The TC622COA has a variety of applications across sectors, including industrial, medical, and HVAC. It is commonly used as a temperature controller for devices such as ovens, dryers, heaters, air conditioners, and incubators. It can also be used as a safety shutoff device for hazardous spaces, as an over-temperature warning system, and in monitoring systems. It is particularly well suited for applications such as laboratory equipment, hot OR rolls, medical cabinets, and food warmers. It is robust and reliable, and designed to operate in temperatures ranging from -25 °C to +85 °C.

Working Principle

The TC622COA monitors the ambient temperature of the environment continuously, using a built-in circuit with a thermistor. When the temperature reaches a predefined level, either on the high side or low side of the range, an internal relay is switched on to control the power supply. Depending on the configuration, the TC622COA is usually set up to switch between two predefined temperature levels, or to provide a continuous linear control. The device can also be set up to start the power supply when the temperature difference between the on and off points is exceeded by a certain degree, or to cycle the power supply on a regular schedule.

The device also has a reverse bias protection feature, which protects against overvoltage and spikes, and ensures that the internal relay operates as expected. It also has overload protection, ensuring that the device does not become overloaded when in operation. Other features include output over-temperature protection, overtemperature accuracy, low cost, small size, and low power consumption.

The TC622COA is available in a choice of mounting styles, and is easy to configure and install. It is an ideal choice for temperature control and thermal safety functions in a wide range of applications.

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