FM20S3X

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The FM20S3X is a temperature sensor with analog and digital outputs. It is designed to measure temperature, and features an integrated temperature range of -20°C to +50°C. The sensor also features several versatile output options, including analog and digital outputs. This article will discuss the application field and working principle of the FM20S3X sensor.

Application Field

The FM20S3X is designed to measure temperatures from -20°C to +50°C. The output is linearized to 0-10V and 0-5V, depending on the model. As such, the sensor is well-suited for applications such as space heating system, HVAC systems, and refrigeration systems. The digital output is available, ensuring compatibility with most digital control systems.

The FM20S3X can also be used as an industrial switch for detecting temperature variations or for safety-critical applications, such as in refrigerator cooling chains. The built-in low-pass filter ensures that the output is stable and free of noise. The switch function can be configured to either open or close at specific temperatures.

Working Principle

The FM20S3X is an integrated temperature sensor with an analog and digital output. The temperature-to-voltage output follows a linearized curve, based on the sensor\'s temperature range. The temperature range is -20°C to +50°C and the output options are 0-10V, 0-5V, and 2-wire RTD. The digital output is a two-state open-collector output (TTL-level), with user-selectable temperature thresholds.

The sensor\'s digital output is activated when the temperature reaches a user-defined threshold. The threshold temperatures can be set via the control panel or a dip switch. The precise temperature is not measured; instead, an open-collector output is activated when the temperature reaches a certain level. This makes it ideal for applications where precise temperature readings are not required, such as in an automated refrigerator cooling chain.

Conclusion

The FM20S3X is a temperature sensor with analog and digital outputs. It is designed to measure temperatures from -20°C to +50°C, and can be used as an industrial switch for detecting temperature variations or for safety-critical applications. The digital output is a two-state open-collector output (TTL-level), with user-selectable temperature thresholds. With its wide temperature range and versatile output, the FM20S3X is a great choice for any temperature-sensing application.

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