Why Is the Critical Temperature Switch Becoming More Popular Than a Thermistor?

Over the past several years, integrating a critical temperature switch (CTS) has become a popular alternative to the traditionally popular Thermistors. There are a variety of reasons for this sudden shift in focus among a variety of industries interested in fire detectors and temperature related applications. To understand why the critical temperature switch is gaining traction in the marketplace, it is essential to focus on the same factors utilized by top decision-makers when they are designing and manufacturing end-products.

One of the first factors to be considered by building an end-product is cost. A critical temperature switch can be the most cost-effective solution on multiple fronts. It is also less expensive to integrate into product designs and the end-product manufacturing process. This is because it can simply be connect to a circuit and connect to the processor. As a result, there is no matching of components which is necessary to integrate a thermistor. In the past, the thermistor was popular because it was the most cost-effective solution; however this is no longer the cost.

When developing a fire safety or temperature related product, accuracy is always a key factor. Recent breakthroughs in the design have made it significantly more accurate than a thermistor. Accuracy is most often measured by looking at the potential for error of the total circuit. To accomplish this, the error rate of each component must be added to determine the worst-case total circuit error rate. A critical temperature switch only has one source of error because it is fully integrated and calibrated when it is being produced. A thermistor is affected by multiple error sources such as the resistor, digital alarm, and the inherent reference bias because it is typically not integrated until post-production.

A final reason this has become more popular than the thermistor is because it requires less electric power to function. The primary concern of most system designs is power consumption. A critical temperature switch requires far less power to operate than a thermistor. This is because it requires the same amount of power regardless of the operating range. On the other hand, a Thermistors requires more power as the temperature increases and thermistor resistance decreases.

As the critical temperature switch continues to evolve, there is a good chance it will entirely replace the thermistor in most applications. This is because it provides notable benefits related to the primary factors used by end-product decision-makers when making component decisions.

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