STEMCO Capillary Switches, a division of Senasys, stands out in the temperature control industry. Our capillary switches feature temperature compensation, a key differentiator that ensures optimal performance in fluctuating temperature conditions.
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What is Temperature Compensation?
Temperature compensation in a capillary switch maintains accurate performance despite ambient temperature changes. For instance, a capillary switch might close contacts at 150°F, but if the equipment’s fluid or air temperature reaches 250°F, a non-compensated switch could fail due to inadequate reaction to the higher temperature.
Why Temperature Compensation Matters
Ensuring Reliability
Without temperature compensation, capillary switches can suffer from poor reaction times and failures under extreme conditions. This can lead to equipment malfunction or even damage, resulting in costly repairs and downtime.
Precision in Performance
Temperature-compensated capillary switches, such as those from STEMCO, adjust their performance to account for ambient temperature changes, ensuring that they operate accurately at the desired set points.
How Senasys Ensures Quality
At Senasys, we subject our capillary tubes to higher temperatures during the inspection process. This rigorous testing ensures that the diaphragm assembly reacts correctly even in extreme environments. Our standard assemblies are ambient temperature compensated up to 250°F, with custom options available to meet specific needs.
STEMCO Capillary Series and Maximum Ambient Temperature
- 351 Series: 250°F
- 352 Series: 250°F
- 354 Series: 150°F
- 355 Series: 150°F
- 358 Series: 250°F
How Capillary Switches Work
All our capillary thermostats operate on the same fundamental physics. A fluid encapsulated in metal reacts to temperature changes by expanding or contracting. This movement drives a diaphragm that engages with a snap-action switch to open or close a circuit. Our capillary thermostats are available with ambient compensation to offset temperature differentials, ensuring more accurate control as environmental conditions change.
The Physics Behind Capillary Switches
- Fluid Dynamics: Encapsulated fluid expands or contracts with temperature changes.
- Diaphragm Movement: Fluid movement actuates a diaphragm.
- Snap-Action Switch: Diaphragm interacts with a switch to open/close a circuit.
Custom Temperature Compensation Options
We understand that different applications may have unique requirements. That’s why we offer custom temperature compensation options to suit your specific needs. Whether you need compensation beyond the standard 250°F or other custom configurations, we can tailor our solutions to match your specifications.
Choosing a temperature-compensated capillary switch from STEMCO ensures reliability, precision, and optimal performance even in extreme temperatures. Our rigorous testing processes and custom options make us the preferred choice for those who demand the best in temperature control technology.
