FS-925 for Air Cooled Imaging Sensors
October 29, 2021
Infrared diagnostic systems help inspect electrical equipment like panels, transformers, switchgear, and other electrical systems. It utilizes thermal imaging to help detect overheating in areas invisible to the human eye, which could be a sign of potential failure. When these infrared diagnostic systems are manufactured in the semiconductor industry, they require coolant (air or liquid) to prevent the sensitive electronics from overheating. In this case, they use high-purity air to cool the infrared imaging sensor during the manufacturing process.
Challenge
Having a reliable flow switch that can work with high-purity air and have a fast response time to loss of air flow.
Solution
FS-925 Series Air Flow Switch
Gems FS-925 Series Air Flow Switch uses a spring-loaded piston to detect positive flow with great precision. It has a 90-degree flow path and is constructed of either 316 SS or Brass, making it a rugged switch. The FS-925 air flow switch reacts to direct fluid flow and will not show false positive flow indication that may happen with sensors using indirect sensing methods, such as pressure measurement. This is vital for use on a coolant line, as the flow switch needs to react rapidly in the event of low airflow.
It comes standard with ¼” FNPT ports, making it compatible with many air lines, or can easily accept an adapter. This piston-based flow switch offers reliable and consistent performance with repeatability of within 1%. This is crucial for an air coolant line because if the imaging sensor loses air cooling, the unit would quickly overheat and suffer irreparable and very costly damage.
With set points ranging down to .5 SCFM for 5 PSI lines and up to 25 SCFM for 100 PSI lines, the FS-925 can handle a wide range of flow setpoints. Additionally, the FS-925 is also UL-approved for explosion-proof use in hazardous locations where the flow switch may be required.
All these features ensure that the FS-925 is an excellent fit for working well in air coolant lines, keeping equipment from overheating.