Posifa Technologies’ PAV1000 series air velocity sensors target data center thermal management and HVAC applications such as filter monitoring. Measuring air velocity at 7 m/s (PAV1005V) and 15 m/s (PAV1015V), the devices offer response times of 125 ms typical in a compact, robust package.
The PAV1000 series was designed as an economical, high-performance air velocity sensor for thermal management and filter monitoring in space-constrained locations, such as rack enclosures with air cooling in data centers. Unlike thermistor-based solutions, the Posifa MEMS sensor core is minimally affected by ambient temperature changes and provides instant real-time feedback on proper air flow at critical locations.
The devices feature the company’s third generation thermal flow die, which uses a pair of thermopiles to detect changes in temperature gradient caused by mass flow. The result is a repeatability of 1% FS and accuracy of 5% FS. The solid-state thermal isolation structure on the sensor die eliminates the need for a surface cavity or fragile membrane used in competing technologies, making the sensor resistant to clogging and pressure shock.
The PAV1000 series offers an output voltage range from 0 to 4.5 Vdc and operates from a supply voltage from 5 to 5.5 Vdc and supply current of 20 mA. The devices operate over a temperature range from -25°C to +85°C. Samples and production quantities of the PAV1000 series air velocity sensors are available now. Further information, checkout the PAV1000 datasheet.