Posifa Technologies Launches New MEMS Pirani Vacuum Transducer Evaluation Kit

PVC4000EVK Eval Kit Allows Vacuum Gauge OEMs to Quickly Test Drive Digital Vacuum Sensing Technology

SAN JOSE, Calif. — Aug. 3, 2021 — Posifa Technologies today announced the availability of an evaluation kit for its PVC4000 series of digital MEMS Pirani vacuum transducer, which promises to disrupt the portable vacuum gauge market by enabling low-cost, easily replaceable sensor probes that can be switched without requiring the vacuum gauge itself to be recalibrated, since all the calibration data is stored within the probe itself.

The PVC4000EVK evaluation kit announced today allows OEMs to quickly test drive Posifa’s MEMS vacuum sensing technology for digital vacuum gauge and related applications. The PVC4000EVK kit consists of a PVC4000 transducer packaged in a brass housing with a 1/4 SAE male flare fitting, or a stainless steel housing with a KF16 fitting that allows it to be installed into any vacuum environment for quick evaluation. The PVC4000 transducer in the kit is calibrated and provides a digital output in microns. The kit’s PC-based diagnostic software gives users access to different sensor readings and configuration data stored in the transducer.

“With the PVC4000EVK, vacuum gauge OEMs can find out in an hour’s time what our digital Pirani vacuum sensor technology can do to help them offer customers more flexible and versatile end products that build brand loyalty,” said Peng Tu, President and CEO at Posifa Technologies.

The PVC4000EVK’s sensor element is based on Posifa’s second-generation MEMS thermal conduction chip, which operates under the principle that the thermal conductivity of gas is proportional to its vacuum pressure. The transducer’s microcontroller-based measuring electronics amplify and digitize the sensor’s signal, providing a digital output via an I²C interface.

The MEMS Pirani vacuum transducer included in the evaluation kit is calibrated for the vacuum range between 1 micron and 760,000 microns. Through the transducer’s digital I²C interface, the user can access the sensor’s raw output as well as the calibrated vacuum reading. The evaluation kit includes a custom wire harness that connects the sensor and the I²C to a USB adapter board, allowing the user to read sensor data from a PC in minutes.

The PVC4000EVK evaluation kit is available now from Digi-Key and other leading distributors. A demonstration video showing the complete PVC4000EVK set-up is available on Posifa Technologies’ YouTube channel.

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About Posifa Technologies
Formerly known as Posifa Microsystems, Posifa Technologies designs and manufactures high-performance, low-cost sensor and sensing solutions, including gas and liquid flow sensors, air velocity sensors, and vacuum sensors. The company’s products are designed to meet the needs of demanding applications in consumer electronics, HVAC, medical devices, data centers, and more. Posifa serves its global customer base through direct sales and a network of distributors in the United States, Europe, Korea, and Taiwan. The company is headquartered in San Jose, California, with an office in Shenzhen, China. More information on Posifa Technologies is available at http://posifatech.com/.

Link to photo of PVC4000EVK:

Link to detailed product information:

Agency contact:
Bob Decker
+1 415 409-0233