New PVC4100 Series Fully Calibrated MEMS Pirani Vacuum Transducer 

Posifa Technologies announces its new PVC4100 series fully calibrated MEMS Pirani vacuum transducer. Designed for cost-effective OEM integration, the device consists of a surface-mount MEMS Pirani sensor and microcontroller-based measuring electronics — all packaged in an ultra-compact PCB assembly featuring a connector-terminated wire harness. 

Key Specifications and Benefits:
  • Wide effective range from 0.1 millitorr (0.13 Pa) to 1 atm (760 torr, or 101 kPa), with accuracy of 15 % from 1 millitorr to 200,000 millitorr 
  • Extremely fast response times of 250 ms 
  • Low power consumption for battery-powered instruments
  • Temperature compensation  
Target Applications:
  • Leak detection in closed systems maintained under primary vacuum pumps, such as vacuum-insulated panels
  • Digital vacuum gauges
The Context

The sensor element of the PVC4100 series MEMS Pirani vacuum transducer 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 output via an I2C interface. To compensate for variations in thermal conductivity due to changes in ambient temperature, the PVC4100 features a temperature compensation algorithm, which takes its input from a built-in temperature sensor.  


Samples and production quantities of the PVC4100 are available now.  

Download PVC4100 datasheet  

Contact our authorized distributors to order samples.