by Mat Dirjish
Posifa Technologies claims its PGS5100 series MEMS thermal conductivity hydrogen sensors provide early warning of abnormal conditions inside electric vehicle (EV) battery packs and other safety-critical environments. In contrast to the company’s earlier PGS4100 series, the PGS5100 sensors have a 10x faster response time, the ability to measure hydrogen concentrations from 0% to 25%, and exhibit a service life of more than 15 years.
The sensors determine hydrogen concentration by measuring changes in the thermal conductivity of gas mixtures. Integral humidity and barometric pressure sensors automatically compensate for environmental variations, ensuring accurate readings across temperature, humidity, and altitude ranges. Resistant to condensation and non-reactive to contaminants, the components reportedly provide long-term stable operation in harsh conditions, e.g., EV battery enclosures, fuel cell systems, and industrial facilities.
For system integration, the PGS5100 sensors support MODBUS-RTU/RS-485 output now, with CAN support in the near future. Other features include a 100-ms response time, 200-ms warm-up time, and operation from a 5V supply with an average power consumption of 50 mW
Samples and production quantities of the PGS5100 series hydrogen sensors are available now. For deeper details, peruse the PGS5100 series datasheet.
Mat Dirjish Online 