17-11-2021 | Connectors, switches and EMECH
15-11-2021 | Connectors, switches and EMECH
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19-11-2021 | Connectors, switches and EMECH
21-10-2021 | Test and Measurement
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23-09-2021 | Subsystems and systems
15-11-2021 | Posifa Technology | Test and Measurement
Posifa Technologies released the new PGS1000 series of MEMS thermal conductivity hydrogen sensors. These devices are designed for stable, cost-effective safety monitoring in environments where hydrogen is used and stored, and include two thermally conductive chips in different configurations-all chips are contained in a compact surface mount form factor.
These sensors detect the hydrogen concentration in the air by measuring the change in the thermal conductivity of the gas mixture. This measurement method provides greater long-term stability and allows for a smaller form factor than a hydrogen sensor triggered by a chemical reaction that ultimately leads to sensor degradation. Due to the company's highly repeatable, high-volume CMOS MEMS technology, the company's technology can also achieve hydrogen detection capabilities at a much lower cost.
This series is based on its second-generation thermal chip. These devices provide a mold sealed in dry air and used as a reference, while the other is exposed to the gas mixture. Due to the maximization of common-mode noise suppression and signal amplification, this design helps to achieve excellent SNR. For safe operation, the sensor is energized with pulse waveforms (400 ms on and 1,000 ms off) to minimize the heater temperature.
These sensors are ideal for hydrogen leak detection and monitoring in industrial processes, medical facilities, and automotive fuel cells. For these applications, these devices combine a fast response time of <1.4 seconds with the widest available range (up to 100% volume) and typical long-term stability of 0.1% FS/year.
19-11-2021 | Test and Measurement
16-11-2021 | Test and Measurement
15-11-2021 | Test and Measurement
12-11-2021 | Test and Measurement