• Gas Sensors with Unique Performance

Gas Sensors

Gas Sensors with Unique Performance

Some electrochemical sensors have to be operated with a bias voltage, which has the distinct disadvantage that the
baseline increases substantially with temperatures above 25°C. The HCl-sensors from Membrapor (Switzerland)
measure hydrogen chloride without biasing and show, additionally to the good baseline stability, no cross-interference
to SO2 or NO2. Due to recent efforts, the response time could be reduced down to t90 Also the NH3-sensors do not need a bias-voltage and show an exceptionally low response time. At the Sensor + Test 2007, it was shown
that the NH3/MR-100 was able to detect 1 ppm ammonia, which makes it perfectly suitable for fast leak detection with portable instruments.
An even lower detection limit is required by phosphine, which is a hazardous gas with a very low TLV-value of 0.1 ppm. In order to monitor
this gas, a highly sensitive sensor is needed. With an output signal of 4’000 nA/ppm and t90 choice for this application. It is a major task to achieve a high selectivity, but also to keep the range in cross-sensitivity to an interference gas as low as possible. A new process technology has lead to hydrogen sensors which fulfil these tasks without exception. The H2/CA-1000 has a CO-interference between 0.1 % and 2.0%, which makes this H2-sensor unique, as are many other sensors from Membrapor.

Digital Edition

AET 28.4 Oct/Nov 2024

November 2024

Gas Detection - Go from lagging to leading: why investment in gas detection makes sense Air Monitoring - Swirl and vortex meters will aid green hydrogen production - Beyond the Stack: Emi...

View all digital editions

Events

Aquatech China 2024

Dec 11 2024 Shanghai, China

Abu Dhabi Sustainability Week

Jan 12 2025 Abu Dhabi, UAE

World Future Energy Summit

Jan 14 2025 Abu Dhabi, UAE

Clean Fuels Conference

Jan 20 2025 San Diego, CA, USA

Carrefour des Gestions Locales de L'eau

Jan 22 2025 Rennes, France

View all events