Focus on Sensor Technology - Gas Detection 27
New, low-cost, miniature version of globally renown fl ammable gas sensor
NevadaNano recently launched the “MPS™ Mini”, a miniaturised version of their highly successful Molecular Property Spectrometer™ (MPS™) Flammable Gas Sensor. According to NevadaNano, the new sensor is the world’s most accurate hydrocarbon sensor in its class and eliminates the need for maintenance during its 10+year lifetime.
“We have extended our market-leading reliability, accuracy, and lifetime with enhanced algorithms which extends our market-leading position of detecting 19 of the most common combustible gases found in residential, commercial, and other general
use environments,” said Ralph Whitten, President, and Member of the Board of Directors, at NevadaNano. “This new product in a lower cost package specifi cally targets IoT and high volume applications. This enables our customers to set new standards in connected gas sensors and helps companies create safer working environments in industrial, commercial and consumer applications.”
The newest addition to NevadaNano’s MPS Product family, the MPS Mini Flammable gas sensor measures the thermodynamic properties of the air-gas mix and accurately reports 0-100% LEL across 19 fl ammable gases without the need for fi eld calibration. This performance meets the need for fl exible sensor platforms in a wide range of non- industrial applications and makes it ideal for residential and commercial applications like smart meters and IoT devices. In essence, the Mini Flammable creates safer environments for people and their surrounding communities.
Integrated, real-time measurements and built-in compensation for temperature, pressure, and humidity enhance the accuracy of all NevadaNano’s MPS fl ammable gas sensors. Gas concentration readings are accurate across the entire environmental range, including rapid environmental transients, delivering best-in-class accuracy. The Mini Flammable, like all MPS sensors, is inherently immune to drift, decay, or poison.
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New gas sensors for the semiconductor industry
In the fi rst quarter (Q1) of 2022, Sensorix has announced the expansion of its sensor range for hydrides and hydrogen chloride, which are widely used in semiconductor manufacturing.
One of the riskiest industrial sectors in which many hazardous gases are used is the semiconductor industry.
The storage, distribution, or use of such gases in production processes not only poses potential risks to the health and safety of employees, but also threatens the existence of the business. Therefore, their monitoring in industrial processes such as the production of semiconductor materials is highly crucial.
To ensure industrial safety, a reliable system for detecting low concentrations of toxic and dangerous gases is needed. Because many semiconductor processes use hydrides like arsine, phosphine or silane, its presence and concentration have to be monitored. This requires high sensitivity, fast response, and good selectivity of the gas sensors. “The increased demand of electronic components during the Covid-19 pandemic requires reliable gas detection for safe and uninterrupted semiconductor production processes. With the addition of sensors for hydrides and hydrogen chloride, Sensorix now offers a complete range of gas sensors for the semiconductor industry to support the world’s supply of electronics”, said General Manager Dr. Andreas König.
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Mid-Infrared 2.0: Disruptive technologies for the future of optical gas sensing
Many of today’s gas detection systems work within the mid-infrared region of light, what is often termed the “fi ngerprint zone”. This wavelength range is a favorite for engineers of gas sensing systems because it offers greater levels of interaction between gas molecules and light. The performance gains are often orders of magnitude higher than near-infrared technologies.
However, some mid-Infrared detectors technologies use materials like Lead or Mercury. These are environmentally hazardous substances and may contribute to the same issues that some gas sensing applications intend to mitigate, such as pollution monitoring.
Hamamatsu Photonics have been developing innovative products for the optical gas sensing market.
Mid-IR LEDs have the highest luminous output in the market, and allow for low power gas detection systems to become a reality. InAsSb detectors are an eco-friendly alternative to other non-RoHS compliant mid-infrared detectors. Their solid-state manufacture means that they are fast, highly sensitive, do not require cooling and offer high economies of scale – making them a perfect partner for energy effi cient LEDs when detecting CO2 or CH4.
High fi delity Quantum Cascade Lasers facilitate the most sophisticated gas spectroscopy of today. Hamamatsu have matured the technology; bringing the performance of a lab-based system into industrial OEM. Making precise gas spectroscopy possible at high temperatures with unparalleled reliability.
InAsSb detectors
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