GAS DETECTION 31
New PPM and PPB wide range sensors aimed at lower explosive limit of VOCs for environmental and safety applications
In a key strategic move designed to further increase its share of the global photoionisation detector (PID) market, ION Science has launched exciting new MiniPID 2 parts per million (PPM) and parts per billion (PPB) Wide Range (WR) sensors which can be incorporated into both fixed and portable instruments for the detection of volatile organic compounds (VOCs).
ION Science’s new MiniPID 2 PPM WR sensor offers a measurement range up to 10,000 ppm and is aimed at detecting the lower explosive limit (LEL) of VOCs, as well as leak detection and repair (LDAR) applications. The MiniPID 2 PPB WR sensor boasts a measurement range of 20 ppb to 200 ppm making it suitable for industrial health and safety and fugitive emissions.
Pete Morris, ION Science’s Business Unit Manager for Sensors comments: “During the past few years, we have focused on expanding our range of sensors for the accurate and reliable detection of VOCs. The two new MiniPID 2 WR models will plug the remaining gap in our portfolio, open up new global markets and allow us to target previously untapped business.
He adds: “Many VOCs have an LEL above 4000 ppm and LDAR method Environmental Protection Agency (EPA) 21, which is defined as ‘determination of volatile organic compound leaks’, dictates you have to measure up to 10,000 ppm. Before launching the MiniPID 2 PPM WR sensor we couldn’t fully access these markets.
“In addition, prior to introducing the MiniPID 2 PPB WR we did not have a sensor optimised for detecting VOCs in industrial environments that have threshold levels between 40 and 200 ppm. It will also help our customers adhere to legislation in the USA which requires fugitive emission measurements of VOCs, including benzene, up to 200 ppm.”
Like all ION Science’s MiniPID 2 sensors, the new WR models offer patented humidity resistance and an anti-contamination design aimed at fast detection of VOCs within even the most challenging environments.
The sensors also incorporate ION Science’s next generation 10.6 eV long-life lamp, which provides exceptional stability and long-term performance, ensuring robust and repeatable sensing for 10,000 hours. Plus, the PPM WR sensor boasts a lamp out diagnostic.
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New cost-effective IR technology offers faster accurate A2L refrigerant gas detection
Stationary refrigeration units, air conditioning units and heat pumps must use non-polluting refrigerant gases, with low global warming potential (GWP), in order to comply with stringent, European F-gas (fluorinated gas) regulations. These low GWP gases can be chosen from either among the natural gases such as carbon dioxide, ammonia and hydrocarbons or among the synthetic refrigerants among which are R1234yf and R1234ze olefins.
It is therefore essential to monitor for gas leaks from these systems to ensure the safety of both people and animals and to safeguard the environment. Most major hotel chains are increasingly taking into account the safety of their guests by installing gas leak detection systems both in public and meeting areas and in bedrooms where the air conditioning system and the coolers can be positioned.
Research into new refrigerant gases is ongoing, with the use of HFO (hydrofluoro-olefin) gases becoming more ubiquitous because of their negligible GWP levels, with an A2L level of minimal toxicity and a mild level of flammability.
Sensor technology for these gases has also come a long way. New detectors, with NDIR (nondispersive infrared) technology can rapidly detect low levels of refrigerant gases in a matter of seconds. These sensors also offer far far longer level of stability than the previous typically used technology, with means less time and effort spent on calibration.
These infrared sensors will not be damaged or poisoned by the gases being detected however: HFO gases have been known to poison both catalytic and semiconductor sensors. In addition, NDIR sensors are now far more competitively priced as both research, development and demand have advanced over time.
Sensitron have been at the forefront of pushing the boundaries of NDIR technology. Their SMART3H is available in a wall sensor and flush mounted version as well as a 220V standalone version with light and sound enabling or in the 10-30V version that can be connected to the gas control panel to monitor and remotely silence alarms. This analyser not only ensures compliance to F-gas regulations, it also offers the peace of mind enjoyed by Sensitron customers the world over.
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eGC (environmental Gas Chromatograph), from ENMET, is a new innovative solution for chemical specific analysis in ambient air. eGC is a fully autonomous trace toxic chemical facility and community air monitor for field applications which is capable of sub-parts per billion analysis.
The eGC uses a cloud-based design for general data reporting with e-mail alerts upon concentration (alarm) excursions. These alerts allow the user to be notified when there is a concern and follow up quickly using the remote access capability with web connected devices.
The eGC’s intuitive graphical web site displays ppb concentration data over time, local weather conditions, (wind speed and direction) and GIS map position. This fusion of information allows the eGC to be a very useful tool for chemical specific emission monitoring and source identification. Additionally, the eGC can also communicate externally with other environmental software modeling applications expanding the use of the data for other purposes.
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