46 Safety
New series of single-gas monitors offer reliability even under harsh conditions ) (Pac 6000 and 6500), but also special gases such as ozone, phosgene and nitrogen dioxide (Pac 8000 and 8500). In addition, Pac 8500 is
With Pac 6000, 6500, 8000 and 8500, Dräger now offers a new series of personal single-gas monitors. The monitors detect not only the standard gases carbon monoxide (CO), hydrogen sulphide (H2
S), sulphur dioxide (SO2 also available with a dual sensor for H2
) and oxygen (O2 S/CO or O2
/CO, and a hydrogen-compensated CO sensor. This significantly reduces the influence of hydrogen on the indication of carbon monoxide.
As quick and reliable gas measurement is extremely important in an industrial environment, the monitors of the Pac series provide quick, precise and reliable results, and are very easy to use. Users can choose between 18 long-life sensors for up to 33 gases. The industrial battery used in the monitors enables a service life of two years without a battery change. Existing accessories can also be used with the new monitors.
The integrated “D-Light” shows the user whether the monitor is functional and ready for operation. In addition to the current gas concentration, the large display also provides other important information, such as battery capacity, target gas or remaining service life.
The Pac series withstands even harsh operating conditions. The sensors can be used in a temperature range from -40 to +55°C. An easily replaceable membrane filter protects the sensor against foreign substances such as dust or liquids. The impact and chemical-resistant housing meets the requirements of IP68. Each sensor variant is identified by a colour code. This means that mix-ups are practically impossible.
Pac series monitors display the respective highest concentration measured. Alarms are issued acoustically, optically and with a perceptible vibration, and users can access acknowledged alarms at a later time. For More Info, email:
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New IR technology set to revolutionise refrigerant leak detection with astonishing performance to price ratio
When it comes to refrigerant leak detection, the predominant sensing technologies are undoubtedly Non-Dispersive InfraRed (NDIR) and Metal-Oxide Semiconductor (MOS). NDIR is the best performing technology, but its cost has so far prevented a widespread use in light commercial and residential applications, where MOS has remained the predominant choice.
Although MOS requires periodic calibration (normally every 6 months or less) and replacing every 2 to 4 years, other than suffering from interference from many chemicals other than the target gas and from dependency from environmental conditions, the affordable price has tipped the balance in its favour in settings like food retails, hotel rooms, apartments and offices.
This is about to change with the new IREF LITE series from N.E.T. – a complete line of NDIR sensors for refrigerant gas detection, set to hit the market at an astounding price.
This will make the gas selectivity, accuracy, poison immunity and extended lifetime of NDIR technology affordable for any setting, dramatically improving gas detection performances in the HVAC-R market, improving occupants safety and lowering cost-of-ownership.
The IREF Lite series from N.E.T. includes solutions for R32, R1234yf and R1234ze in %LEL range. In 2019, the series will be extended to several other refrigerant gases in ppm range.
The analogue output provides a user-programmable threshold output consisting of different voltage levels – by default, 10% LEL=1V, 25% LEL=1.5V. The user can freely select the output level, the corresponding output and the hysteresis of the thresholds through Modbus RTU commands.
In fact, digital communication via Modbus RTU commands allows complete access to the sensor functioning parameters, diagnostics and periodic recalibration.
The standard industrial 7-series size and pinout fit existing detectors and is significantly smaller than most NDIR-based alternatives available.
In order to guarantee maximum safety, IREF LITE has been developed in order to meet SIL1 requirements (SIL is a quantitively measurement of the ability of a system to carry out its safety function when called to do so).
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C M Y CM MY CY CMY K MEZZA PAGINA NET 2018 OK.pdf 1 05/10/18 09:38
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FLIR Systems has published a new application note that describes how an upstream oil and gas company have successfully implemented a continuous monitoring system for their oil pads improving safety and reducing operating costs by 35%.
Fugitive emissions and hydrocarbon leaks at an oil and gas site can cause devastating explosions if they are not caught early. Such problems are not only a risk to the facility, but the surrounding community. The company drills on approximately 300 oil pads, all located in populated areas near homes and schools. If they missed a leak at one of their oil pads or caught it too late, the company would be forced to evacuate thousands of people.
The application note describes how a local systems integrator developed a custom leak detection system based upon a FLIR G300a Optical Gas Imaging camera and map based, user-interface monitoring software that can continuously and autonomously monitor installations.
A primary reason the systems integrator selected the FLIR G300a camera was its ability to detect spectral changes in the atmosphere, as well as adjust for diurnal swings that cross exposure settings. This allows continuous use across seasons, including in fog, rain, or snow. The oil and gas company had an interest in visualizing 20 different hydrocarbons, including benzene, ethanol, methane, and propane. The FLIR G300a had the capability to detect each of these gases and more.
Within the first three weeks of operating the new monitoring system, it detected two leaks that the previous control system didn’t. Using the new FLIR G300a based system – an automation supervisor receives alerts and video on a mobile device while in the field. As a result, the supervisor is now able to immediately react and deploy field technicians who are then able to repair the leaks within 30 minutes of detection.
The new system is enabling the oil and gas company to be more precise with their resources, make better use of their field technicians / maintenance vehicles and provide 24/7 coverage compared to previously looking at installations for just 15 minutes per day. With automated analytics and continuous coverage of assets, leaks can be detected as they occur, not hours or days later. The enhanced virtual monitoring capabilities have led to increased operational efficiency, improved safety, and reduced costs to inspect and operate the site.
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OCTOBER / NOVEMBER •
WWW.PETRO-ONLINE.COM
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Fugitive emissions monitor improves safety and cuts operating costs
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