SAFETY


They also can withstand background gas concentrations without reducing the sensor’s life.


In addition, the mechanical design of the sensor is optimized for operational efficiency. Every arrangement and placement of the sensor components have been strategically positioned to develop the most efficacious interaction between the electrolyte, electrode catalyst, and target gas regardless of environmental conditions to overcome.


These design advancements are instrumental in heightening sensor performance and lifetime, which can help keep plants safe from ammonia gas leaks, while lowering the cost of maintenance for the user. The result is a relatively lower instrument lifecycle cost.


measure the concentration (ppm.m) over the full distance between the transmitter unit and receiver unit.


ELDS open path detectors analyze the signal using a technique called Fourier transform, which breaks the signal into several component parts that can be analyzed against a predetermined pattern that is similar to a harmonic fingerprint. That means there are no false alarms from interference gases and the detectors are less prone to water vapor interference, and are more reliable with heightened performance in rain, snow, or fog.


Ultrasonic Gas Leak Detection (UGLD)


UGLD technology detects leaks from pressurized gas systems by sensing the airborne ultrasound produced by the escaping gas (Fig 4). This means that the ultrasonic gas leak detectors sense gas leaks at the speed of sound in a detection radius up to 28 meters (92 ft) depending on the gas, leak size, and leak rate.


Unlike conventional point or open path detectors, ultrasonic detectors do not have to wait for gas to accumulate into a potentially dangerous gas cloud and come into physical contact with the detectors. They instantaneously raise an alarm if a leak is detected. The ultrasonic acoustic gas leak detector picks up the leak without being affected by conditions such as changing wind directions, gas dilution, and the direction of the gas leak— conditions relevant for most outdoor gas installations.


Fig 3. Enhanced Laser Diode Spectroscopy (ELDS) Sensing Laser Based Open Path Detectors


Laser-based open path gas detectors (Fig. 3) use the effect of absorption of specific optical light by ammonia. This sensor technology utilizes enhanced laser diode spectroscopy (ELDS), which is available with the Senscient ELDS™ Gas Detector from MSA. Unlike other point gas detectors that measure the gas concentration at a particular (fixed) location, ELDS gas detectors


Conclusions


Compared to just 20-30 years ago, ammonia point sensor technology has substantially improved, with the new design and introduction of ionic liquids in the chemistry of electrochemical sensors. Moreover, they can be supported by other ammonia perimeter or area detection technologies such as Enhanced Laser Diode Spectroscopy open path gas detectors and Ultrasonic gas leak detectors.


Fig 4. Ultrasonic Gas Leak Detection


When assessing a plant’s safety requirements, users should consider a layered strategy to design the most comprehensive gas detection system for the facility. There is no single perfect solution, so understanding the monitoring environment and the specific benefits and limitations of the sensors selected is paramount to ensuring optimal plant safety from ammonia gas releases.


Footnotes


1. U.S. Energy Information Agency, Natural Gas Weekly Update, April 1, 2021: https://www.eia.gov/naturalgas/weekly/ archivenew_ngwu/2021/04_01/


2. Chemical & Engineering News: March 8, 2021:


https://cen.acs.org/business/petrochemicals/ammonia-fuel- future/99/i8


9


Author Contact Details Sarah Rajasekera, Segment Marketing Manager FGFD, MSA Safety • 1000 Cranberry Woods Drive, Cranberry Township, PA 16066, USA • Tel: +1-724-776-8600 • Email: sarah.rajasekera@msasafety.com • Web: msasafety.com/detection


A versatile controller to fit any “simple” task Sometimes a small and


seemingly simple gas warning system is all it takes to ensure safety and comply with legal requirements. But when it comes to potentially dangerous gases, it rarely is truly easy.


GfG’s new fixed gas monitoring controller GMA22-M provides the functionality and versatility needed to address every task that


doesn’t ask for a fully-fledged gas detection solution.


Up to 4 transmitters can be connected to the GMA22-M. Unlike with typical on-site, stand-alone solutions, measuring points can be remotely monitored with the GMA22-M. The installation site depends on the requirements of the respective task. The device intended for wall mounting can be installed as close as next to the entrance door of the room to be monitored or as far as one kilometre away at the control centre.


Selecting the GMA22-M as controller provides customers with the complete range of GfG transmitters and sensors to choose from. Configuration of the measuring point designations, the detector type, the type of gas and measuring range as well as individual or specified alarm thresholds can easily be programmed for each measuring point.


More information online: ilmt.co/PL/EzVG For More Info, email:


email: For More Info, email: email:


52676pr@reply-direct.com


Moving towards non-fossils - The challenges ahead


Don’t miss this 2-day short-courses on GCXGC at the PEFTEC Conference and exhibition taking place Online on the 24th & Join the discussion and Don’t miss this Industry-Institute Online Panel discussion on Plastic recycling & Petrochemistry Challenges. Taking place on day 2 of the Virtual PEFTEC Conference on the 25th November at 15.05-16.05 (Central European Time).


Speakers include Dr. Maria Soliman from SABIC, Dr. Lars Meyer from BASF, Dr. Mattijs Ruitenbeek from DOW, Dr. Volodymyr Palchyk from Frauhofer and Dr. Jules Magain from Total.


If you would like to join the discussion or would like to ask questions or suggestions to our panel of experts then please register today. Registration is Free to all attendees, your pass will allow you to network with speakers, other attendees and exhibitors and will allow you to attend and download all conference presentations over this two networking event.


Please register at www.peftec.com For More Info, email:


email: For More Info, email:


56481pr@reply-direct.com


OCTOBER / NOVEMBER


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44