Gas Detection 25 New dual range portable monitor for inerted tank monitoring applications
Crowcon Detection Instruments has launched a new dual range portable monitor to add to its acclaimed Gas-Pro range. Gas-Pro TK has been designed for use in specialist inerted tank environments to monitor levels of fl ammable gases and oxygen. An environment where standard gas detectors will not work.
Fiona Macrae, Regional Marketing Manager at Crowcon explains, “We have created the new Gas-Pro TK device for the specialist application of monitoring inerted tank spaces during purging or gas freeing. It enables users to monitor the gas mix in tanks carrying fl ammable gas during transport at sea or on shore, such as oil tankers and oil storage terminals. At 340g, Gas-Pro TK is up to six times lighter than other monitors for this application; a boon if you have to carry it with you all day.”
In Tank Check mode, the Crowcon Gas-Pro TK (rebranded from Tank-Pro), monitors concentrations of fl ammable gas and oxygen, checking that an unsafe mixture is not developing. It uses dual IR sensor technology which detects the spectrum of possible fl ammable gas concentrations from high %vol to low %LEL. The device auto-ranges, switching between %vol and %LEL as gas concentration demands, without manual intervention, and notifi es the user as it happens.
“What makes this detector special is the fact that the dual IR is not inhibited by high concentrations; nor does it require oxygen to work - unlike catalytic bead sensors which are totally unsuitable for this application”, adds Macrae.
The Gas-Pro TK is available calibrated methane, propane or butane. With IP65 and IP67 ingress protection, Gas-Pro TK meets the demands of most industrial environments. With optional MED certifi cations, it is a valuable tool for tank monitoring on-board ship. The optional High H?S Sensor addition allows users to analyse possible risk if gases vent during purging, as well as the potential risk from pyrophores. With this option, users can monitor over the 0-100 or 0-1000ppm range.
As with other units in the Gas-Pro range of detectors, Gas-Pro TK has the additional benefi t of offering full personal gas detection and confi ned space pre-entry check functionalities.
The Gas-Pro TK is especially designed to perform in challenging inerted tank environments so it will appeal to health and safety managers responsible for marine fuel tankers and on-shore oil storage terminals and tank farms. This instrument provides atmosphere monitoring whilst purging inerted tank spaces or returning to breathable atmosphere (gas freeing) and is MED approved for vessels covered by the Maritime Equipment Directive. In addition it also has the benefi t of offering full personal gas detection and confi ned space pre-entry check functionalities
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New automated fl ammable gas sensor improves safety and lowers cost of ownership
NevadaNano have announced the release of the new MPS fl ammable gas sensor, the fi rst gas sensor of its type able to accurately detect, quantify, and classify a broad array of fl ammable or explosive gases using a single calibration.
That is not the only industry fi rst: The MPS sensor is also able to measure the concentration of fl ammable and combustible gas mixtures and it can classify detected gases and mixtures into hydrogen, methane, or light/medium/heavy gas.
“Our engineering team has developed a robust and reliable sensor to solve the problems that have plagued fl ammable sensors for decades,” said Mark Brandemuehl, Sr. VP of Sales and Marketing. “With one calibration, the new MPS fl ammable gas sensor delivers accurate measurement of 12 gases and provides stable, reliable results for years.” The sensor can be installed in fi xed and portable applications.
The MPS Flammable Gas Sensor requires signifi cantly less power than catalytic bead based sensors, while delivering accurate detection of hydrogen and other hydrocarbons not detected by NDIR fl ammable gas sensors.
Thanks to its long-term stability and reliability, NevadaNano’s sensor has a lower cost of ownership than catalytic bead type sensors. The MPS Flammable Gas sensor will not “poison” or stop working when exposed to common industrial chemicals, eliminating the need for frequent, costly manual calibrations. Even more important, workers can count on the reliability of the MPS Flammable Gas sensor to continuously ensure a safe workplace.
NevadaNano will offer the new sensors in two industry standard form factors. The Series 7 MPS Flammable Gas Sensor (32 mm x 13.8 mm) is available for evaluation now; the Series 4 (20 mm x 16.5 mm) sensors are expected to be available for evaluation in December, 2018.
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www.envirotech-online.com IET November / December 2018 C M Y CM MY CY CMY K
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 offi ces.
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 fi t existing detectors and is signifi cantly 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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MEZZA PAGINA NET 2018 OK.pdf 1 05/10/18
47212pr@reply-direct.com 09:38
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