54 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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email: For More Info, email: email:


N.E.T.’s new Point Open Path for superior hydrocarbon detection


When measurement reliability and response time become critical factors in combustible gas detection, the new Point Open Path IR sensor from N.E.T. is the answer. Specifically developed to keep measurements immune from ambient humidity changes and T90 below 7 seconds, the POP-S-IR significantly improve traditional performances of Infrared sensor to detect Methane, Propane and other Hydrocarbons in LEL range.


The sensor uses an infrared energy source and two pyroelectric detectors, each sensitive to different ranges of wavelengths in the spectrum’s infrared portion. The Active detector is sensitive in the range of absorption of the target gas, while the Reference detector is not. The IR source is directed through a glass window into an open gas chamber. The light is reflected by a mirror at the end of the chamber back into the main enclosure and into the pyroelectric detectors. The presence of target gas in the measurement chamber reduces the intensity reaching the Active detector but not the one reaching the Reference detector. The ratio of the two signals is computed in a combustible gas concentration by the sensor microprocessor through N.E.T.’s proprietary algorithm.


Infrared technology dependability eliminates the need for frequent calibrations (the Long Term Drift is ±3% of FS range/year) and the sensor life is not impacted by exposure to gas and other contaminants, resulting in a dramatic reduction of Total Cost of Ownership.


The unit is certified like no other sensor on the market, with ATEX, IECEx and SIL approvals.


The long optical path improves detection performances, with an astounding accuracy of ±1%of FS range for readings below 25% of the nominal range and de facto immunity from ambient humidity effects.


The new Point Open Path IR sensor from N.E.T. can be easily integrated in any gas detector: • The unit is a full conformity ATEX and IECEx explosion proof IR detector head for surface applications, SIL2 rated, for certified dependability (fail-safe detection)


• Front thread (¾”, 1” or M20) to be easily mounted on a standard gas detector housing • Standard analogue (voltage/current) or customized output • Digital output with Modbus and UART P2P protocol, Supplied within a compact, weatherproof enclosure with rain cover. Optional dust and hydrophobic filters are available.


For More Info, email: email:


For More Info, email: email:


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N.E.T.’s Microprocessor gas technology When we started


to design our new Infrared technology, we wanted our sensors to be able not just to perform basic routine operations such as powering the IR source and acquiring signals from the detectors. We wanted our sensors to really think by themselves and to make the life of their users easier. We wanted our sensors to truly be smart.


We wanted our sensor to perform tasks such as directly calculate concentrations, compensate it for environmental factors, speak different communication protocols, provide a standardised, linear output, accelerate response time, perform continuous self-checks and raise warnings and alarms. This is when we decided to incorporate a state-of-the-art microprocessor as the core, the brain, of our new line.


-M4 core platform providing all the speed, versatility and computing power we need to bring you the most performing gas detection available in a standard 4- or 7-series size.


Despite the reliability, the speed and the versatility the microprocessor brings to our sensors, it also offers industry-leading low power, maintaining consumptions reduced and allowing us to provide a true low power version for our 20-mm series. Traditionally, sensors with this size (20mm diameter), don’t have on-board electronics and signal processing has to be done on an external board.


For the user, the advantages of having a microprocessor-based sensor are many:


• The sensor has a high-level interface, with a standardized, linear output. This eliminates the time and complexity required to deal with low level signals and calculations


• Communication with the sensor is bidirectional via digital protocols (Modbus and UART The user can not only get readings, warnings and alarms but also change communication parameters and input updated calibration values • Fail-safe operation and dependability are enhanced by several self-checks routines and consistency controls continuously performed by the sensor. This allowed N.E.T. IR line to reach SIL2 Safety Integrity Level (read more about SIL) • Faster response time, with our accelerator algorithm (T90<30s)


• Superior performances at high volumes of concentration, with N.E.T.’s DYNAMIC RANGE TECHNOLOGY.


For More Info, email: email:


AUGUST / SEPTEMBER • WWW.PETRO-ONLINE.COM


For More Info, email: email:


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Today, all our Infrared sensors are based on an ARM® Cortex®


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