14 Gas Detection NET New Advanced NDIR Head – Point Open Path


N.E.T. strategy is to keep adding new technologies to its product portfolio. We are already competent in IR technology and we have developed the new Point Open Path IR and laser sensors, that will be even more selective and accurate.


POP-S-IR (Point Open Path) is the new entry in IR family, that NET will launch during Sensor+Test 2017 in Nurnberg. It has been specifi cally developed to have fast response time (≤7 s) and high immunity to humidity changes.


POP-S IR sensor head is equipped with incorporated electronics and fi rmware, in order to provide an output that is linearized and temperature compensated, specifi cally suited for instrument manufacturers without any prior knowledge in IR technology. It is available with standard voltage output [0.4 V—2 V] dc, with a customised output or with 4-20mA current output.


The main features are: · Full conformity ATEX and IECEx explosion proof IR sensor head for surface applications · Analogue voltage standard, customised output or 4-20mA current output · Supplied with RAIN COVER · Fast response ( T90 ≤ 7 s ) · Solid, rugged construction · Wide operating temperature and humidity range SIL2 (TÜV approved)


The POP-S – IR BLACK BODY version is particularly suitable for refrigerants gases. For More Info, email:


Stay Active in Gas Detection with the new IR DYNAMIC


RANGE SENSOR from N.E.T The New Dynamic sensor introduced by N.E.T. is designed to meet the necessity of costumers for a more accurate detection of Methane over 0-100%Vol range using the technique of NDIR (Non Dispersive Infrared).


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Integrated electronics and factory calibration, of DYNAMIC sensor provides an output linearised and temperature compensated to reach the highest sensing accuracy ever seen on an IR Methane sensor.


DYNAMIC sensor also provides an optional digital output linearised and temperature compensated to detect Propane over 0-2.1% Vol range, which is the best choice for detection of other hydrocarbons using a cross-reference factor.


Digital, analogue or both output can be used to monitor the functionality. By using digital communication, concentration and status of the sensor can be easily monitored for a fast check of the system, while analogue output offers the fastest and easiest way to check the gas concentration.


Rugged, fast, fl exible and easy to use, DYNAMIC sensor is suited for instrument manufacturers who needs to detect Methane and Propane in compliance with Chinese Mine standard.


The main features are:


· High sensitivity for superior accuracy over 0-100% Vol range of Methane · Resolution of 0.01%Vol over 0-100% Vol range · Dual gas digital output (Methane + Propane) · Analogue (voltage or pellistor) standard output for Methane or Propane · ATEX & IECEx certifi ed NDIR sensor · Fast response


· Chinese Mine standard compliant · Wide operating temperature and humidity range SIL2 (TUV approved)


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Landfi ll Gas (LFG) is the product of microbiological decomposition of land-fi lled waste. The bacteria thrive under anaerobic conditions and turn complex organic compounds found in waste matter into primarily Methane and Carbon Dioxide. LFG is approximately 50- 55% methane and 40-45% carbon dioxide.


ETG’s 6900 P, a portable Laser Gas Detector (LGD) based on Tunable Diode Laser Spectrometry (TDLS), provides a solution to many gas detection challenges in landfi ll emission monitoring and process control. This technology offers unique advantages like precise optical, contact-less measurements, excellent target gas selectivity and sub ppm-level detectivity.


The TDLS technology is enhanced for gas detection, where a 0.1 nm narrow bandwidth diode laser beam is scanned across an absorption band of the target gas, performing a high-resolution near-infrared absorption measurement. Electronic lock-in technology allows separating the gas absorption information from electro-optical system information, leading to a detection method eliminating the need for a physical reference channel.and offering continuous sensor status monitoring. The ETG 6900 P thus present a clear alternative to current sub-optimal detection solutions and combine precise with high target gas selectivity, calibration-free operation, low-cost-of- ownership and easy use by the customer.


The ETG 6900 P analyser is powered by Li-ion battery and can be used without an AC power supply. It can be used for measurement of the concentration of CH4


, CO2 , and NH3


sample gases. Main features are: Very fast CH4


in , CO2 , NH3


detection, internal sample pump, robust case for portability, zero & span calibration, continuous sensor status monitoring, low cost-of-ownership, touch screen monitor, ethernet and USB, modbus, profi bus and ethernet output, arm processor based, and digital input/output.


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IET May / June 2017 www.envirotech-online.com


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Applications include natural gas networks, landfi ll surface emissions and methane leaks.


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Portable Laser Gas Detector for Landfi ll CH4


, NH3 and CO2 Monitoring


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