SGX Europe Sp. z o.o. T: +48 (0) 32 438 4778 Building 11 Ligocka St. 103, E: sales.is sgxsensortech.com 40-568 Katowice, www.sgxsensortech.com Poland IR15 Dual Gas Series Datasheet Infrared Dual Gas Sensor for Hazardous Environments (Portable and Fixed Systems) The SGX infrared sensors use the proven Non-Dispersive Infrared (NDIR) principle to detect and monitor the presence of gases. With an infrared source and specific filtering on the pyroelectric detectors mounted inside the optical/gas cavity, individual gases or types of gas can be identified and their concentrations determined. These sensors are suitable for reliable monitoring of gas levels in general safety applications where the sensor size is restricted and require a flameproof enclosure for hazardous environments. The IR15 Series contain two active detector elements for simultaneous monitoring of Carbon Dioxide and Methane or Hydrocarbon mixtures in the same size housing as some of the single gas sensors from the IR1xxx series sensors, making the sensor more cost effective than two separate sensors. OPERATION APPLICATIONS To operate, the sensors must be interfaced to a suitable circuit for power supply, output amplification and signal Oil & Gas Utilities processing. Sensor outputs require linearisation and Petrochemical Steelworks compensation for ambient temperature variation using Biogas Confined Space Entry algorithms in the system firmware. This is necessary for Wastewater Indoor Air Quality sensors to meet their full performance specification. An embedded temperature sensor facilitates this compensation FEATURES on certain types. Further compensation for pressure changes can also be made in an algorithm, provided there is a For detection of the following gases: suitable input from a pressure sensor. o Carbon Dioxide & Hydrocarbons, o Hydrocarbons Mixtures A set of Application Notes is available from the SGX Gas concentration ranges: Sensortech Ltd website, to explain more about NDIR gas o 0 - 5% Carbon Dioxide sensing and provide advice for the end-user on interfacing (also suitable for 0 to 0.5%v/v) the sensors and processing signals. o 0 - 100% Carbon Dioxide (also suitable for 0 to 10%) TECHNICAL SPECIFICATION o 0 - 100%v/v Hydrocarbons (also suitable for 0 to 100%LEL) Mechanical 19mm sensor height Dimensions See Outlines Embedded thermistor for improved temperature compensation Body material Stainless Steel Diffused gas sampling via mesh Approximate Weight 35g Low power Reference channel for self-compensation Environmental Special gold plated optical gas cavity for stable signal Ambient temperature range levels for operation: -20C to +55C Operational in varying temperature, pressure and storage: -20C to +55C humidity Fast response Operational pressure range 30kPa to 130kPa Rugged stainless steel construction Humidity range for operation 0 to 95% RH No moving parts and storage (Non-condensing) Immunity from poisoning Reliable fail-safe operation Electrical Certified: ATEX, IECEx, CSA and UL DC supply to detectors 3V to 5V Typical power 180mW 5V IR Source Supply +5V, 60mA (Recommended) (Square Wave at 4Hz, 50% duty cycle) Whilst SGX has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and also reserves the right to change the specification of goods without notice. SGX accepts no liability beyond the set out in its standard conditions of sale in respect of infringement of third party patents arising from the use of SGX products in accordance with information contained herein. In case of modification of the product, SGX disclaims all liability. SGX Europe sp .z o.o. Poland REGON: 362332227 DS-0249, Issue 1, 13-Oct-2016, Page 1 SGX Europe Sp. Z o.o. T: +48 (0) 32 438 4778 Building 11 Ligocka St. 103, E: sales.is sgxsensortech.com 40-568 Katowice, www.sgxsensortech.com Poland CONFIGURATIONS Target Gas 1 Target Gas 2 Sensor Concentration Range * Concentration Range * Application(s) Type Gas Gas Highest Lowest Highest Lowest Oil & Gas IR15TT Petrochemical Wastewater 0 to 5% 0 to 0.5% Steelworks Confined Space Entry IR15TT-M Carbon Dioxide Indoor Air Quality Hydrocarbons 0 to 100% 0 to 100%LEL IR15TT-R 0 to 100% 0 to 10% Biogas IR15TT-D Hydrocarbons 0 to 100% 0 to 100%LEL Utilities * The Highest Concentration Range is the highest range the sensor is suitable. The Lowest Concentration Range is the lowest range the sensor is suitable. The use of the sensor beyond these ranges will affect the sensors performance. IR15TT The IR15TT can be used in all applications for general monitoring of both relatively low concentrations of carbon dioxide and simultaneous %LEL and %v/v concentrations of Group II hydrocarbons, including benzene. The sensors contain a broadband hydrocarbon detector which are cross sensitive to most hydrocarbons and can therefore be calibrated to a specific target gas or a number of gases that can then be selected in the configuration of the customers gas measurement instrument. IR15TT-M The IR15TT-M is very similar to the IR15TT except that a narrowband hydrocarbon detector is used. The sensor can still be used to monitor the same levels of carbon dioxide and hydrocarbons but are unsuitable for the detection of benzene. The narrowband detector also has a slightly lower response to humidity than the IR15TT, but is generally more cross-sensitive to other hydrocarbons. IR15TT-R The IR15TT-R was designed specifically for Biogas applications for the simultaneous detection of carbon dioxide up to 100%v/v and %LEL and %v/v concentrations of hydrocarbons, but can be potentially used for other applications. The IR15TT-R contains the narrowband detector which is unsuitable for the detection of benzene. IR15TT-D The IR15TT-D is fitted with both the narrowband and broadband hydrocarbon detectors with differing centre wavelength and bandwidth to potentially differentiate between hydrocarbons. The sensor was designed for the gas instruments being used by utilities companies to help differentiate between different compositions of natural gas. HANDLING PRECAUTIONS 1. Do not allow sensors to fall on the floor. This could cause IR Source filament breakage, damage to the pins and the gas entrance aperture. 2. Do not apply mechanical force against the gas entrance aperture. 3. Do not immerse sensors in water or other fluids. 4. Protect the gas entrance aperture against dust ingress and sprayed materials. 5. Anti-static handling precautions must be taken. SGX Sensortech 2016 Document subject to disclaimer on page 1 DS-0249, Issue 1, 13-Oct-2016, Page 2