Gas Detection 49 CoGDEM Comment - Gas


Detection Standards CoGDEM is the Council of Gas Detection and Environmental Monitoring, a trade association with a membership of around sixty companies involved in the gas detection industry. We are pleased to have ILM/ETP (the publishers of this IET magazine) as an Associate Member, so we now place a regular column of news from the gas detection industry in IET magazine.


A key reason for manufacturers of gas detection equipment to join a trade association such as CoGDEM is to be involved in the creation and modifi cation process for the range of international standards that apply to the gas detection industry. For example, if a manufacturer of an oxygen detector wanted to suggest an amendment to an existing standard that governs the performance of oxygen detectors, that company cannot join the committee or Working Group for that standard in case there might be a confl ict of interest. However, if the company is a member of a trade association such as CoGDEM, they can have their experts attend Working Group meetings or be committee members to represent the industry as a whole, not just their own company.


This representation is not just through the UK gas detection committee EXL/31/1 (with BSI providing the Secretariat), but globally. Currently very active, the two European (CENELEC) gas detection committees TC 216 and SC 31/9 both have strong CoGDEM representation. TC 216 predominantly deals with gas detectors used in the domestic area, such as carbon monoxide and natural gas alarms and combustion gas analysers used by heating engineers. In contrast, the scope of SC 31/9 is gas detectors used in the workplace, either for the protection of the workers or the plant.


As an example of the important standards which are under review by these CENELEC committees, EN 50104 governs the performance requirements and test methods for oxygen detectors, and this was briefl y discussed at the February 2017 CoGDEM meeting before it is further discussed at the EXL/31/1 meeting at BSI in April. The subsequent CENELEC committee will then form an opinion on the need for an update to this standard when it meets in Madrid in May 2017.


CoGDEM members can also be involved in the creation of global standards, through the IEC TC31 committee, and a large amount of work is now underway to create IEC 62990 as a global standard for the performance and testing of toxic gas detectors. The European experts on the IEC Working Group will be actively ensuring that this IEC standard is compatible with the existing European standard EN 45544 so that manufacturers and test laboratories fi nd similar requirements no matter where in the world toxic gas detectors are being designed and tested.


At CoGDEM meetings, member companies discuss the current landscape of standards and whether there are any gaps in coverage. As technology advances, standards need to evolve to take into account new techniques or improved gas detection performance. CoGDEM members will shortly be able to join a Working Group to create a new standard to cover the usage of ultrasonic-based detectors. These are used near high pressure gas pipelines so that leaks can immediately be ‘heard’ before the gas concentration builds up to a point where conventional gas detectors would be effective.


For More Info, email: email:


For More Info, email: email:


41995pr@reply-direct.com 4-Gas Semi-Fixed Monitor – Where to use it?


Or maybe easier: Where you could not use it? The AirWatch by 7Solutions is a 4-Gas Semi-Fixed Gas Monitor that is suitable for almost every application. Switching Machines: The AirWatch can monitor multiple zones, such as refi neries, where large areas need to be monitored for Explosion hazards and/or H2S. If it detects a hazard it will immediately notify the operator and turn off the machinery. It is even possible to turn multiple machines on/off in case of an alarm. For instance - Generators, Breathing Air Compressors, Welding Machines, etc.


Area Monitoring: With a battery pack that works for 8 days continuously, built in a practical wheeled suitcase, the AirWatch can be used as a mobile stand- alone unit for monitoring the area and shows gas hazards by giving an audio/visual alarm.


Fence Line Detection: In case of a toxic gas cloud at a chemical plant, fence line detection might be the solution to get warned timely to inform the local governmental body accordingly. In case of using the AirWatch, 7Solutions can also provide customised Solar Panels as a possible power source.


24/7 Monitoring: The strong in-built pump that comes with a 1 year warranty, allows the AirWatch to be used as a fi xed gas detector. It is easily being attached to any metal object with the magnets on the back, or screw it to the wall.


Fumigation: It is now possible to wirelessly monitor your PH3 fumigation, by placing several AirWatch units on different locations in a multi levelled building. Other applications: Tunnelling (CO2


For More Info, email: email:


Sensitron has developed the innovative Hybrid gas detector, Atex and SIL2 (3) approved. In the gas detection for tough environments is now available an innovative alternative which compares the signals received from two different sensors (Pel+IR) installed in a single head setting the improper alarms apart. The Sensitron’s SMART S-IR is an innovative concept in the gas detection for the Premium Safety market. The detector uses a hybrid technology sensor (Pel+IR) installed in a single head. The behaviour of the sensors is constantly monitored by a microprocessor and the incoming signals are compared in order to supply an output corresponding to the worst situation revealed in the shortest time: it guarantees the highest accuracy with false alarm conditions close to zero. The other important features of the SMART S-IR are: a non-intrusive calibration; 3 wires 4-20mA output with a further three relays output and the HART communication module (optional). The SMART S-SS and the SMART S-MS belong to the same family. The SMART S-MS is a double-head detector and two different sensors (Pel-IR; IR-IR; Pel-Electrochemical; Electrochemical-Pel) can be installed on it. It guarantees two different independent outputs that can be compared. The detectors are SIL 2(3) certifi ed in compliance with EN50402/EN61508. Visit our website at www.sensitron.it


For More Info, email: email:


Advanced Multifunction Gas Detection System


For More Info, email: email:


For More Info, email: email:


The GALILEO SMS (SIL Multisystem), from Sensitron, is an advanced multifunction gas detection control panel designed to comply with the SIL (Safety Integrity Level) requirements, according to the European Standard EN 50402 and IEC 61508 on Functional Safety. The functional safety is aimed at supervising and managing the behaviour of an overall system in case of failures. To assure a full redundancy, the control unit’s main board is designed around 2 powerful microprocessors that communicate to each other the monitored data, ensuring the complete availability of all main board functions even in the case of a failure in one microprocessor. A broad range of self-testing facilities are implemented to detect and localise possible faults. The redundancy offered by every module being


part of the system, added to the possibility to communicate with remote input/output modules via a redundant closed BUS, makes this system comply with the Functional Safety requirements up to SIL3. The GALILEO SMS consists of a control unit, used for monitoring and controlling, connected to an optional number of Analogue Input Modules (AIM), LOOP modules and RELAY modules. The system will be connected in two digital RS485 (EIA-485) type closed loops capable of accommodating a maximum of 256 gas detectors connected as addressable gas detectors type SMART3G or SMART3 “S” connected via 32 input loop modules or analogue 4-20mA detectors connected through 8-input AIM (Analogue Inputs Modules), and a maximum of 520 relay outputs connected as 512 programmable relays on the Relay Outputs modules (8-16 relays module, basic and extended respectively).


For More Info, email: email:


For More Info, email: email:


31229pr@reply-direct.com 17774pr@reply-direct.com , CO O2 , NO) – Water purifi cation (O3 42208pr@reply-direct.com Innovative Hybrid Gas Detector ) – Sewage monitoring (H2 S, O2 , LEL) – and much more.


For More Info, email: email:


For More Info, email: email:


7674ad@reply-direct.com www.envirotech-online.com IET March / April 2017


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  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84