SIMRAD GD10P - IR GAS DETECTOR - ICEWeb

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24Converting % LEL to % v/v is based on ISO10156, Second edition1996-02-15: “Gases and gas mixtures - Determination of fire potentialand oxidizing ability for the selection of cylinder valve outlets”.The GD10P is designed for normal atmosphere pressure variation, butit is certified for pressure limits from 86 to 108 kPa.5.3.2 Cross interference to other gasesHydrocarbon gases such as methane, ethane, propane and butaneare absorbing at a signal wavelength of 3.3 μm. These gases do notinterfere at the reference wavelength at 3.0 μm. If the atmosphere tobe monitored contains gases such as acetylene that absorb at thereference wavelength of 3.0 μm, misleading measurements may beobtained depending on the interfering gas concentration. In suchcases, contact Simrad Optronics for information. A modified GD10Pusing another reference wavelength will eliminate these problems.Water vapour, carbon dioxide, oxygen, nitrogen and other gases,which are present in normal air will not influence the measurements.5.4 Gas detection systemSince the GD10P is a point detector, it must be mounted where gasleakage is most likely to occur. It should be considered whether thegas in question is heavier or lighter than air. The number of sensorsrecommended depends on room size, shape, airflow and so on. TheGD10P can also be mounted on or through an air duct wall. For thispurpose, duct mounting kits are available.Due to high reliability and extensive self-testing, the GD10Pdramatically reduces the number of sensors needed, and votingbetween sensors is no longer necessary. As a result, maintenanceroutines can be relaxed without losing system confidence and repairwork is reduced to a minimum.For detailed mounting descriptions, see section 2.1
256. ORDERING INFORMATIONDescriptionGD10P 0-100 % LELMethane 5 sec. sourceOther standard and specialversionsavailable on requestGD10P-UL 100 % LELMethane 5 sec. sourceWeather Protection KitGD10PPartNumber128-810867128-813367499-810913Housing Sample Flow Assy 499-810874Bridge Interface Assy 109-804511Duct Mounting Bracket 599-811086Mosquito Set Assy 499-813397Duct Mounting Flange KitGD10P499-811938
Page 1: SIMRAD GD10P - IR GASDETECTOROPERAT
Page 4 and 5: 5.4 GAS DETECTION SYSTEM...........
Page 6 and 7: 41.2 ConstructionA complete GD10P G
Page 8 and 9: 6- Electrical connection 3 wires (M
Page 10 and 11: 8EN 61779-4/IEC 61779-4EN 50081-1EN
Page 12 and 13: 10In order to achieve minimum respo
Page 14 and 15: 122.1.4 Mounting the GD10PThe detec
Page 16 and 17: 142.2.2.2 Retrofit mountingFor retr
Page 18 and 19: 163. OPERATION3.1 Start-up procedur
Page 20 and 21: 18• If there is an air movement o
Page 22 and 23: 20Figure 4.3Test procedure
Page 24 and 25: 22Refer to Figure 5.2 below.Radiati
Page 28: 261 21: Plate Adapter (junctionbox/

SIMRAD GD10P - IR GAS DETECTOR - ICEWeb

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