SIMRAD GD10P - IR GAS DETECTOR - ICEWeb

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142.2.2.2 Retrofit mountingFor retrofit of catalytic sensors an adapter plate is available allowingthe GD10P to be mounted using the same hole pattern as mostcatalytic sensor junction boxes. Refer to section 6.0.2.2.2.3 Retrofit wiringThe GD10P Gas Detector has been designed to be fullyinterchangeable with existing catalytic sensors, using the same 3-wirecable and the same bridge input control modules. This applicationrequires the Bridge Interface to be employed as shown in Figure 2.6below.The Bridge Interface (Simrad reg. no. 109-804511.4) converts thestandard 4 - 20 mA active current output from the GD10P to a bridgesignal input, which is a typical standard for several control modules inuse today. The Bridge Interface operates on a standard 24V DCsupply. The complete Bridge Interface assembly is contained in aplastic housing, which clips onto a standard DIN mounting rail. Thisallows several channels to be interfaced in a space-saving way.NOTE: As signal levels, polarity, loading, stability and fault testingdiffer between manufacturers of catalytic modules, Simrad Optronicsmust be contacted for correct setting of variables in the BridgeInterface.Figure 2.6Bridge interface installation2.2.2.4 Recommended cable typesThe cable selected for interfacing the control equipment should beapproved for use in the actual area.
15It is recommended to use shielded cables.Cables should be of a fine multi-strand type with a cross-sectionbetween 0.5 mm 2 and 1.5 mm 2 .The cable enters the terminal compartment via an EExe cable gland.Several options of gland fittings are available.2.2.2.5 Initial wiring checksAfter wiring as detailed above, and before applying power, ensure that:• +24V DC is connected to terminal l• 0 V DC is connected to terminal 2• Signal output is connected to terminal 3
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 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 26 and 27: 24Converting % LEL to % v/v is base
Page 28: 261 21: Plate Adapter (junctionbox/

SIMRAD GD10P - IR GAS DETECTOR - ICEWeb

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