SIMRAD GD10P - IR GAS DETECTOR - ICEWeb

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.