| XP95 IONISATION SMOKE DETECTOR AIR IN THE DUAL SENSING CHAMBERS IS IRRADICATED TO PRODUCE IONS THAT TRAVEL TO THE POSITIVE AND NEGATIVE ELECTRODES, CREATING A CURRENT FLOW. AS SMOKE ENTERS THE OUTER CHAMBER, THE FLOW DROPS AND THE VOLTAGE INCREASES. THE VOLTAGE IS MEASURED AND AN ANALOGUE SIGNAL IS CONVERTED TO DIGITAL FOR TRANSMISSION TO THE CONTROL EQUIPMENT. |
