Multi Sensor Detectors

The Context and XP95 multisensor detector contains associate degree optical smoke device and a semiconductor temperature sensor whose outputs are combined to administer the ultimate analog worth.

The multisensor construction is comparable to it of optical detector however uses unique lid and optical moldings to accommodate the semiconductor temperature device. The sectional read (below) shows the arrangement of the optical chamber and semiconductor.

The signals from the optical smoke device and also the temperature sensor are freelance and represent the smoke level and also the air temperature severally within the neck of the woods of the detector. The detector’s microcontroller processes the 2 signals. The temperature signal process extracts solely the rate of rising data for combination with the optical signal. The detector won’t reply to a slow temperature increase – albeit the temperature reaches a high level. an outsized unexpected amendment in temperature will, however, cause associate degree alarm while not the presence of smoke, if sustained for twenty seconds.

The process algorithms within the multisensor incorporate drift compensation. The control board should not have a drift compensation formula enabled.

The sensitivity of the detector is taken into account the optimum for many general applications since it offers a sensible response to each smoldering and flaming fires. Note: in-place testing of the multisensor ought to be administrated as for smoke detectors.