ELECTRICALLY OPERATED SMOKE

Brand	Owner (click to sort)	Address	Description
ALPHA-LARM	HOCHIKI AMERICA CORPORATION	7051 Village Drive, Suite 100 Buena Park CA 90621	ELECTRICALLY OPERATED SMOKE, FIRE, AND BURGLAR ALARMS;
HA	HOCHIKI AMERICA CORPORATION	7051 Village Drive, Suite 100 Buena Park CA 90621	ELECTRICALLY OPERATED SMOKE, FIRE, AND BURGLAR ALARM DEVICES;THE DRAWING IS LINED FOR THE COLOR RED.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method for calibrating a smoke detector includes adjusting the sensitivity of the smoke detector to get a consistent predetermined response over the expected operating range. The sensitivity is generally consistent for all detectors and an independent offset value is determined for each detector. This offset value basically corresponds to the signal from the detector in a clean atmosphere. The sensitivity of the smoke detector is determined by measuring the response at different levels of obscuration and then appropriately adjusting the output of the light source of the detector. This process is repeated until the desired sensitivity is achieved. Thereafter, the offset value is measured or calibrated and stored in the smoke detector for use in setting alarm values.