Sound Detection System

A new microphone Sound Detection System (SDS) is now available from Biosystems as an option on new PosiChek3 computerized performance testers for air-supplied breathing apparatus. Designed to increase test precision by automating the primary audible alarm test, the SDS feature eliminates human error and makes the PosiChek easier to use. The SDS is also available as an upgrade for PosiChek units that are already in use, and an upgrade credit program is in place for users who currently own manual test gauges. The SDS uses a small microphone to automatically detect when the audible alarm starts and stops during testing procedures. This ensures that even if personnel are distracted while performing the alarm test, it will still be performed correctly and yield accurate results. The SDS from Biosystems can be used with both bell and whistle alarms, and will not be adversely affected by ambient noise, such as PASS devices or communications.