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公开(公告)号：US5926098A
公开(公告)日：1999-07-20
申请号：US740203
申请日：1996-10-24
CPC分类号： G08B17/113 , G08B17/10
摘要： An aspirated-type detector includes a housing with an internal ambient condition sensing region and a sensor carried therein. The housing is perforated with ambient atmosphere inflow ports. A fan or similar device lowers the pressure in the internal region thereby producing a positive inflow of adjacent, external ambient atmosphere into the sensing region. Alternatively, the fan can be operated to inject exterior ambient atmosphere into the sensing chamber under positive pressure. The fan can also be modularized. The detector can incorporate control circuitry for supervisory or signal processing purposes.
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公开(公告)号：US6166648A
公开(公告)日：2000-12-26
申请号：US292140
申请日：1999-04-15
CPC分类号： G08B17/113 , G08B17/10
摘要： An aspirated-type detector includes a housing with an internal ambient condition sensing region and a sensor carried therein. The housing is perforated with ambient atmosphere inflow ports. A fan or similar device lowers the pressure in the internal region thereby producing a positive inflow of adjacent, external ambient atmosphere into the sensing region. Alternatively, the fan can be operated to inject exterior ambient atmosphere into the sensing chamber under positive pressure. The fan can also be modularized. The detector can incorporate control circuitry for supervisory or signal processing purposes.
摘要翻译： 吸气型检测器包括具有内部环境条件感测区域的壳体和其中携带的传感器。 外壳穿过环境大气流入口。 风扇或类似设备降低内部区域中的压力，从而产生相邻外部环境大气的正向流入感测区域。 或者，可以操作风扇以在正压力下将外部环境大气注入到感测室中。 风扇也可以模块化。 检测器可以包含用于监控或信号处理目的的控制电路。
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