发明名称 |
TESTING A FIRE DETECTOR SENSOR |
摘要 |
<p>A method is disclosed for testing the functionality of a sensor (1) of a fire detector during operation thereof. The method comprises applying a current-limited test signal to the sensor (1), the test signal being such that the impedance of the sensor is such as to absorb the current-limited test signal when the sensor is operating normally; and applying the output of the sensor to a test signal detector (7). The arrangement is such that the test signal passes the output terminal of the sensor (1) only when the sensor is not operating normally.</p> |
申请公布号 |
WO2005106822(A1) |
申请公布日期 |
2005.11.10 |
申请号 |
WO2005GB01641 |
申请日期 |
2005.04.29 |
申请人 |
BENNETT, STEVE;THORN SECURITY LIMITED |
发明人 |
BENNETT, STEVE |
分类号 |
G01N27/416;G08B29/04;G08B29/12;G08B29/14;(IPC1-7):G08B29/14 |
主分类号 |
G01N27/416 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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