Ionisation detectors in the balance

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      <subfield code="c">John Reed</subfield>
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      <subfield code="a">Automatic fire detection systems depend on a fine operating balance. On the one hand they must be sensitive enough to detect a real fire quickly, whilst on the other hand ignoring a wide range of phenomena not associated with a true fire condition. There is often little tolerance between successful detection of an impeding disaster and the time-wasting and often costly mistake of a false or unwanted alarm</subfield>
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      <subfield code="a">Detectores iónicos</subfield>
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      <subfield code="g">nº 291, july-august 1996 ; p. 14-15</subfield>
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