发明名称 |
IONISATION DEVICES |
摘要 |
An ionisation detector includes a third (fence) electrode (55) between the counter electrode (53) and the sensing electrode (54). The fence electrode (53) is maintained at or near the potential of the sensing electrode (54) and traps charge movement (electrolytic current) along the detector walls associated with condensation and/or contamination within the detector. In a photoionisation detector, the fence electrode is also adapted to trap photo-induced current originating from the cathode (53). Current drawn from the fence electrode (53) provides a measure of the degree of contamination or condensation within the detector and of lamp efficiency.
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申请公布号 |
CA2467859(C) |
申请公布日期 |
2013.06.11 |
申请号 |
CA20022467859 |
申请日期 |
2002.11.20 |
申请人 |
ION SCIENCE LIMITED |
发明人 |
DEAN, WILLIAM FRANCIS HOULTON;STOCKDALE, MARK JULIAN |
分类号 |
G01N27/62;G01N27/66;G01N33/00 |
主分类号 |
G01N27/62 |
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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