发明名称 |
Humidity meter for determining relative air humidity |
摘要 |
The invention relates to a humidity meter for determining relative air humidity, which contains a measuring capacitor arranged in a measuring head and connected to analysis electronics by means of an instrument lead. The instrument lead in this arrangement leads to a measuring oscillator which is arranged in the analysis electronics and via a comparator is connected to a reference oscillator and a reference capacitor connected in parallel. The reference oscillator has, connected in parallel to the reference capacitor, a compensating lead which is arranged parallel to the instrument lead and leads up to the measuring head. The instrument lead and the compensating lead are designed in a similar manner, are permanently connected to one another or are located in a common cable sheath.
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申请公布号 |
DE3521974(C1) |
申请公布日期 |
1986.07.24 |
申请号 |
DE19853521974 |
申请日期 |
1985.06.20 |
申请人 |
KELLER SPEZIALTECHNIK-PYRO-WERK GMBH, 4530 IBBENBUEREN, DE |
发明人 |
BORGMANN, GUENTHER, 4530 IBBENBUEHREN, DE;TEBBE, JOHANNES, 4500 OSNABRUECK, DE |
分类号 |
G01N27/22;(IPC1-7):G01N27/22 |
主分类号 |
G01N27/22 |
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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