发明名称 |
Corrosion monitoring system |
摘要 |
A system for monitoring corrosion in metal by comparing a test sample exposed to a corrosion causing environment and a reference sample exposed to a protected environment. An AC voltage source generates a square wave signal oscillating between ground and voltage Vcc and a filter is positioned to filter the signal to produce a sine wave with no second harmonic component. A voltage-driven current source and inverting amplifier produce a current referenced to 0.5 Vcc to provide an AC current from the drive voltage driven sinusoidally and symmetrically above and below 0.5 Vcc. A transformer steps up the AC current and thereafter transmits the current through the samples to an amplifier for amplifying the current to provide outputs in a ratio representing the degree of corrosion of the reference sample. The system can operate in situ for on site measurement and uses relatively low current to permit long operation.
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申请公布号 |
US7061255(B1) |
申请公布日期 |
2006.06.13 |
申请号 |
US20040997369 |
申请日期 |
2004.11.24 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
FOREMAN DONALD S.;BRAUNLING RUSS A.;WREST DARRYL J. |
分类号 |
G01R27/08 |
主分类号 |
G01R27/08 |
代理机构 |
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代理人 |
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