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Latest update: 04/02/2020 11:27:43

Syrinx Inc.

Please consult us for ACM sensors, atmospheric corrosion, and electrochemical measuring equipment.

We are a group of experts in regard to metal corrosion and have addressed issues of corrosion. By taking advantage of this expertise, we develop and sell sensors and measuring equipment for evaluating corrosive properties, provide consultation on proposals for how to use the products, and build measurement control systems and networks.

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ACM loggers
Principles and overview of ACM sensors
ACM (Atmospheric Corrosion Monitor) type corrosion sensors (generally called “ACM sensors") were developed by Professor Emeritus Tujikawa, the University of Tokyo, Mr. Shinohara, Director of National Institute for Materials Science (NIMS), Professor Motoda, Tokyo University of Marine Science and Technology, and others. These sensors can be used to directly measure corrosion current of metal electrochemically generated by environmental factors. 
You can directly and quantitatively evaluate corrosive properties of an environment by analyzing ACM sensor output.
What is detected by the sensor?
1. Wetness duration
The size of the ACM sensor output varies depending on the rain or condensation. You can use these characteristics to check a wetness duration. 
2. Amount of sea salt deposits
An ACM sensor provides a calibration curve that shows a relational expression between sensor output and relative humidity (RH) by using sea salt deposits on the sensor. You can use this to estimate the amount of sea salt deposits. 
An expression obtained by the calibration curve is approximated by the cube of the relative humidity (RH). Therefore, you need to know the relative humidity (RH) to obtain the amount of sea salt deposits. 
3. Corrosion rate
Since ACM sensor current output and a corrosion rate (log CR) have a linear relationship, you can obtain the corrosion rate by using the daily average quantity of electricity (Q).

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