Electrochemical gas sensing technology is the center to most law enforcement grade breathalyzers. The essence is to take a constant amount of sample gas and quantify the amount of organic molecules present, in this case, ethanol.
The wafers consist of two platinum electrodes with very high surface area separated by an liquid electrolyte, usually strong acids, held in a porous plastic matrix. The challenge is that the acid dries up at high temperature and/or low humidity, but absorbs moisture from surrounding when the humidity is high. The best situation is drift in output values and the worst is “leakage” of acids onto circuit board, destroying the device.
We offer several solutions to suit different situations and needs. No matter if you are a new developer of innovative devices or existing manufacturer who care about the long term reliability of your products, we have a solution for you.