Click for large photo

Patent:ZL00101248.7

 The model DLY-5 Air Ion Counter is designed for measure the  concentration of positive and negative ions per cubic centimeter. It can discriminates the negative and positive ion simultaneously. With the  new development of  the Gold Plated air ion collector  instrument keeps a  very high effect in converting the electric charge into the ion current in the collector. The Auto Zero technology makes this instrument very easy to operate and is more effective, accurate and stable. This instrument can be supplied by a build-in battery or by outer DC supply or AC line. When working  with AC line the build-in battery is charged automatically. Also, it may be charged by the car. So, it is really very convenient to those field-work measurement. 
Now, DLY-5 has become a very useful  instrument to the researchers in many scientific fields as medicine, biology, climatologic, environment, industry etc.