Air Ion Counter

Model 201A


Air Ion Counter

Air Ion Counter

Measure both of Negative / Positive Ion
(Adopt one of reference value of Ebert system)

Compact body, developed by original structure, for easy carrying


  • Appearance of the product may be different, and design or specification may be changed to be improved without notice.

  • Information is as of December 2002.


Low cost but higher performance or function than any other expensive counters.
Aiming to be a global standard counter
<< Patented in Japan and USA and China >>

  • Measure both of negative and positive ion respectively with one counter by switchover.
    (Adapted a standard value based on Ebert system)

  • A compact and light body by a unique structure

  • A wide range ion amount is countable (Auto-range switching function is available)

  • A precise measurement of low-density negative ion (Lo-mode installed)

  • Rechargeable lithium battery

  • Volume of +/- ion is graphically shown on a display

  • Date, time, humidity and temperature on display

  • 16 bit, CPU, Flash Memory



Specification / Standard


W80mm x L180mm X D35mm


Less than 400g

Applied Voltage

AC100V to 240V

Consumption  (Max)

Less than 2.1 W

Battery Life

2 hours for continuous use (Full charge and no back light use)

Countable Ion

Air ion (+ / - ion)

Size of Ion

Small ion (Nano size)

Measuring Range

10 to 1,236,000 pieces/cc

Measuring Time

Approximately 0.25 seconds/time
(At time of switchover measurement from + ion to - ion or vice versa)

Data Memory

Max. 27,000 data
(Amount of ion, temperature, humidity, time, date)


TN LCD (Back light, semi-transmissive type)

Operational Condition

5 to 35¢XC, Less than 85 RH with no dew condensation


Excellent Technology Co.
Hong Kong: Tel. (852) 2691 3821    Fax. (852) 2900 2980

China: Tel. (86) 150 1799 2655   Fax. (86) 755 3360 9662