Air Ion Counter (200 million ions/cc) – IC-AIC200M

The Air Ion Counter is a handheld meter designed to measure ion density the number of ions per cubic centimeter (ions/cc) in air. It measures this number separately for positive and negative ions (+ and ions are usually present simultaneously). This instrument is a true ion density meter, based on a Gerdien Tube (Gerdien Condenser) design, and it contains a fan which pulls air through the meter at a calibrated rate.
This model has a range of 20 million ions/cc making it suitable for most applications, except in measuring very close to electric ionizers or strong radioactive sources.
Analog Output Jack:
Air is sucked in at the top, is measured, and exits at the bottom. The display shows the ion count within 2 seconds and it continues to display the ion density in the air, showing any changes within 2 seconds after they occur. The POLARITY switch determines whether + or ion density is displayed. (In the photo, negative ion density is being measured.) To conserve power, the switch on the right side can be flipped to STANDBY; this turns the fan off and stops the measurement
A rotary offset control fine-tunes the internal amplifier so the display reads zero if no ions are present (or whenever the meter is on STANDBY). No adjustment of this is needed unless the temperature changes significantly. An analog output jack is present, which is useful for long-term automated monitoring. The meter uses a standard 9 volt battery, but an AC adapter and a rechargeable battery system are two options.

– Range/Resolution: 1000-200 million (ions per cc)- Accuracy: +/- 25% of reading- Noise: 100 ions/cc (2 second averaging)- Meter Size: 6.5 x 3.7 x 3.0 inches; 165.1 x 93.98 x 76.2 mm- Weight: 14.8 oz (420 g)- Battery: 9 volt alkaline (around 8 hour life) at maximum