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Air Ion Counter

Air Ion Counter is a substantial improvement over previously available ion meters, and it can make ion measurement available to anyone. It costs less than one tenth of any other ion meter and is smaller and easier to use, requiring only two 9-V batteries. Despite this, it has the same sensitivity (down to 10 ions per cubic centimeter) of very expensive meters. Due to full electrostatic shielding and a fan throughput of 200 cubic centimeters/sec., it can make accurate readings even in adverse conditions such as gusty winds or strong electrostatic fields.

The Air Ion Counter can be used for the detection of natural and artificial ions. Natural ions include those generated from the decay of radioactive minerals and radon gas; ions generated by fires, lightning, and evaporating water; and ions associated with storm activity. Note that in fair weather at sea level, typical ion counts are about 400 negative and 500 positive ions per cubic centimeter. Before a storm, positive ions increase dramatically. During a storm, negative ions increase.

The Ion Counter can gauge the output and coverage of artificial sources such as ion generators, improperly grounded air conditioning vents, combustion vapor and electrically charged or heated surfaces, and plasma-discharge ions in air and other gases.

Range: 10-1,999,000 ions/cm3.

Accuracy: ?25% for fast ions (mobility
greater than 8x10-5 m/s per V/m, which
is the majority of ions).

Settling time: 10 seconds.

Noise level: 10 ions/cm3 (over a
10-second period).

Ion selectivity : 20x (crosstalk of, for
example, negative ions when measuring
positive ions).

Warranty: Two years.

Batteries (included): two 9-volt transistor radio, life approximately 10 hours on STANDBY,
or 2 hours on MEASURE. "LO BATT" indicates at 7.5 Volts per battery.

More technical information about Air Ions

Air Ion Counter Instructions