7.21Attach the flat plate electrode to the 3M™ Charge Analyzer 711. Refer to the owner’s manual for the Analyzer 711 for complete operating instructions.
7.22Place the Analyzer 711 on its side allowing for viewing of the display. Position the Analyzer 711 so that the plate is parallel to the ionizer at a distance of one foot. The plate of the Analyzer 711 should be centered (up & down, left & right) in the air stream. It may be necessary to raise the ionizer from the surface to allow for centering on the Analyzer 711 charge plate. If so, use a block of appropriate height to elevate the Analyzer 711. Please note that the plate must be kept totally isolated from ground and that the edge of the plate should be raised up a minimum distance of 3 in. from the work surface. Reference
7.23Turn on the ionizer at high speed and allow it to run for five minutes.
7.24Charge the plate positive as described in the Analyzer 711 operating instructions for “Static Decay Time” mode. Observe the discharge time indicated on the Analyzer 711. Repeat this step for negative polarity.
7.3Ion Balance
The ionized air blower will stay within an offset voltage of
7.31Position the ionizer and CPM as stated above in Section 7.22.
7.32Turn on the ionizer at high speed and allow it to run for five minutes.
7.33Use a ground wire to ground the charge plate of the Analyzer 711. This will remove any/all residual charge present on the charge plate. If the CPM does not zero, adjust the zero control.
7.34Remove the ground wire and observe the display on the Analyzer 711. The voltage (either ±) observed during this time is the “offset voltage” and is a measure of instantaneous ion imbalances produced by the ionizer.
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