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b.
Use the auxiliary work surface common point ground
i.
Mount the 10mm male common point ground snap directly to the 10 mm
female snap located on the back of the PFM-711B’s case.
ii.
Attach the common point ground cord to a previously tested ground point.
4.
Select the range you wish to use for auditing the ionizer’s decay performance. NOTE: Most
accurate decay time measurements are obtained using the analog output connected to a PGA-
710B Autoanalysis System or a PDT-740B Decay Timer.
a.
Select the V/inch range on the PFM-711B Field Meter and zero (0) the unit, ±2 volts to
ground. This will provide the most precise voltage indication. However, the instrument
meter indication is dampened so that time of decay will be slower than actual decay
time.
b.
Select the kV/inch range on the PFM-711B Field Meter and zero (0) the unit to ground.
This will provide good indication and result in a faster decay time because the meter
dampening is less pronounced. The instrument meter indication is dampened in this
range so that time of decay will be slower than actual decay time.
c.
For accurate decay times that are documented, perform this procedure with the
analog output of the PFM-711B Field Meter connected to the input of a PGA-710B
Autoanalysis System. After charting the charge and decay process, calculate the actual
decay time based on the chart speed of the plotter.
5.
Position the sensing surface of the CPM-720B Charge Plate perpendicular to the ionizer’s air
flow, approximately 12 inches from its front air outlet
a.
Hold the instrument combination so that the CPM-720B Charge Plate is in the airflow;
minimize the airflow to the PFM-711B’s meter case.
b.
Make sure good contact is made with the PFM-711B’s ground snap.
6.
Allow the PFM-711B/CPM-720B combination to stabilize in the ion air flow for a minimum of
30-45 seconds and note the ion off set voltage.
7.
Install the Charging Wand in the front of the PCS-730 Charging Source. Ground the PCS-730B
Charger by making direct contact with the metal snap located on the back of its case.
a.
To charge the wand to >+1.0kV press and hold the
button switch
