Figure 2. Decay time in seconds from 1000 volts to
100 volts on a 6” x 6” charged plater per ANSI
EOS/ESD S3.1.
Objective:
To observe, test and record performance
levels of ionization units, utilizing readily available
equipment, thereby verifying or certifying calibration.
Equipment Used:
Charged Plate Analyzer (Item 94052)
Procedure:
Following the procedures as outlined in the EOS/ESD
association standard, # EOS/ESD-S3.1-1991, TITLED
IONIZATION on page 12.
The balance of the unit can further be verified by
assuring that there is no residual surface charging on
the ground plain plate of either positive or negative
polarity immediately after the ionizer is shut-off.
The BALANCE of positive and negative ion output can
be adjusted to increase polarity bias by carefully and in
small increments, relocating the position of the vertical
sensor antenna directly behind the faceplate screen.
All other ionizer adjustments are done automatically for
you by the ionizer control system.
Remember:
It is important to verify calibration after any adjustments
and before using your ionizer around sensitive
electronics. Merely repeat above Balance Verification
steps after all adjustments.
TB-5509
Page 2 of 2
ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • (508) 485-7390 • Fax (508) 480-0257 • Website: ESDSystems.com
© 2008 DESCO INDUSTRIES INC.
Employee Owned
Limited Warranty
SPI Westek expressly warrants that for a period of one (1) year
from the date of purchase, SPI Westek Auto-Ion™ Self-Balancing
Ionizers will be free of defects in material (parts) and workmanship
(labor). Within the warranty period, the product will be tested,
repaired, or replaced at our option, free of charge. Call our
Customer Service Department at 909-664-9986 for a Return
Material Authorization (RMA) and proper shipping instructions and
address. Include a copy of your original packing slip, invoice, or
other proof of purchase date. Any unit under warranty should be
shipped prepaid to the SPI Westek factory. Warranty repairs will
take approximately two weeks.
If your unit is out of warranty, call Customer Service at 909-664-
9986 for a Return Material Authorization (RMA) and proper
shipping instructions and address. SPI Westek will quote repair
charges necessary to bring your unit up to factory standards.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF
ALL OTHER PRODUCT WARRANTIES, EXPRESSED AND
IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE WHICH ARE SPECIFICALLY
DISCLAIMED. The express warranty will not apply to defects or
damage due to accidents, neglect, misuse, alterations, operator
error, or failure to properly maintain, clean or repair products.
Limit of Liability
In no event will SPI Westek or any seller be responsible or liable
for any injury, loss or damage, direct or consequential, arising out
of the use of or the inability to use the product. Before using,
users shall determine the suitability of the product for their
intended use, and users assume all risk and liability whatsoever in
connection therewith.
CHARGE DECAY TIME CONSTANTS
Notes: 1) Decay times are from +1000 volts to <100 volts in
accordance with ANSI EOS/ESD S3.1
2) Data taken using full fan speed
ESD TEST SET UP
Static Dissipative Workbench Surface
Charged Plate
1 ft.
IMPORTANT:
Your IONIZER has been designed to minimize effects
of localized static charges. If your processing involves
generation of considerable static charges you may
need more aggressive equipment. SPI has available a
complete line of Ionizing Blowers, Air Guns, Bars and
Overhead Room Systems to meet all ionizing
requirements.
