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1.0 INTRODUCTION
The Model 204 Charged Plate Analyzer is a fully functional charged plate
monitor that combines the ETS Model 212 Static Meter with a ±1200V low
current power supply, timing circuit and a removable charged plate detector.
The Model 216 Portable Charged Plate Monitor Kit contains the necessary
accessories that provide a convenient and economical approach to performing
electrostatic measurements requiring a charged plate monitor. The Model 204
meets the requirements of ESD STM3.1-2000, Ionization and ESD SP3.3-2000
Periodic Verification of Air Ionizers and SAE 1645 plus most other specifications
requiring a charged plate monitor.
The standard Model 204 has a 60 second timer, however, when used to test the
dissipation time of automotive fuel system components as specified in SAE
J1645 the optional 6 second timer version is required.
This manual covers both the Model 204 alone and as part of the Model 216
Kit.
Typical charged plate tests consist of measuring ionizer balance and
neutralization time, static propensity of floors and footwear, triboelectric charge
evaluation of material, static dissipation plus evaluation of the effectiveness of
personnel grounding systems. In addition, removing the detachable charged
plate detector from the Model 204 converts it to an electrostatic fieldmeter.
1.1
Model 216 Charged Plate Monitor Kit
The standard Kit consists of the following instruments and accessories:
1.
Model 204 Charged Plate Analyzer
2.
Plug-in 6" x 6" (152x152mm) Detector Plate
3.
Model 256 Utility Wiring Verifier with electrical ground banana jack
(North American Std only. Omitted in kits destined for locations
using 220-240 VAC.)
4.
Tripod
5.
10' coiled ground cord with clip
6.
Model 5646A Humidity/Temperature/Dew Point Indicator
The Kit is housed in a soft shell zippered case that measures 12"W x 8"D
x 4"H (300x200x100mm).
2.0 EQUIPMENT DESCRIPTION
This section provides a detailed description of the Model 204 plus each of the
instruments and adaptors included in the Model 216 Kit.
2.1
Model 204 Charged Plate Analyzer
The Model 204 Charged Plate Analyzer, shown in Figure 2-1, is a
compact
8"Lx2.4"Wx0.9"H (203x146x229mm) and weighs only 9 oz. (255gm). It
incorporates many of the features found in CPA's much larger in size and
"pocket
size"
charged
3
plate
analyzer
that
measures
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