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Summary of Contents for Electro-Tech systems 235
- Page 1 INCLINED PLANE MEASUREMENT SYSTEM Model 235 Operating Manual 7/08...
- Page 2 A Series obtained from Mil Std 883 is shown in Figure 1.0-1. The apparatus required to perform this test utilizes both basic measuring instruments and several accessory items. The ETS Model 235 Inclined Plane Measurement System is a complete system specifically designed to perform the Inclined Plane Test defined in ESDA ADV11.2 Appendix B (large cylinders-std,...
- Page 3 Figure 1.0-1: Triboelectric Series (Mil Std 883 Version)
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Page 4: Equipment Description
2.0 EQUIPMENT DESCRIPTION The standard Model 235 Inclined Plane Measurement System is supplied with all the components listed in Section 1.0. However, the System can be ordered with optional or deleted accessories as required. The following are descriptions of the... - Page 5 specimens. The release mechanism is activated manually by slightly rotating the knob located on the side of the plane. The System is supplied with 8 magnetic stainless steel specimen holders with strip magnets to mount thin specimens. This is sufficient to handle most testing requirements that usually require either 3 or 6 specimens.
- Page 6 Figure 2.2-1: Model 230 Nanocoulombmeter The rear panel consists of the battery compartment, optional 115 VAC Power Module input jack, a GROUND terminal for referencing the instrument to ground, a remote READ/ZERO output jack, and a Recorder Output BNC connector. The foot operated READ/ZERO switch plugs into the remote READ/ZERO output jack on the rear panel.
- Page 7 Figure 2.1-3: Faraday cup mounted in holding fixture 2.3 Ionizer A balanced AC ionizer is included to neutralize the charge on the test specimen and the Teflon and Quartz cylinders prior to making a measurement. The ionizer emits both positive and negative ions. An object with a positive static charge will draw negative ions from the airflow out of the ionizer.
- Page 8 2.5.1 Automatically Controlled Humidity Chamber The ETS Model 5506 Humidity Control Chamber along with the ETS Series 5000 Automatic Humidity Controller (not shown), shown Figure 2.5-1, provides controlled humidity environment of 12 +/- 3% R.H. required. Figure 2.5-1: Controlled Environment Chamber 2.5.2 Ion Balance Detector This test requires an ionizer with a balanced ion output.
- Page 9 3.0 SET-UP Inclined Plane The Inclined Plane is shipped completely assembled, but with the plane section and the legs in a folded position. Spread the leg of the tripod base to the fully opened position. Loosen the wing nut on the face of the nomenclature panel and adjust the plane to the desired angle.
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Page 10: Operation
4.0 OPERATION 4.1 Sample Preparation The Inclined Plane Measurement System utilizes 4” x 12” (102x305mm) test specimens. Cut samples to this size and mount the required number of specimens (usually, either 3 or 6 specimens per each sample type) to the sample holders using the ½... - Page 11 The cylinder surface must never be handled or touched by any object. If a cylinder must be touched, the metal tongs should be used and then only the ends should be touched. Place the Teflon cylinders into one stainless container and the Quartz cylinders into the other container.
- Page 12 Take the tongs and grab the sides of the cylinder and remove it from the Faraday cup. A cylinder can generally be reused 3 times. However, if the test sample has a surface treatment that can transfer to the cylinder, such as pink poly, then the cylinder should only be used once.
- Page 13 Figure 4.3-1: Sample data sheet 5.0 CALIBRATION The only components of the Test System that require calibration are the Nanocoulombmeter and the ionizer. Nanocoulombmeter Calibration The Model 230 Nanocoulombmeter is calibrated at the factory using instrumentation traceable to N.I.S.T. Periodic recalibration of any measuring is strongly recommended.
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Page 14: Maintenance
Balance Problems”. 6.0 MAINTENANCE The Model 235 Inclined Plane Measurement Test System requires a minimum of maintenance. However, when servicing the individual components, normal care and safety precautions should be adhered to. If any piece of equipment must be returned to ETS for service or recalibration, a Return Material Authorization (RMA) must first be obtained. -
Page 15: Specifications
Accuracy: 2.0% full scale (max), ±1 digit Overall dimensions: 4” dia.x6”H (102x152mm) Readout: 3½-digit LCD, ½" (12mm) numeric Model 235: System includes the following: Drift: <0.05nC/minute Model 236 Inclined Plane, 8 Sample Holders, Zero: Front panel or optional foot switch. -
Page 16: Warranty
8.0 WARRANTY Electro-Tech Systems, Inc. warrants its equipment, accessories and parts of its manufacture to be and remain free from defects in material and workmanship for a period of one (1) year from date of invoice and will, at the discretion of Seller, either replace or repair without charge, F.O.B.
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