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Summary of Contents for Prostat PRF-930
- Page 1 POWDER RESISTANCE FIXTURE PRF-930 User Manual...
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Page 3: Table Of Contents
Warranty General Specifications Copyright © 2011 by Prostat® Corporation. All rights reserved. Printed in the United States of America. No part of this manual may be used or reproduced in any manner whatsoever without written permission. For information contact Prostat Corporation, 1072 Tower Lane, Bensenville, IL 60106 USA... -
Page 5: Introduction & Description
Figure 20: Prostat PRF-930 Powder Resistance Fix- ground reference. ture Set The PRF-930 Powder Fixture meets requirements of “Technical Recommendations of National Institute of Occupational Safety and Health JNIOSH-TR-No. 42 (2007) Recommendations for Requirements for Avoiding Electrostatic Hazards in Industry 2007”... - Page 6 Figure 4: Measurement Plate – Outer Sur- face Connections Power Connection Power Plate Power Plate Outer Surface Inner Surface Figure 5: PRF-930 Resistance Fixture Power Plate Rev. A / January 2010...
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Page 7: Resistance Measurement Procedure
. Depending on material characteristics approximately 1.0 tablespoon will be required to completely fill the fixture cavity. Place the mate- rial in the PRF-930 and compress it lightly. Material compression should be limited to the degree that represents the material’s use, transport or storage conditions. - Page 8 Actual procedures and specified conditions may vary between test methods cited by standards bodies in different countries. The PRF-930 was designed in accor- dance with the Recommended Practice for Protection against Hazard arising out of Static Electric- ity in General Industrie, published by The National Institute of Industrial Safety, Japan, Technical Recommendation No.
- Page 9 PRF-930 Advanced Powder Fixture For illustrative purposes, the following procedure is based on resistance measurement protocol developed by the Electrostatic Discharge Association (ESDA) Standards Committee, which is based in Rome, New York, USA. Use other recommended measurement protocol when suitable and avail- able.
- Page 10 Resistance is a measurement, whereas Volume Resisivity is a calculation based on (1) a resistance measurement, (2) fixture dimensions and, (3) material thickness. To convert resistance measure- ments in ohms obtained with the PRF-930 to volume resistivity (ρ) in ohm-cm, we use the follow- ing equation to convert the resistance measurement to resistivity.
- Page 11 PRF-930 Advanced Powder Fixture Sample Calculations While the correction factor (CF) for each fixture is initially determined by Prostat before shipment, tem- perature, humidity, handling and use may slightly modify fixture dimensions. Assuming your fixture is typi- cal of the one pictured here, you can confirm dimensions and correc-tion factor, described below.
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Page 12: Disassembly & Cleaning
4.76 4.52 x 10 IV. Disassembly & Cleaning After use, the PRF-930 should be cleaned before storing. There are several reasons to clean the fixture im- mediately after use: • Prevent contamination of future measurements by previous material residue • Insure the fixture performs at its optimum resistance range, which is approximately 1 to greater than 1.0x10... - Page 13 PRF-930 Advanced Powder Fixture NOTE Dispose of materials in a safe and appropriate manner as recommended by the mate- rial’s supplier. Use caution whenever applying compressed air for cleaning purposes. B. Disassembly The fixture plates are mounted in the acrylic frame us- ing 8 flat head, socket machined screws.
- Page 14 PRF-930 Advanced Powder Fixture Be sure to remove any visible particles and wash the Teflon separator twice with the IPA solution, then dry with the pro- vided micro fiber cloth. Allow the fixture to air dry after clean- ing for an additional 15 minutes before using the fixture for measurements.
- Page 15 PRF-930 Advanced Powder Fixture into the bottom of the frame and thread them into the measurement plate. Do not tighten the screws; simply install them to hold the plate into position. Install the ⅝ inch screws through the vertical segment of the frame and thread into the meas-ure- ment plate.
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Page 16: Warranty
Limit of Liability – in no event will Prostat or any seller be responsible or liable for special, incidental, or consequential losses or damages, under any legal theory including but not limited to con- tract, negligence, or strict liability. - Page 17 PRF-930 Advanced Powder Fixture PRF-930 Powder Resistance Fixture Specifications Basic Description: Acrylic frame fixture with opposing power and concentric ring measurement plates for resistance measurement of small volumes of powder and granulated materials. Correction Factor (CF) is used to convert bulk resistance measurement to volume resistivity in ohm-cm.
- Page 18 PRF-930 Advanced Powder Fixture Rev. A / January 2010...
- Page 19 PRF-930 Advanced Powder Fixture NOTES Rev. A / January 2010...
- Page 20 Specifications are subject to change without notice. All Prostat trademarks and trade names are the property of Prostat Corproation. All other trademarks and trade names are the property of their respective companies. P R O F E S S I O N A L...
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