MINIATURE CONCENTRIC RING FIXTURE
Contents
1. or any exposed me tallic parts of the PRF 912B fixture or cable assembly when power is applied to the probe CAUTION To avoid electrical shock Do Not Touch the fixture test electrodes test bed or exposed metal BNC connections when power is being applied to the probe c The designed operating voltage limit for normal auditing and laboratory measurements is 100 volts Exceeding 100 volts greatly increases the risk of personnel shock hazards WARNING Never exceed the maximum applied operating test voltage of 100 volts 6 Rev A November 2005 PRF 912B Miniature Concentric Ring Fixture Set d Only qualified instrument repair and test personnel should exceed the 100 volt opera tion limit and then do so only under controlled conditions using maximum precautions against personnel shock e Never under any conditions exceed 500 volts during fixture test or repair B Other Operational Precautions 1 Do Not Use the PRF 912B Micro Probe if it fails to function during its continuity inspection test 2 Do Not Use the PRF 912B Micro Probe if it becomes damaged in any way 3 Only Prostat Corporation authorized qualified repair personnel may open PRF 912B or PRV 913B housing terminal assemblies or perform product repair Unauthorized opening of fixture or instrument housings device tampering or attempted repair will absolutely void product warranty and completely absolve Prostat Corporation its employees suppliers and represen2. terminal of a wide range mea surement instrument via the RG 174 coaxial cable s inner conductor BNC coupler and dual BNC Banana adapter b The outer ring contacts are electrically connected at a common point They apply the test voltage to the material under test during a resistance measurement They are connected to the positive terminal of the wide range measurement instrument via the RG 174 coaxial cable s outer conductor BNC coupler and dual BNC Banana adapter C The fixture s total surface contact diameter is approximately 0 30 inches and is ideal for measuring surface resistance of small areas 0 32 inches or larger 4 Rev A November 2005 Center Electrode Outer Ring Contacts Contact Diameter 0 30 inches Figure 2 Concentric Ring Configu ration lt Overall Length without covers 5 9 Inches 150 mm PRF 912B Miniature Concentric Ring Fixture Set The PRF 912B resistance fixture approxi mates the same measurements obtained when using a standard ESD Associa tion Standard ANSI ESD S11 11 concentric ring fixture Overall size of the PRF 912B is 0 50 inches in diameter by 5 9 inches 150 mm long Figure 3 This optimal size and shape make the fixture very comfortable and easy to handle Its outer housing is made of black anodized aluminum PRF 912B Standard accessories include protective cover one RG 174 cable a BNC banana adapter and instructions Optional accessories include the PRV 913B Dual Fix
3. PRF 912B Miniature Concentric Ring Fixture Set 9 Do Not Drop or cause mechanical damage to these devices Ill PRF 912B Micro Probe amp PRV 913B Verifier Operations A PRF 912B Setup 1 Connect measurement cable to PRF 912B a Remove black rubber protective cover from PRF 912B s BNC connection BNC Connector b Attach shielded cable to the probe s BNC connection Figure 5 Figure 5 Connect shielded cable to PRF 912B s BNC fixture 2 Connect measurement cable to Dual Banana BNC Converter Figure 6 Figure 6 Connect Cable to Banana Con Figure 7 PRF 912B with Cable amp Banana verter Coverter 3 Once the cable and BNC adapter are installed the PRF 912B is ready for continuity test verifi cation and use 4 To use connect dual banana converter to wide range resistance instrument with 74 inch termi nal spacing Flange side of dual banana should be connected to the Positive power terminal NOTE To remove BNC connections apply slight pressure and twist connector counter clockwise 8 Rev A November 2005 PRF 912B Miniature Concentric Ring Fixture Set B Confirming Proper BNC Connections Continuity amp High Resistance Tests The following confirms proper connections by checking continuity of the micro probe against a metal plate then confirms its ability to measure high resistance 1 To confirm general setup and function of the PRF 912B place the electrodes against a clean metal surface For exa
4. the ESD Association s S11 11 Surface Resistance test standard To obtain Figure 1 PRF 912B Miniature Concentric Resistance Fixture Measurement Set with Optional PRV 913B an estimate of ASTM D 257 Surface Resistivity in Dual Verification Fixture ohms square simply multiply the PRF 912 fixture measurement by 10 i e add one order of magnitude A PRF 912B Concentric Resistance Fixture Description This precision fixture is designed in miniature to approximate surface resistance measurements typically obtained with the ESD Association s ESD S11 11 Surface Resistance Standard fixture The PRF 912B however is approximately 1 10th the size of the S11 11 fixture Based on its size the PRF 912B is often referred to as a micro probe 1 Theresistance measurement range of the PRF 912B fixture is 0 9 ohms at 10 volts to 1 0E 12 1 0x10 ohms at 100 volts 2 The miniature concentric fixture consists of a spring loaded 0 10 inch 2 54 mm diameter center electrode surrounded by 10 each 0 06 inch 1 5 mm diameter contact electrodes that electrically form a continuous outer ring Figure 2 Contacts are pogo pin type ATE quality probes made of beryllium Copper coated with 60 microinch of hard Gold a The PRF 912B s center electrode is electrically separated from the outer ring contacts by a high resistance dielectric Teflon The center electrode acts as a current sensor during resistance measurements It is connected to the negative
5. B Miniature Concentric Ring Fixture Set a To accommodate the PRF 912B or 914B center electrode a single gold contact point is positioned at the center of the PRV 913B Verification Test Surface b The center position is connected to the ten individual outer ring race pads by the ten 10 megohm resistors Figure 4 PRV 913B Dual Verifica tion Fixture ll Cautions amp Warnings As with any electrical device use proper electrical precautions and measurement practices to avoid personnel shock Read this manual in its entirety before attempting to use these products NOTE This manual displays Cautions and Warnings alerting the user to hazardous operation and ser vicing conditions CAUTION or WARNING headings throughout this publication flag this infor mation where appropriate Follow all Caution and Warning instructions at all times A Use of Measurement Power Supply 1 The PRF 912B is a high performance micro probed designed for use with a maximum input voltage of 100 volts As such it is capable of delivering an annoying shock to any person touch ing the spring loaded contacts when they are energized a If used with the Prostat PRS 801 Resistance System the current capability of the micro probe instrument combination is limited to a very low typically harmless level However a distinct hazard exists in the operator s reaction to a possible shock b To avoid shock operating personnel should not touch the electrodes
6. MINIATURE CONCENTRIC RING FIXTURE PRF 912B User Manual B PROSTAT Table of Contents PROSTAT PRF 912B MINIATURE CONCENTRIC RING FIXTURE SET Fr eR ECCO NN Er e W peser non 0 e Handling amp Maintenance Warranty Information EE General Specifications Copyright 2012 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 Prostat is the registered trademark of Prostat Corporation PRF 912B Miniature Concentric Ring Fixture Set I Introduction amp Description The PRF 912B Miniature Concentric Resistance Fixture accurately measures surface resistance of small areas It consists of a PRF 912B Concen tric Resistance Fixture shielded cable equipped with BNC connectors and a BNC to male banana con nectors adapter The optional PRV 913B Dual Verification Fixture is designed to confirm the proper operation of the PRF 912B and PRF 922B Miniature Concentric Resistance Fixtures The PRF 912B is designed to work in conjunction with a precision wide range resistance instrument such as the Prostat PRS 801 Resistance System and an insulated test bed e g PTB 920 or equivalent This instrument and fixture combination provides direct surface resistance measurements in ohms generally in accordance with
7. Ten each 0 06 inches 1 59mm diameter at 0 258 inches 6 56mm bolt circle 0 32 inches 8 2mm diameter 3 5 pounds 1 6 kg 0 3 inches 7 8mm BNC with outer source and inner sense connections RG 174 coaxial cable equipped with insulated BNC couplers and BNC Banana adapter for connection to Prostat PRS 801 Resistance System Not applicable Fixture powered by resistance instrument Prostat Corporation Limited one year PRV 913B Dual Verification Fixture Physical Dimensions Fixture Weight Finish Contact Pads Resistors Power Warranty 14 2 0 in x 2 0 in x 0 83 in 50 1mm x 50 1mm x 21mm 5 29 ounces 150 grams Black anodized Copper substrate with nickel and hard gold plating 2 precision 10 megohm resistors total of 10 Concentric Ring Side 2 precision 1 each 10 megohm resistor 2 Point Side Not applicable Powered by PRF 912B during test Prostat Corporation Limited one year Rev A November 2005 Rev A November 2005 NOTES PRF 912B Miniature Concentric Ring Fixture Set 15 PRF 912B Miniature Concentric Ring Fixture Set NOTES 16 Rev A November 2005 Rev A November 2005 NOTES PRF 912B Miniature Concentric Ring Fixture Set 17 PRF 912B Miniature Concentric Ring Fixture Set NOTES 18 Rev A November 2005 Specifications are subject to change without notice All Prostat trademarks and trade names are the property of Prostat Corporation All other tr
8. ademarks and trade names are the property of their respective companies CARRIED BY PROFESSIONALS A PROFESSIONAL STATIC CONTROL PRODUCTS Prostat Corporation Corporate Headquarters e 1072 Tower Lane Bensenville IL 60106 630 238 8883 Fax 630 238 9717 1 855 STATIC1 e www prostatcorp com
9. e springs are not fully compressed against their stops This will insure reproducible measurements 10 Select appropriate instrument test voltage and initiate resistance measurement ESD Associa tion S11 11 test voltage guidelines for measuring packaging materials are as follows a For material resistance measurements of less than 1 0x10 ohms use 10 volts b For measurements of 1 0x10 to lt 1 0x10 ohms use 10 volts c Formeasurements greater than 1 0x10 ohms use 100 volts NOTE For optimal performance and accuracy use the Prostat PRS 801 Resistance System in its AUTOMATIC Mode either Default Mode 1 Ohms or Mode 2 Exponential 1 0EXX Ohms display AUTOMATIC Mode will control test voltage resistance range adjustment and electrification period automatically Rev A November 2005 PRF 912B Miniature Concentric Ring Fixture Set Figure 10 Measurement Illustrations Using the Prostat PRF 912B Fixture IV Handling amp Maintenance 1 Store the PRF 912B in a clean dry environment with both BNC and Probe covers installed for environmental and mechanical protection 2 Periodically remove all spring loaded test pins Clean the spring loaded test probes and Teflon mounting disk with a solution of laboratory grade isopropyl alcohol and a lint less cloth or laboratory quality swab Allow components to dry thoroughly be fore re assembling Pull straight out a Remove each test probe individually by grasping it f
10. irmly then pulling it straight out of its socket b Inspect each probe for damage then clean with the alcohol solution If a probe is damaged i e bent does not compress smoothly or has deep surface scratches replace it with a new probe of the same size and characteristics Contact Prostat Corporation Customer Service for spare replacement probes c Clean and dry the Teflon mounting disk twice to insure cleanliness probe electrode by grasping firmly and pulling straight out of its d Carefully re install the spring loaded test probes and fully re seat socket them in their sockets Rev A November 2005 11 PRF 912B Miniature Concentric Ring Fixture Set p Figure 12 View of PRF 912B Spring Loaded Figure 13 Insert Test Probe into its Socket Test Pins Socket amp Teflon Mounting Disk and Press Firmly to fully seat 3 After cleaning perform Continuity High Resistance and Verifier checks A PRV 913B Dual Verification Fixture 1 Store the PRV 913B in a clean dry environment 2 Periodically clean and dry the gold fixture contact segments twice with a solution of laboratory grade isopropyl alcohol and laboratory quality swab 12 Rev A November 2005 PRF 912B Miniature Concentric Ring Fixture Set V Warranty Information Prostat Warranty Prostat Corporation expressly warrants that for a period of one 1 year from the date of purchase that Prostat instruments will be free from defects in material pa
11. lange side of dual banana should be connect ed to the Positive power terminal This applies test voltage to the 10 outer ring electrodes 2 Remove PRF 912B Probe Cover Figure 8 3 Position PRF 912B vertically into the PRV 913B Verifier with its spring loaded pin electrodes making direct contact with the Verifier s gold plated test segments Figure 8 Remove Probe Cover Rev A November 2005 9 PRF 912B Miniature Concentric Ring Fixture Set 4 Depending on your resistance instrument select D Basic Measurements Using the PRF 912B Micro Probe 1 either 10V or 100V test voltage Measure PRF 912B probe resistance while posi tioned in the PRV 913B Verifier Resistance should be 1 0x10 ohms 1 Place material to be measured on an insulated test bed the clean insulated surface Black la beled side of the PTB 920 or an insulated acrylic plate Figure 9 Insert PRF 912B Fixture into PRV Position the PRF 912B vertically directly over test 913B Verifier and Measure Verifier Resis area and lower it until the spring loaded center tance electrode makes direct contact with the material under test Apply sufficient pressure on the probe until the center and outer spring loaded electrode are partially compressed while in contact with the test material IMPORTANT NOTE Adjust probe pressure to insure that the electrode springs are controlling the probe s con nection with the material s surface and that th
12. mple the plated metal side of the Prostat PTB 920 Dual Surface Test Bed a Hold the PRF 912B vertically and apply pressure to slightly compress the electrodes mak ing positive contact with the metal surface b Activate the wide range resistance instrument to obtain a measurement 1 In the case where the Prostat PRS 801 is the measurement instrument it should measure approximately 1 0 ohm or less 2 With other instruments they should provide a LOW resistance indication For example 10 ohms when using the ESD Check ESI 870 Resistance Indicator or lt 10 ohms when using the PRS 801 Resistance Meter 2 Repeat the above procedure using the clean insulated surface Black labeled side of the PTB 920 or an insulated acrylic plate a Hold the PRF 912B vertically and apply pressure to compress the electrodes making posi tive contact with the insulated surface b Activate the wide range resistance instrument to obtain a measurement 1 In the case where the Prostat PRS 801 is the measurement instrument it should measure 1 0x10 ohms or greater 2 With other instruments they should provide a HIGH resistance indication For example 10 or gt 10 ohms when using the ESD Check ESI 870 Resistance Indicator 3 or approximately 10 ohms when using the PRS 801 Resistance Meter C PRF 912B Verification Using the PRV 913B 1 Connect the BNC banana adapter to the wide range resistance mea surement instrument F
13. rts and workmanship labor If Prostat receives notice of such defect during the warranty period Prostat will replace at its ex pense such parts that it determines to be defective Any defective part must be returned to PROS TAT postage prepaid with proof of purchase date Warranty Exclusions THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER PRODUCT WARRANTIES EXPRESS 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 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 contract negligence or strict liability Fulfillment by Prostat of its express warranty obligations described above will be purchaser s exclusive remedy and will be Prostat s and seller s limit of liability for any breach of warranty or otherwise F Shipping of Warranty Returns 1 Obtain a Return Materials Authorization RMA number and shipping address from Prostat customer service Pack the instrument carefully and ship it prepaid and insured to the proper destination provided by Prostat s customer service department 2 For detailed shipping instructions and Return Materials Authori
14. ta tives of any responsibility liability or other whatsoever WARNING Unauthorized opening of fixture or instrument housings device tampering or attempted re pair will absolutely void product warranty and completely absolve Prostat Corporation of any responsibility liability or other whatsoever 4 Do Not Touch Electrode Surfaces Electrodes will become contaminated with skin oils and salts and may become damaged or rendered inaccurate 5 Do Not Use Or Store PRF 912B or PRV 913B In Damp Environments Always store devices with protective caps in place in a dry environment preferably at lt 2096 Relative Humidity CAUTION Storage or use of these instruments fixtures and devices in damp or wet conditions may cause damage to electrical circuits and contact surfaces which may effect performance or increase the possibility of personnel shock or arc discharge 6 Do not use these fixtures and devices in combustible or explosive environments WARNING Improper handling and use of energized circuits may cause arc discharge which in turn may cause the ignition of combustible materials or fumes Do not use exposed energized circuits in flammable areas 7 Donotattempt to measure energized materials items or circuits with the PRF 912B 8 The PRF 912B is a precision fixture to be operated by experienced personnel familiar in the use and handling of devices employing energized power supplies Rev A November 2005 7
15. ture Verifi cation Reference de scribed below Figure 3 PRF 912B Profile with protective covers removed B PRV 913B Dual Verification Fixture Description 1 Approximately 2 inches 50 1mm square by 0 82 inches 21mm thick the PRV 913B is de signed to confirm the proper function of the PRF 912B PRF 914B and PRF 922B Microprobe Resistance Fixtures It consists of a high quality black anodized housing and circuit board incor porating an array of ten 10 each 10 megohm precision X296 resistors in parallel connecting the center pad to each of the ten peripheral trace pads it provides a specific reference resis Rev A November 2005 tance of 1 0x10 ohms 4596 on the concentric ring side On the other side it consists of a circuit board containing 1 each 1 megohm 196 resistor con necting two peripheral trace pads It provides a specific reference resistance of 1 0 x 10 ohms 1 on the two point side Properly used the PRV 913B insures that all PRF 912B amp PRF 914B spring loaded test probes make defined contact with the refer ence surface It has the capability of providing a 1 meg ohm 1 0x10 ohm reference measurement with a theoretical maximum total variance of 9 5x10 to 1 05x10 ohms Typical reference measurements range from 1 01x10 to 1 03x10 ohms i e equal to or less than 3 error PRV 913B fixture contact surfaces consist of copper substrates finished with nickel and hard Gold plating PRF 912
16. zation RMA contact Prostat Corporation 1072 Tower Lane Bensenville IL 60106 Telephone 630 238 8883 Fax 630 238 9717 C Shipping Non Warranty Items 1 Any Prostat product returned for non warranty repair or calibration requires a Return Materi als Authorization RMA number and should be packaged and shipped as described above and as directed by Prostat s customer service department 2 The following information must be included with the returned product a Description of the problem b Customer s Purchase Order Number amp Prostat s Materials Authorization RMA number c Name telephone number and fax number of individual contact who can provide more information regarding the problem and related application s d Complete return address Rev A November 2005 13 PRF 912B Miniature Concentric Ring Fixture Set PRF 912B amp PRV 913B Miniature Concentric Ring Fixture Set Specifications PRF 912B Miniature Concentric Ring Physical Dimensions Probe Weight Finish Dielectric Material Contact Dimensions Minimum Sample Size Probe Spring Force Test Probe Total Travel Connection Cable Power Warranty Length 5 9 inches 150mm without probe cover 6 5 inches 165mm with probe cover Probe diameter 0 5 inches 12 7mm Probe cover outer diameter 0 63 inches 16mm 1 5 ounces 43 grams Black anodized Teflon Inner Center Contact Probe 0 1 inches 2 54mm Outer Contact Probes
Download Pdf Manuals
Related Search