Can you measure cloth samples using a concentric ring with an electrode in surface resistance mode?

May 6th, 2015 No comments

The challenge of measuring fabrics is that it is not a solid and smooth surface, like sheet metal or plastic films, but rather a surface with lots of texture, meaning less surface area and dispersed discrete contact points.  The cloth materials can range from a textured continuous surface to mesh-like with lots of repeated holes, mostly air.

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How to measure resistivity in ohms/square with a resistance instrument?

May 6th, 2015 No comments

Although the PRF-912B Miniature Concentric Ring was designed to work with Prostat resistance meters, it is compatible to work with other meghometers as long as they are able to work BNC adaptor and cable as long as you have a resistance instrument that supplies a constant defined voltage of <10, 10 and 100V (depending on resistance being measured). If this is the case then you could use the PRF-912B with a third party megger.

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Should you multiply decay measurements made with a Charge Plate Monitor by 2 to meet the requirements of ANSI EOS/ESD S3.1?

February 27th, 2015 No comments

Recently, a customer using a Charge Plate Monitor asked an interesting question regarding the Prostat CPM-720A Charge Plate Monitor. Since it is stated that the CPM720A capacitance is approximately 10pF, does any direct decay measurement made with the CPM-720A should be multiplied by a factor of two (2) in order to match the requirements of ANSI EOS/ESD S3.1?

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Can one (1) order of magnitude be added on the resistance readin when using the PRS-922B Two-Point Probe?

February 27th, 2015 No comments

Is it possible to add one (1) order of magnitude on the resistance reading if I want to get an estimate of ASTM D-257 Surface Resistivity in ohms/square? If not, how can you get the surface resistivity when using the Prostat PRF-922B Two-Point Probe?

In fact, surface resistivity is a calculation, and the probe used for the PRF-922B is specifically measuring point to point resistance. Read more…

A Proposed Test Methodology for Evaluating the Electrostatic Characteristics of Floor Materials

February 27th, 2015 No comments

Because the movement of people and materials through sensitive electronics environments generate static charges, the selection and use of floor materials to control electrostatic discharge becomes a critical issue. Frequently, however, users of
these materials base their evaluation, comparison, and subsequent selection on a potpourri of electrostatic properties and test procedures, many of them either inappropriate or inadequate. Facing the same ill-define requirements,
material vendors are at a loss to provide adequate products information for decision making and have little guidance for developing and offering products to meet use requirements. Read more…

The PCS-715A Static Locator does not zero properly

February 3rd, 2015 No comments

Why does your PCS-71A or ESL-715A Static Locator Recently not zero? Even after connecting your meter to earth ground and turn on the meter and hit the “ZERO” button twice, it reads 0.02 instead 0.00.

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Agreement between SH&A and the ESD Association for the Level 1 Plant Auditor Program

January 21st, 2015 No comments

Stephen Halperin & Associates, Ltd. (SH&A) an independent consultancy of Bensenville, IL is pleased to announce a new cooperative certification agreement with the ESD Association, Inc. (ESDA) a not for profit association based in Rome, NY. In the agreement the ESDA grants SH&A the authorization to certify candidates to the ESDA’s TR53 Technician designation should they successfully pass SH&A’s Level 1: ANSI/ESD S20.20 Plant Auditor examination. Both organizations focus on the education, training and certification of plant auditors and technicians who must measure and maintain electrostatic discharge (ESD) controls in static sensitive environments. Many of these operations handle highly static sensitive electronic parts and assemblies. Personnel trained and certified in these specialized measurement techniques insure that ESD controls are in-place and functioning to prevent billions of dollars of ESD losses.     Read more…

Facility Engineering Protocols for Compliant Static Control Flooring Installation

September 24th, 2014 No comments

Note: This is an article that appeared in the FAcilities Engineering Journal in the July/August 2014 Edition. You can visit the journal’s website at

A person walking across an insulative tile floor can build-up static electricity resulting in electrostatic discharges (ESD). When a hand touches a doorknob, it can take 3000 to 3500 volts to feel a sudden shock. In 1971, Intel’s 4004 microprocessor equaled about 2300 transistors. At the end of 2008, Intel’s Dual Core Itanium 2 smashed the 2 billion transistor equivalency barrier.

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The Silent Killer: Suspect/Counterfeit Items and Packaging

September 23rd, 2014 No comments

Over the past several years, U.S. based organizations have curtailed traditional internal verification efforts due to reliance on contract manufacturers, distributors and suppliers to do the right thing. The inspection of ESD sensitive parts is very important, but without special safeguards, the additional handling to remove and repack a product for validation can cause both physical and ESD damage in the process. For parts, including those not sensitive to static electricity, measures must be utilized to detect, inspect and validate the packaging that identifies and protects the product.

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Error in Prostat PRS-801 Utility Software – Run-time error 91

August 11th, 2014 No comments

Error Message:

Application has generated an exception that could not be handled…

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