Error in Prostat Autoanalysis – Application has generated an exception that could not be handled

November 23rd, 2016 No comments

Error Message:

Application has generated an exception that could not be handled…

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The Difference between Constant Voltage (Under Load) and Open Circuit Resistance Meters

November 23rd, 2016 No comments

During a witness audit last week, a customer asked what the difference was between a resistance instrument Under Load and Open Circuit. The quickest answer to the question is that Constant Voltage (Under Load) instruments would be a Laboratory type instrument, while the Open Circuit is a general indicating instrument.

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Error in Prostat Autoanalysis – CrystalDecisions.Windows.Forms

October 31st, 2016 No comments

Error Message:

Could not load file or assembly ‘CrystalDecisions.Windows.Forms, Version=13.0.2000.0, Culture=Neutral…

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Error in Prostat Autoanalysis Software – Invalid Page Margins

October 31st, 2016 No comments

Error Message:

Error in File [REPORT-NAME]: Invalid page margins.

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Not all 5lbs Conductive Rubber Electrode are created equal!

The Prostat PRV-813 Rubber Electrode Verifier has been designed because people in our industry keep asking, “Why do we get different resistance measurements with different electrodes?” After years of measurements, sometimes many thousands of measurements, electrodes are different from “new” and there is no realistic means to assess the current condition of used electrodes. We found that the PRV-813 is a positive step toward answering this important question.

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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…