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  1. shackney

    NEMA ratings - certification required?

    What are the constraints to putting a NEMA rating on an enclosure? Specifically, I am contemplating having an enclosure custom designed or modified for an existing product. The purpose of the change is to improve/upgrade the protection to allow NEMA rating. I have no trouble reading and...
  2. shackney

    Information on Autoclave fitting specs

    I have seen some references to this subject in this forum, so I am posting here. If another forum is a better fit, please advise. I am looking for information on the fitting style called "Autoclave" or "API." I have a pretty good idea of what the general design looks like...
  3. shackney

    ISO 7 R threads

    Can anyone tell me what an ISO 7 R thread is? I'm thinking that it's just a different name for a BSPT. But I need to be sure. Thanks in advance. Steve the dumb question guy.
  4. shackney

    Material for use in 30% HCl with Al hydroxide at 200C

    The application is a thermowell (small, solid metal, pressure containing. Cost is always an issue, of course, but it is not the overriding issue, since the component is small. "Small" being a couple of metres long, a few inches wide. The service environment is 30% HCL with Aluminum...
  5. shackney

    How to avoid aluminum -> hydroxide

    I have a product with some small aluminum components - specifically a gauge with aluminum pointer and adjustment mechanism. The gauge is fluid filled, and recently we have been required to take the fluid fill from glycerine to a mix of glycerine and water. Over time, some of the pointers are...
  6. shackney

    Gage R&R spreadsheet?

    Anyone got a pointer to a basic level spreadsheet for doing gauge R&R? I don't need a tremendous level of power in this, and I am willing to adapt it as necessary to my purposes. Mostly what I want, though, is to know whether the variation that I am measuring is a function of the measuring...
  7. shackney

    Where in a pipe should I measure temperature?

    I need to measure the temperature of a liquid in a pipe. Assume turbulent flow, temperature slightly elevated over ambient. Is there an accepted standard for the insertion depth into the pipe of a thermometer bulb (or other temp sensor)? What's left of my common sense tells me that any reading...
  8. shackney

    How to measure color / clarity of "clear" fluid

    I am using a water / glycerine mixture in an application with visual exposure (filled gauges). I have seen discoloration of this mixture from time to time, and I need to start tracing down how and when this discoloration happens. I am looking for a method of measuring coloration of the mixture...

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