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Recent content by tgreif

  1. tgreif

    2005 Plotting Options

    I'm curious as to the collective school of thought on plotting in the latest releases of Autocad. Previously, all plotting referenced the "Printable area" of a sheet. Now in 2005 (and I believe 2004), you can select "Edge of Paper" as well. Since all of our page setups were previously...
  2. tgreif

    Another DrawOrder question

    Thank you Exxit, that worked perfectly.
  3. tgreif

    Another DrawOrder question

    I attached an image of a map to the drawing in model space. I then go to Layout (paper space), and open a viewport to size the map. When I add my leaders and text in paperspace, it dissappears from the display beneath the image in the viewport. DrawOrder has no effect on elements in another...
  4. tgreif

    BIF Digester Gas Flowmeter

    why not just try BIF themselves. The original BIF was bought by a group of former employees and are still doing business in flow metering. http://www.bifwater.com/ They should be able to help you with the calibration of the existing flow element so you can install a modern DP transmitter.
  5. tgreif

    Plotting in 2005

    We're about to upgrade from 2002 to 2005. We currently use named page setups to control all print/plot settings. I'm trying to find out if we're going to need to modify anything about our current print/plot procedure to accommodate the new Acad version. Has anyone encountered problems moving...
  6. tgreif

    Excessive Water Pressure in Taps

    This house must have a check valve in the supply line. Water expansion due to thermal effects would normally just push the water back out into the supply line in normal household services. Something has to trap the water to get a buildup. Why are you using check valves on service supplies?
  7. tgreif

    how to size pipe for chlorine gas

    Get a copy of the "George Cliffird White Handbook of Chlorination". This is the bible for disinfectant use in the water and wastewater industry in the US. It gives all the info you need for sizing of pipes.
  8. tgreif

    Two versions on one machine?

    I've had two versions operate successfully, though not the exact same versions you're talking about. We did it with 2000i and 2002. As long as both STAYED on the machine, everything was fine. Problems developed when the 2000i was removed. It made the remaining 2002 copy unstable...
  9. tgreif

    Why twin antennas on wireless routers?

    Thanks for the info. I understand. But does that mean I can use either port for the external directional antenna?
  10. tgreif

    Why twin antennas on wireless routers?

    Most wireless access points and routers have twin antennas on the rear. What's the reason behind this? And if you're trying to extend the range of the wireless link by using an external directional antenna, which antenna port do you use, or does it matter?
  11. tgreif

    Long distance pipeline control

    I'm in the water industry and we periodically have to design pipelines for supply to remote areas. I know that the petroleum industry deals with long pipelines routinely. I'd like to know what type of controls are generally used for booster pumping stations along the line. And also, what's...
  12. tgreif

    pumps in series over long distances

    stanier Over 600 miles (1,000km) with one pump? What kind of discharge pressures are we talking about here. Most pipelines I'm aware of have some in-line booster stations along the pipeline to boost pressure.
  13. tgreif

    Starting Up a Pump

    No offense taken Art. However, I've seen very few instances of powered discharge valves in series with conventional check valves. If you have a check valve, why would you need to open and close a discharge valve, other than surge avoidance. If it is for surge avoidance, we're probably talking...
  14. tgreif

    Starting Up a Pump

    I'm not sure why everybody is saying to not start the pump against a closed discharge valve. It is common to start centrifugal pumps against a closed discharge valve, especially large pumps. Take a large water pumping station for instance, where multiple pumps are piped in parallel to...
  15. tgreif

    Practical distance limit for 3-wire starter control?

    Many times, we've used a DC control relay for long distance control of motor starters. At some distance, a 3-wire control (start-stop) with an AC magnetic starter will not be acceptable due to the capacitive coupling in the Stop circuit. Even though the NC stop button is pressed, the...
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