Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. wde3477

    CALCULATION OF AMMONIA SLIP

    I don't know the equation, but I recall that our catalyst manufacturer (Cormetech) uses some form of equation involving some pretty nasty log functions, and it may be specific for each catalyst makeup and also proprietary. At any rate, given such an equation, you would most likely need to know...
  2. wde3477

    European Voltage Equipment used in North America

    We had a similar situation with equipment from Europe. Since the equipment was relatively new and our installation & start-up time was extremely limited, we opted to put several small 480/380 transformers in place with the thinking that as various components failed on down the road, we would...
  3. wde3477

    Desuperheater Control

    We use a desuperheater to control steam sootblowers on some emission equipment. We ended up controlling the conditioned steam's pressure using the supply steam valve, and controlling the conditioned steam's temperature with the attemporator (water) valve, both with standard PID controls. The...
  4. wde3477

    Visual Basic to PLC connection

    I believe there are several companies out there that have a VB-PLC communication interface. You might take a look at www.softwaretoolbox.com's INGEAR as one potential source.
  5. wde3477

    GE Multilin 469: Problems??

    We installed several 469 relays, about 25-30, in the 1998-99 time frame. We have experienced what I would consider to be a higher than acceptable failure rate on these units. It seems that there is a problem with the power supplies - that's what the repaired units come back with - but our...
  6. wde3477

    CEM, emission control

    Not clear on the question - are you asking for emissions monitoring systems or emissions control systems?
  7. wde3477

    Need Help for A/B SLC 500 - troubleshooting tips

    The quick-n-dirty way would be to put a MOV block immediately before the rung to be tested, moving a value into N7:4 or N7:10. By using a spare integer (N7:??) for the source data, you can then go into the data block and dynamically change the value that will be written into N7:4 or N7:10...
  8. wde3477

    Gel-cell (VRLA) battery reliability

    Well, I first posted this question in the 'Battery Engineering' forum, but no response after a week, so I figured I'd try another forum containing more members. Our insurance inspector voiced concerns over our recent installation of VRLA batteries, and suggested a capacity test even though...
  9. wde3477

    Reliability of gel-cell (VRLA) batteries

    Our insurance inspector voiced concerns over our recent installation of VRLA batteries, and suggested a capacity test even though the batteries are less than one year old. This is our first VRLA set on the larger systems (2000 Amp-hour) - capacity tests are currently scheduled for our Lead-Acid...
  10. wde3477

    Feeder Speed for Coal mills.

    I don't know of any issues with mill operation. Relating to our feeders, the thing I would be concerned about is sufficient cooling for the motors if they are running off a Variable Frequency Drive. Lower RPM = lower cooling fan speeds.
  11. wde3477

    how i can get plc manual book?

    You can get most manuals for Allen-Bradley equipment from their website http://www.ab.com
  12. wde3477

    I want to change a farmall H fron 6

    I would think the main advantage to the switch would be the availability and lower cost of 12V replacement parts along with the ability to add 12V accessories. I'm guessing that 6V systems went out of favor in the late 50s?

Part and Inventory Search

Back
Top