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  1. mmilbury

    orifice size chart?

    thanks both of you. This is exactly what I am looking for. ---- An optimist sees the cup half full A pessimist sees it half empty An engineer sees it twice as large as it needs to be.
  2. mmilbury

    orifice size chart?

    Is there a chart that will relate the orifice size A, B, C, etc. to the size hole? Thanks. ---- An optimist sees the cup half full A pessimist sees it half empty An engineer sees it twice as large as it needs to be.
  3. mmilbury

    need direction. . .

    For my work I am developing a program to monitor thicknesses of pipes and tanks at an asphalt refinery. I have records for the last thirty years and need to develop some way to view the data. Each report contains roughly 100 engineering drawings. Each drawing has 50-100 data points on it. The...
  4. mmilbury

    CO2 Removal

    Thanks a ton. Thats exactly what I was looking for. We are trying to see if how much NaOH we are going to consume a day and 7tonnes is quite a bit. Not exactly cost effective since, in the long term, there are cheaper things out there. ---- An optimist sees the cup half full A pessimist...
  5. mmilbury

    CO2 Removal

    I am working on a system that is to remove CO2 from Natural Gas. The composition is as follows: (Mole %) O2: 8.154 Nitrogen: 29.401 Carbon Dioxide: 29.596 Carbon Monoxide: 0 Methane 30.3 Ethane 0.882 Propane 0.187 IsoButane 0.091 n-Butane 0.105 IsoPentane 0.109 n-Pentane 0.141 Hexanes + 1.035...
  6. mmilbury

    hi...i want a prototype

    Whats the API of the oil you are designing to? ? ? ---- An optimist sees the cup half full A pessimist sees it half empty An engineer sees it twice as large as it needs to be.
  7. mmilbury

    Microcontroller Selection

    awesome post. . thanks. . What I meant by SCSI compatable was being able to hook it to my computer. I'm not familiar with JTAG, though. Finally my understanding of masked-ROM is it prevents reverse engineering so people won't be able to see my program after I've done it. Is this correct...
  8. mmilbury

    Microcontroller Selection

    I've identified a few things that I need to know when selecting a microcontroller. • Number of pins • ADC converters • DAC? • Interrupts • Internal/External Memory • SCSI compatable • Anticipated production dates (i.e. is chip expected to be discontinued?) • Price • Assembly Language/Ease of...
  9. mmilbury

    Fluid Properties in a windtunnel

    Currently, I am working on a project to develop velocity profiles in a windtunnel with dual fans. We are using a stepper motor to drive a screw to move a pitot tube vertically (1 axis). By knowing the number of steps on the stepper motor, I am able to measure position and the pitot tube will...
  10. mmilbury

    Car swaying

    I know its late in the post but like I've said on other posts, UNLESS YOU KNOW WHAT YOU ARE DOING, DON'T ALIGN YOUR CAR YOUR SELF. Caster doesn't directly affect tire wear. It causes a condition called camber roll which is the change in camber when you turn your wheels. IMHO, extremely high...
  11. mmilbury

    Building a vibration sensor

    I'm building an acceleration sensor for a project with low g's. (.05<g<1.0 max g = 2.0) I've researched several sensors on the web and have selected a sensor with a sensitivity of 120 pV/g. My understanding is there is a known mass that reacts to the vibration. This reaction is output as a...
  12. mmilbury

    Building a vibration sensor

    I'm building an acceleration sensor for a project with low g's. (.05<g<1.0 max g = 2.0) I've researched several sensors on the web and have selected a sensor with a sensitivity of 120 pV/g. My understanding is there is a known mass that reacts to the vibration. This reaction is output as a...
  13. mmilbury

    Neon Body Roll

    Adjusting Camber without knowing what you are doing is a really really bad thing. If you don't have the right equipment (can't measure the angle to 0.1 degrees, I wouldn't touch it. If the Cross Camber or CrossCaster is greater than 0.5, you're gonna feel a pull, you might not be able to pull...
  14. mmilbury

    Pump Off Controllers

    Anybody know of a developed inexpensive Pump Off Controller? All the ones I've seen are $2,000 or more.
  15. mmilbury

    Wellhead Zoning Rules

    If you're looking for a hard copy, I have this: API RP 500B Classification of areas for electrical installations at drilling rigs and production facilities on land and on marine fixed and mobile platforms (quite a title, eh?) This is from API April 1977

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