×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Simple Mechanical Blowcase Cycle Counting

Simple Mechanical Blowcase Cycle Counting

Simple Mechanical Blowcase Cycle Counting

(OP)
Hi,

Do you have any suggestions for a simple method of counting blowcase cycles on a small booster compressor package.

I was thinking of using a pneumatic cycle counter on the instrument gas line that acutates the valves. The problem is that I can't find anything that can be used with natural gas.  

We don't have any power on site so no fancy transducer devices.

Thanks,

RE: Simple Mechanical Blowcase Cycle Counting

If your metering your fluid volume off the blowcase its a simple as determining the volume per cycle and calculating out your daily cycles.

RE: Simple Mechanical Blowcase Cycle Counting

What about using a Barton chart recorder, measuring the pressure changes on the blowcase everytime it dumps.

RE: Simple Mechanical Blowcase Cycle Counting

A blowcase is a really good positive-displacement meter--while it is in the dump cycle, inflow is stopped so you get an exact volume per dump.  I've used that characteristic to feed a dump counter into the "turbine meter" input on an RTU (with the "k-factor" being volume per dump) and it has worked really well.

The simple turnstile counters are a bit too simple and tend to be very fragile.

I've had better luck with an Ashcroft pressure switch (I got it from PreMac http://www.premacinc.com/index.php but any Ashcroft dealer should be able to help).

Counting pulses on a Barton chart could work, but you would have to calculate your volume manually.

David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

The harder I work, the luckier I seem

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources