×
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

Humidity Sensor to Check Steam Coil Leak

Humidity Sensor to Check Steam Coil Leak

Humidity Sensor to Check Steam Coil Leak

(OP)
I am installing a steam coil air heater to heat seal air to precipitator insulator boxes.  The warm air will blow through the end of the insulator into the dirty flue gas inside the precipitator.  I want to install a humidity sensor downstream of the coil to determine when a leak occurs in the steam coil.  Will this work?  The air temp will be 200 deg F.  The airflow is 10,000 SCFM at 14" static pressure at the coil.  

Any suggestions for vendors?

RE: Humidity Sensor to Check Steam Coil Leak

JeffHofacre
Rotronics offers models that will withstand up to 390 F.
0-100 %, +/-2% accuracy.

www.rotronic-usa.com

Regards
pennpoint

RE: Humidity Sensor to Check Steam Coil Leak

I would have thought regular maintenance inspections would have been better. ??

When you heat air, its humidity lowers and I guess you would end up with very low % hum levels, possibly 10% or so. However in the event of a leak, the air will increase in humidity.But a small leak might not register.

If for instnace the outdoor air moisture level went up, the overall humidity would also rise. How would you set up and calibrate the sensor?

I think you would need to have anex ternal sensor to measure the incoming value and an offgoing sensor to see what the change would be. If the change was more than expected, then I could see it working. However, sensors need regular maintenance and cleaning, so you might as well scrap the expensive gizzmos and use your eyes.

Friar Tuck of Sherwood

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