Flow switch!
Flow switch!
(OP)
I have been having a really hard time with a problem on site. We presently use a paddle wheel style flow switch for HVAC/ventalation low flow indication. I strongly dislike these unreliable and hard to set up switches.
I have been tempted to go toa 3/4 four wire velocity/flow transmitter, but know that the costy of this will get squashed. Instead, I have been looking into thermal switches. There are many of these on the market at decent prices, but it appears they are all 3/4 wire devices.
Needless to say, I do not want to spend a small fortune running new cable for 100 switches. I really want to get away from switches with moving parts, and thought thermal was the answer.
Does anybody know of such a 2 wire device? Are there any other suggestions?
Any input on this one would be extremely welcome. I have been doing a lot of diffing on this, all to no avail!
I have been tempted to go toa 3/4 four wire velocity/flow transmitter, but know that the costy of this will get squashed. Instead, I have been looking into thermal switches. There are many of these on the market at decent prices, but it appears they are all 3/4 wire devices.
Needless to say, I do not want to spend a small fortune running new cable for 100 switches. I really want to get away from switches with moving parts, and thought thermal was the answer.
Does anybody know of such a 2 wire device? Are there any other suggestions?
Any input on this one would be extremely welcome. I have been doing a lot of diffing on this, all to no avail!





RE: Flow switch!
RE: Flow switch!
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Flow switch!
Dr. Tim and Dr. Joe
Flow Measurement and Steam Surface Condenser Professionals
RE: Flow switch!
Plesae read FAQ240-1032
My WEB: <http://geocities.com/nbucska/>
RE: Flow switch!
thanks for the feedback though
RE: Flow switch!
RE: Flow switch!
I have never had that problem. You can put net url links in with no problem.
What is the problem that stops you?
RE: Flow switch!