Forums
New posts
Forum list
Search forums
What's new
New posts
New resources
Latest activity
Trending Threads
Resources
Latest reviews
Search resources
FarmTV
Farm Compare
Search
Tokens/Searches
Calendar
Upcoming Events
Members
Registered members
Current visitors
New Resources
New posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Forum list
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Farm Building and Infrastructure
Buildings & Infrastructure
Borehole Water Tank - Remote Level Monitoring
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Alchad" data-source="post: 7605142" data-attributes="member: 143348"><p>Yes, a pressure switch to turn the borehole pump on at low level in the reservoir and off when full would need a very accurate pressure switch - the tank (it's actually a concrete circular pit in the ground) is only about 4 metres in depth, so say 3metre change from low level switch on to high level full is about a 0.3 bar change in pressure. As the static head (70 metres) is 6.85 bar I suspect 0.3 bar difference would be asking too much for a normal pressure switch?? Also, don't think the dynamic pressure drop would come into this because the flow out of the tank/reservoir under normal circumstances would be quite small and the dynamic pressure loss similarly small. Agreed that when the pump is operating to fill the tank the dynamic pressure loss would be quite high - as you say 2 to 3 bar. </p><p></p><p>Regarding the pressure vessel. Haven't come across these, will investigate.</p><p></p><p>Thanks all for the input.</p><p></p><p>Alchad</p></blockquote><p></p>
[QUOTE="Alchad, post: 7605142, member: 143348"] Yes, a pressure switch to turn the borehole pump on at low level in the reservoir and off when full would need a very accurate pressure switch - the tank (it's actually a concrete circular pit in the ground) is only about 4 metres in depth, so say 3metre change from low level switch on to high level full is about a 0.3 bar change in pressure. As the static head (70 metres) is 6.85 bar I suspect 0.3 bar difference would be asking too much for a normal pressure switch?? Also, don't think the dynamic pressure drop would come into this because the flow out of the tank/reservoir under normal circumstances would be quite small and the dynamic pressure loss similarly small. Agreed that when the pump is operating to fill the tank the dynamic pressure loss would be quite high - as you say 2 to 3 bar. Regarding the pressure vessel. Haven't come across these, will investigate. Thanks all for the input. Alchad [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Farm Building and Infrastructure
Buildings & Infrastructure
Borehole Water Tank - Remote Level Monitoring
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top