water flow rate
Archiver
Posts: 46,084
Hey guys,
im looking for a simple device that can measure the flow of water though a tube.
It only really has to tell me when the flow is normal, low or stopped but extra
steps in between would be good.
Ideally it would be cheap but thats not the primary concern.
im looking to use my bs2 or a pic to monitor my water cooled PC. So if the water
stops flowing or slows down, i need to know.
Anyone got any idea's
Regards
Peter Rogers
[noparse][[/noparse]Non-text portions of this message have been removed]
im looking for a simple device that can measure the flow of water though a tube.
It only really has to tell me when the flow is normal, low or stopped but extra
steps in between would be good.
Ideally it would be cheap but thats not the primary concern.
im looking to use my bs2 or a pic to monitor my water cooled PC. So if the water
stops flowing or slows down, i need to know.
Anyone got any idea's
Regards
Peter Rogers
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
Recently our water processor (I don't know what this machine is called
properly in english, basically it takes the hardness out of the water by
filtering) failed, and it was due to a small turbine that measured the
number of litres flowing through it. The turbine provides information on the
amount of water passing trough the filters, which the system processor uses
to determine when to 'wash' the filters with salt water.
In any case, this device is a small turbine, placed inside a section of
plastic tube, with a small magnet attached to it, off-center. Above the
turbine is a hall-effect sensor, which counts the turns of the turbine and
sends them out as pulses.
I suppose that if you got hold of a spare you could use it to measure flow
with a Stamp relatively easy. Our machine's manufacturer is EcoWater, but
you may find plenty of manufacturers of this type of machines.
It's surprising how you can sometimes use stuff from experience aquired in
totally different areas :-)
I hope this helps, all the best,
Mike
>
Mensaje original
> De: Peter Rogers [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=DYJl_KQlTLW0KffNT0FRCE4EdX43Qpk2JcmbDhYYb881CTWgHqNoY_1w3MbVCi-3YP4Ga7xDRa7JmdSri1o]molly7@o...[/url
> Enviado el: lunes, 27 de agosto de 2001 11:17
> Para: basicstamps@yahoogroups.com
> Asunto: [noparse][[/noparse]basicstamps] water flow rate
>
>
> Hey guys,
>
> im looking for a simple device that can measure the flow of water
> though a tube.
>
> It only really has to tell me when the flow is normal, low or
> stopped but extra steps in between would be good.
> Ideally it would be cheap but thats not the primary concern.
>
> im looking to use my bs2 or a pic to monitor my water cooled PC.
> So if the water stops flowing or slows down, i need to know.
>
> Anyone got any idea's
>
> Regards
>
> Peter Rogers
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
There is a California based company called Proteus which makes flowswitches.
They have various sizes specs etc, but the one I used was about 3x3x1 and had
3/8" plastic inlet /outletconnectors(they have different connectors as
well). I think we bought them for 80$. Basically they have a rotor over
which water flows. The rotor has bar magnets and the coils mounted
outside(You cant see them) pick up this and provide voltage pulses. You shape
these pulses and measure the frequency.
Let me give you their web address:
http://www.proteusind.com/
They also have the pricelist and catalouge there/
And try this address too. It gives some nice pictures and might give you some
idea if you want to build one yourself:
http://www.evergreenlaser.com/proteus.htm
hope this helps.
regards
Vetri
ucsf
[noparse][[/noparse]Non-text portions of this message have been removed]
too high, then the flow rate is too low etc.
> Hey guys,
>
> im looking for a simple device that can measure the flow of water though a
tube.
>
> It only really has to tell me when the flow is normal, low or stopped but
extra
> steps in between would be good. Ideally it would be cheap but thats not the
> primary concern.
>
> im looking to use my bs2 or a pic to monitor my water cooled PC. So if the
water
> stops flowing or slows down, i need to know.
>
> Anyone got any idea's
>
> Regards
>
> Peter Rogers
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
> of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Mark Hillier, VE6HVW
President, HVW Technologies Inc.
Canadian Distributors of Parallax Products and other Neat Stuff
Tel: (403)-730-8603 Fax: (403)-730-8903
See our NEW BASIC Stamp Prototyping tools !
http://www.hvwtech.com/stampstack.htm
generated in one area , the cpu. it will then take time to flow to the
sensor if its not right at the cpu. I was going to use a temp sensor
connected to he cpu directly so this would do the same job but be more
direct.
thanks
Peter Rogers
Original Message
From: "Mark Hillier" <Mark@H...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, August 28, 2001 4:01 AM
Subject: Re: [noparse][[/noparse]basicstamps] water flow rate
> Why not just measure the temperature of the water ? If the temperature is
> too high, then the flow rate is too low etc.
>
>
>
> > Hey guys,
> >
> > im looking for a simple device that can measure the flow of water though
a tube.
> >
> > It only really has to tell me when the flow is normal, low or stopped
but extra
> > steps in between would be good. Ideally it would be cheap but thats not
the
> > primary concern.
> >
> > im looking to use my bs2 or a pic to monitor my water cooled PC. So if
the water
> > stops flowing or slows down, i need to know.
> >
> > Anyone got any idea's
> >
> > Regards
> >
> > Peter Rogers
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and Body
> > of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
> Mark Hillier, VE6HVW
> President, HVW Technologies Inc.
> Canadian Distributors of Parallax Products and other Neat Stuff
> Tel: (403)-730-8603 Fax: (403)-730-8903
> See our NEW BASIC Stamp Prototyping tools !
> http://www.hvwtech.com/stampstack.htm
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
if you are looking for a neat idea, and your water is clear, you can
put in any type of paddle or propeller in a sight glass. then put a
light on one side. if you have a mirror in the tube, you can count
interuptions of the light off the mirror as the wheel/paddle/propeller
turns. Of course this will interupt any optics that you can send
through the water so you can use whatever light sensing technology you
are comfortable with. No mirror? then you can put your light source n
one side and sensor on the other.
if your liguid has the potential to cloud or possilly allow alge to
block the glass, then the hall effect is a better way to go.
Dave
--- In basicstamps@y..., "Peter Rogers" <molly7@o...> wrote:
> I had thought about this but if the water stops flowing the heat is all
> generated in one area , the cpu. it will then take time to flow to the
> sensor if its not right at the cpu. I was going to use a temp sensor
> connected to he cpu directly so this would do the same job but be more
> direct.
>
> thanks
>
> Peter Rogers
>
>
>
Original Message
> From: "Mark Hillier" <Mark@H...>
> To: <basicstamps@y...>
> Sent: Tuesday, August 28, 2001 4:01 AM
> Subject: Re: [noparse][[/noparse]basicstamps] water flow rate
>
>
> > Why not just measure the temperature of the water ? If the temperature is
> > too high, then the flow rate is too low etc.
> >
> >
> >
> > > Hey guys,
> > >
> > > im looking for a simple device that can measure the flow of water though
> a tube.
> > >
> > > It only really has to tell me when the flow is normal, low or stopped
> but extra
> > > steps in between would be good. Ideally it would be cheap but thats not
> the
> > > primary concern.
> > >
> > > im looking to use my bs2 or a pic to monitor my water cooled PC. So if
> the water
> > > stops flowing or slows down, i need to know.
> > >
> > > Anyone got any idea's
> > >
> > > Regards
> > >
> > > Peter Rogers
> > >
> > >
> > > [noparse][[/noparse]Non-text portions of this message have been removed]
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@y...
> > > from the same email address that you subscribed. Text in the Subject
> and Body
> > > of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> >
> >
> > Mark Hillier, VE6HVW
> > President, HVW Technologies Inc.
> > Canadian Distributors of Parallax Products and other Neat Stuff
> > Tel: (403)-730-8603 Fax: (403)-730-8903
> > See our NEW BASIC Stamp Prototyping tools !
> > http://www.hvwtech.com/stampstack.htm
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
Looking in RS they have two sensors one priced at £70 and one at £20. The
more expensive one Give a frequency out and the cheaper one a pulse. The
datasheet (RS does not allow Cut+Paste) for the more expensive one gives a
warning and details of how to connect the sensor in the petrol line of
vehicles. Which made me think. For quite a while some cars have been
fitted with "Fuel consumption computers" Certainly I remember a friends
parents had a Talbot Horizon with such a device fifteen or twenty years ago.
So if your on a budget it may be possible to remove such an item from a car
wreck ? Anyone have any ideas on this ?
Justin Pentecost
Focus puller and stamp idiot
the temperature of the water. The water flow is effectively cooling the
sensor. Less water flow means less cooling so temp of sensor goes up and
vica versa.
You will probably need to find details of how to do this yourself, as I
don't have any more information from when it was presented in lectures.
Luke.
On Tue, 28 Aug 2001, Peter Rogers wrote:
M> I had thought about this but if the water stops flowing the heat is all
M> generated in one area , the cpu. it will then take time to flow to the
M> sensor if its not right at the cpu. I was going to use a temp sensor
M> connected to he cpu directly so this would do the same job but be more
M> direct.
M>
M> thanks
M>
M> Peter Rogers
M>
M>
M>
Original Message
M> From: "Mark Hillier" <Mark@H...>
M> To: <basicstamps@yahoogroups.com>
M> Sent: Tuesday, August 28, 2001 4:01 AM
M> Subject: Re: [noparse][[/noparse]basicstamps] water flow rate
M>
M>
M> > Why not just measure the temperature of the water ? If the temperature is
M> > too high, then the flow rate is too low etc.
M> >
M> >
M> >
M> > > Hey guys,
M> > >
M> > > im looking for a simple device that can measure the flow of water though
M> a tube.
M> > >
M> > > It only really has to tell me when the flow is normal, low or stopped
M> but extra
M> > > steps in between would be good. Ideally it would be cheap but thats not
M> the
M> > > primary concern.
M> > >
M> > > im looking to use my bs2 or a pic to monitor my water cooled PC. So if
M> the water
M> > > stops flowing or slows down, i need to know.
M> > >
M> > > Anyone got any idea's
M> > >
M> > > Regards
M> > >
M> > > Peter Rogers
M> > >
M> > >
M> > > [noparse][[/noparse]Non-text portions of this message have been removed]
M> > >
M> > >
M> > > To UNSUBSCRIBE, just send mail to:
M> > > basicstamps-unsubscribe@yahoogroups.com
M> > > from the same email address that you subscribed. Text in the Subject
M> and Body
M> > > of the message will be ignored.
M> > >
M> > >
M> > > Your use of Yahoo! Groups is subject to
M> http://docs.yahoo.com/info/terms/
M> > >
M> > >
M> > >
M> >
M> >
M> > Mark Hillier, VE6HVW
M> > President, HVW Technologies Inc.
M> > Canadian Distributors of Parallax Products and other Neat Stuff
M> > Tel: (403)-730-8603 Fax: (403)-730-8903
M> > See our NEW BASIC Stamp Prototyping tools !
M> > http://www.hvwtech.com/stampstack.htm
M> >
M> > To UNSUBSCRIBE, just send mail to:
M> > basicstamps-unsubscribe@yahoogroups.com
M> > from the same email address that you subscribed. Text in the Subject and
M> Body of the message will be ignored.
M> >
M> >
M> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
M> >
M> >
M>
M>
M> To UNSUBSCRIBE, just send mail to:
M> basicstamps-unsubscribe@yahoogroups.com
M> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
M>
M>
M> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
M>
M>
--
'80 (ex)KE38 '86 ST141 '84 AE86
I use a Proteus switch on a 500 gallon salt water aquarium in a research
lab. If a circulation pump fails, the switch detect it and kicks in a
backup pump. It has kept some expensive fish alive, and has worked well for
at least 15 years.
Dennis
USC School of Medicine
LA CA USA
Original Message
From: Lvetri@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=6dVRr6DMMTWl3qpzbUJnfJplECYc-gZTIm-POT1Wz7fOPDPIEwLNpN7QYLqVHkoj1-b9FLQk1KXy]Lvetri@a...[/url
Sent: Monday, August 27, 2001 3:20 AM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] water flow rate
Peter,
There is a California based company called Proteus which makes flowswitches.
They have various sizes specs etc, but the one I used was about 3x3x1 and
had
3/8" plastic inlet /outletconnectors(they have different connectors as
well). I think we bought them for 80$. Basically they have a rotor over
which water flows. The rotor has bar magnets and the coils mounted
outside(You cant see them) pick up this and provide voltage pulses. You
shape
these pulses and measure the frequency.
Let me give you their web address:
http://www.proteusind.com/
They also have the pricelist and catalouge there/
And try this address too. It gives some nice pictures and might give you
some
idea if you want to build one yourself:
http://www.evergreenlaser.com/proteus.htm
hope this helps.
regards
Vetri
ucsf
[noparse][[/noparse]Non-text portions of this message have been removed]
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
water flow. They are about $150 but will fit the bill.
They also have cheaper switches that use a paddle in the water flow. Less
money and accuracy.
Hope this helps,
Alan Bradford
Plasma Technologies
[noparse][[/noparse]Non-text portions of this message have been removed]
shotfall is that most of GEMS stuff are switchs and not an analogue
sensors. It would be a great base to add some sort of hall effect or
photonic sensor.
Dave
--- In basicstamps@y..., plasmastamp@a... wrote:
> I use flow sensors made by GEMS. They have a rotary flow switch
that measures
> water flow. They are about $150 but will fit the bill.
>
> They also have cheaper switches that use a paddle in the water
flow. Less
> money and accuracy.
>
> Hope this helps,
>
> Alan Bradford
> Plasma Technologies
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
The Gems stuff is simple but they do have rotary flow sensors that output the
pulses generated by the hall sensor. You just count the pulses over time. I
have also used the Proteus stuff. It is more accurate and industrially rugged
but also more $$$.
I am away from the office for a few weeks or I would look up the Gems numbers
for the rotary sensors.
Alan Bradford
Plasma Technologies
[noparse][[/noparse]Non-text portions of this message have been removed]