The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.
You can blow through it and have it count up. It has two counters in
the display, a master total and shorter term one. The short term can be
reset leaving the master value in place. Both values can be reset.

Both values are shown to 1/10th of a litre or 1/10th of a gallon.

It runs on a replaceable button cell, which is located under a
removable coin opened cover, O ring sealed from moisture. This is in
the very bottom of the unit, opposite side to the display and the far
side of the impeller/ water passage, with connections leading up to the
display and electronics.

The display and electronics seems to be completely and permanently
sealed in place, in its compartment :-(, so the pipes have to be
adapted to reach where you want to read the unit.

My guess is that the Hall Effect sensor is mounted in the electronics
compartment, on the PCB, with a tiny magnet on the impeller.

The water input is 3/4 BSP female, output 3/4 BSP male, so it will fit
straight onto a normal UK garden tap. It is marked with a direction of
flow, but I doubt the flow direction makes any difference - it counts
fine with the flow either way.

The unit powers down if no button is pressed and no water flows for 20
minutes and re-awakes on either.

As said, it is extremely sensitive to the slightest flow and its
accuracy is more accurate than I can check it. Maximum variation in
reading was plus or minus 0.6L in measuring 50L, even with a stop start
flow through it, so more than accurate enough for my purpose.

No doubt due to the axial flow, unlike some it doesn't insist on any
particular orientation of the unit.

I'm waiting now for 3/4 BSB to 12mm (both male and female) adaptors, to
install in the caravan.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

On Thursday, April 30, 2015 at 10:55:26 AM UTC+1, Harry Bloomfield wrote:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.
You can blow through it and have it count up. It has two counters in
the display, a master total and shorter term one. The short term can be
reset leaving the master value in place. Both values can be reset.

Both values are shown to 1/10th of a litre or 1/10th of a gallon.

It runs on a replaceable button cell, which is located under a
removable coin opened cover, O ring sealed from moisture. This is in
the very bottom of the unit, opposite side to the display and the far
side of the impeller/ water passage, with connections leading up to the
display and electronics.

The display and electronics seems to be completely and permanently
sealed in place, in its compartment :-(, so the pipes have to be
adapted to reach where you want to read the unit.

My guess is that the Hall Effect sensor is mounted in the electronics
compartment, on the PCB, with a tiny magnet on the impeller.

The water input is 3/4 BSP female, output 3/4 BSP male, so it will fit
straight onto a normal UK garden tap. It is marked with a direction of
flow, but I doubt the flow direction makes any difference - it counts
fine with the flow either way.

The unit powers down if no button is pressed and no water flows for 20
minutes and re-awakes on either.

As said, it is extremely sensitive to the slightest flow and its
accuracy is more accurate than I can check it. Maximum variation in
reading was plus or minus 0.6L in measuring 50L, even with a stop start
flow through it, so more than accurate enough for my purpose.

No doubt due to the axial flow, unlike some it doesn't insist on any
particular orientation of the unit.

I'm waiting now for 3/4 BSB to 12mm (both male and female) adaptors, to
install in the caravan.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Any detail on the flow meter ?

In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030
--
Chris French

On 30/04/2015 11:58, Chris French wrote:
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030

Wouldn't it be nice to have some sort of flowmeter like this which you
could leave in a CH circuit. (Displaying rate not volume for preference).

In article ,
newshound writes:
Wouldn't it be nice to have some sort of flowmeter like this which you
could leave in a CH circuit. (Displaying rate not volume for preference).

There are meters for heating circuits which measure flow rate and
temperature differential to give energy consumption. They are used
in communal heating circuit buildings to meter each appartment.
They are not cheap though.

Not sure if that's what you meant?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On Thu, 30 Apr 2015 14:17:42 +0000 (UTC), Andrew Gabriel wrote:

There are meters for heating circuits which measure flow rate and
temperature differential to give energy consumption. They are used
in communal heating circuit buildings to meter each appartment.
They are not cheap though.

Arm and leg price range I wanted to fit some to the new heating
system here, five in total, woodburner, oil boiler, solar, CH and
DHW. they would have cost a very significant percentage of the whole
installation. They didn't appear...

Flow rate ought to be available. The solar pump unit has one to set
the flow rate correctly for size of panel v size of heat exchanger in
tank. This is a lightly spring loaded disc in a clear tube not sure
if the tube is tapered.

This thread got me searching for a similary cheap volume meter but
for kerosene. I've not found one yet, though there are bare sensors
with a pulse output avialable from China but plastic and with simple
ridged push on hose conections.

--
Cheers
Dave.

On 30/04/2015 12:13, newshound wrote:

Wouldn't it be nice to have some sort of flowmeter like this which you
could leave in a CH circuit. (Displaying rate not volume for preference).

I have a flow meter in my heating but its analogue.
Its a ball in a tapered tube that goes up with the flow.
Its to get the best flow rate through the solar panels.

On 30/04/2015 18:59, Dennis@home wrote:
On 30/04/2015 12:13, newshound wrote:

Wouldn't it be nice to have some sort of flowmeter like this which you
could leave in a CH circuit. (Displaying rate not volume for preference).

I have a flow meter in my heating but its analogue.
Its a ball in a tapered tube that goes up with the flow.
Its to get the best flow rate through the solar panels.

Given it's dependence on temperature it can't be much more than a guide!
http://en.wikipedia.org/wiki/Viscosity#Water

Chris French was thinking very hard :
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030

It is from Argos, but via ther ebay store. I think you might be
surprised at what Argos do sell. They even sell car suspension bushes
now as I found last weekend when searching for some replacements. You
can order via Ebay and either collect in store or have the item
delivered to you free.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

In message , Harry
Bloomfield writes
Chris French was thinking very hard :
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030

It is from Argos, but via ther ebay store. I think you might be
surprised at what Argos do sell. They even sell car suspension bushes
now as I found last weekend when searching for some replacements. You
can order via Ebay and either collect in store or have the item
delivered to you free.

Really? sounds odd.

Might you be mixing it up with the option Ebay have to clicka nd collect
from an Argos store - which lots of sellers offer now.

This is just a collection option, its got nothing to do with being sold
via Argos.
--
Chris French

Chris French presented the following explanation :
Really? sounds odd.

Might you be mixing it up with the option Ebay have to clicka nd collect from
an Argos store - which lots of sellers offer now.

This is just a collection option, its got nothing to do with being sold via
Argos.

I had no idea they offered that, I have bought a few things like this,
from what I thought was Argos.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Harry Bloomfield wrote:

Chris French wrote:

I think Harry might have meant Ebay.
http://www.ebay.co.uk/itm/141418067030

It is from Argos, but via ther ebay store.

I think it's more complicated than that, it's sold on eBay by Quantum
Art Ltd (aka Canvas Discount), then delivered to an Argos store for you
to collect

On Thursday, April 30, 2015 at 12:00:14 PM UTC+1, Chris French wrote:
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030
--
Chris French

Wonder would that work with diesel. Always wanted to know consumption figures for a boat engine. Convenient for picking the most economical cruising speed

On Thursday, April 30, 2015 at 12:49:46 PM UTC+1, fred wrote:
On Thursday, April 30, 2015 at 12:00:14 PM UTC+1, Chris French wrote:
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived this
morning. Its an axial flow, spindle along the length of the water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I
expected Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030
--
Chris French

Wonder would that work with diesel. Always wanted to know consumption figures for a boat engine. Convenient for picking the most economical cruising speed

On second thoughts it would probably take two. One for the feed and one for the return. Rats, its getting complicated now as the return may be pressurised

fred wrote on 30/04/2015 :
On second thoughts it would probably take two. One for the feed and one for
the return. Rats, its getting complicated now as the return may be
pressurised

Not just pressurised, but quite hot too having passed through the HP
pump. The only show an increasing total, rather than an instantaneous
flow rate as you would get on a car.

The best way to do it, would be a pic ( lol), measuring how long the
injectors are open for, with an input from HP line pressure.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

On Thu, 30 Apr 2015 04:54:04 -0700 (PDT), fred wrote:

Wonder would that work with diesel. Always wanted to know
consumption
figures for a boat engine. Convenient for picking the most
economical
cruising speed

On second thoughts it would probably take two. One for the feed and one
for the return. Rats, its getting complicated now as the return may be
pressurised

My digging for a simple flow meter for kerosene produced hits for
devices to measure engine fuel consumption so they are out there but
I suspect at price with 3 digits of pounds.

--
Cheers
Dave.

On Thu, 30 Apr 2015 04:49:44 -0700, fred wrote:

On Thursday, April 30, 2015 at 12:00:14 PM UTC+1, Chris French wrote:
In message , Andrew Gabriel
writes
In article ,
Harry Bloomfield writes:
The item which I ordered from Argos a couple of days ago, arrived
this morning. Its an axial flow, spindle along the length of the
water flow,
quite well made and very sensitive to the slightest flow through it.

Have you got a link - doesn't sound like the sort of thing I expected
Argos to stock?

I think Harry might have meant Ebay.

This is what he linked to befo

http://www.ebay.co.uk/itm/141418067030
--
Chris French

Wonder would that work with diesel. Always wanted to know consumption
figures for a boat engine. Convenient for picking the most economical
cruising speed

Presumably you're talking about a displacement hull rather than one
designed to rise out of the water like a 'speedboat'. The most economic
speed is around a half to three quarters of the waterline length limited
speed (essentially what you can get at maximum throttle unless the boat
is very underpowered).

ISTR that for a 30 foot waterline length, the limit was around 6 to 7
knots. In any case, it varies in proportion to the square root of the
waterline length of the vessel. Trying to exceed this limit is, quite
literally, an uphill struggle.

--
Johnny B Good