A little Puzzeled - Gaslow

Please check that the devise works with refillable cylinders. Most side action ultra sonic ones get confused by the float that insures you can’t overfill. I have tried out models two that gave false readings.
 
Teutone said:
from the Gaslow website:
Our new cylinder is fitted with a new mechanically accurate contents gauge.
Click to expand...
The only way to measure something like is a float system!..As I mentioned most gauges work on Vapour pressure and the inherent variables that make it useless.

I have an idea ....if sufficient room mount bottles on a set of scales !!...The most accurate method of all ...the reason why in the Air con and refrigeration side of things we fill and evacuate using ....Scales.

Channa
 
Gauges

I have lpg to run my car the gauge is a waste of space. As lpg is a liquid with a head of gas above it as you draw gas off more liquid turns to gas and this causes the pressure to remain the same. To get an accurate reading requires two readings to be taken, one from the liquid and one from the gas, these are then fed to a differential gauge for an accurate reading, (expensive). Same system as the hospital oxygen tanks.
My van tank is underslung and has a float in it but means grovelling on the floor.
 
deadhead said:
I have lpg to run my car the gauge is a waste of space. As lpg is a liquid with a head of gas above it as you draw gas off more liquid turns to gas and this causes the pressure to remain the same. To get an accurate reading requires two readings to be taken, one from the liquid and one from the gas, these are then fed to a differential gauge for an accurate reading, (expensive). Same system as the hospital oxygen tanks.
My van tank is underslung and has a float in it but means grovelling on the floor.
Click to expand...

What significance is the gas in the equation ? as you state it gasses constant, therefore we need to establish the liquid left. the easiest way is scales difficult on a underslung tank granted.( float system that are visible is the obvious answer).

In addition Oxygen has very different properties to LPG i.e different lower and upper explosion limits ,specific gravity, volumetric expansions etc

In a hospital situation, a gauge which can intelligently correalate the difference of barometric pressure and temperature with a float gauge would be quite accurate, but seems a lot of effort compared to a set of gas scales.

Channa
 
SPRING BALANCE 25Kg weighing luggage scales fishing | eBay
like channa says i use one of these . easy to use . weigh your bottle then work out how much room you have . then fit the adaptor and go and fill your bottle . cant be doing with all these expensive bottles .
mine have always been refillable . some times i just exchange them and let others do the filling .
flo gas 19kg bottles arent that more to exchange . plus theres a depot in my road .
 
I fitted my own gas low system. It was quick and easy. The gauge appears accurate and is a float system as mentioned. It records exactly as the handbook states. Just before my Scotland trip I filled up and the amount of gas to fill was what I expected. I fitted it approx 3 yrs ago and haven't looked back.
Jon
 
So lets work this out, we can establish the empty weight of the bottle inc regulator ? possibly adjust the scales show they show zero with bottle rested upon them ?( for the mathematically challenged) fill bottles to 80 percent , scales compute to weight ? ......have a few breakfasts, roast dinners, the occasional shower...and see whats left ? Eureka David we are onto something.....telephone your contacts in Chinkong and we are on a winner !!!.

Winchanna Enterprises proudly announce the Gas checka ( forgive the English fella it's trendy ) ........A new rowing boat each out the proceeds. Overall a spiffing idea... Btw do you have Satchhi and his bros number ? ....hallelujah !!!

Channa
 
We used to use load platforms at work for checking the level of CO2 bottles (for freezer backup). Like LPG, CO2 is a liquid under pressure so cylinder pressure tells you next to nothing. Problem was, the load cells were big and heavy as they had to be rated for continuous use. When we scrapped the system I "rescued" one of the balances before it went to the tip. Its great for checking the levels in my bottles but, alas, far too big for the motorhome.

We did try bathroom scales at work but they don't work for long as the spring gets a "set" rapidly. Mind you, I bet they will work OK for the lighter LPG bottles and they are very cheap.......

Keith
 
It would be an easy task to extend the wires to the display and have it in the cab too.

You've got me thinking now......
 
Hooooooy copyright alert !!!!.....tis I that volunteered the scale idea ( check back )....on second thoughts go for it boys !!!

David a time ago made a comment regarding a disc brake to slow a machine down, that a client was struggling with.( see I do read )

Sometimes people dont see wood for the trees....I reckon a set of scales, extend wires from pcb to display in the gas compartment you are sorted ..

On a serious note , a really simple idea,

Of course an app can be created for the I phone ...wireless technology to give another dial on the dashboard of the starship ..

Measuring Vapour pressure is not the answer, float gauges are susceptible to atmospherics. ( albeit pretty accurate) ...Nope scales are the answer !!

Channa
 
Don't worry all credit and financial gain can go to you....:)

Just thinking about my own mods.
 
Andys said:
We have a 2 x 11kg system, we were out at the weekend, checked the tank levels which were showing a quarter full, as we are going to France for 3 weeks shortly decided to fill up the tanks at our local ASDA. only got 10 litres in before the pump cut off. I checked the gauges and they showed just under half full. Have I got faulty gauges or do you think there could be a fault in the system. I posted last year that the tanks took an age to fill up. Cheers Andy
Click to expand...

You have 2 cylinders same as my set-up.
Leave one cylinder closed and run of other cylinder. When gas stops change onto 2nd cylinder.
You then know its time to fill up empty cylinder.
Why bother with scales etc etc ? Unless i'm missing something, i stand to be corrected.
 
Obanboy666 said:
You have 2 cylinders same as my set-up.
Leave one cylinder closed and run of other cylinder. When gas stops change onto 2nd cylinder.
You then know its time to fill up empty cylinder.
Why bother with scales etc etc ? Unless i'm missing something, i stand to be corrected.
Click to expand...

far easier and simpler to get an adaptor off e bay for twenty or so quid . and as you do, when one bottle is empty put other on, fill empty bottle .
why make life complicated . why buy expensive bottles .
 
Obanboy666 said:
You have 2 cylinders same as my set-up.
Leave one cylinder closed and run of other cylinder. When gas stops change onto 2nd cylinder.
You then know its time to fill up empty cylinder.
Why bother with scales etc etc ? Unless i'm missing something, i stand to be corrected.
Click to expand...

Nice one Obanboy. Why do we always try and come up with complex and/or expensive solutions when there is a much simpler and cheaper way of doing it.
 
Gaslow filling problem

I had the same problem in 2008 in France, I had just had the system fitted prior to our Euro tour, the fitting agents in Livingston filled up the system and all was well until they needed refilled. Could not get more than 5 litres into the tanks and tried at numerous garages to no avail. I eventually contacted Gaslow when totally empty in Italy and they suspected that it was the regulator valve. They dispatched a new one on 48 hour delivery to the campsite we were in where I fitted it in minutes but Italian regulations would not allow us to refill in Italy so had to wait until Spain, filled up and have had no problems since. Yes it takes an age to fill up two empty bottles.:wacko:
 
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