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Old 09-05-2012, 01:16 PM #1
chriscathro
 
 
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Why a Hanging Scale to refill CO2 Tanks?

Hi, can anyone tell me why a hanging scale is recommended over a table top scale for filling 20 oz CO2 tanks? I currently have a berkley 50 lb scale which is widely recommended on a lot of paintball sites but I could not get it to measure the weight as it increased without re-zeroing it each time. Thinking I was doing something wrong I contacted the manufacturer and asked how to get the scale to give a constant read out from 0 - 19 oz as the cylinder filled without me having to keep resetting (zeroing) it. Low and behold they [Berkleys] responded and informed me "the scale is not designed for paintball applications, it is designed for weighing fish and once caught they do not increase in weight!". All very amusing but I am left wondering why so many paintball sites are recommending a product that the manufacturer says is not intended or suitable for paintball applications? This gets me back to my question why is everyone recommending a hanging scale over a good table top scale? Is there a technical reason for this?
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Old 09-05-2012, 02:01 PM #2
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Quote:
Originally Posted by chriscathro View Post
Hi, can anyone tell me why a hanging scale is recommended over a table top scale for filling 20 oz CO2 tanks? I currently have a berkley 50 lb scale which is widely recommended on a lot of paintball sites but I could not get it to measure the weight as it increased without re-zeroing it each time. Thinking I was doing something wrong I contacted the manufacturer and asked how to get the scale to give a constant read out from 0 - 19 oz as the cylinder filled without me having to keep resetting (zeroing) it. Low and behold they [Berkleys] responded and informed me "the scale is not designed for paintball applications, it is designed for weighing fish and once caught they do not increase in weight!". All very amusing but I am left wondering why so many paintball sites are recommending a product that the manufacturer says is not intended or suitable for paintball applications? This gets me back to my question why is everyone recommending a hanging scale over a good table top scale? Is there a technical reason for this?
I've always taken recommendations on a paintball site with a grain of salt. People generally seem to just go off of what they heard from someone else, so I wouldn't be surprised if there is no benefit.
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Old 09-05-2012, 04:11 PM #3
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Old 09-06-2012, 01:38 AM #4
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was it increasing in weight due to the liquid co2 in the supply hose adding extra weight? i remember one time i asked the local field owner why they used a scale and he explained, then mentioned you just needed to use a bit of precaution when using the scale, best to be slightly less than full than overfilled.
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Old 09-06-2012, 07:01 AM #5
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I don't think it would make a different which on you use but the reason they use hanging is they are cheaper and the tank can't tip over when filling smaller bottles. Main reason is cheaper.
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Old 09-12-2012, 02:11 PM #6
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Thanks guys Personally I could not come up with a logical technical reason for using a hanging scale rather than a tabletop model. I have checked some reputable tabletop manufacturers out and the price range is not that wide. I suppose the hanging models also give greater mobility being smaller and easier to move around with if necessary but I am willing to sacrifice that bonous in favour of a good tabletop. Thanks again for your assistance.
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Old 09-12-2012, 11:32 PM #7
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Should probably note that the hanging scales allow you to keep filling the tank as you weigh it and you can look at it while standing up and filling.

It seems pointless if it's an at-home thing, but when your job is to fill... say... 20 tanks as fast as possible, every step and second counts and the longer you take, the longer the customer is without a tank.

In that regard, hanging > table.

You don't need to walk anywhere or move things with a hanging like you would a table top.
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Old 09-13-2012, 09:37 AM #8
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This is the best answer. I worked at a paintball field from 1990-94 when I was in high school. Obviously this was a time in paintball when there was only C02. The hanging scale allowed you to be much quicker and more efficient in filling lots of tanks. We had the different tanks (20,7,3.5 oz) all marked on the readout. This included the tank and the hose adaptor weight.


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Originally Posted by YeloSno View Post
Should probably note that the hanging scales allow you to keep filling the tank as you weigh it and you can look at it while standing up and filling.

It seems pointless if it's an at-home thing, but when your job is to fill... say... 20 tanks as fast as possible, every step and second counts and the longer you take, the longer the customer is without a tank.

In that regard, hanging > table.

You don't need to walk anywhere or move things with a hanging like you would a table top.
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Old 09-13-2012, 09:54 AM #9
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Back when I had my business I used a digital table top scale and zero'd the tank every time. Had a few people complain as it would take longer than they wanted but I erred on the side of caution every time and only had an issue with tanks when the valve wouldn't seat correctly.
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Old 09-13-2012, 09:59 AM #10
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Speaking as a field manager with 29 years of experience in this industry. We use a table top scale...specifically an ultra ship 35 from a web site called old will knott scales. here is a link http://www.oldwillknottscales.com/se...hip+35&x=0&y=0The scale is primarily used, outside of paintball, as a postal scale i.e. weighing letters and packages. It has multiple settings Grams, Kilograms, Pounds, Ounce, we typically use the ounce setting and what is called the mailer tube attachment. this prevents the co2 bottle from moving around.
The hanging scales are not accurate due to the liquid moving through the line and inside the recieving vessel or the bottle. If you ever watch a bass tournament the weigh in at the end of the tournament uses a table scale while on the boat they will use the hand held to get an approximate weight per fish. The squirming fish makes an accurate read nearly impossible as does the liquid "sloshing" around the bottle.
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Old 09-13-2012, 11:07 AM #11
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It is just how the scale is programmed. They never took into account that people would be using it to weigh CO2 so it's not programmed to give a dynamic readout.
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