level measurement

As always, Lynlynch is correct.

But let me add this to explain:

The API conversion charts for temperature correct the volume with regard to thermal expansion to 60° F or 15° C for accounting purposes. This was the temperature chosen for accounting purposes of fuel. I don't know the volume of your tank (9m could be diameter or height), but even in large tanks the % of volume correction is very small and only noticeable when accumulated over a period of time.

The volume correction factor I am used to seeing is normally less than 1% plus or minus (depending on if the oil is above or below 15° C).

Unfortunately I do not have the conversion tables with me and cannot give you more information with out research. I you need to know more, just ask and I will do what I can.

Drew

Thank you, sir.

You are correct that if the OP wants to figure the value of his inventory, or sell some to a customer, he'd need to compensate. (I thought it was 65°F)

Unfortunately, gas pumps in the USA only compensate for temperatures below 60°F. In other words, when it's to their benefit. There is no compensation when the fuel is hot, and expanded. More $ for the oil companies.

WHAT!!! that sux!

I mostly worked with large volume tanks, and the bean counters wanted all quantities converted to 60° for accounting.

Drew

thanks for the annser yes the tank is above 15 c and the height is 9 m i want to know how it is going to effect the account factor and by what factor

Is 9 m the diameter or height? How much will the tank hold? Above 15c your quantity will be above the standard at 15c, but how much depends on how warm it gets. I do not have the conversion table books here, but may be able to find them to give you an idea about conversion factors.

Here is a link to a page in a book I found while searching for more information on the volume correction books. If it loads to the correct page for you (pg 25) the bottom right hand corner has a paragraph describing the volume correction factor for 51°F to 60°F.

This is an exerpt from a web page I found describing how to determine the specific gravity for your fuel and included this paragraph at the bottom on volume correction factors.

ASTM/API/IP Table 6A/B gives you the facts you need to convert product volumes observed at temperatures other than 60° F for values of API gravity in the range of 0° to 100° API. The volume correction factor in these tables makes no allowance for the thermal expansion of tanks and other containers. You must use these tables with API gravity values at 60° F and values measured at Fahrenheit temperatures. Table 6A is used for JP-4 and table 6B is used for all petroleum products other than JP-4 See DA PAM 710-2-1. For example, what is the volume of 63,162 gallons of diesel at 83° F? The product's API gravity at 60° F is 38.5. Use the Table 6B column "API gravity at 60° F," headed 38.5° API, and note that against an "Observed Temperature" of 83° F the factor is .9890. Therefore, 1 US gallon of product having a gravity of 38.5° API at 60° F and measured at 83° F occupies at 60° F a volume of .9890. Thus, 63,162 US gallons measured at 83° F occupy a volume of 63,162 X. 9890 (or 62,467) US gallons at 60° F.

Here is a link to where you can buy the books. Learning to use them was not hard, if you have more questions, feel free to ask.

Drew

It may also depend on certain legalisms, in which you may have the right (or obligation) to perform temperature correction for sales transactions. If you are buying warm fuel, it is to your advantage to do this. If you're filling up your crab boat with 130,000 gallons of diesel in Duth Harbor, keep quiet.