What you should know and what to pay attention to.
At any petrol station you can try to cheat. If we are talking about filling the car with gas, there are nuances.
What is calibration and how it works
Almost all of the gas columns is mechanical flowmeter, which measures the amount pumped from the tank of gas. And the numbers on the display shows other counter – electronic. There’s a connection, but not direct, and customizable. It is easy to twist the right knobs and pumped into your tank of 0.7 liters will be shown as a quart. To the eye this difference is nearly impossible to determine, but there is a method of indirect assessment that is triggered often enough.
The best thing to do to arrive to the gas station with a totally empty or close to that tank. Then you can at least roughly estimate how much reset the counter. Please fill to the full, and look at the counter. The 43-litre tank can be filled not more than 37 liters, or about 85%. A torque meter can show us a number 38 or 39 – it is quite normal, or rather fit into the average theft. Therefore, this note makes no sense. But if the numbers are close to 41 and above – should be alarmed. After all, you in the balloon will fill the same 37 litres, and the pay make for 41.
The use of methane or soda
The pressure in the cylinder depends on the density of matter in it but not of its type. If the gas contains air bubbles – counter will show a full tank, but the energy effect from such a mixture will be much lower. Propane-butane, which are usually run by a car, has a rare and large bubbles of air. And if you inject in that methane, the mixture becomes like a soda – it appears a lot of small bubbles. It is clear that as fuel it is much worse than pure gas, and drive to this mixture you can approximately 30% less.
In the cold season propane-butane mixture is compressed, causing the pressure in the gas bottle a few drops. If it is stable at 11 atmospheres or higher year round – this should alert you. This effect gives the same “soda”, but it lasts long – an hour and a half, so you can wait and fill up more or less normal gas. But if near the geysers you will notice the cylinders labeled “methane” is right should you be alerted.
Modified vapour eliminator
Experienced drivers often do so: please fill the tank to full, but it does not sit in the car, and stand next to the column and carefully look at the scoreboard. On a normal column, the gas is injected at a steady rate, and when the volume filled – the download process is stopped automatically. But if they see that the download speed starts to slow down, and the pump does not stop – take the hand of the tanker and not let him off the pump. And when the scoreboard goes figures 45-48, despite the fact that the container is only rated for 43 litres – feel free to raise a scandal, citing the fact that the column is defective.
To bottle more than it is placed, not the automation will not allow it. But you can rearrange the vapour eliminator after the flowmeter. In the end, it is considered to be the pumped volume of the gas-steam mixture, and the container you receive directly the gas, of course, in much smaller quantities. And when the container is completely filled, the entire mixture through the vapour eliminator begins to be pumped back into the column, but on the scoreboard it looks like the injection of gas into your tank. That is not explosive, but the ability to catch a cheater on the hot have a – column-that illegally modified.
The arguments that will come in handy in a dispute with the tankers
The vast majority of manipulation of the gas column – the handiwork of tankers or those who run the object. The owners of gas-filling stations rarely go to such deception – they have other methods of earnings. Therefore, the owner may well be on your side and all will end in a compromise. Do not hesitate to threaten and make trouble, sometimes without it can not do. And don’t forget to use described in this article uses the terms – this will produce the required impression. When the discussion starts with the use of clever words and terms, feel free to skip most of the information on deaf ears.
For you it is only important that the gas occupies a certain volume that you buy. And to the same amount of gas began to occupy less space, compress it, but the pressure in the column in the valves that is simply not enough. That is, if you sold 5 gallons of gas instead of 6, it means that you cheated on a litre. And no matter how much it weighs – you buy gas in liters, not in kilograms.
