16.2 bar = 1,620 kPa
error of 1.5bar
1 bar = 14.5 psi. If you mean gauge pressure, ie pressure above atmospheric, 6 bar would be 87 psig
In water, every 10 meters you go down, the pressure increases by 1 bar, approximately. To this you must add the air pressure, which is also approximately 1 bar (depending on whether you want gauge pressure or absolute pressure).
The 'g' added on to bar means 'gauge', as opposed to bara, meaning 'absolute'. The 'zero' of a normal gauge is normally set at atmospheric pressure (things like tire pressure gauges, water gauges etc.) These gauges will read as "10 bar" but really mean that the absolute pressure is 10 bar + atmospheric pressure (~1.01325 bar). Some gauges however are absolute gauges. These might include weather gauges, or gauges on closed processes. bara = barg + atmospheric pressure
I'm not sure if this is your issue but the "oil pressure" gauge should max out (about 5 Bar) when the engine is cold and first started. Porsches use fairly reliable VDO gauges! As your oil warms up the pressure should settle halfway (2.5 bar on one of my Porsches and 3 bar on the other). If the pressure gauge is stuck at 5 bar all the time, then chances are the sender unit needs replacement or cleaning.
Bar: 栏/Lán Gauge: 规/Guī
In the SI system the pressure unit is the Pascal (after the French maths genius) which is defined as 1 Newton per square meter. This is a very small unit. Atmospheric pressure is about 105 Pascals, and this is called the Bar. You have probably seen in weather forecasts the pressure given in millibars, the normal atmospheric pressure is 1000 mb, and the equal pressure contours on the weather maps give the millibar figure. These contours are called Isobars, as they are lines of constant pressure.Psi stands for pounds per square inch, which is I imagine easier to grasp, and is probably more widely used in the US. In Europe and the UK, in power plants and other industries, the pascal - kilopascal - bar units are used. I was brought up on psi and had to convert mid life, I have got used to bars but find kilopascals don't come easily.It is useful to remember that 1 bar = 14.5 psi. You will also come across psig, which just means pressure aboveatmospheric, it stands for psi gauge, as a gauge normally reads zero at atmospheric pressure. If you see psia, this means psi absolute, the pressure above vacuum, where atmospheric pressure = 14.5 psia.
d*d^2/162 28*28/162 4.839
D^2/162
diameter square of the bar. Divided by 162. gives W/1m length
d*d/162
Air at 10 celsius and 1 bar(absolute) has density 1.25 kg/m3. By 6 bar do you mean gauge or absolute pressure? To apply a pressure factor you must use absolute, ie the pressure above a vacuum. Normal atmospheric conditions are 1 bar (abs). If you mean 6 bar(abs) the density becomes 6 x 1.25 = 7.5 kg/m3. On the other hand if you mean 6 bar (gauge) this is 7 bar (abs) and the density would be 7 x 1.25 =8.75 kg/m3. Either way, you just divide the weight of air in kg by the density to get the volume.