16.2 bar = 1,620 kPa
Absolute pressure is calculated by adding atmospheric pressure to the gauge pressure. Standard atmospheric pressure is approximately 1.01325 bar, so for a gauge pressure of -0.2 bar, the absolute pressure would be 1.01325 bar - 0.2 bar, which equals approximately 0.81325 bar. Therefore, the absolute pressure is about 0.813 bar.
A pressure gauge measures pressure in a system relative to atmospheric pressure, displaying the reading in units such as psi or bar. A manometer measures pressure by balancing the weight of a liquid with the pressure being measured, often displaying pressure differentials in terms of inches or millimeters of the liquid column. In summary, a pressure gauge gives absolute pressure readings, while a manometer measures pressure differentials.
Barometer.
1 bar = 14.5 psi. If you mean gauge pressure, ie pressure above atmospheric, 6 bar would be 87 psig
1 barg stands for 1 bar gauge pressure, which is the pressure measured above atmospheric pressure. It indicates a pressure of 1 bar higher than ambient atmospheric pressure.
To convert from barG (gauge pressure) to barA (absolute pressure), you simply add atmospheric pressure to the gauge pressure. Assuming standard atmospheric pressure is around 1 bar, the conversion would be -0.02 barG + 1 bar = 0.98 barA.
The pressure gauge on a flow meter regulator typically reads in units of psi (pounds per square inch) or bar. Some gauges may also display pressure in kPa (kilopascals) or mmHg (millimeters of mercury), depending on the specific application and regional preferences. These units help users monitor and regulate the pressure of the gas or liquid flowing through the system.
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
A pressure gauge is used to measure pressure. It typically consists of a dial or digital display that shows the pressure reading in units such as psi, kPa, or bar. The gauge is connected to the system or container where pressure is being measured, and it provides a visual indication of the pressure level.
Bar: 栏/Lán Gauge: 规/Guī
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.
The percentage error of the gauge can be calculated using the formula: (Error / Actual Value) x 100%. In this case, the error is 0.15 bar and the actual value is 10 bar. Therefore, the percentage error would be (0.15 / 10) x 100% = 1.5%.