How To Check The Pressure Gauge | The Science



The Science

How to check the pressure gauge

To gauge the correct pressure measured without distorting the information, it should be checked regularly. At the same time determine the correct indications for appearance of this device is virtually impossible. To make the check, check it with the pressure gauge readings, which clearly shows the accurate readings, or calculate the pressure of the gas, and then measure it using a pressure gauge and collate evidence.

How to check the pressure gauge

You will need:

the reference pressure gauge and thermometer

Instruction how to check the pressure gauge

Step 1:

In order to check the gas tank pressure, the pressure gauge sensor set therein. For this, as there are special rules for fittings. When the value is locked, remove the gauge and install on this place the reference instrument. Collate the evidence and the simple standard pressure gauge, check the readings. If the readings do not coincide with the reference gauge, adjust it to the same conditions gauges showed the same results.

Step 2:

To tune in to the pressure gauge housing is usually provided for adjusting bolts. With electronic pressure gauge algorithm of actions is the same, just keep in mind that this device has inertia, so you need to keep reading from 8 to 10.

Step 3:

If there is no reference manometer, ventilate properly gauge readings, pre-calculating the pressure. To do this, take a vessel of known volume. The air therein is at atmospheric pressure, which can be measured by a barometer, and the temperature is room temperature. Then, close the bottle tightly and start heating it by controlling the temperature and the pressure to be increased. Calculate the pressure inside the cylinder, dividing the final temperature of the home. Then multiply the result by the atmospheric pressure. P2 = T2 • P1 / T1.

Step 4:

If the gauge readings at a given temperature does not coincide with the previously calculated, adjust it so that it reads as much as happened in the calculation. When making payments, keep in mind that the temperature is measured in degrees Kelvin, which add to the number of degrees Celsius 273. Scale of pressure gauges, as a rule, are graduated in kg / cm², the calculation will be made in Pascals or millimeters of mercury, so you need to translate it the same unit measurements and then compare.