Pressure gauges are instruments used to determine the amount of pressure in the gases and liquids in containers. You see them in factories, where the goal is to know the pressure in order to insure safety and make things work better. Pressure gauges convert pressure into a movement that’s displayed on a dial with numbers and lines.
Factory pressure gauges help ensure that machines are operating safely. At a soda can factory, for instance, pressure gauges monitor pressure within cans to prevent them from exploding. Lacking those gauges, workers would not know whether the pressure was too high or too low, which would invite accidents.
When selecting a pressure gauge, consider what type of pressure you wish to measure, how much pressure there will be and the location of the gauge. There are several types of gauges which include bourdon tube gauges, diaphragm gauges, and digital gauges. It’s important in getting the correct readings to choose the correct one.
How to Read a Pressure Gauge Reading a pressure gauge is relatively simple. The needle of the dial shifts right or left correspondingly to the pressure. The gauge will have numbers on the dial representing the units of pressure, usually psi or kPa (pounds per square inch or kilopascals). The markings must be looked-at and read-off properly in order to avoid errors.
To ensure that a pressure gauge provides accurate measurements, it should be tested regularly. This is called calibration. Calibration refers to comparing the gauge’s reading to a known standard and making adjustments as necessary. (If a gauge is improperly calibrated, it can yield incorrect readings, which can be very dangerous in a factory.). Workers can be confident the readings are accurate and reliable by checking gauges regularly.
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