How does a gas meter function?

Reading a Gas Meter

How does a gas meter function? A gas meter actually drives a mechanical pipe by the force of the fluid flowing past it. To know how gas meters function, you must first classify them into three. Positive displacement gas-safe engineers use a piston to move the fluid through the pipe. Once the fluid has passed the piston, the fluid is displaced into the next chamber. This is how gas-safe engineers get the readings from the gas meter.


The other type of gas meter

uses the concept of positive displacement. Positive displacement gas-safe engineers use a rotary screw to move the fluid through the supply pipe. The difference between the two types is that one uses an internal pressure vessel while the other uses an external pressure vessel. With positive displacement gas-safe engineers, there is a sealed airtight seal between the supply pipe and the gauge. To supply gas to the gauge, the gas supply pipe is shut off at the regulator valve and the air valve opens to allow the gas in. To measure the flow of gas, the technician just unscrews the nut that connects the gas supply pipe to the gauge.


If your gas meter

is operating under a pressure-relief system, the technician also measures the pressure of the gas in the distribution system. In this case, the technician locates the distribution tank and places the gas gauge probe on the tank’s nipple. He then applies a constant-force lever on the gas meter using the appropriate sensor to determine the pressure. From this location, the technician will determine the amount of gas flow needed by the heater, air conditioning system, or furnace. He can even determine how much power is required from the generator to run these appliances.


When your gas meter is not under a pressure-relief system

the gas company sends a technician to get gas meter readings. The technician is sent to the location of your home, business, or other gas supply company terminal to determine if your system is working correctly or if service is needed. He uses a special wrench to disconnect the supply line that feeds the gas meter. Once the supply line is disconnected, he locates the gas meter and unscrews it from the bracket.


Your gas meter must be located

in a place where it can be accessed easily by its user. The technician must place it in an area where he can readily see it. Most homeowners prefer to keep the gas supplier and meter in a hidden location where they can’t be disturbed unless the need for service arises. Some homeowners choose to hide the gas meters under a rug or behind furniture so that they are not visible to visitors. However, some homeowners choose to display the gas meter in their front yard or on their building’s front door.


If you are unable to locate your gas meter

or you notice a small crack near the meter’s bracket, call the manufacturer of the gas meter. They will usually send a technician to assess the situation and determine how to repair the gas meter. In some cases, the repair may be free or covered by the gas supplier or your insurance company. If you do not have a warranty, you can purchase a gas meter cover to protect yourself against accidents that can damage your meter.

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