Cylinders and tanks for liquefied gases are used in many industrial situations. The semiconductor industry uses these gases during the fabrication of wafers. They are also used in metal deposition. The welding industry also utilizes this kind of gas cylinder. They are also found in various applications requiring cryogenics. The standard method for determining the amount of gas in a cylinder would be to use a pressure transducer. But this is not feasible in the case of liquefied gas, because the pressure will remain high while there is any liquid at all in the tank, and will suddenly drop to almost zero as the last of the liquid boils off.
Therefore, weight must be used to monitor the amount of liquid remaining in the cylinder. These types of scales are called cylinder scales. They are designed with a platform size to match the diameter of the gas cylinder, which usually has a 9″ diameter. It is also important for the scale to have a very low profile, so that it will be much easier to roll a filled cylinder onto the platform, or remove the empty cylinder. Because there is often a significant amount of shock loading of the scale during this process, stainless steel load sensors are ideal.
While a digital indicator on the scale may be used to view the remaining weight, cylinder scales are often connected to other process equipment using analog current or voltage outputs, or digital signals.
Cylinder Scales
Cylinders and tanks for liquefied gases are used in many industrial situations. The semiconductor industry uses these gases during the fabrication of wafers. They are also used in metal deposition. The welding industry also utilizes this kind of gas cylinder. They are also found in various applications requiring cryogenics. The standard method for determining the amount of gas in a cylinder would be to use a pressure transducer. But this is not feasible in the case of liquefied gas, because the pressure will remain high while there is any liquid at all in the tank, and will suddenly drop to almost zero as the last of the liquid boils off.
Therefore, weight must be used to monitor the amount of liquid remaining in the cylinder. These types of scales are called cylinder scales. They are designed with a platform size to match the diameter of the gas cylinder, which usually has a 9″ diameter. It is also important for the scale to have a very low profile, so that it will be much easier to roll a filled cylinder onto the platform, or remove the empty cylinder. Because there is often a significant amount of shock loading of the scale during this process, stainless steel load sensors are ideal.
While a digital indicator on the scale may be used to view the remaining weight, cylinder scales are often connected to other process equipment using analog current or voltage outputs, or digital signals.