Glass Tube Rotameter is used to measure the gas flow rate through an orifice or a series of pipes. There are many different types of Glass Tube Rotameters currently on the market; most of them work based on gravity. The airflow causes the ball to rise in the graduated column, while gravity pushes it down. This leads to an accurate measurement of the flow rate, usually in liters per minute. Most Glass Tube Rotameters are also equipped with a dial to set the flow rate to the desired rate. Reading the Glass Tube Rotameter from the top is fairly simple.
step 1
Install the Glass Tube Rotameter on a flat surface. It is important to keep the meter level. You may need to use clamps to secure the Glass Tube Rotameter to a solid object; some are too large to stand on their own.
Step 2
Connect the gas source to the Glass Tube Rotameter through the pipe and turn on the gas. Some rotameters are equipped with standard fittings suitable for various sizes of pipes. You may need to buy fittings from a hardware store.
Step 3
Find the ball floating in the middle of the Glass Tube Rotameter column. Look at the bottom of the ball to see where it aligns with the scale on the side of the meter. This is the flow. The Glass Tube Rotameter is marked from top to bottom, and the flow rate increases to decrease, similar to a thermometer. The scale will vary according to the brand of Glass Tube Rotameter.
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