| ERS are generally used in a number of ways but their | | | | the rate of flow. |
| main or basic aim is just to measure the rate of flow | | | | In a number of industries, like food processing, |
| of a certain substance passing through a pipe, tube | | | | HVAC, water management, chemical and industrial |
| or chamber. | | | | manufacturing there are many needs to measure the |
| Why would someone want to do this? You could | | | | rate of flow of various liquids and gases through small |
| easily say that one of the reasons is just to assess | | | | or large machinery. |
| the well being of the machine that is really being | | | | For example, the production of a number of |
| measured. One more reason might be to assess that | | | | processed foods is automated. There might be a |
| the machine is operating rightly. | | | | human operator that needs equipments like a flow |
| Peak flow meters are mainly used to measure the | | | | meter to check that the correct amounts of all the |
| rate of flow of air out of the lungs. Peak flow | | | | ingredients are going into the machine. If the |
| meters are used to gauge or assess the condition of | | | | incorrect quantities are used the food really does not |
| lungs of a person. This is also used as part of a test | | | | taste correct or might have to be recalled also. |
| of fitness. However a peak flow meter is commonly | | | | In all types of industries there are a various different |
| used to easily determine whether someone is | | | | types of flow meters. Some of the most common |
| asthmatic or not and is also used to manage the | | | | types of flow meters used are the thermal dispersion |
| condition once the problem is diagnosed. | | | | flow meters and ultrasonic flow meters. They can |
| A common type of flow meter is the peak flow | | | | easily measure the rate of flow of both liquids and |
| meter, in that it uses the method of displacement to | | | | also gases so have a number of applications. |
| mainly determine the rate of flow of air. The method | | | | Thermal dispersion flow meters have an idea that it |
| of displacement is a float within a space that is truly | | | | mainly uses the change in heat from a certain heat |
| confined like a tube or a pipe. | | | | source located within the tube or pipe. |
| When air generally passes through the pipe or the | | | | This change in heat will directly be related to the rate |
| tube it easily moves the float. The distance that the | | | | of flow of the liquid or gas that is passing through |
| float generally moves indicates or is a correlation of | | | | this heat source. |