Today there may be different kinds of flow meters used by different industries as required by their various needs. These needs may require many different flow meters . Some needs may require turbine flow to be used for measurement of natural gas or liquid flow, as they restrict the flow less than other flowmeters might. Often ease of installation combined with portability and accuracy might result in the use of modern ultasonic flowmeters. A visit to an instrumentation specialist might be in order if you are not sure which flowmeter might be best for your application.