![]() ![]() These calculations are frequently used for gas flow measurement applications as a slight change in temperature and/or pressure affects the fluid density. Smartmeasurement ’s user-friendly normalized to actual or actual to normalized calculators our allows our customers the flexibility to use their own reference conditions to come up with the correct answer. However, the problem with Normal or Standard conditions is that there are several different pressure and temperature references depending upon whom you talk to. Gas flow meter users need a reference condition to compare different flows existing at different flowing conditions of pressure and temperature. This conversion is performed using the ideal gas law. When sizing a gas flow meter actual flows in ACMH or ACFM must be converted to normalized flows (or Standard flow) in order to determine if a gas flow meter can be specified for a given application. If safety events, poor product quality, a production slowdown or environmental compliance issues occur, then the cost of failing to recognize the subtle differences in air and other gas flow-measurement technologies can be punitive. The cost of choosing the wrong flowmeter - in terms of extra maintenance, repairs, and spares in process plants can add up quickly to tens of thousands of dollars. SmartMeasurement’s thermal mass flow meters the ATMF and our new Coriolis flowmeters ALCM for gases offer a perfect solution for gas flow measurement solutions. Mass Flowmeters solve this problem by providing a direct mass flow reading which is immune to changes in process temperature and pressure. Not only this approach is expensive but inaccurate as one must add the inaccuracies of the volumetric flow meter, pressure and temperature sensors for the gas flowmeters overall accuracy. Volumetric flowmeters can compensate for the changes of temperature and pressure however, they must be used with temperature and pressure sensors and a flow computer to correct for these changes. Therefore, SmartMeasurement recommends only the use of direct mass flow measurement which automatically compensates for changes of either pressure or temperature or both. ![]() These flow technologies do measure gas however, the volume of gas can change greatly with a slight change in either pressure and temperature, making a calibrated volumetric flowmeter highly inaccurate. There are six to eight viable gas flow measurement technologies available today most of these technologies measuring volume such as turbine meters ALTM, Vortex ALVT, variable Area ALVAMT have been discussed in our liquid flow meter section. If measurement of gases is inaccurate or inconsistent, some potential outcomes include serious accidents, emergency shutdowns, unplanned maintenance, production slowdowns or cost overruns. is essential including safety, process control, product quality, production efficiency, environmental compliance and costs. The monitoring and measurement of gases in manufacturing and process plants from chemical, to oil/gas, wastewater, etc. ![]()
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