Tank size Now don’t be fooled by compressor manufacturers who state the size of the air tank (“a 200 liter compressor”). Again: pressure is ‘how strong’, capacity is ‘how much’. What’s the difference between a very small and a very large compressor? It’s not the pressure, it’s the capacity. It is expressed in CFM (cubic feet per minute) or liters per second or m3 per minute or hour. What size/capacity (CFM) do I need?Ĭapacity is the amount of air that the compressor can pump out. If it is a replacement compressor, you can buy a compressor with the same pressure rating as the previous one. Most machinery also operates at 100 psi, but to be sure check the specs or ask the manufacturer. If not, 100 psi (7 bar) is safe to assume for hand tools. So how much pressure do YOU need? Look at the tools or machines you use, it should state the required minimum pressure. Sometimes even up to 200 – 300 bar or more ( scuba diving and paintball for example). For this reason, most people only need a compressor with a maximum pressure of 7 bar.įor some applications, an higher pressure is needed, like 15 or 30 bar. Most compressed air equipment is designed to operate at around 90 – 100 psi (6 – 7 bar). The needed capacity of your air compressor is dictated by the air consumption of all your tools and machines together (also depending how many you use at the same time). The pressure you need is dictated by the kind of tools / equipment you use (‘this nailer needs 100 psi’, or ‘the machine operates at 125 psi’). But their capacity is the big difference. Most compressors for sale at the various hardware shops and compressor dealers are between 125 and 175 psi ( 8.5 – 12 bar) pressure. What’s the difference between a very small and a very large compressor? It’s not the pressure, it’s the capacity.Ĩ bar (115 psi) pressure, low capacity compressor!ħ.5 bar (115 psi) pressure, high capacity compressor. Remember: pressure is ‘how strong’, capacity is ‘how much’. Capacity is expressed in CFM (cubic feet per minute), liters per second or cubic meters per hour.Pressure is expressed in bar or PSI (pounds per square inch).However, it’s always recommended to verify the accuracy of the calculations and consider any specific calibration or conversion factors that may be applicable to the system in question.Pressure and capacity are the two main specifications to look for when buying an air compressor. By inputting the appropriate values, users can estimate the corresponding pressure based on the provided formula. The Voltage to Pressure Calculator serves as a helpful tool for applications where pressure readings are indirectly obtained through voltage measurements. However, it’s important to note that the actual relationship may vary depending on the specific system and sensor characteristics. Additionally, this calculation assumes a linear relationship between voltage and pressure. It is essential to ensure that the voltage readings correspond accurately to the pressure range and that the voltage limits are set correctly. The result is then displayed on the webpage. Upon clicking the “Calculate” button, the JavaScript code retrieves the input values and applies the formula to calculate the pressure. To use the calculator, the user needs to input the pressure range, voltage reading, and the voltage lower and upper limits. Voltage Upper Limit represents the upper limit of the voltage range.Voltage Lower Limit represents the lower limit of the voltage range.Voltage Reading represents the voltage measured.Pressure Range refers to the specified range of pressures in psi.Pressure represents the calculated pressure value.Pressure = Pressure Range * (Voltage Reading – Voltage Lower Limit) / (Voltage Upper Limit – Voltage Lower Limit) The formula used to calculate the pressure from voltage readings is as follows: This calculator is particularly useful in applications where voltage measurements are used to indirectly determine pressure values. The Voltage to Pressure Calculator is a tool designed to estimate the pressure based on voltage readings within a specified range. About Voltage to Pressure Calculator (Formula)
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