Flow meter vs regulator3/16/2024 WARNING: High gas withdrawal rates may cause regulator freeze up and will require cylinder manifolding. In applications where back pressure in excess of 2 PSIG can be expected, a regulator equipped with a flow meter should be used. Set flow to 20lpm with the peashooters and the flow meter was reading 24lpm approx, so quite a difference there. Here are some important things you need to know for proper meter sizing: Line pressure Type of gas being metered. Finding the right size of diaphragm meter, rotary meter, or turbine flow meter can be tricky. I swapped the Tig to another flow meter and got exactly the same results. Review our useful sizing tips below to make sure you select the right meter and regulator sizes for your project. Metering valves, kinked hoses or even very long hoses are restrictions that can cause back pressure. So if I adjusted the flow meter to read 10lpm then the peashooter would be under. Back pressure is caused by a restriction in the equipment downstream of the flow gauge. Self reseating relief valve (not designed to protect downstream equipment)Ī regulator equipped with a flow gauge is not accurate when a back pressure in excess of 2 PSIG exists at the outlet. High flow CO2 applications (SR 310 100 PSIG) (SR 311/312 100 SCFH) with adequate supply or sourceġ.75" (44.5 mm) diaphragm - fabric reinforced neoprene ![]() Unique design and construction features make these units equally suited for applications from the industrial jobsite to the laboratory.ĭesigned for CO2 application (non-siphoned tube cylinders) ![]() HRF 2400 series regulator/flowmeter combination are specially designed for MIG, TIG, and other inert gas welding applications.
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