Oxyview Flow Meter 1 3/8″ X 7/16″/0-3 L/M
From the product description, check product page for current description, price and availability:
OxyviewÂ is a pneumatic real-time oxygen flow meter for use with oxygen cylinders, concentrators and other oxygen delivery systems. This device can measure the flow rate of oxygen from 0-6 l/m. It can be attached at all times and used to assure and measure oxygen flow rate. No batteries are required for product operation. This unique flow meter works in any position and is resistant to heat, humidity and altitude.
Most regulators that homebrewers use for oxygenating wort are simple setups – Example – via MoreBeer. They attach to disposable oxygen tanks (typically sourced from a local hardware store) and are little more than on and off valves. No gauges, no pressure control (other than the degree to which you open and close the valve) and no flow control.
Time and rate give you an idea of how much oxygen you’re really adding to your wort. Time is easy to track. Rate, not so much, at least with typical homebrew O2 regulators. If you want more or less oxygen for your next batch, it’s mostly a guessing game.
The Oxyview Flow Meter is a pneumatic (no electricity required) real-time oxygen flow meter that works in any position. Flow rate is displayed in liters per minute. This particular model has a range of 0 to 3 LPM. This allows you to know what rate of oxygen is going into your wort.
I’ve used one of these for years and it has worked great for me. Note that these are typically used for medical applications. As such, the barb size isn’t what I’d call standard, at least by homebrewing standards. You will need to figure out tubing and connections to your existing regulator and aeration/oxygenation stone.
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions.