Dwyer DTFW-3S-20W is a variable-area flowmeter designed for liquids and oil, with a temperature range of -40 to 200°F (-40 to 93°C). It offers a high level of accuracy, with ±2% FS for liquid/oil calibration and ±5% FS for air calibration. The flowmeter is compatible with liquids and gases, and features wetted materials such as 316 SS, brass or aluminum for the body, and Buna seals. It has a pressure limit of 1500 psig (100 bar) for DTFW-3S and 3000 psig (200 bar) for other DTFW models and DTFA. Repeatability is ±1% FS, and the flowmeter has a 2.5" (63.5 mm) diameter dial face.