Wireless Connection Installation and Sensor Removal S401 can be installed under pressure through a 1/2” ball valve. The sensor tip must be in the pipes center. 170 160 150 Outer Diameter Height of Valve Top end of ball valve Installation depth= Height of Valve + Outer Diameter / 2 Engraved depth scale Read “installation depth” here! S401 / S421 Flow and Consumption Meter • Pipes sizes available: DN15, DN20, DN32, DN40, DN50, DN65, DN80 • Fits your needs: various process connections available (R-thread, EN 1092-1 flange or ANSI flange) • Exchangeable sensor unit (easy sensor swap) • Optional flow conditioner, no need for a straight inlet anymore The unique wireless connection on every flow meter is unlike it's competition. Through the free S4C-FS App, live values can be read from the meters. But not only during operation, the smartphone app is useful. Especially during installation and setup all settings can be performed using a smartphone, there is no need to carry a PC and an interface on site. This saves a lot of time and is the easiest way to get reliable sensor readings. Every sensor is protected by default, to perform changes on the flow meter, first a QR code must be scanned. The S421 sensor unit can be easily removed for calibration. (Closing cap separately available) S401 S421 • Tube diameters of DN25 and above • 2 installation types: center installation and 100 mm insertion depth installation for bigger pipes (> DN250) • Installation under pressure through 1/2” ball valve 3/8
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