DFS2 Data Sheet

SAFSONIC DOPPLER FLOW SWITCH DFS2 · Single non-invasive clamp-on sensor · Pipe sizes DN25 to DN3000 · 10 LED Bar graph flow indicator · Single Form C Relay, SPDT · 0 - 2m/s (0 - 6ft/s) or 0 - 6m/s (0 -18ft/s) · Adjustable start-up timer for pump operation · Adjustable delay timer for relay · Selectable latching of relay · Low cost, Quick to install, Easy to use · No sensor fouling, Zero pressure drop Example Applications · Process control · Pump protection Example Liquids · Mining & Dredging Slurries · Paper & Food Pulps · Water & Sewerage Sludges The DFS2 includes a relay with adjustable high and low set point control and adjustable start-up delay and relay delay timers, two selectable velocity ranges, 0 - 2m/s (0 - 6ft/s) and 0 - 6 /s (0-18ft/s). Flow velocity is indicated on the 10 LED bar graph. DFS2 continuously measures the velocity of liquid in pipes using the non-invasive Doppler principle and energises a relay above or below the set points. The DFS2 is quick and easy to install with no holes in the pipe, no sensor fouling, no maintenance and no downtime for sensor installation. The Safsonic DFS2 is designed for use with liquids, which contain in excess of 0.01% suspended solids or bubbles, having a size greater than 100 microns. Features & Specifications Velocity Range 0 to 2 m/s (1 to 6ft/s) 0 to 6 m/s (1 to 20ft/s) Liquids Containing 0.01% solids >100micron Pipes 25-3000mm (1”-120”) Most pipe materials Accuracy 10 LED Bargraph, 1 LED resolution Repeatability ±2% Set points Two set points, Hi & Lo, 0 to 100% of range at 10 intervals Indication 10 LED bar graph, Signal strength, Hi Alarm, Lo Alarm Units Velocity m/s (ft/s) Range selection Selector switch for velocity range Power Supply 115/230Vac ±10%, 50/60Hz, (<6VA) 24VDC, ±10% (<4W) Outputs Relay Form C (<1A) Flow Rate Alarm Inputs Startup-delay timer reset Response Time 0-60s Adjustable startup-delay and relay-delay timers Electronics enclosure IP67 (NEMA 6) Polycarbonate 120 x 120 x 55mm HxWxD (5” x 5” x 3”) Transducer IP68 (NEMA 6P) Aluminium epoxy-faced 21 x 80 x 28mm HxWxD (0.8” x 3” x 1.1”) Failsafe mode Selectable relay latching on/off Temperature limits Sensor -20 to 90ºC (-4 to 194ºF) Electronics -10 to 50ºC (14 to 122ºF) Sensor Cable length 3m (9ft) Shipping 36 x 20 x 13cm (15” x 10” x 5.2”), 1.2kg (3lbs) Model No. DFS2-1 (115VAC 50/60Hz) DFS2-2 (230VAC 50/60Hz) DFS2-3 (24VDC) Model Example DFS2-1 = 115VAC 50/60Hz Standards CE Certified 07 www.flowmetrix.co.za enquiries@flowmetrix.co.za