Measurement Flow Accuracy 1.5 % o.RDG ±0.3 % FS Selectable units l/min, cfm, kg/h, m3/h Measuring range see table on the previous page Repeatability 0.5 % o.RDG Sensor Thermal mass flow sensor Sampling rate 10/sec Turndown ratio 100:1 Response time (t90) 0.5 sec Consumption Selectable units m³, ft³, l, kg Pressure Accuracy 0.5 % FS Selectable units bar, psi Measuring range 0 ... 10 bar(g) Sensor Piezo resistive sensor Reference conditions Selectable conditions 20 °C 1000 mbar (ISO1217), 0 °C 1013 mbar (DIN1343) freely adjustable General data Configuration Wireless S4C-FS App for mobile phones PC Software S4A PC software for download and data analyzes Display Integrated 4 digit LED Data Logger Storage 8 Mio. values Material Process connection Aluminum alloy Housing PC + ABS Sensor Ceramic, glass coated Metal parts Aluminum alloy Miscellaneous Electrical connection 2 x M8 (4 pole) Protection class IP54 Approvals CE, RoHS, FCC Process connection G-thread Weight 0.45 ... 1.3 kg (depends on model) Operating conditions Medium Air, N₂, O₂, CO₂ and other gases Medium quality ISO 8573: 4.4.3 or better Medium temperature 0 ... 50 °C Medium humidity < 90 % rH, no condensation Operating pressure 0 ... 16 bar(g) Ambient temperature 0 ... 50 °C Ambient humidity < 95 % rH Storage temperature -30 ... 70 °C Transport temperature -30 ... 70 °C Pipe sizes DN8, DN15, DN20, DN25, DN32 Signal / Interface & Supply Analog output Signal 4 ... 20 mA (4-wire), isolated Scaling 0 ... max flow freely adjustable Load Max 250 Ω Update rate 3/sec Pulse output Signal Switch output, normally open, max 30 VDC, 200 mA Scaling 1 pulse per consumption unit Fieldbus Protocol Modbus/RTU Supply Voltage supply 15 ... 30 VDC Current consumption 120 mA @ 24 VDC Data interface Connection USB micro Technical Data S418 Compact Thermal Mass Flow Meter 5/6
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