NPF3W5 Digital Flow Sensor |
| Mode | NPF3W504 | NPF3W520 | NPF3W540 | NPF3W511 | NPF3W521 | ||
| Applicable fluid | Water and Ethylene glycol aqueous solution (with viscosity of 3 mPa·s [3 cP] or less) | ||||||
| Detection method | Karman vortex | ||||||
| Rated flow range | 0.5~4L/min | 2-16L/min | 5-40L/min | 10~100L/min | 50~250L/min | ||
| Fluid temperature | 0 to 90°C (No freezing or condensation) | ||||||
| Accuracy | Display value: ±3% F.S. Analog output: ±3% F.S. | ||||||
| Repeatability | ±2% F.S | ||||||
| Temperature characteristics | ±5%F.S. (25°C standard) | ||||||
| Operating pressure range | 0-1MPa | ||||||
| Proof pressure | 45 kPa or less at the maximum flow | 60 kPa or less at the maximum flow | |||||
| Analog output | Response time | 1s | |||||
| Voltage output | Voltage output: 1-5V Output impedance: 1kΩ | ||||||
| Current output | Current output: 4-20mA Max load impedance: 300Ω for DC12V, 600Ω for DC24V | ||||||
| Indicator light | For power supply status, flow rate indicator(Blinking speed changes in response to flow rate), and other error indicator | ||||||
| Power supply voltage | DC12~24V±10% | ||||||
| Current consumption | 30mA or less | ||||||
| Environment | Enclosure | Ip65 | |||||
| Operating temperature range | 0 to 50°C (No freezing or condensation) | ||||||
| Op erating humidity ran | Operation, Storage: 35 to 85% R.H. (No condensation) | ||||||
| Withstand voltage *4 | 1000 VAC for 1 minute between terminals and housing | ||||||
| Insulation resistance | 50 MΩ or more (500 VDC measured via megohmmeter) between terminals and housing | ||||||
| Standards and regulations | CE | ||||||
| Wetted parts material | PPS, SUS304. FKM. SCS316 | ||||||
| Non-grease | |||||||
| Piping port size 6 | 3/8 | 1/2 | 3/4 | 1 | 11/2 | ||
| Water sensor Specially used for water flow sensing to transfer data to the main board | Main board Store memory data, record data, real-time display | Function board Achieve the switch between functions and applications of rapid response |
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Vortex frequency: V: flow velocity; K: proportional constant (depending on the size and state of the vortex generator) and then the fluid frequency is detected.