Description
Lightweight water flow switch with digital display can monitor data in real time. It is designed with water sensor to transmit data to the mainboard, selectable signal output PNP or NPN.
Specification
| Model | ATO-NPF3W72004 | |
| Port Size Rc (PT) | 1/2 inch | |
| Applicable Fluid | Water, Ethylene glycol aqueous solution (with viscosity of 3 MPa·s [3 cP] or less) | |
| Detection Method | Karman vortex | |
| Rated Flow Range | 2~16L/min | |
| Display Flow Range | 1.7~22.0L/min | |
| Set Flow Range | 1.7~22.0L/min | |
| Smallest Settable Increment | 0.1L/min | |
| Conversion of Accumulated Pulse | 0.1L/pulse | |
| Fluid Temperature | 0 to 90°C (No freezing or condensation) | |
| Display Unit | Instantaneous flow: L/min, Accumulated Flow: L | |
| 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 | 45kPa or less at the maximum flow | |
| Accumulated Flow Range | 99999999.9L | |
| By 0.5L | ||
| Switch Output | / | NPN or PNP |
| Max. Load Current | 80mA | |
| Max. Applied Voltage | DC28V | |
| Internal Voltage Drop | NPN: 1 V or less (at load current of 80 mA) PNP: 1.5 V or less (at load current of 80 mA) |
|
| Response Time | 0.5s/ 1s/ 2s | |
| Output Protection | Short-circuit protection | |
| Analog Output | Voltage Output | Voltage output: 1 to 5 V Output impedance: 1 kΩ |
| Current Output | Output current: 4 to 20 mA Max. load impedance: 300 Ω for 12 VDC, 600 Ω for 24 VDC |
|
| Response Time | 0.5s/ 1s/ 2s (linked with the switch output) | |
| Hysteresis | Variable | |
| External Input | Voltage free input: 0.4 V or less (Reed or Solid state), input for 30ms or longer | |
| Display Method | 2-screen display (Main screen: 4-digit, 7-segment, 2-color, Red/Green Sub screen: 6-digit, 11-segment, White) Display values updated 5 times per second |
|
| Indicator Light | Output 1, Output 2: Orange | |
| Power Supply Voltage | DC12~24V±10% | |
| Current Consumption | Below 50mA | |
| Environment | Enclosure | IP65 |
| Operating Temperature Range | 0 to 50°C (No freezing or condensation) | |
| Operating Humidity Range | Operation, storage: 35 to 85% R.H. (No condensation) | |
| Withstand Voltage | 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, UL(CSA), RoHS | |
| Wetted Parts Material | PPS. SUS304. FKM. SCS13, Non-grease | |
| Weight | 1kg |
Flow Rate Diagram
Voltage Output: A: 1V, B: 1.5V, C: 5V
Current Output: A: 4mA, B: 6mA, C: 20mA
Pin Number & Wire Color
| Pin Number | Content | Wire Color |
| 1 | DC (+) | Brown |
| 2 | OUT2 | White |
| 3 | DC (-) | Blue |
| 4 | OUT1 | Black |
Body Dimensions (Unit: mm)
| Basic Dimensions | ||||||||||||
| A | AA | B | D | E | F | G | H | J | K | L | N | P |
| 78 | 54 | 30 | 60 | 40.6 | 15.2 | 27 | 18 | 39 | 30 | 18 | 13.6 | φ2.7 deep 12 |
| Bracket Dimensions | |||||||
| S | T | U | V | W | WX | Y | Z |
| 28 | 22 | 32 | 40 | 50 | 4.5 | 5 | 1.5 |
M8 Lead Wire Dimensions (Unit: mm)
Details
Tips: What is a digital water flow switch used for?
Digital water flow switch is used for electric water heaters, solar water heaters, air conditioners and other water systems for water circulation control, water inlet and outlet control, water heating control, water pump switch control, solenoid valve on-off control or water outlet power-off, water outlet power-on control and other processes. It is a water sensor that converts the water flow into an on-off electrical signal after reaching a certain flow rate.
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