Digital Flow Switch for Water Size 3/4″

Digital Flow Switch for Water Size 3/4″ with digital display for real-time monitoring, ±2% accuracy, measuring water and ethylene glycol aqueous solution, fluid temperature 0~90?. This water flow switch comes with a water sensor, which is designed for flow sensing to transmit data to the mainboard, Selectable signal output PNP or NPN.

Overview Digital Flow Switch for Water Size 3/4″

A lightweight water flow switch with a digital display can monitor data in real-time. It is designed with a water sensor, PNP, or NPN signal output for transmitting data to the mainboard.

Digital Flow Switch for Water Size 3/4"
Digital Flow Switch for Water Size 3/4″

What are the functions of water flow switches?

  • Detect whether the liquid in the pipeline flows and whether the flow meets the requirements, and at the same time, the on-off state of a signal is provided by the switch electrical contact.
  • The equipment system judges the working status of the pipeline system by detecting whether there is a signal or control current passing through this switch, and gives the corresponding control or operation mode or measures.
  • It is used to detect the flow of liquid in the water circulation pipe network system of the central air conditioner, the automatic sprinkler fire extinguishing system of the fire protection system, and a certain type of liquid circulation cooling system pipeline.

The Specifications of Digital Flow Switch for Water Size 3/4″

ModelATO-NPF3W74006
Port Size Rc (PT)3/4 inch
Applicable FluidWater, Ethylene glycol aqueous solution (with viscosity of 3 MPa·s [3 cP] or less)
Detection MethodKarman vortex
Rated Flow Range5~40L/min
Display Flow Range3.5~55.0L/min
Set Flow Range3.5~55.0L/min
Smallest Settable Increment0.1L/min
Conversion of Accumulated Pulse0.05L/pulse
Fluid Temperature0 to 90°C (No freezing or condensation)
Display UnitInstantaneous flow: L/min, Accumulated Flow: L
AccuracyDisplay value: ±3% F.S. Analog output: ±3% F.S.
Repeatability±2% F.S
Temperature Characteristics±5% F.S. (25°C standard)
Operating Pressure Range0~1MPa
Proof Pressure45kPa or less at the maximum flow
Accumulated Flow Range99999999.9L
By 1L
Switch Output/NPN or PNP
Max. Load Current80mA
Max. Applied VoltageDC28V
Internal Voltage DropNPN: 1 V or less (at load current of 80 mA)
PNP: 1.5 V or less (at load current of 80 mA)
Response Time0.5s/ 1s/ 2s
Output ProtectionShort-circuit protection
Analog OutputVoltage OutputVoltage output: 1 to 5 V Output impedance: 1 k?
Current OutputOutput current: 4 to 20 mA
Max. load impedance: 300 ? for 12 VDC, 600 ? for 24 VDC
Response Time0.5s/ 1s/ 2s (linked with the switch output)
HysteresisVariable
External InputVoltage free input: 0.4 V or less (Reed or Solid state), input for 30ms or longer
Display Method2-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 LightOutput 1, Output 2: Orange
Power Supply VoltageDC12~24V±10%
Current ConsumptionBelow 50mA
EnvironmentEnclosureIP65
Operating Temperature Range0 to 50°C (No freezing or condensation)
Operating Humidity RangeOperation, storage: 35 to 85% R.H. (No condensation)
Withstand Voltage1000 VAC for 1 minute between terminals and housing
Insulation Resistance50 M? or more (500 VDC measured via megohmmeter) between terminals and housing
Standards and RegulationsCE, UL(CSA), RoHS
Wetted Parts MaterialPPS. SUS304. FKM. SCS13, Non-grease
Weight1kg

Flow Rate Diagram

  • Voltage Output: A: 1V, B: 1.5V, C: 5V
  • Current Output: A: 4mA, B: 6mA, C: 20mA
Digital Flow Switch for Water Size 3/4" - Flow Rate Diagram
Flow Rate Diagram

Pin Number & Wire Color

Digital Flow Switch for Water Size 3/4" - Pin Number and Wire Colour
Pin Number and Wire Colour
Pin NumberContentWire Color
1DC (+)Brown
2OUT2White
3DC (-)Blue
4OUT1Black

Body Dimensions (Unit: mm)

Digital Flow Switch for Water Size 3/4" - Body Dimension
Body Dimension

Basic Dimension

AAABDEFGHJKLNP
9871386848.619.2322849352816.8?2.7 deep 12

Bracket Dimension

STUVWWXYZ
34304248584.551.5

M8 Lead Wire Dimensions (Unit: mm)

Digital Flow Switch for Water Size 3/4"
M8 Lead Wire Dimensions

Details

Digital Flow Switch for Water Size 3/4"
Details

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author

Rudy Wiratama

rudywinoto.com/wmablog.com/flowmasonic.com

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