Product Description
S402B Water Flow Sensor Digital Flow Meter Controller 0.5-6L min DC3.5-24V G1/4 for Oil Chemical Food Industry
S402B Water Flow Sensor Digital Flow Meter Controller 0.5-6L min DC3.5-24V G1/4 for Oil Chemical Food Industry1.NOTE
Default Configuration
Quantitative Controller + 1/4" PE Solenoid Valve + 1/4" PE Flow Meter
Quantitative Controller: DC 24V
1/4" PE Flow Meter: DC 5V, flow range 0.5–6 L/min
1/4" PE Solenoid Valve: DC 12V, normally closed
Reminder
Please select the correct pipe diameter and set the appropriate K-value to ensure accurate measurement.
Note
This product requires water pressure to operate. Working pressure range: 0.5–8 bar. It cannot be used in a pressureless environment.
2.Technical Parameters
Parameter | Specification |
Flow Meter Controller Voltage | DC 24V ±8V / 1A |
Solenoid Valve Voltage | DC 12V / 0.3A-0.5A (Normally Closed) |
Flow Sensor Voltage | DC 5V (Pulse Input) |
Flow Control Range | 0.1 - 9999 L/Gal |
Adjustable K-Value | Yes (1-9999 L/min or Gal/min) |
1/4" PE Flow Meter (YF-S402B)
Parameter | Specification |
Thread Size | G1/4" (1/4 inch) |
Pulse Characteristics | F = (38 × Q) ±2% |
Voltage Range | DC 3.5-24V |
Flow Rate | 0.5 - 6 L/min ±3% |
Max Load | ≤10mA (DC 5V) |
Temperature Range | -25°C ~ +80°C |
Humidity Range | 35% - 90% RH (No Frost) |
Max Pressure | ≤1.75 MPa |
Material | POM |
1/4" PE Solenoid Valve (ZJFPDJ-06)
Parameter | Specification |
Voltage Options | DC 12V / DC 24V / AC 220V |
Inner Diameter | 6.5mm |
Material | Nylon |
Connector Size | 1/4" PE |
Power | 5W |
Connection Type | Inlet 1/4", Outlet 1/4" |
Medium Temperature | 0 - 80°C |
Working Pressure | 0.02 - 0.8 MPa |
3. Features
High-Precision Measurement
Adjustable K-value provides accurate liquid and gas flow measurement for stable and reliable performance.
Easy Installation and Operation
Plug-and-play design with a simple and user-friendly interface for quick setup and convenient use.
Wide Industrial Applications
Suitable for petroleum, chemical processing, food and beverage production, and other industrial flow control systems.
Durable and Reliable
Manufactured with high-quality materials to ensure long-term durability and stable operation.
Customizable Display Panel
English display panel included as standard. Chinese display panel available upon request.
4.Applications
Petroleum Industry
Chemical Processing
Food and Beverage Industry
Water Treatment Systems
Industrial Flow Control Systems












5.FAQs
Does this flow meter require water pressure?
Yes. The system requires a working pressure range of 0.5–8 bar and cannot operate in a zero-pressure environment.
Can the K-value be adjusted for higher accuracy?
Yes. The K-value can be adjusted directly on the display for more precise calibration and accurate flow measurement.
Is the display available in English or Chinese?
The default display panel is in English. If you require a Chinese display panel, please leave a note with your order or contact customer service.
About Prime Living
Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.
We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.
Shipping policy
We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control.
We provide free shipping and dispatch all orders within 2 business days of payment, often sooner. All shipments are sent via international express air shipping, with a tracking number provided so you can follow your order every step of the way.
. Please provide a physical address, as we do not ship to P.O. Boxes.
Returns
Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.
Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.