ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 1500 |
| Delivery Time | 5-8 days |
| Packaging Details | Box pack |
| Power supply | DC 5V ± 0.5V |
| Working current | ≈ 15mA |
| Output | NPN open-circuit pulse |
| High level | ≈ VCC |
| Low level | ≈ 0V |
| Withstand voltage | ≤ 1.0 MPa |
| Medium temperature | 0 - 60℃ |
| Principle | Karman vortex street |
| Brand Name | YJJ |
| Model Number | AFD4020A31 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 1500 |
| Delivery Time | 5-8 days | Packaging Details | Box pack |
| Power supply | DC 5V ± 0.5V | Working current | ≈ 15mA |
| Output | NPN open-circuit pulse | High level | ≈ VCC |
| Low level | ≈ 0V | Withstand voltage | ≤ 1.0 MPa |
| Medium temperature | 0 - 60℃ | Principle | Karman vortex street |
| Brand Name | YJJ | Model Number | AFD4020A31 |
| Place of Origin | CHINA | ||
| High Light | Vortex liquid flow sensor for industrial cooling ，Water cooling flow sensor with warranty ，Laser equipment liquid flow meter | ||
Product Description:
YJJ AFD4020A31 2-16L/min Vortex Liquid Flow Sensor for Industrial Water Cooling / Laser Equipment
Features:
I. Core Parameters
Range specification (standard for AFD4020)
Liquid flow rate: 2 - 16 L/min (clear water / coolant), minimum startup flow rate 2 L/min
Interface thread: G3/8 (3 external threads), M8 electrical outlet
Model A31 definition
A: NPN pulse collector open-circuit output (standard pulse signal, 1L ≈ fixed pulse count)
31: No temperature measurement, no display, basic standard version (without needle valve)
Electrical parameters
Power supply: DC 5V ± 0.5V, working current ≈ 15mA
Output: NPN open-circuit pulse, high level ≈ VCC, low level ≈ 0V, can be directly connected to single-chip microcomputer IO
Pressure resistance: ≤ 1.0 MPa, medium temperature 0 - 60℃ clear water, anti-freezing liquid
Principle: Karman vortex street, internal no mechanical rotor, no wear, resistant to impurities and not prone to clogging
Accuracy: ± 3% FS, repeatability ± 1%, low pressure loss
II. Output Selection Supplement (same series available for selection)
PN: PNP pulse; V: 1 - 5V analog; mA: 4 - 20mA; 485: RS485 Modbus-RTU
III. Product Usage
1. Water purification / drinking water machine / coffee machine
Quantitative water output control, pure water machine flow measurement, coffee machine water output counting, water heater water flow monitoring
2. Industrial water cooling / laser equipment
Laser water cooling circulation flow detection, PCB water cooling machine flow break protection, industrial control water cooling water shortage alarm
3. New energy / energy storage
Energy storage PACK liquid cooling flow collection, charging station water cooling circuit flow statistics
4. Environmental protection / instruments
Laboratory small water machine, water quality analyzer, small dosing equipment quantitative water control
IV. Selection Distinction
AFD4020: 2 - 16 L/min (A31 this model)
AFD4040: 5 - 40 L/min
AFD4100: 10 - 100 L/min
Specifications:
| Liquid flow rate | 2 - 16 L/min |
| Minimum flow rate | 2 L/min |
| Interface thread | G3/8 |
| A | NPN pulse collector open-circuit output |
| 1L | ≈ Fixed pulse count |
| 31 | No temperature measurement |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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