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 |
| 4040 | Measurement range 5 - 40 L/min |
| A31 | NPN open-circuit pulse output |
| Thread | G3/8 external thread |
| Outlet | M8 waterproof plug |
| Accuracy | ±3% FS |
| Repeatability | < 2% FS |
| Power supply | DC5V |
| Operating current | ≈ 16mA |
| Brand Name | YJJ |
| Model Number | AFD4040A31 |
| 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 |
| 4040 | Measurement range 5 - 40 L/min | A31 | NPN open-circuit pulse output |
| Thread | G3/8 external thread | Outlet | M8 waterproof plug |
| Accuracy | ±3% FS | Repeatability | < 2% FS |
| Power supply | DC5V | Operating current | ≈ 16mA |
| Brand Name | YJJ | Model Number | AFD4040A31 |
| Place of Origin | CHINA | ||
| High Light | Vortex liquid flowmeter for water cooling ，Industrial water cooling flow sensor ，Medical air flow meter with warranty | ||
Product Description:
YJJ AFD4040A31 5-40L/min Vortex Liquid Flowmeter for Industrial Water Cooling
Features:
I. Model Interpretation
4040: Measurement range 5 - 40 L/min
A31: NPN collector open-circuit pulse output, no temperature measurement, no display screen, basic needle valve model
Thread: G3/8 external thread (3 teeth), outlet M8 waterproof plug
II. Core Electrical & Measurement Range Parameters
Flow range: 5 - 40 L/min, minimum startup flow 5 L/min
Accuracy: ±3% FS; repeatability < 2% FS
Power supply: DC5V, working current ≈ 16mA
Output: NPN open-circuit pulse, fixed pulse equivalent (1 L = fixed pulse), 3.3V level, direct connection to single-chip microcomputer IO for collection
Pressure resistance: rated 1.0 MPa, short-term pressure resistance 1.6 MPa
Temperature: ambient -10 to +65℃; medium -20 to +100℃ (clear water / anti-freezing fluid / coolant)
Contact material: POM housing + 304 stainless steel diffuser column, resistant to minor impurities, no impeller to prevent pipe blockage (Karman vortex principle)
III. Series Differentiation of the Same Model
AFD4020A31: 2 - 16 L/min (low flow)
AFD4040A31: 5 - 40 L/min (medium flow)
AFD4100A31: 10 - 100 L/min (high flow)
IV. Applicable Applications
1. Industrial water cooling (main force)
Laser machines, UV equipment, PCB cooling water machine, main shaft water cooling flow protection, flow monitoring, water shortage shutdown alarm
2. New energy
Energy storage PACK liquid cooling, charging station liquid cooling circuit flow measurement, water cooling heat dissipation monitoring
3. Water purification / equipment automation
Commercial pure water machines, large coffee machines, industrial cleaning machines quantitative water control, cumulative water output statistics
4. Instruments & Chemicals
Laboratory circulating water, small dosing machine, cooling liquid circulation flow collection
Specifications:
| Liquid flow rate | 5～40L/min |
| Minimum flow rate | 5L/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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