Product Description:

YJJ AFD2125W00 Water Flow Sensor for Gas-Fired Boiler & Instant Hot-Water-Heater Flow-Control

Features:

I. Basic Information
Model: AFD2 series (AFD2106/2110/2120/2125)
Brand: Guangzhou Aosair Electronics
Principle: Von Karman vortex street (vortex street type), measuring flow by detecting the frequency of fluid vortices, without moving parts, resistant to impurities, low pressure loss
Medium: Clear water, pure water, water heating medium (can add antifreeze)
II. Core Technical Parameters
1. Range selection (mainstream 4 types)
AFD2106: 0.5 - 10 L/min (DN10)
AFD2110: 1.8 - 32 L/min (DN15)
AFD2120: 5.0 - 85 L/min (DN20)
AFD2125: 9.0 - 150 L/min (DN25)
2. Accuracy
50% of the range or below: ±1% FS
50% of the range or above: ±2% reading, repeatability < 2%
3. Electrical and Output
Power supply: 11.4 - 26 VDC (wide voltage)
Output: 4 - 20 mA / 0 - 10 V analog signal, can be directly connected to PLC / microcontroller
Pressure resistance: 1.0 MPa (10 bar)
4. Environmental Conditions
Medium temperature: Clear water 0 - 90℃; with antifreeze - 20 - 90℃
Environmental temperature: -30 - +65℃
Humidity: 10% - 95% RH (no condensation)
5. Materials & Structure
Main body: PPS + GF (glass fiber reinforced plastic), resistant to water and corrosion
Interface: external threads (G1/2, G3/4, G1), easy installation
Features: no mechanical wear, anti-scaling, low pressure loss, long-term zero drift
III. Main Applications
1. Household and HVAC (core application)
Gas water heaters, wall-mounted boilers, heat pump water heaters: inlet water flow monitoring, start / constant temperature control
Central air conditioners, floor heating, heat recovery systems: closed-loop monitoring of water circulation flow, preventing evaporator icing, compressor failure
2. Medical equipment
Respirators, anesthesia machines, dialysis machines, medical pure water machines: precise measurement and control of liquid flow, ensuring stable operation of medical equipment
3. Industrial and OEM matching
Water purification equipment, pure water machines, cooling systems, small hydraulic waterway flow monitoring
Replacing imported HUBA flow sensors, high-performance domestic alternative solution with high cost-effectiveness
4. Laboratories and small water treatment
Laboratory waterways, small water treatment equipment flow collection, energy consumption measurement

Specifications: