--- product_id: 165736114 title: "3/8\" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min (Pack of 2）" brand: "gredia" price: "SAR 80" currency: SAR in_stock: true reviews_count: 11 url: https://www.desertcart.com.sa/products/165736114-3-8-water-flow-sensor-food-grade-switch-hall-effect store_origin: SA region: Saudi Arabia --- # DC 5-24V wide voltage 0.3-10L/min flow range G3/8 inch male thread fit 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min (Pack of 2） **Brand:** gredia **Price:** SAR 80 **Availability:** ✅ In Stock ## Summary > 💧 Flow with confidence, measure with precision! ## Quick Answers - **What is this?** 3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min (Pack of 2） by gredia - **How much does it cost?** SAR 80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/165736114-3-8-water-flow-sensor-food-grade-switch-hall-effect) ## Best For - gredia enthusiasts ## Why This Product - Trusted gredia brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Food-Grade Safety:** Crafted from ROHS-compliant, food-safe plastic for pure applications - • **Leak-Proof Design:** Sealing ring ensures firm connection and zero water leakage - • **Dual Pack Advantage:** Two sensors included for scalable or backup use - • **Precision Flow Control:** Accurate ±3% measurement for flawless fluid management - • **Universal Compatibility:** Fits seamlessly with water heaters, coffee machines, purifiers & more ## Overview This 3/8" Water Flow Sensor features a hall effect switch with a flow range of 0.3-10L/min, operating at DC 5-24V and water pressure up to 0.8Mpa. Made from food-grade, ROHS-compliant plastic, it ensures safe and accurate fluid measurement for appliances like coffee machines, water purifiers, and beverage dispensers. The pack includes two sensors with secure G3/8" male thread fittings and leak-proof sealing rings for easy installation and reliable performance. ## Description Our products are fine made with nice materials and good workmanship, strict quality control, guarantee in after service. The flowmeter is light and handy, easy to install. The sealing ring make the connection firm, the sealing performance is good and the problem of water leakage is avoided. More details about the flow meter: F=(23*Q)±3%, Q=L/Min, error: ±3% Working range: 0.3-10L/min Working voltage: DC 5-24 V Water Pressure: ≤0.8Mpa Liquid temperature: 0-100℃ Maximum current consumption: 15 mA(DC 5V) Wire length: 15 cm Size: 54mm x 35mm x 28mm(L*W*H) Refer to the wiring: Red wire: VCC(+) Black wire: GND(-) Yellow wire: Signal output Package: 2 x G3/8 inch flowmeter male thread ## Features - Connect to G3/8 inch male thread, hall effect, comes with 2 pieces - Flow range:0.3-10L/min, Water Pressure: ≤0.8Mpa - Working voltage: DC 5-24 V, F=(23*Q)±3%, Q=L/Min - Material: food grade plastic, all raw materials conform to the ROHS test standard - Wide application: It is mainly used in water heater, coffee machine, water purifier, drinking fountain, beverage machine, campus smart card equipment, etc. ## Images ![3/8" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 0.3-10L/min (Pack of 2） - Image 1](https://m.media-amazon.com/images/I/31WkeFKqzsL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the K value for this sensor please?** A: The label on the sensor provides an "F" number that is the Hz for LITERS/minute; my search for a "K" value states that number is GALLONS/minute. A liter is VERY ROUGHLY a little less than a quart, so a K value should be roughly 4 (3.78541) times an F value. **Q: Is the output PWM or an analog output?** A: Hello, the output is PWM. **Q: would i be able to measure the flow through my drip irrigation with this? never measured but I'm guessing it might be less than .3l/min at times** A: I have three different models of Gredia's flowmeters and I found them to be inaccurate at low flow rates, I presume there is not enough force to spin the wheel ... F = ma. **Q: What is the output voltage on the yellow wire during .4 lpm flow if fed with 5VDC?** A: At 5vdc you should get >4.7vdc ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Quality *by A***O on Reviewed in the United States on March 6, 2024* Works perfect ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Easy to use - works well! *by M***R on Reviewed in the United States on October 22, 2020* I bought these for an experiment. They seem to work well so far. Just use the frequency to find the flow rate- awesome! ### ⭐⭐⭐⭐ 4.0 out of 5 stars Sourcing PLC Input to Read Pulses *by S***T on Reviewed in the United States on December 4, 2021* I ordered this to test measuring low flows from chemical dosing pumps. The sensor must be an NPN (sinking) transistor, as it would only work when wired to a sourcing PLC input on my Micro 850 PLC. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/165736114-3-8-water-flow-sensor-food-grade-switch-hall-effect](https://www.desertcart.com.sa/products/165736114-3-8-water-flow-sensor-food-grade-switch-hall-effect) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-04-22*