# Gravity: Liquid Flow Sensor (G3/4)

**Type:** Product page · **SKU:** SEN0551 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-liquid-flow-sensor-g34.html ([markdown](https://core-electronics.com.au/gravity-liquid-flow-sensor-g34.html.md))

This Gravity: electromagnetic-based liquid flow sensor can measure the flow of various liquids like water, diesel, engine oil, milk, paint, detergent, and...

## Pricing

- **Price:** $34.70 (inc GST) — $31.55 AUD, exc GST
- **Quantity discounts:** 6+ $29.96 (exc GST) · 12+ $28.71 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 3 today, and up to 55 more in 8–12 days.

## Description

This Gravity: liquid flow sensor is designed based on the electromagnetic principle. It adopts O-ring rubber seal and uses silicone sealant at the outlet end to strength water-resistance. With high anti-interference and anti-impact, the sensor offers reliable performance and long service life. Also, it is designed with G3/4 thread connectors for easy installation.

The sensor can be used with microcontrollers like [Arduino UNO](https://www.dfrobot.com/product-610.html) to measure the flow of liquids with high concentration and low viscosity like water, diesel, engine oil, milk, paint, detergent, honey, etc. (no impurity in liquid)

![Gravity: Water Flow Sensor (G3/4)](https://core-electronics.com.au/attachments/localcontent/1_516260db8c5.jpg)

###  Features

5. Gravity interface, easy to wire
6. Wide voltage of 3.5~24V
7. Measure the flow of the high-concentration but low-viscosity liquid
8. RoHS compliant
###  Applications

10. Measure the flow of liquids with high concentration and low viscosity
###  Specification

12. Operating Voltage: DC3.5~24V
13. Operating Current: =10mA (DC5V)
14. Output Mode: NPN pulse signal
15. Pipe Diameter: G3/4
16. Thread I.D.: 16mm
17. Thread O.D.: 26mm
18. Thread Length: 18.7mm
19. Water Pressure Resistance: =1.2MPA
20. Insulation Resistance: >100MO
21. Flow Range: 30-3000L/H
22. Error: ±1% (20-3000L/H)
23. Output Pulse High Level: >DC4.7V (input voltage DC5V)
24. Output Pulse Low Level:
25. Output Pulse Duty Ratio: 50%±10%
26. Flow & Pulse Correlation: 1L=75 pulses
27. Operating Temperature: =80°C
28. Operating Humidity: 35%~90%RH (No condensing)
29. Storage Temperature: -25°~+80°C
30. Storage Humidity: 25%~95%RH
31. Dimensions: 92\*47\*39mm/3.62\*1.85\*1.54"
###  Documents

33. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0551_Gravity_Water_Flow_Sensor_G3_4)
###  Parts List

35. Gravity: Liquid Flow Sensor (G3/4) × 1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0551-1.jpg)