> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Gravity: Liquid Flow Sensor (G1/4)

**Type:** Product page · **SKU:** SEN0549 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-liquid-flow-sensor-g14.html ([markdown](https://core-electronics.com.au/gravity-liquid-flow-sensor-g14.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:** $33.50 (inc GST) — $30.45 AUD, exc GST
- **Quantity discounts:** 6+ $28.93 (exc GST) · 12+ $27.71 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0549:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0549:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This Gravity: liquid flow sensor is designed based on the electromagnetic principle. It adopts an 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 G1/4 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 (G1/4)](https://core-electronics.com.au/attachments/localcontent/1_50520edea5b.jpg)

### Features

- Gravity connector, easy to wire
- Wide voltage of 3.5-24V
- Supports measuring liquid with high concentration and low-viscosity
- RHOS compliant
 
### Applications

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

- Operating Voltage: DC3.5-24V
- Operating Current: =10mA(DC5V)
- Output: NPN Pulse signal
- Pipe Diameter: G1/4
- Thread Outer Diameter: 13mm
- Thread Length: 10mm
- Water Pressure Resistance: =1.0MPA
- Insulation Resistance: >100MO
- Error: ±1%(0.3-5L/min)
- Output Pulse High Level: >DC4.7V(Input voltage DC5V)
- Output Pulse Low Level: <DC0.5V(Input voltage DC5V)
- Output Pulse Duty Ratio: 50%±10%
- Flow-Pulse Correlation: 1L=540 pulses
- Operating Temperature Range: -10°~70°C
- Operating Humidity Range: 35%~90%RH(No condensing)
- Storage Temperature: -25°~+80°C
- Storage Humidity: 25%~95%RH
- Dimension: 80\*47\*30mm/3.15\*1.85\*1.18”
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/SKU_SEN0549_Gravity_Water_Flow_Sensor_G1_4)
 
### Parts List

- Gravity: Liquid Flow Sensor (G1/4) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0549-1.jpg)