Gravity: Analog pH Sensor/Meter Kit V2

Rating:
100% of 100
SKU: SEN0161-V2 Brand: DFRobot
DFRobot Gravity: Analog pH meter V2 is specifically designed to measure the pH of the solution and reflect the acidity or alkalinity. It is commonly used in various...
$66.85 AUD, inc GST
$60.77 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 15th of Oct

Quantity Discounts:

  • 6-12 $58.95 (exc GST)
  • 12+ $57.74 (exc GST)
- +

2 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

Shipping:

  • $7+ Standard (5+ days*, tracked)
  • $11+ Express (2+ days*, tracked)
  • FREE Pickup (Newcastle only - must order online*)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

DFRobot Gravity: Analog pH meter V2 is specifically designed to measure the pH of the solution and reflect the acidity or alkalinity. DFRobot ph sensor is commonly used in various applications such asaquaponics, aquaculture, and environmental water testing.

As an upgraded version of pH meter V1, this product greatly improves the precision and user experience. The onboard voltage regulator chipsupports the wide voltage supply of 3.3~5.5V, which is compatible with the 5V and 3.3V main control boards. The output signal filtered by hardware has low jitter. The software library adopts the two-point calibration method,and can automatically identify two standard buffer solutions (4.0 and 7.0), so simple and convenient. You may also check Liquid Sensor Selection Guide to get better familiar with our liquid sensor series.

 


With this product, the main control board (such as Arduino), and the software library, you can quickly build the pH meter, plug, and play, with no welding.DFRobot provides a variety of water quality ph analog sensor products, uniform size, and interface, not only meeting the needs of various water quality testing but are also suitable for the DIY multi-parameter water quality tester.

The pH is a value that measures the acidity or alkalinity of the solution. It is also called the hydrogen ion concentration index. The pH is a scale of hydrogen ion activity in the solution. The pH has a wide range of uses in medicine,chemistry, and agriculture. Usually, the pH is a number between 0 to 14. Under the thermodynamic standard conditions, pH=7, which means the solution is neutral; pH<7, which means the solution is acidic; pH>7, which means thesolution is alkaline.

SEN0161-V2-Arduino Connection Diagram

 


   Attention:
1. The BNC connector and the signal conversion board must be kept dry and clean, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. If it is damp, it needs to be dried.
2. The signal conversion board cannot be directly placed on a wet or semiconductor surface, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. It is recommended to use the nylon pillar tofix the signal conversion board, and allow a certain distance between the signal conversion board and the surface.
3. The sensitive glass bubble in the head of the pH probe should avoid touching the hard material. Any damage or scratches will cause the electrode to fail.
4. After completing the measurement, disconnect the pH probe from the signal conversion board. The ph analog sensor probe should not be connected to the signal conversion board without the power supply for a long time.
5. The bottle cap of the probe contains protective liquid (3.3mol/L KCL). Even if the bottle cap is screwed tightly, some protective liquid may still leak around the bottle cap, forming white crystals. But as long as there is still protective liquid in the bottle cap, it will not affect the life and accuracy of the probe. So please use it with confidence. It is recommended that the white crystals be poured back into the protective liquid in the bottle cap.

Features

  • 3.3~5.5V wide voltage input (Note: changing power supplies may require recalibration of probe)
  • Hardware filtered output signal, low jitter
  • Gravity connector and BNC connector, plug and play
  • The software library supports two-point calibration and automatically identifies standard buffer solution
  • Uniform size and connector, convenient for the design of mechanical structures

Specification

Signal Conversion Board (Transmitter) V2
  • Supply Voltage: 3.3~5.5V
  • Output Voltage: 0~3.0V
  • Probe Connector: BNC
  • Signal Connector: PH2.0-3P
  • Measurement Accuracy: ±0.1@25°C
  • Dimension: 42mm*32mm/1.66*1.26in
pH Probe
  • Probe Type: Laboratory Grade
  • Detection Range: 0~14
  • Temperature Range: 5~60°C
  • Zero Point: 7±0.5
  • Response Time: <2min
  • Internal Resistance: <250MΩ
  • Probe Life: >0.5 years (depending on the frequency of use)
  • Cable Length: 100cm

Projects

Project 1. Calibrating an Analog pH Sensor (with Linear Algebra)

This video is an overview and tutorial for an analog pH sensor that's compatible with both Arduino and Raspberry Pi. It will also give a general overview of linear functions and interpolation.Plus it will show you how to write a custom code to use this sensor on an unsupported platform (Espruino).

 

Project 2. How to use DFRobot pH Meter module with an ESP32

 

Project 3. How to measure and indicate the pH of liquids with Arduino and LCD

This video will show how to measure the pH of common liquids in our home in an easy and comfortable way perfect for monitoring the pH of fish, chemicals, etc.

 

Project 4. pH Sensor: Assembling, Coding, & Calibrating with Arduino | Smart Gardening

This video talks about what pH sensors are, why use them for aquaponics system, and how to assemble, code, and calibrate the Gravity: Analog pH Sensor (Version 2).

 

Project 5. How to use pH meter V2 in ESP32 with new calibration

This tutorial will teach you how to program with esp32 and how to do calibration with arduino IDE, how to use ph meter v2 in esp32 with new calibration.

Documents

Parts List

  • pH Probe(Laboratory Grade)  x1
  • pH Signal Conversion Board x1
  • Gravity Analog Sensor Cable x1
  • pH Standard Buffer Solution 4.0 x2
  • pH Standard Buffer Solution 7.0 x2
  • Waterproof Gasket x2
  • Screw Cap for BNC Connector x1
  • M3 * 10 nylon pillar x4
  • M3 * 5 screws x8

This product is listed in:

Sensors>Kits
Sensors>Liquid & Flow
Sensors>pH

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $7+ for Standard Post (typically 6+ business days, tracked)
  • $11+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $12+ for Pack and Track (3+ days, tracked)
  • $16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!

Write Your Own Review

Videos

View All

Guides

Micro:bit Soil Moisture Sensor

The Micro:bit is great for small portable projects like a soil moisture sensor. In this tutorial, we...
The Micro:bit is great for small portable projects like a soil moisture sensor. In this tutorial, we...

The Maker Revolution

The Maker Revolution celebrates the creation of new devices and the modification of existing ones - ...
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - ...

Getting Hands-on with Sensors

What good is a robot if it can’t interact with the environment around it? Sensors are the back...
What good is a robot if it can’t interact with the environment around it? Sensors are the back...

Projects

WhyzaGC - Feather ESP32 addon to the MightyOhm Gieger Counter

This project is about adding a wireless Adafruit Feather HUZZAH ESP8266 or ESP32 v2 with Adafruit F...
This project is about adding a wireless Adafruit Feather HUZZAH ESP8266 or ESP32 v2 with Adafruit F...

Water Tank Level Sensor

Update: Community member Chris has had a go at remaking this project after the original project co...
Update: Community member Chris has had a go at remaking this project after the original project co...
Feedback

Please continue if you would like to leave feedback for any of these topics:

  • Website features/issues
  • Content errors/improvements
  • Missing products/categories
  • Product assignments to categories
  • Search results relevance

For all other inquiries (orders status, stock levels, etc), please contact our support team for quick assistance.

Note: click continue and a draft email will be opened to edit. If you don't have an email client on your device, then send a message via the chat icon on the bottom left of our website.

Makers love reviews as much as you do, please follow this link to review the products you have purchased.