Gravity: Analog Spear Tip pH Sensor

1. Getting Started

This guide covers the assembly of the spear tip shield and calibration of a pH probe, emphasizing accurate measurement techniques and the importance of using standard solutions and a stable power supply.

2. Example Code for Arduino-Measure pH of Semisolid Material

This tutorial will demonstrate how to use this spear tip pH probe to measure the pH value of semisolid material,such as soil and food. Users can learn how to set up the hardware, and measure different semisolid materials (like fruit, meat, and wet soil) using Arduino.

Reference

This article discusses the correlation between output voltage and pH values at 25°C, offering detailed operation and maintenance instructions for laboratory pH probes, ensuring proper use and longevity.

Parameter	Specification
Measuring Range	0~10pH
Accuracy	± 0.1pH
Operating Temperature	5~60 ℃
Response Time	≤2min(in standard buffer solution)
Salt Bridge Material	Poly Tetra Fluoro Ethylene (PTFE)
Shell Material	Polyoxymethylene (POM)
Filling Solution	Can NOT be Filled
Wiring Connector	BNC
Wire Length	850mm (BNC connector included)

Parameter	Specification
Input Power	5.00V
Ouput Signal	0 ~ 4.0V
Accuracy	< ±0.2pH (25 ℃)
Probe Connector	BNC
Module Connector	Gravity:PH2.0-3Pin
Dimension	43mm×32mm(1.69inch*1.26inch)

No.	Name	Description
1	A	Analog signal output (0~4.0V)
2	+	Positive power supply (5.0V)
3	-	Negative power supply (GND)
4	BNC	pH probe connector

Gravity: Analog Spear Tip pH Sensor

Specification

Pinout