0-14 pH units
0-14 pH units
0.1 pH units
59.16 mV/pH unit
0C to 50C
2.5V to 5.5V DC
<5 mA
0-5V analog signal
<1 second
Glass or Plastic
12 mm x 16 mm x 30 mm (L x W x H)
Applications
Interface and Connectivity
The Analog pH Sensor Electrode with Amplifier Circuit provides an analog output signal that can be connected to a microcontroller or data acquisition system using a standard analog-to-digital converter (ADC) interface. The component can also be connected to a voltage regulator and power supply components to ensure stable operation.
Analog pH Sensor Electrode with Amplifier CircuitOverviewThe Analog pH Sensor Electrode with Amplifier Circuit is a highly accurate and sensitive sensor designed to measure the pH level of a solution. The sensor electrode is made of a specialized material that responds to changes in pH levels, while the amplifier circuit amplifies the weak signal from the electrode to produce a strong, stable output voltage.Technical SpecificationspH Range: 0-14
Accuracy: 0.1 pH
Sensitivity: 59.16 mV/pH at 25C
Output Voltage: 0-5V
Operating Temperature: 5-40C
Power Supply: 5V DCPinoutVCC: 5V power supply
GND: Ground
OUT: Analog output voltageCode Examples### Example 1: Arduino pH Level MeasurementIn this example, we'll use an Arduino Uno board to read the pH level of a solution using the Analog pH Sensor Electrode with Amplifier Circuit.```c++
const int pHPin = A0; // Analog input pin for pH sensorvoid setup() {
Serial.begin(9600);
}void loop() {
int sensorValue = analogRead(pHPin);
float voltage = sensorValue 5.0 / 1024.0;
float pH = 7 + (voltage - 2.5) / 0.059;
Serial.print("pH Level: ");
Serial.println(pH, 2);
delay(1000);
}
```This code reads the analog voltage from the pH sensor, converts it to a pH level, and prints it to the serial monitor.### Example 2: Raspberry Pi pH Logger with GraphingIn this example, we'll use a Raspberry Pi to read the pH level of a solution, log the data to a CSV file, and display a graph of the pH levels over time using the `matplotlib` library.```python
import RPi.GPIO as GPIO
import time
import csv
import matplotlib.pyplot as pltGPIO.setmode(GPIO.BCM)
pH_pin = 18def read_pH():
GPIO.setup(pH_pin, GPIO.IN)
voltage = GPIO.input(pH_pin) 5.0 / 1024.0
pH = 7 + (voltage - 2.5) / 0.059
return pHdef main():
with open('pH_log.csv', 'w', newline='') as csvfile:
writer = csv.writer(csvfile)
writer.writerow(['Time', 'pH Level'])
while True:
pH = read_pH()
writer.writerow([time.strftime("%Y-%m-%d %H:%M:%S"), pH])
time.sleep(60) # Log data every 1 minute
if time.time() - start_time > 3600: # Plot graph every 1 hour
breakplt.plot([row[0] for row in csv.reader(open('pH_log.csv', 'r'))],
[float(row[1]) for row in csv.reader(open('pH_log.csv', 'r'))])
plt.xlabel('Time')
plt.ylabel('pH Level')
plt.title('pH Level Over Time')
plt.show()if __name__ == '__main__':
start_time = time.time()
main()
```This code reads the pH level every minute, logs it to a CSV file, and plots a graph of the pH levels over time using `matplotlib`.### Example 3: ESP32 pH Monitoring with Wi-Fi
In this example, we'll use an ESP32 board to read the pH level of a solution, send the data to a remote server via Wi-Fi, and display the pH level on a web page.```c++
#include <WiFi.h>
#include <HTTPClient.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char serverUrl = "http://your_remote_server.com/pH_level";WiFiClient client;
HTTPClient http;void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
http.begin(client, serverUrl);
}void loop() {
int sensorValue = analogRead(32); // ESP32 analog input pin
float voltage = sensorValue 5.0 / 4096.0;
float pH = 7 + (voltage - 2.5) / 0.059;
http.addHeader("Content-Type", "application/x-www-form-urlencoded");
int httpResponseCode = http.POST("pH_level=" + String(pH));
http.end();
delay(60000); // Send data every 1 minute
}
```This code connects to a Wi-Fi network, reads the pH level, and sends the data to a remote server using the `HTTPClient` library. The pH level is displayed on a web page hosted on the remote server.Note: These code examples are for illustration purposes only and may require modifications to work with your specific setup. Ensure you have the necessary libraries and dependencies installed before running the code.