Temperature Sensor 1M NTC Thermistor NTC100K 250 White

Features:

• NTC Thermistor-Based Measurement: Uses a 100K NTC thermistor for accurate temperature sensing based on resistance change.
• Waterproof Stainless Steel Probe: Designed for reliable operation in water, soil, and harsh environments.
• White Flexible Cable: Durable white insulated cable for clean installation and easy identification.
• Wide Temperature Range: Suitable for both low and high temperature monitoring applications.
• High Stability & Sensitivity: Provides stable and responsive temperature readings.
• Easy Integration: Compatible with Arduino, ESP32, Raspberry Pi, and other MCU platforms.
• Cost-Effective Solution: Ideal for industrial, DIY, and educational projects.

Principle of Work:

1. NTC Thermistor Behavior: The 100K NTC thermistor decreases resistance as temperature increases.
2. Voltage Divider Circuit: Works with a fixed 100K resistor to form a voltage divider.
3. Analog Signal Output: Temperature changes produce a corresponding analog voltage variation.
4. MCU Processing: Microcontroller reads ADC values and converts them into temperature using Beta or Steinhart–Hart equations.

Pinout & Connection:

This sensor uses a simple 2-wire configuration and can be directly integrated using a voltage divider circuit with a 100K resistor.

Code Example:

#define ntcPin A0
#define SERIES_RESISTOR 100000
#define NOMINAL_RESISTANCE 100000
#define NOMINAL_TEMP 25
#define BETA 3950
void setup() {
 Serial.begin(9600);
}
void loop() {
 int adcValue = analogRead(ntcPin);
 float resistance = SERIES_RESISTOR / ((1023.0 / adcValue) - 1);
 float temperature = resistance / NOMINAL_RESISTANCE;
 temperature = log(temperature);
 temperature /= BETA;
 temperature += 1.0 / (NOMINAL_TEMP + 273.15);
 temperature = 1.0 / temperature;
 temperature -= 273.15;
 Serial.print("Temperature: ");
 Serial.print(temperature);
 Serial.println(" °C");
 delay(2000);
}

Applications:

1. Industrial temperature monitoring systems
2. Water and liquid temperature measurement
3. HVAC and climate control systems
4. Smart home automation
5. Greenhouse and agriculture monitoring
6. IoT environmental sensing
7. 3D printer thermal control
8. Battery and power system protection

Technical Details:

• Type: NTC Thermistor Probe
• Resistance: 100KΩ @ 25°C
• B Value: 3950K
• Temperature Range: -20°C to 105°C
• Output: Analog
• Probe Material: Stainless steel waterproof housing
• Cable Color: White
• Accuracy: ±1°C (typical depending on calibration)

Resources:

• Datasheet
• Tutorial