The RP-C series sensors are made from ultra-thin flexible films combined with conductive mapressure-sensitivecale pressure-sensitive layers. The upper layer contains the pressure-sensitive conductive material, while the lower layer contains the conductive circuit traces. These layers are bonded together using adhesive film. When pressure is applied to the sensing surface, the conductive traces connect through the pressure sensitive layer. As the applied force increases, the resistance decreases. This allows the sensor to convert physical pressure into a measurable electrical signal.
Working Principle
The pressure sensor is made of two thin-film layers. The upper layer contains the pressure-sensitive conductive material, while the lower layer contains conductive traces. Under normal conditions, the resistance between the sensor terminals remains extremely high.
When pressure is applied to the sensing area, the pressure-sensitive material connects the conductive traces and forms a conductive path. As the applied pressure increases, the resistance decreases. This resistance change can be measured using a voltage divider circuit connected to a microcontroller analog input.
Features
- Circular thin film pressure sensor
- 18.3 mm sensing diameter
- Flexible structure with long connection leads
- High-sensitivity force detection
- Supports static and dynamic pressure measurement
- Fast response and activation time
- Ultra-thin and lightweight design
- Long operational lifespan
- Simple analog interface using resistance change
Specifications
- Model: RP-C18.3-LT
- Product SKU: SEN0295
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Area Diameter: 18.3 mm
- Thickness: 0.3 mm
- Trigger Force: 30 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 30 g to 1.5 kg
- Measurement Method: Static and Dynamic Pressure Measurement
- Initial Resistance: Greater than 10 MΩ
- Activation Time: Less than 0.01 seconds
- Response Time: Less than 10 ms
- Operating Temperature: -40 C to 85 C
- Lifespan: More than 1 million cycles
- Hysteresis: Approximately 10 percent at 1000 g force
- Drift: Less than 5 percent at 1 kg static load for 24 hours
Applications
- Pressure switches
- Bed monitoring and occupancy detection
- Smart footwear and wearable devices
- Medical monitoring systems
- Robotics and touch sensing
- Human machine interaction
- Force measurement systems
Basic Connection
The sensor behaves as a variable resistor. It is typically connected in a voltage divider configuration with a fixed resistor. The resulting voltage can be measured using the analog input of a microcontroller such as Arduino, ESP32, or other development boards to determine the applied pressure.
Sample Code
#define sensorPin A0
void setup() {
Serial.begin(115200);
}
void loop() {
int x = analogRead(sensorPin);
Serial.println(x);
delay(50);
}
Expected Results
When the sensor is pressed, the analog value shown on the serial monitor changes accordingly. The value decreases as the applied force increases. The sensor is typically used for qualitative pressure detection rather than precise calibrated measurements.
The RP-C series sensors are made from ultra-thin flexible films combined with conductive mapressure-sensitivecale pressure-sensitive layers. The upper layer contains the pressure-sensitive conductive material, while the lower layer contains the conductive circuit traces. These layers are bonded together using adhesive film. When pressure is applied to the sensing surface, the conductive traces connect through the pressure sensitive layer. As the applied force increases, the resistance decreases. This allows the sensor to convert physical pressure into a measurable electrical signal.
Working Principle
The pressure sensor is made of two thin-film layers. The upper layer contains the pressure-sensitive conductive material, while the lower layer contains conductive traces. Under normal conditions, the resistance between the sensor terminals remains extremely high.
When pressure is applied to the sensing area, the pressure-sensitive material connects the conductive traces and forms a conductive path. As the applied pressure increases, the resistance decreases. This resistance change can be measured using a voltage divider circuit connected to a microcontroller analog input.
Features
- Circular thin film pressure sensor
- 18.3 mm sensing diameter
- Flexible structure with long connection leads
- High-sensitivity force detection
- Supports static and dynamic pressure measurement
- Fast response and activation time
- Ultra-thin and lightweight design
- Long operational lifespan
- Simple analog interface using resistance change
Specifications
- Model: RP-C18.3-LT
- Product SKU: SEN0295
- Sensor Type: Thin Film Force Sensitive Pressure Sensor
- Sensing Area Diameter: 18.3 mm
- Thickness: 0.3 mm
- Trigger Force: 30 g (trigger when resistance less than 200 kΩ)
- Pressure Measurement Range: 30 g to 1.5 kg
- Measurement Method: Static and Dynamic Pressure Measurement
- Initial Resistance: Greater than 10 MΩ
- Activation Time: Less than 0.01 seconds
- Response Time: Less than 10 ms
- Operating Temperature: -40 C to 85 C
- Lifespan: More than 1 million cycles
- Hysteresis: Approximately 10 percent at 1000 g force
- Drift: Less than 5 percent at 1 kg static load for 24 hours
Applications
- Pressure switches
- Bed monitoring and occupancy detection
- Smart footwear and wearable devices
- Medical monitoring systems
- Robotics and touch sensing
- Human machine interaction
- Force measurement systems
Basic Connection
The sensor behaves as a variable resistor. It is typically connected in a voltage divider configuration with a fixed resistor. The resulting voltage can be measured using the analog input of a microcontroller such as Arduino, ESP32, or other development boards to determine the applied pressure.
Sample Code
#define sensorPin A0
void setup() {
Serial.begin(115200);
}
void loop() {
int x = analogRead(sensorPin);
Serial.println(x);
delay(50);
}
Expected Results
When the sensor is pressed, the analog value shown on the serial monitor changes accordingly. The value decreases as the applied force increases. The sensor is typically used for qualitative pressure detection rather than precise calibrated measurements.