Pressure sensors (also known as strain gauges) are devices that convert mechanical energy into electrical energy. The process occurs by detecting the pressure force that is exerted on the surface. This force is then converted into an electrical signal (current or voltage). The value of the electrical signal is relatively proportional to the pressure force.
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Index: SEE-15554
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Pressure sensors
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HX711 - amplifier for tensometers
Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.6 V to 5.5 V, communicates via a two-wire bus: the data line and a...
Index: DNG-12479
Index: DNG-12479
Piezoelectric membrane with wires - 20mm - SparkFun SEN-10293
The piezoelectric elements are useful for detecting the vibration or knocking. You can use them in a simple way by reading the voltage at the output. It can also be used for...
Index: SPF-11152
Index: SPF-11152
Force sensor FSR-400 - 2kg round 5mm - Pololu 1695
The force sensor reduces its resistance when the force put to the round tip, accumulates. The sensor is round with a diameter of 5 mm.
Index: PLL-00752
Index: PLL-00752
Deflection sensor 73x6,3mm - SparkFun SEN-10264
During the bending, sensor increases its resistance. It can be used to detect hand movements, for example, crimping fists. Sensor length is 55 mm.
Index: SPF-01640
Index: SPF-01640
The conductive membrane for measuring the pressure of the force - Adafruit 1361
The membrane is made of a conductive material. The pressure, at any point, changes the resistance, which leads to the measurable change of the voltage in a simple way. The...
Index: ADA-05014
Index: ADA-05014
Tensometric beam NA27 5kg (50N)
Strain-gauge beam operating in the range of up to 5 kg (approx. 50 N). The smallest version is used, for example, in kitchen scales, portable scales. The connecting cable...
Index: SES-03099
Index: SES-03099
Force sensor FSR-406 - 2kg square 38mm - Pololu 1645
Force sensor changes its resistance when the force applied to the square tip, increases. The sensor in the form of a rectangle with side of 38 mm.
Index: PLL-01040
Index: PLL-01040
Tensometric beam NA27 10kg (100N)
Strain-gauge beam operating in the range of up to 10 kg (100 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
Index: SES-09074
Index: SES-09074
Strain Beam Module - with 24-bit ADC NAU7802 - STEMMA QT / Qwiic - Adafruit 4538
The Adafruit module is equipped with the NAU7802 chip, which enables reading data from strain gauge beams . Includes ultra high resolution 24 bit differential ADC with...
Index: ADA-21578
Index: ADA-21578
Force sensor round 5mm (0.25 '') - short connector - Pololu 2727
Pressure sensor reduces its resistance when the force put to the round tip, increases. The sensor with the short connector, round, with about 5 mm diameter.
Index: PLL-02349
Index: PLL-02349
Tensometric beam NA27 1kg (10N)
Strain-gauge beam operating in the range of up to 1 kg (approx. 10 N). The smallest version is used, for example, in kitchen scales, portable scales. The connecting cable has...
Index: SES-03097
Index: SES-03097
FlexiForce Pressure Sensor - 25lbs. (1" area) - SparkFun SEN-11207
Pressure sensor reduces its resistance when the force put to the round tip, increases. The round sensor with a diameter of 25.4 mm, the maximum pressure is 11 kg.
Index: SPF-10118
Index: SPF-10118
Tensometric beam NA1 8kg (80N)
Strain-gauge beam operating in the range of up to 8 kg (80 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
Index: DNG-12671
Index: DNG-12671
Tensometric beam YZC-1B(97) 40kg (400N)
Strain-gauge beam operating in the range of up to 40 kg (400 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
Index: SES-03098
Index: SES-03098
Qwiic Scale - NAU7802 module for tensometric beam - SparkFun SEN-15242
The module is based on a NAU7802 system enabling the reading of data from a strain-gauge beams. By connecting the model to the microcontroller, you can read the change in...
Index: SPF-14405
Index: SPF-14405
Stretch sensor - conductive rubber sheet - 200x200x1mm - Adafruit 5463
Tensile sensor in the form of a rubber sheet with dimensions of 200 x 200 x 1 mm. The principle of operation is very simple - the product increases its electrical resistance...
Index: ADA-21827
Index: ADA-21827
Tensometric beam NA1 10kg (100N)
Strain gauge beam allowing to measure loads up to 10 kg . It is perfect for places where measurement accuracy is an absolute priority. The tightness level of the beam is IP66...
Index: MAR-24196
Index: MAR-24196
Tensometric beam NA1 20kg (200N) - 0,5m
Strain gauge beam operating within the range up to 20 kg, (approx. 200 N). Used e.g. for kitchen scales, portable scales. The connection cable is terminated with terminals with...
Index: SES-03522
Index: SES-03522
HX711 - amplifier for a strainer beam - SparkFun SEN-13879
Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.7 V to 5.0 V, communicates via a two-wire bus: the data line and a...
Index: SPF-04283
Index: SPF-04283
Metal touch sensor module. The sensor detects the touch of the human body through a metal element. It has a digital and analog interface. Built-in potentiometer allows...
Index: OST-14277
Index: OST-14277
Force sensor round 15mm - short connector - Pololu 2728
Pressure sensor reduces its resistance when the force put to the round tip, increases. The s ensor with the short connector, round, with about 15mm diameter.
Index: PLL-02348
Index: PLL-02348
Load Sensor Combinator (Ver. 1.1) - SparkFun BOB-13878
The module allows you to connect 4 load sensors - strain-gauge beams to one of the bridge via 4-wire cable. It finds application, for example, in the construction of the...
Index: SPF-07277
Index: SPF-07277
MPR121 - Gator Breakout touch sensor - 12-channel - capacitive - STEMMA QT / Qwiic - Adafruit 4830
The Gator Breakout sensor allows to detect touch . It is equipped with the MPR121 chip. Made in capacitive technology, it provides the user with 12 channels , which allow...
Index: ADA-19005
Index: ADA-19005
Stretch sensor - conductive rubber sheet - 200x200x0,5mm - Adafruit 5464
Tensile sensor in the form of a rubber sheet with dimensions of 200 x 200 x 0.5 mm. The principle of operation is very simple - the product increases its electrical resistance...
Index: ADA-21826
Index: ADA-21826
See also
- Piezoelectric sensors
- RPM sensors
- Twilight sensors
- Tilt sensors
- Accelerometers
- Inductive sensors
- Hall effect sensors
- Oxygen sensors
- Optical sensors
- Resistance sensors
- Door sensors
- Alarm sensors
- 9DoF IMU sensors
- Pressure sensors
- Air quality sensors
- Sound sensors
- Gesture sensors
- Gas sensors
- Limit switches
- Sensors of light and color
- Magnetic sensors
- Medical sensors
- Sensors odbiciowe
- Distance sensors
- Inductive contactless sensors
- Weather sensors
- Liquid level sensors
- Current sensors
- Flow sensors
- Motion sensors
- Temperature sensors
- PT100 temperature probes
- Humidity sensors
- Fingerprint readers
- Encoders
- Photoresistors
- Phototransistors
- IR receivers
- Magnetometers
- Gyros
- Sensor sets
- Grove modules
- Gravity modules
Principle of operation of pressure sensors
The resistive pressure sensor (FSR) consists of two layers electrically insulated from each other. When a pressure force is applied to the outer layer in the form of a foil membrane, the insulating cover presses against the active layer, which is lined with electrically conductive measurement points. The greater the pressure force, the lower the contact resistance between the measurement points. The conductive layer is connected to a power source with auxiliary voltage, and the voltage signal, which reflects the applied pressure force, can be read, e.g. by Arduino, via an analog-to-digital converter and, based on the program algorithm, converted into the value of the weight exerted on the surface of the load cell. The measurement result can be displayed on the LCD display.
Important tips for installing strain gauges
Flat FSR sensors are made of very delicate material and great care is required when installing them. At the prototyping stage, it is easiest to connect such a sensor to the breadboard directly, or using crocodile clips or an ARK connector with screw terminals. However, if you want to solder the pressure sensor to the PCB, you must ensure that the soldering tip and the soldering surface are clean, because even within a few seconds the layers of the sensor may melt, causing permanent damage.
The compensating strain gauge is used to measure the pressure force taking into account the influence of external factors, primarily air humidity, temperature and atmospheric pressure.
The correct operation of the strain gauge sensor can be checked by supplying it with the appropriate voltage at nominal load and reading the output voltage value with an electric meter .
The resistance strain gauge uses the phenomenon of changing electrical resistance when changing the dimensions of the resistance material . Such devices are used, for example, to measure stress or pressure, for example in loading systems.
