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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Pressure sensors
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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
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
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
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
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
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
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
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
Mini Scales Unit - Pressure sensor up to 5kg - HX711 - expansion module Unit - M5Stack U177
Mini Scales Unit is an integrated miniature scale that combines a weighing sensor with a 5 kg range , an ADC acquisition system ( HX711 ) and a microprocessor for direct...
Index: MSS-24374
Index: MSS-24374
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
Force sensor FSR-402 - 2kg round 18mm - Pololu 1696
The pressure sensor reduces its resistance as the force applied to the round tip increases. Round sensor with a diameter of 18 mm.
Index: PLL-00753
Index: PLL-00753
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 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
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
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
Grove - ADC converter for HX711 load cell sensors - Seeedstudio 101020712
Arduino compatible 24-bit ADC converter module allows to read values from pressure sensors. It has built-in amplifier with optional 32 dB, 64 dB and 128 dB gain. On the board...
Index: SEE-15855
Index: SEE-15855
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
Tensometric beam NA27 3kg (30N)
Strain gauge beam operating within the range up to 3 kg , (approx. 30 N). The smallest version is used e.g. for kitchen scales, portable scales. The connection cable has...
Index: SES-03543
Index: SES-03543
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 2kg (20N)
Strain-gauge beam operating in the range of up to 2 kg (20 N approx.). It is applied, for example, for kitchen scales, portable scales. The connecting cable has tips with the...
Index: SES-03533
Index: SES-03533
Pressure sensor cell 50kg - 4pcs.
Pressure sensor reduces its resistance when the force put to the square tip, increases. The sensor is in the form of a rectangle with sides of 33 mm. The set has 4 pieces,...
Index: MOD-07267
Index: MOD-07267
OpenScale - strain-gauge bridge ATmega328P - SparkFun SEN-13261
Module for measuring the weight and temperature. It is used to read data from the strain-gauge sensors. It allows for calibration, setting the sampling frequency and accuracy....
Index: SPF-07276
Index: SPF-07276
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
FlexiForce Pressure Sensor - 100lbs - SparkFun SEN-08685
Pressure sensor reduces its resistance when the force put to its tip, increases. Sensor with a length of 216 mm, the maximum pressure is approx. 45 kg.
Index: SPF-10112
Index: SPF-10112
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See also
- Led motion detectors
- Optical sensors
- Twilight sensors
- Resistance sensors
- Door sensors
- Piezoelectric sensors
- RPM sensors
- Oxygen sensors
- Tilt sensors
- Accelerometers
- Inductive sensors
- Hall effect sensors
- Alarm sensors
- 9DoF IMU sensors
- Pressure sensors
- Air quality sensors
- Sound sensors
- Gesture sensors
- Limit switches
- Sensors of light and color
- Gas sensors
- 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.