Load Cell Sensor - 3kg - Cover Expand

Load Cell Sensor - 3kg Parallel Beam



These 3kg Parallel Beam Load Cell Sensors are perfect for mounting below shelves and platforms to measure remaining stock, small parts and more.

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If you’ve ever stood on a scale and wandered how the device measures weight, and furthermore how it accurately measures the same weight consistently no matter how many times you weigh yourself, then be sure to read on about this fantastic little 3kg Load Cell Sensor, which is capable of measuring strain by carefully monitoring the internal resistance of bonded wires as they bend with the metal, which can then be identified as Newton force or weight depending on the application.

The design of these Parallel Beam Load Cell Sensors make them ideal for mounting below shelves, platforms and other raised surfaces, and should be mounted to a solid structure via the M5 mounting holes, with the measuring surface, whether it be a shelf or a platform, should be mounted to the M4 mounting holes. Then, when you place an object on the measuring surface, it ever-so-slightly bends the parallel beam, creating a sheer force that extends the measuring wires, which affects the internal resistance so as to present you with an estimated force measured in kg.

This load cell is designed to be used with our HX711 Load Cell Sensor Interface Module, and is often purchased alongside our IOT Devices for automated stocking systems.

Please Note: These 4-Wire Load Cells have been pre-calibrated during the manufacturing process. As such, it’s imperative that you never cut, shorten or otherwise modify the cables that are included, as this will affect the resistance of the sensor, resulting in inaccurate weight measurements.


3kg Parallel Beam Load Cell Sensor  -  Technical Specifications:

  • Load Cell Type

– Parallel Beam Strain Gauge                                             

  • Sensing Capacity

– 3kg

  • Wheatstone Bridge Structure

– Half-Bridge

  • Excitation Voltage

– 5V to 10V DC

  • Rated Output (mV per Input V)

– 1mV/V

  • Internal Bridge Resistor

– 1000Ω

  • No. of Cable Leads

– 4

  • Measuring Precision

– ±0.05%

  • Recommended Interfacing Module

– HX711 Load Cell ADC Amplifier

  • Housing Material

– Aluminium Alloy

  • Mounting Holes

– 2 x M5 | 2 x M4

  • Dimensions

– 12.7 x 12.7 x 80mm


3kg Load Cell Sensor / HX711 Module Wire Connections:

  • Red Wire

– E+                                 

  • Black Wire

– E-

  • Green Wire

– A+

  • White Wire

– A-


Typical Applications for these 3kg Parallel Beam Load Cell Sensors:

These light-capacity 3kg Load Cell Sensors utilise the parallel beam style to measure the bending of a metal between the M5 mounting holes and the M4 mounting holes. As such, these are ideally mounted on a wall or surface via the M5 mounting holes, with the platform, shelf or other measuring surface mounted on the M4 mounting holes. This way, once you zero the weight of the measuring surface, you can easily and quickly identify the weights of stock, small mechanical parts or almost anything else weighing up to 3kg.

With this in mind, we’ve found that these are light-capacity sensors are perfect for creating projects like automatic treat dispensers that activate when the pet stands on the platform. However, from experience we’ve found that it’s a good idea to also include a timer so your pet can’t continuously stand there and get fat, with the timer ensuring that your pet only gets a treat every few hours.


Load Cell - Beam Datasheet

General Parallel Beam Load Cell Datasheet

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Load Cell Sensor - 3kg Parallel Beam

Load Cell Sensor - 3kg Parallel Beam