40Kg Load Cell
40kg Load Cell Overview
A load cell is a transducer that converts a force (usually weight) into an electrical signal. The 40kg load cell is designed to measure weights up to 40kilograms with high precision, commonly used in electronic weighing scales, industrial measurement systems, and DIY projects.
Key Features
Capacity: 40kg maximum load
Type: Strain gauge load cell (commonly a single-point or S-type)
Output Signal: Typically 2mV/V 1% at full scale
Excitation Voltage: 510V DC
Material: Alloy steel or stainless steel (durable and corrosion-resistant)
Accuracy Class: 0.10.2% of full ing: Pre-drilled holes for screws; can be mounted on flat surfaces
Temperature Range: 10C to +40C (operating)
Applications: Scales, robotic force measurement, industrial automation, laboratory balances, and load testing
How It Works
Force Applied: When a weight is placed on the load cell, it exerts a force on the sensing element.
Strain Gauge Response: The internal strain gauge deforms slightly.
Electrical Signal Change: The deformation changes the resistance in the strain gauge, generating a tiny voltage variation.
Signal Amplification: An amplifier (like an HX711) converts this small signal into a readable digital value.
Technical Specifications (Typical)
Parametr | |
Maximum Load | 40kg |
Material | Alloy steel / stainless steel |
Rated Output | ~2mV/V |
Excitation Voltage | 510V DC |
Non-Linearity | 0.1% FS |
Hysteresis | 0.1% FS |
Operating Temp | 10C to +40C |
Storage Temp | 20C to +60C |
Connection | 4-wire or 6-wire (Red, Black, Green, White, optional Blue & Yellow for sense) |
Wire Color Code (4-Wire Typical)
Red: Excitation+ (VCC)
Black: Excitation (GND)
Green: Signal+ (Output+)
White: Signal (Output)
Compact and easy to integrate
Durable and suitable for repeated measurements
Compatible with microcontrollers via amplifier modules
Applications Examples
Electronic Weighing Machines kitchen scales, industrial scales
Robotics & Automation measuring applied force or pressure
Material Testing testing mechanical strength
DIY Projects smart scales, load-monitorin

