YZC131 20kg Multi-Purpose Digital Scale – Kitchen, Jewelry & Portable Weighing Scale

Description

The YZC131 is a 20kg capacity straight-bar strain-gauge load cell designed for digital kitchen scales, jewelry scales, portable luggage scales, and small platform weighing applications . It is machined from aluminum alloy and uses a full Wheatstone bridge configuration with four color-coded lead wires, producing a differential output of approximately 1.0 mV/V at rated capacity .

When weight is applied to the free end of the bar, the internal strain gauges deform proportionally, changing resistance. This tiny signal must be amplified by an HX711 24-bit ADC before a microcontroller can read it . The sensor is compact (approximately 75–80 × 12.8 × 12.8 mm) and lightweight (around 28–30 g), making it suitable for space-constrained scale designs .

Critical limitations: This is a bare sensor, not a complete scale. It requires external signal conditioning (HX711), mechanical mounting, and calibration. The sensor must be mounted with one end fixed and the load applied to the free end in the direction indicated by the arrow on the label. Never press directly on the white silicone-covered area, as this can damage the strain gauges . Changing the sensor cable length may affect calibration accuracy .

Features

• 20kg Rated Capacity: Suitable for kitchen, jewelry, and portable scale applications .

• Full-Bridge Strain Gauge Design: Four-wire Wheatstone bridge for direct connection to HX711 ADC .

• Aluminum Alloy Construction: Durable straight-bar structure with M3.2 mounting holes .

• High Linearity: Nonlinearity of approximately ±0.03% to 0.05% F.S. .

• Standard Color-Coded Wiring: Red (E+), Black (E-), Green (S+), White (S-) .

• Compact Dimensions: Approximately 75–80 × 12.8 × 12.8 mm .

• IP65 Protection (some variants): Dust and water resistance per one supplier listing .

• Low Cost: Inexpensive sensor for DIY scale projects.

Technical Specifications