This is a 20KG aluminumalloy straight bar load cell that converts mechanical force into a microvoltlevel electrical signal . It is a passive sensor designed to be connected to a separate amplifier like the HX711 for microcontroller integration.
| Parameter | Value |
|---|---|
| Capacity | 20kg (44 lbs) |
| Rated Output | 1.0±0.1mV/V or 2.0mV/V (varies by model) |
| Input Resistance | 402±6Ω typical |
| Output Resistance | 350±3Ω typical |
| Safe Overload | 150% of rated capacity |
| Ultimate Overload | 200% of rated capacity |
| Material | Aluminum Alloy |
| Wire Color | Function |
|---|---|
| Red | Excitation (+) |
| Black | Excitation (-) |
| Green | Signal (+) |
| White | Signal (-) |
Note: Some variants may use different color codes - always verify with datasheet .
+Aluminum Construction - Lightweight but durable for general use
+High Accuracy - C2 to C3 accuracy class options available
Wide Temperature Range Operates from 35°C to 80°C
+Compensated Output - Factory calibrated for linear response
√ Compatible with HX711 and other strain gauge amplifiers
√ Requires external signal conditioning
√ Available in various capacity options
The load cell's output is in millivolts per volt (mV/V) of excitation voltage . For example, at 10V excitation with a 2.0mV/V sensitivity, the fullscale output is only 20mV . This tiny signal requires a highresolution ADC (like the 24-bit HX711) to be readable by a microcontroller .
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