ESMTS900 High Precision Micro Digital Weighing Scale sensor with 3KG 5kg 10kg
Working Principle
When an object is placed on a sensor, gravity causes the elastomer of the sensor to undergo slight elastic deformation. The strain gauges attached to the elastomer also deform accordingly, resulting in a change in their resistance. The strain gauges are usually connected in a Wheatstone bridge circuit, and the change in resistance causes the bridge to become unbalanced, thereby outputting a faint voltage signal proportional to the gravity applied. This signal is then processed through amplification, filtering, and A/D conversion, ultimately converting it into a display of the object's weight.
Product Features
1. High precision and good linearity: It is equipped with high-precision resistive strain gauges on the inside. When the steel plate undergoes slight deformation due to force, the resistance changes extremely sensitively and linearly, ensuring accurate weighing (typical accuracy can reach C3 level or even higher).
2. Excellent off-center load capacity (for single-point type): This is the most notable feature of steel single-point sensors. Even if the object is not placed in the center of the scale pan but towards the corner, the stress distribution design inside the sensor can automatically compensate for errors, ensuring consistent weighing results. This makes it very suitable for small countertop electronic scales.
3. Strong overload resistance: The steel has high yield strength, able to withstand large instantaneous impacts and overloads (usually allowing 150% of the rated load without damage, with a safety limit up to 300%), making it suitable for frequent and rough usage in a commercial environment.
4. Low creep and high stability: High-quality alloy steel is heat-treated and aged, so it recovers well after long-term loading, has minimal zero drift, and provides stable readings over long-term use.
5. Good protection performance: Modern steel plate sensors are usually laser-welded and sealed, with protection ratings of IP67 or IP68. They are moisture-proof, dust-proof, and can even be washed briefly with water, making them suitable for wet environments such as vegetable markets and kitchens.
Product detail
Technical Specifications
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ESMTS900 Kitchen scale sensor |
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Rated load |
3 , 5 , 10kg |
Operating temperature |
-10 ~ 50 ℃ |
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Sensitivity |
1.0 ± 0.2mv / v |
Zero output |
± 1.0mv / v |
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Zero temperature drift |
0.3% FS |
Non-linear |
0.3% FS |
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Temperature sensitivity drift |
0.3% FS |
Lag |
0.3% FS |
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Insulation resistance: |
≥2000MΩ |
Repeatability |
0.3% FS |
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Excitation voltage |
3-10vdc |
Creep |
0.3% FS |
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Safe overload |
120% FS |
Input resistance |
1000 ± 5% Ω |
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Output resistance |
1000 ± 5% Ω |
Comprehensive accuracy |
0.3% FS |













