ESMTS200 Miniature Steel Sheet Weighing Sensor From China

This is an E-type, mountain-shaped load cell. Its working principle is based on the strain effect and the Wheatstone bridge signal conversion mechanism, with the core function being to convert weight (a mechanical quantity) into a measurable electrical signal.

When the weight of an object is applied to the sensor, the internal metal elastic element (usually alloy steel) undergoes slight deformation (tension or compression). Strain gauges attached to the elastic element change simultaneously with the deformation, causing a change in resistance—resistance increases when stretched and decreases when compressed. This change in resistance is proportional to the applied weight and forms the basis for weight signal conversion.

Inside the sensor, there are usually two strain gauges forming a half-bridge circuit, with three lead wires: red, black, and white (or blue), where red is the central lead. Multiple sensors can be connected in series to form a full-bridge circuit, which can increase the measurement range and accuracy.

1. Symmetrical Double E-Shaped Elastomer: Features a unique symmetrical hollow E-shaped metal structure, with uniform force distribution, excellent linearity and repeatability, efficiently converting pressure into stable electrical signals.

2. Sealed Protective Design: The core strain gauge area is encapsulated with white adhesive, providing dust and moisture resistance, suitable for household or light industrial environments, extending service life.

3. Compact and Thin Size: The overall dimensions are small and thin, making it easy to embed in electronic scales, portable devices, and other space-constrained applications.

4. Differential Signal Output: Outputs millivolt-level differential signals via red and black wires, with strong anti-interference capability, and requires use with weighing AD modules such as the HX711.

5. High Accuracy and Stability: High sensitivity, low creep and hysteresis errors, good measurement consistency after long-term use, with mainstream ranges covering 10kg~50kg.

6. Resistance to Off-Center Load and Fatigue: Structural design effectively resists lateral force interference, and the metal elastomer has excellent fatigue resistance.

1. Household health devices: electronic body scales, smart body fat scales, baby scales.

2. Portable weighing tools: mini tabletop scales, handheld postal scales, luggage scales.

3. Small-scale force measurement scenarios: smart cabinet weight detection, smart home devices, small industrial force measurement devices.