The **WMS2-A2-R/K** is a specialized electronic component, typically classified as a **Precision Low-Profile Load Cell** or a **Weighing Module**. These devices are engineered for high-accuracy industrial weighing applications where space is limited and reliability is critical. --- ### 1. Key Technical Specifications The following table outlines the general electronic and physical characteristics often associated with this series: | Parameter | Typical Specification | | :--- | :--- | | **Component Type** | Single Point Load Cell / Weighing Module | | **Material** | Stainless Steel or High-Grade Aluminum | | **Output Sensitivity** | 2.0 mV/V ± 0.1% | | **Total Error** | ± 0.02% to 0.05% of Full Scale | | **Input Impedance** | 350 Ω - 410 Ω | | **Output Impedance** | 350 Ω ± 3 Ω | | **Excitation Voltage** | 5V - 12V (DC) | | **Ingress Protection** | IP65 or IP67 (Dust & Water resistant) | --- ### 2. Internal Electronic Architecture The WMS2-A2-R/K functions based on the **Wheatstone Bridge** principle. Inside the unit, several key electronic elements work in harmony: * **Strain Gauges:** These are the primary sensing elements. When a load is applied, the metal foil grid deforms, changing its electrical resistance. * **Compensation Resistors:** Used to stabilize the output against temperature fluctuations (Temperature Compensation). * **Bridge Circuit:** The four strain gauges are wired in a diamond pattern to convert the minute resistance changes into a measurable millivolt (mV) signal. ### 3. Wiring Configuration Standard units typically use a 4-wire color-coded system to interface with an Analog-to-Digital Converter (ADC) or a weighing indicator: ```json { "Red": "Excitation + (Input)", "Black": "Excitation - (Input)", "Green": "Signal + (Output)", "White": "Signal - (Output)", "Shield": "Ground/Earth" } ``` --- ### 4. Typical Applications Due to its "A2" (Low Profile) and "R/K" (often signifying specific mounting or cabling variations) designations, it is commonly found in: 1. **Bench Scales:** Compact weighing for labs or retail. 2. **Medical Equipment:** Monitoring patient weight in beds or chairs. 3. **Industrial Automation:** Force measurement in assembly lines. 4. **Packaging Machinery:** Precise filling and dosing systems.