Level Sensor / Load Cell System

The Level Sensor / Load Cell System is an integrated measurement solution designed for use within RAP Storage Bins. It combines level sensing and load cell technologies to provide real-time monitoring of material quantity, ensuring accurate inventory management and preventing overfilling or underfilling conditions in industrial storage applications. The system is a component-level product intended for integration into storage bin assemblies, typically in machinery and equipment manufacturing settings.

The system operates by employing level sensors, which may be ultrasonic, radar, or capacitance-based, to detect the height of material within the bin. Simultaneously, load cells measure the weight of the material through strain gauge technology. Data from both sensors is integrated to provide comprehensive material quantity information, accounting for material density variations and ensuring accurate volume-to-weight conversions. This dual measurement approach enhances reliability and allows for cross-verification of readings.

Key parameters include a level measuring range of 0.5 to 10 meters, with a load measuring range of 0 to 5000 kg per load cell (multiple cells can be summed). Accuracy is ±0.5% FS for level and ±0.1% FS for load (Class C3 typical, per OIML R60). The output signal is 4-20 mA (HART available), with a supply voltage of 9-36 V DC. Operating temperature ranges from -40 to 85 °C for electronics, while process temperature can reach up to 150 °C with remote electronics. Operating pressure is 1.0 to 1.6 MPa, and ingress protection is IP65 to IP68 (per IEC 60529). Wetted parts are typically 316L stainless steel (per ASTM A240), with optional PTFE coating. Process connections are DN50 to DN100 (per DIN 2501), and the system weight ranges from 2.5 to 8 kg depending on configuration.

Materials used include stainless steel housing, strain gauge elements, electronic components, and protective coatings. The system is designed for industrial environments and requires proper calibration and installation. For specific model applications, it is essential to verify all parameters and standards with the legal manufacturer or supplier, as values may vary based on configuration and site conditions.

The system uses level sensors (ultrasonic, radar, or capacitance) to detect material height, while load cells measure weight via strain gauge technology. Data from both sensors is integrated to provide comprehensive material quantity information, accounting for density variations and ensuring accurate volume-to-weight conversions. This dual approach enhances reliability and allows cross-verification of readings.