Product Overview
Chongqing Chuanyi RSBXSSFAD030TN Rotary Paddle Level Switch
RSBXSSFAD030TN
The RS Series Rotary Paddle Level Switch is a highly reliable mechanical point-level detection sensor specifically designed for bulk solids, powders, and granular materials in harsh industrial environments. Featuring a robust bearing support structure, unique anti-dust shaft sealing design, adjustable torque sensitivity, and automatic clutch overload protection, it ensures continuous and maintenance-free operation across diverse bulk material processing industries. With IP65 housing protection, high-temperature resistance options up to 400°C, and SIL2 / Explosion-Proof certifications (Ex db / Ex tb), the RS Series delivers precise high, mid, or low-level detection for storage silos, hoppers, and processing vessels.
The RS Series Rotary Paddle Level Switch provides a dependable, field-proven mechanical solution for point level monitoring of dry bulk powders, pellets, and granular solids across a wide range of industrial storage and conveying applications. Operating on a simple yet effective synchronous motor mechanism, the sensor housing drives a measuring paddle that rotates continuously at a steady speed. When bulk material rises to reach the paddle, rotation is obstructed, generating a mechanical reaction torque that triggers an internal switch signal to stop the motor, alert operators, or control feed systems. Once the material drops clear of the paddle, a precision tension spring pulls the mechanism back to its starting state, automatically restarting paddle rotation and restoring normal operational status. Designed to overcome the common failure modes of traditional level switches, the RS Series incorporates advanced protective engineering. A dedicated internal clutch mechanism slips automatically whenever the paddle experiences heavy impact or extreme lateral mechanical stress, completely isolating and shielding the drive motor from damage. The enclosure features an exclusive multi-stage sealing design that effectively blocks fine dust and abrasive particles from migrating along the rotating shaft into the internal instrument housing, extending device operational life in challenging environments. Furthermore, adjustable tension spring settings allow operators to easily fine-tune sensitivity according to material bulk density, guaranteeing accurate detection from lightweight fly ash and plastic granules to high-density metallic ores. Maintenance and inspection are simplified through modular construction, enabling quick access to internal components without dismantling the entire instrument body from the process container.
FAQ
Q: What is the main operating principle of the RS Series Rotary Paddle Level Switch? A: The switch utilizes a low-speed synchronous motor that drives a rotating paddle via a gear shaft. When target bulk material covers the paddle, paddle rotation is stopped, generating mechanical resistance. This resistance activates an internal microswitch to output a contact signal and cut power to the motor. When material levels drop and free the paddle, an internal spring pulls the switch mechanism back to its initial state, automatically restoring motor drive and paddle rotation.
Q: How do I adjust the sensitivity for lightweight bulk powders or heavy minerals? A: Sensitivity is easily adjusted by modifying the tension setting of the internal spring. For materials with high bulk density (e.g., metallic ores or heavy sand), increase the spring tension. For low-density or lightweight materials (e.g., light ash or foam particles), decrease the spring tension to ensure reliable switch triggering.
Q: What protective features prevent drive motor damage from heavy material impact? A: The RS Series is equipped with an integrated mechanical clutch overload mechanism. When severe material impact or heavy lateral stress acts on the paddle assembly, the clutch slips automatically, effectively preventing mechanical shock from transferring to the internal drive motor and gearbox components.
Q: Can the RS Series level switch be installed in high-temperature or explosive environments? A: Yes, the RS Series offers extended high-temperature cooling neck options designed for process temperatures up to 400°C. Additionally, it holds SIL2 safety certification and dual explosion-proof certifications for both flammable gas environments (Ex db IIC T1…T4 Gb) and combustible dust atmospheres (Ex tb IIIC T135°C…T450°C Db).
Technical Specifications
| Power Supply | 24V DC (Output ripple < 100mVp-p) / 220V AC (50/60Hz) |
|---|---|
| Power Consumption | ≤ 4W |
| Output Signal | SPDT (Single Pole Double Throw) |
| Relay Contact Rating | 5A / 250V AC |
| Paddle Rotation Speed | 1 RPM |
| Alarm Torque | 1.0 kgf·cm |
| Applicable Material Density | ≥ 0.5 g/cm³ |
| Process Temperature | -40°C to 400°C (Standard: -40~80°C, Medium Temp: -40~200°C, High Temp: -40~400°C) |
| Ambient Temperature | -40°C to 80°C |
| Process Pressure | Atmospheric Pressure |
| Insulation Resistance | ≥ 50 MΩ |
| Enclosure Protection | IP65 |
| Certifications & Safety | SIL2; Gas Ex: Ex db IIC T1...T4 Gb; Dust Ex: Ex tb IIIC T135°C...T450°C Db |
Product documents
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