FineTek SEX Rotary Paddle Solid Level Switch

FineTek SE Series Rotary Paddle Solid Level Switch

Sometimes the simplest technology is the most dependable — the FineTek SE Series rotary paddle level switch has proven that for point-level detection of bulk solids in bins, silos, and hoppers for years. It mounts through the bin wall at whatever level position you need to monitor: high, intermediate, or low.

How It Works

With no material present, a synchronous motor keeps the paddle rotating at a steady 1 RPM. As soon as bulk material surrounds and impedes the paddle, the motor stalls and an internal micro switch changes state, signaling an alarm or triggering a control action. Once the material clears again, the paddle resumes turning and the output resets automatically.

Key Features

  • Simple, visible operating principle with a proven reliability record
  • Low-speed 1 RPM synchronous motor drive
  • Micro switch output for alarm or control duty
  • Mounting options for high, intermediate, and low level positions
  • Wide choice of paddle shapes to suit different bulk densities

Applications

  • High-level and overfill alarms in silos and bins
  • Low-level and empty detection
  • Conveyor and chute blockage detection

Industries Served

  • Cement, aggregates, and mining
  • Grain, feed, and food processing
  • Plastics and chemicals
  • Power and waste handling
ApplicationDetects presence/absence of solid or powdery material in tanks, bins, and containers
Detecting MaterialSolid/powdery bulk materials; minimum density ~0.5 g/cm³
Operating PrincipleSynchronous motor rotates paddle continuously; material resistance stalls rotation, triggering micro-switch via torque/spring mechanism
Paddle Rotation Speed1 RPM
MotorSynchronous motor with automatic shutdown on overload (adjustable torque)
Output Signal / Relay RatingSPDT contact; rated 5A @ 250VAC (some models 3A @ 250VAC)
Power SupplyAC 110V / 220V / 240V / 24V, DC 24V, 50/60Hz
Operating TemperatureStandard: -20°C to +70°C; Hi-temp models: up to +200°C
Protection RatingIP65 or IP67 (model-dependent)
Housing MaterialAluminum alloy (ADC-12)
Shaft/Paddle MaterialStainless steel (SUS304) standard
Process ConnectionPF thread (1/2″, 3/4″, 1″), NPT, ANSI, JIS, DIN, GB standards; flanges 1″-10″
CertificationATEX, IECEx, CSA, NEPSI (explosion-proof variants)

Download FineTek SEX Rotary Paddle Solid Level Switch information here

Datasheet: Finetek_SE-Rotary-Paddle-Level-Switch_B0
Manual:

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