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Series ILT Level Indicators

Precise and Reliabile Level Indicators for Powdery and Granular Materials

ITL Rotating Level indicators are designed for level monitoring of bins, hoppers or silos by means of the rotating paddle. When the materal level reaches the measuring paddle the rotation is blocked. The motor is freely suspended within the casing. The resulting reaction torque activates a limit switch output single that stops the motor. As soon as the material level sinks below the paddle radius, a spring pulls the motor back into its operating position. The switch returns to the OFF position and the motor is switched on. The top or side-mounted indicators are commonly used for materials having a minimum bulk density of 0.3 t.m3 (0.01 lbs per cu in).



  • EnclosureL IP 66
  • Process connection: Thread g1 1/4″ , G1 1/2″ , G2 1/2″
  • Material process connection: Plastic and aluminium 
  • Materal shaft and measuring vane: stainless steel
  • Friction clutch: Protection of the gearing from impact of the measuring vane
  • Pickup delay: Approx 1.3 sec
  • Sensitivity: adjustable via reset force of spring in three positions
  • Speed of measuring vane: 1 r.p.m.


  • Mains voltage: 24/48V 50-60Hz or 115V / 230V, 50-60Hz or 24V DC (all voltages +10% / -15%)
  • Installed load: 3VA (3W)
  • Signal output: Floating micro-switch
  • Signal output: Floating micro-switch (AC max. 250V, 2 A, 500W – DC max. 300V, 2A, 60W)
  • Protection class : I


  • Container excess pressure: max. 0.8 bar
  • Temperature inside vessel: -4F ~176F (-4F/ 482F with high temperatre version)
  • Ambient temperature inside the casing: -4F ~158F


  • ATEX certified version available for us in hazardous classified areas
  • high or low process temperature options
  • various process connections (flange and thread)
  • easy installation
  • uninfluenced by material properties such as conductivity, dust, dielectricity
  • extremely reliable level measuring of bulk solids
  • different measuring paddle types, suitable for all densities
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Overall Dimensions


ILT dimensions for installation

Technical Data


Product Attributes


Level Monitoring & Silo Safety




Threaded mount couplings for Vessel attachment, Double Paddle for Ligh materials, external light, rotation control, shaft extension

General Applications

Typically ILT Rotary Level Indicators are fitted on the vertical walls of a bin, silo or hopper at the desired maximum or minimum level. Equipped with an extension rod, they can also be mounted vertically into the roof plate.

General Industries

Building & Construction, Feed & Food, Plastics & Chemicals, Heavy Industries, Plants & Machinery, Environmental Technology

Features & Benefits

  • Multivoltage design, All contact parts in stainless steel, High or low process temperature options, Various process connections, ATEX-certified, Easy to install, Cost-effective, Reliable level measurement of bulk solids, Different measuring paddle types, suitable for all densities


as long as material is present, the paddle of the ILT Bin Level Indicator does not rotate. As soon as the material level sinks below the paddle radius, rotation restarts activating other system components. The top or side-mounted indicators are commonly used for materials having a bulk density ranging between 0.5t/m³ (34 lb per cu ft) and 2t/m³ (138 lb per cu in).


Enclosure: IP66, Process Connection: 1-1/2" or 2-1/2" ISO 228, 304 S.S. Paddle, Die Cast Aluminum Enclosure IP66 with Electronic Board


"24 V – 48 V (AC), 50-60 Hz; 110 V – 230 V (AC), 50-60 Hz; 24 V (DC), Installed Load: 3VA (3W), Singnal Output: Floating Micro Switch"

Operating Condition

container excess pressure: 11 psi (0.8 bar) Max, Temperature Inside Vessel: -4F - 176F Standard, -4F - 482 F with High Temp Version, Ambient Temperature inside the casing: -4F - 168F

Product Industries

Product Applications