TK4 80 bar Version

TK4: Oil Level Regulator with integrated connectivity capabilities


The TK4 is designed to control the oil level in the compressor crankcase in order to avoid the compressor to run without oil and so improve its lifetime. TK4 monitors the oil level with the embedded electro-optic sensor and comprises a solenoid valve for oil filling and a relay output contact to give an alarm. Key features of TK4 oil level controller
  • High reliability ensured by absence of mechanical moving parts
  • Sight glass and electronic LEDs can be checked on the same side where is more comfortable to do inspections
  • Well consolidated steel with fused glass technology with absence of seals ensures no leakage and good chemical compatibility
  • 24 VAC / 230 VAC power supply options
  • Easy maintenance of the coil of the valve and of the Electro-Optic sensor that can be easily replaced without emptying or depressurizing the plant
  • 230 VAC /2A alarm relay output suitable for direct connection in the security chain of the system
  • Adapters suitable for various types of compressors
  • Unit conform to directives 2014/30/UE and 2014/35/UE
Some advantages of this solution
  • Extremely compact dimensions
  • Left/Right mounting possibility with the same TK4
  • Reduction of the number of junctions in the circuit with less possibility of having leakages
  • Usage of less components (simplified circuit and easier warehouse management)
  • Simplified Installation (cost savings in terms of installation time)
  • Revolutionary connectivity capabilities

    Supply voltage:
    24 VAC ± 10% or 230 VAC ± 10% depending on model
    Supply current:
    Each TK4 requires 30VA (depending on the solenoid valve)
    Electrical connection:
    9.4mm Industry Standard Connectors / EN175301-803 Connector or spare wires
    Output type:
    Contact free relay output NO and NC
    Relay outputs:
    Up to 230VAC @2A
    Housing materials:
    Nickel plated steel + fused glass - PA glass fibre reinforced
    Enclosure protection class:
    IP 65
    Media Temperature:
    Ambient Temperature:
    Max working pressure:
    80 bar (higher pressure limits available on different TK4 models)
    60 bar (higher pressure limits available on different TK4 models)
    Oil Return Line:
    7/16 – 20 UNF male
    Cable Type:
    PVC cable CEI 20-22. Working temp.: -20 ÷ +70 °C (fixed laying)