The TK3 oil level controller 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. TK3  oil level controller 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 or directly stop the compressor (through a separate power relay).
230 VAC / 2A alarm relay output  is suitable for direct connection in the security chain of the system
Its very compact dual-pitch fl ange-like design let the mounting more easy: the TK3 can be mounted as sight glass replacement directly onto 3 bolts or 4 bolts compressors giving the possibility to rack manufacturers to build more compact units.

If the compressor has a threaded instead of a flaged sight glass, adapter kits are available.

The sightglass is still available and it is on the same side of the LEDs in order to give the complete situation about the oil status in one eye-shot.

TK3 oil level controller 24 VAC - Technical Data of the Instrument

Click here to download a PDF technical datasheet of the TK3 Oil level controller 24 VAC (600 Kb)
Download a PDF with the TK3 Adapter addendum with left-right mounting possibilities (400 Kb)

Supply voltage - 24 VAC ± 10% @ 50Hz
Supply Current - 0,6A during normal operation (depending on the solenoid valve.). Each TK3 require 20VA
Electrical connection - 9.4mm Industry Standard Connectors / EN175301-803A Connector or spare wires
Output signal - Contact free relay output NO and NC
Relay outputs - Up to 230VAC @2A. The Normally Open (NO) alarm contact is closed when power is applied to the TK3
Housing material - Nickel plated steel
Enclosure protection class - IP 65
Media Temperature - from -40°C to +85°C
Ambient temperature - from -40°C to +60°C
Max working pressure - 46 bar (higher pressure limits available on different TK3 models)
MOPD - 26 bar (higher pressure limits available on different TK3 models)
Oil Return Line - 7/16 – 20 UNEF male
Cable Type - PVC cable CEI 20-22. Working temp.: -20 ÷ +70 °C (fixed laying)

TK3 oil level controller 230-115 VAC - Technical Data of the Instrument

Download a PDF technical datasheet of the TK3 Oil level controller 115-230 VAC (600 Kb)
Download a PDF with the TK3 Adapter addendum with left-right mounting possibilities (400 Kb)

Supply voltage - 230/115 VAC ± 10% @ 50/60Hz depending on model
Supply Current - 0,6A during normal operation (depending on the solenoid valve.). Each TK3 require 20VA
Electrical connection - 9.4mm Industry Standard Connectors / EN175301-803A Connector
Output signal - Contact free relay output NO and NC
Relay outputs - Up to 230VAC @2A. The Normally Open (NO) alarm contact is closed when power is applied to the TK3
Housing material - Nickel plated steel
Enclosure protection class - IP 65
Media Temperature - from -40°C to +85°C
Ambient temperature - from -40°C to +60°C
Max working pressure - 46 bar (higher pressure limits available on different TK3 models)
MOPD - 26 bar (higher pressure limits available on different TK3 models)
Oil Return Line - 7/16 – 20 UNEF male
Cable Type - PVC cable CEI 20-22. Working temp.: -20 ÷ +70 °C (fixed laying)