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Oil Level Regulators

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Oil Level Regulators

The oil control optical level switches are designed for monitoring and controlling the oil level in compressor crankcase.
read more about oil level controllers

CO2 Refrigeration

CO2 Refrigeration

CO2 Refrigeration


Teklab devices are designed for use in level monitoring applications for the control of oil or liquid CO2 for transcritical or subcritical systems.
read more about Teklab solutions for CO2 refrigeration systems

Oil Level Infrared Sensors

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Oil Level Infrared Sensors


The metallic oil level switch has been designed for use in level monitoring applications for the control of oil for compressors or liquid CO2 in transcritical or sub critical applications.
read more about metallic oil level infrared sensors

K11 Level Switch. Metallic IR sensor

k11-level-switch-ir-sensorThe K11 family of level switches are suitable for high pressure applications like pressurized vessels, HVAC and refrigeration, motors etc. They have bodies made of stainless steel and sensor dome made of glass.
They are economical, dependable, and compact in size with overall dimensions of 59 x 27 mm and have no moving parts.

These level switches use infrared technology for their operation. They have an operating temperature range of -40 to 125 deg C.
There is a programmable timer inside these K11 level switches that allows a delay time to be set for delaying the output switching. The output modes are closed in presence of liquids and open in air or vice versa.
The AC / DC output current is up to 100mA depending on model.

The K11 level switches must not be installed close to any infrared sources.
The dome must be at least 50mm away from any reflective surface (for lower distances please directly contact us). These level switches have electronic protection against transient over voltage, and reverse polarity (for DC models). The K11 family of level switches have a detection accuracy of +/- 2 mm. They can withstand maximum pressure of 60 bars.
Click here to download a PDF short technical data sheet (113.39 Kb) Click here to download a PDF technical sheet of the K11 liquid level switch (670 Kb)

Technical Data of the Instrument

Operation mode : Detect liquid presence with contact
Repeatability : ± 2 mm
Body materials : Stainless Steel
Sensible dome : Glass
Electronic protections : Transient over voltage, reverse polarity (for DC models)
Max. temperature range : From –40ºC up to +125ºC
Storage temperature : From –40ºC up to +125ºC
Supply voltage : 10 – 28 VDC or 24 VAC ± 10% 50 or 60 Hz
Output type : AC output or NPN, NPN open collector, PNP for DC model
AC / DC Output current : up to 100 mA Max (depending on temperature range)
Output mode : Output Normally Open or Closed in the air
Delay times : Customizables depending on application needings
Max pressure : up to 60 bar (burst 120 bar)
Torque tighten : 15 Ntm

Electrical Connection

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Mechanical Dimensions

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Copyright 2008-2011 - Teklab S.r.l. - Via Emilia Ovest, 1179 - 41123 Modena - Italy - P.IVA 01976750362 - Company Register of Modena n. 01976750362 - Paid-in Capital Euro 10.000 i.v.