Help and Documentation

Welcome to help and documentation for the LI-190R, LI-191R, LI-200R, and LI-210R terrestrial radiation sensors and the LI-192 and LI-193 underwater radiation sensors.

Top Resources

Principles of Radiation Measurement


Brochure describing the fundamental principles of light and radiation measurements using light sensors.

Underwater Sensor Cable Connections


Technical tip that describes proper cable connections for LI-192 and LI-193 Underwater Quantum and Spherical Quantum Sensors.

Terrestrial Quantum Sensors Instruction Manual


Instruction manual for the LI-190R Quantum Sensor and LI-191R Line Quantum Sensor.

Underwater Radiation Sensors Instruction Manual


Instruction manual for the LI-192 and LI-193 Underwater Radiation Sensors

LI-COR Terrestrial Radiation Sensors Instruction Manual


For older sensors. Instruction manual for LI-COR light sensors, including the LI-190, LI-191, LI-200, and LI-210.


Factory Service and Recalibration

What's Included with Factory Calibration?

To request factory service or recalibration for a LI-COR instrument: Request Factory Service or Recalibration

Service will be performed at our US office in Lincoln, NE USA, European office (LI-COR Biosciences - GmbH), or by a distributor. To locate your country and designated point of contact click here.

Looking for a Calibration Certificate?