The Importance of Factory Calibration

Factory calibration is an integral step in the manufacture and repair of many LI-COR instruments. The characteristics of optical and other components change with time and may be affected by environmental conditions. Data of a critical nature may require more frequent calibrations than those suggested, as well as calibrating under conditions of actual use (e.g., same temperature). Many instruments also require user calibration to compensate for daily, or more frequent, changes in barometric pressure and/or temperature. A more extensive factory recalibration is recommended for many instruments; the recommended frequency, and what is included with the factory recalibration for each instrument can be found by selecting your instrument from light sensors, gas analyzers, photosynthesis systems, soil gas flux systems, and sensors below.

To request factory service or recalibration for an instrument:

Service will be performed at our US office in Lincoln, NE USA, European office (LI-COR GmbH), or by your local distributor.

Light Sensor Factory Calibration

Due to normal variation in internal optical components, it is necessary to characterize each sensor by measuring its output based on a standardized source. For LI-COR light sensors, calibration data is supplied as a 'calibration constant' that indicates the amount of sensor output for a given amount of measurable energy.

LI-190R and LI-191R

LI-190R & LI-191R
LI-192 and LI-193

LI-192 & LI-193
LI-200R

LI-200R
LI-210R

LI-210R

Gas Analyzer Factory Recalibration

The factory calibration of LI-COR gas analyzers characterizes the relationship between the light absorptance and actual gas concentrations for each analyzer. This involves making a series of automated measurements with traceable reference gas concentrations. Measurements are done in controlled conditions at a range of temperatures to verify performance and (depending on the analyzer model) characterize any temperature correction parameters. For dual species analyzers, any cross-sensitivity correction parameters required for that particular model are generated during the factory calibration.

Following the factory calibration, the calibration data are analyzed, and calibration coefficients are generated and loaded into the analyzer. This is followed by an automated user calibration (analyzer zero and span), then a final, independent data set is collected to verify that the analyzer meets all accuracy and cross sensitivity specifications. Each analyzer is shipped with a copy of its calibration certificate. The calibration and final check data and analyses are available upon request.

LI-7500A/RS

LI-7500A/RS
LI-7500DS

LI-7500DS
LI-7200/RS

LI-7200/RS
LI-7700

LI-7700
LI-830 and LI-850

LI-830 & LI-850
LI-7810, LI-7815, and LI-7820 Trace Gas Analyzers

LI-7810, LI-7815, & LI-7820
LI-610

LI-610
LI-7000

LI-7000
LI-840A

LI-840A
LI-820

LI-820

Photosynthesis System Factory Recalibration

The factory calibration of LI-COR photosynthesis systems includes recalibration of the gas analyzers, flow meters, light sources, light sensors, and other sensors that may drift over time.

Following the factory calibration, the calibration data are analyzed, and calibration coefficients are generated and loaded into the system. This is followed by an automated zero and span adjustments. Then a final, independent data set is collected to verify that the analyzer meets all accuracy and cross sensitivity specifications. Each analyzer is shipped with a copy of its calibration certificate. The calibration and final check data and analyses are available upon request.

LI-6800

LI-6800
LI-600 and LI-600N

LI-600 & LI-600N
LI-6400XT

LI-6400/XT

Soil Gas Flux Systems Factory Recalibration

The factory calibration of LI-COR soil gas flux systems may include calibration of a gas analyzer (LI-8100A and LI-870) and the adjustments to measurements provided by flow meters, temperature sensors, and circuits. Trace gas analyzers are calibrated independently of soil gas flux systems.

Following the factory calibration, the calibration data are analyzed, and calibration coefficients are generated and loaded into the analyzer. This is followed by an automated user calibration (analyzer zero and span), then a final, independent data set is collected to verify that the analyzer meets all accuracy and cross sensitivity specifications. Each analyzer is shipped with a copy of its calibration certificate. The calibration and final check data and analyses are available upon request.

LI-8250

LI-8250
Smart Chamber

Smart Chamber
LI-870

LI-870
LI-8100/A

LI-8100A

Sensors and Sensor Systems

Factory calibration is available for other sensors and sensor systems, including the LI-710 Evapotranspiration Sensor, LI-550 TriSonica Mini, and LI-560 TriSonica Sphere.

LI-710

LI-710
LI-550

LI-550
LI-560

LI-560