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Month: February 2017

How to Correct an Erroneous Calibration for the LI-7700 Open Path Methane Analyzer

How to Correct an Erroneous Calibration for the LI-7700 Open Path Methane Analyzer

The LI-77000 analyzer provides the facility for users to calibrate using standard calibration gases. This option can be used to assure users that the instrument is performing according to specification. However, a mistake or an error in the calibration of the LI-7700 will result in incorrect zero (kz) and span (ks) multipliers. As a result, the computed methane density according to equation 6-12 of the LI-7700 Instruction Manual will be incorrect.

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