Example: 2-point adjustment with zero point adjustment - MGP261 - MGP262

MGP260 User Guide

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When making a 2-point adjustment, the low end adjustment is carried out simultaneously for all measurement parameters by adjusting the zero point signal in the Zero point adjustment tab.

This means that, instead of carrying out a 2-point adjustment for each measurement parameter separately using a low end and a high end reference, the low end adjustment of all measurement parameters is replaced with the zero point adjustment. After making the zero point adjustment, you only need to adjust the high end measurement of each measurement parameter when making a 2-point adjustment.

Example procedure outline for 2-point adjustment of CH4 and CO2 using nitrogen as the 0% reference (Zero point adjustment) and a 60 % CH4 / 40 % CO2 gas mixture as the reference for the second adjustment points:
  1. Zero point adjustment tab: adjust the zero signal (low end reference point, 0 %) for both CH4 and CO2 using nitrogen.
  2. CH₄ adjustment tab: adjust the high end reference point (60 %) for CH4 using the CH4 - CO2 mixture.
  3. CH₄ adjustment tab: activate the CH4 adjustment.
  4. CO₂ adjustment tab: adjust the high end reference point (40 %) for CO2 using the CH4 - CO2 mixture.
  5. CO₂ adjustment tab: activate the CO2 adjustment.
The reference gas concentration examples presented here apply to MGP261. When calibrating and adjusting MGP262, refer to the Insight PC software help text instructions for MGP262-specific information.