2-point adjustment - GMP231

GMP231 User Guide

Document code
M211501EN
Revision
E
Language
English (United States)
Product
GMP231
Document type
User guide

To perform a 2-point adjustment of CO2 measurement using I2C protocol, you must perform the following sequence:

  1. Using the Adjust command, start 2-point adjustment for CO2.
  2. Supply the low concentration CO2 reference gas to the sensor and wait for three minutes until the measurement has stabilized.
  3. Using the Adjust command, record the first measured point and give the first reference value.
  4. Supply the high concentration CO2 reference gas to the sensor and wait for three minutes until the measurement has stabilized.
  5. Using the Adjust command, record the second measured point and give the second reference value.
  6. Use the Adjust command to end the adjustment.