CGP-31 Handheld Carbon Dioxide Meter CO2 Measurement in Gas or Liquid Phase Samples Power Saving Design 2000 h hours continuous i measurement with two AA batter

Measurement principle Measurement method Protection cover (with shoulder belt) Electrode stand Electrode holder AA alkaline battery (trial use) (2) Instruction manual A diaphragm-type glass electrode based on the electrochemical principle is employed for this CO2 gas sensor. According to this principle, when CO2 gas passes through the diaphragm and dissolves in the inner solution, the pH of the solution changes. Because the change of the pH is proportional to the CO2 concentration, the degree of change is measured to determine the CO2 concentration. The following figure indicates the relationship,...