Sensor Calibration
It is suggested that this device should be calibrated on a routine basis, such as once per year or as prescribed by the user’s quality system requirements.
A proper calibration of the sensor requires two gases. The first gas should be pure Nitrogen or Argon. This contains no Hydrogen, and is therefore referred to as the Zero Gas. The second gas is the Span Gas. The Span Gas should ideally contain a quantity of Hydrogen similar to the amount of Hydrogen in the process gas. The Span Gas should also include any other gases that are present in the process gas in their respective percentages. The more similar to the process gas the calibration gas is, the more accurate the calibration will be.