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Calibrate the detector

Calibrate the detector

Perform a calibration to adjust the sensitivity levels of sensors and ensure accurate responses to gases. The detector can be calibrated in two ways:

  • Apply gas from a cylinder to the sensors manually through the pump inlet.
  • Use an IntelliDoX module.

Before you begin . Move to a normal atmosphere (20.9% v/v O2) that is free of hazardous gas.

  1. Go to the main menu and select > Start Calibration .
  2. Press and hold the button for three seconds to display the Powering Off countdown and continue to hold for the Starting Calibration countdown .
    The detector will enter the zero function. The Zeroing process starts automatically and lasts for five minutes. Current gas measurements are displayed, and entries above zero are highlighted
  3. Connect the calibration hose to the pump inlet. Make sure to use a demand flow regulator.
  4. Confirm that you want to apply Nitrogen to zero CO2.
  5. When Apply calibration gas now is displayed, apply the gas and wait for a maximum of five minutes. The detector first tests for a specific type of gas. When it detects enough of that gas for sensor calibration, a check box will be displayed next to that gas. Calibration then begins. Gas values will adjust on the screen during the calibration.
  6. When Turn gas off is displayed, disconnect the device from gas. Check marks will be displayed next to the calibrated sensors. These sensors reset to the number of days until the next calibration is due (for example, 180 days).
    The calibration cycle will take about two minutes after which the user will be prompted to Press button to continue.
  7. If the calibration was successful, Calibration Passed will be displayed. Press the button to exit calibration.
    If the calibration failed for some or all of the gases, either a Cal Error All gases applied mixed results message (if the detector was not successfully calibrated for all gases) or a Fail all gases message will be displayed. After the button is pressed, a Cal overdue message will be displayed.