Calibration of FD-600M-O2

Summary:
A step-by-step tutorial on calibrating your FD-600M-O2 datalogger analyzer.

Model:
FD-600M-O2

Calibration Frequency
At least every 12 months. 

Calibration Kit Items Required:

  1. Calibration T-piece & Tubing
  2. Calibration Gas (N2)
  3. Calibration Gas Regulator (C10)

▶️ Tutorial Calibration Video

 

STEP 1: SPAN Calibration to 20.9% oxygen in fresh air.

  1. Power on the analyzer and allow 60 seconds for stabilization in fresh air.
  2. Verify the pump is operating.
  3. Check the reading: If it's within ±0.1% of 20.9%, no calibration is needed.

For calibration to precisely 20.9%:

  • Select "GasCalib" from the Menu Screen
  • Enter passcode: 1111
  • Verify the default span value shows 20.9% (left column)
  • Current reading appears in right column
  • Press middle button "Calib" to confirm 20.9% calibration gas concentration
  • Press middle button ">>" to save the span calibration
  • Wait for "CONFIG SUCCESS!" confirmation

The analyzer is now calibrated to 20.9% oxygen in fresh air.

STEP 2: ZERO Calibration to 0.0% oxygen using Nitrogen Gas.

  1. Expose the gas analyzer to 100% Nitrogen Gas for at least 1-2 minutes. The gas analyzer will approach 0.0%.
  2. Ensure you are using a flow rate of 0.5 LPM and a T-piece as recommended.
  3. Check the reading. If its within ±0.1% of 0.0%, no calibration is needed.

For zero calibration to precisely 0.0%:

  • Select "GasZero" from the Menu Screen.
  • Highlight the gas you would like to ZERO (if its the FD-600M-4GAS model select O2)
  • Press the "ZERO" button to confirm the zero value.
  • When complete, “CONFIG SUCCESS” is displayed. 

STEP 3: Verification

  1. Allow the oxygen analyzer to stabilize in fresh air for 5 minutes, confirming it reads 20.9%.
  2. Once verified, your unit is properly calibrated and ready for operation.
  3. Don't forget to document the calibration event in your gas analyzer log book. Place a reminder calibration date sticker on the unit for the next calibration event.