FD-600

Calibration of FD-600

Summary:
A step-by-step tutorial on calibrating your FD-600 toxic gas analyzer.  

Model: 
FD-600. All versions except FD-600-O2. If you have an oxygen sensor option please follow the FD-600-O2 calibration procedure. 

Calibration Frequency: 
At least every 12 months.

Calibration Kit Items Required:

  1. Calibration Gas Bottle
    • Select the corresponding calibration gas for your unique gas detector. To do so, go to the product listing of your gas detector for the recommended calibration gas bottle.
  2. Calibration Gas Regulator (C10)
  3. Calibration T-piece & Tubing
Hydrogen Analyzer | 0 - 1000ppm - Forensics Detectors

▶️ Tutorial Calibration Video

 Example: FD-600-H2

Note: Example of Hydrogen (FD-600-H2). Each FD-600 analyzer is unique and made for a specific single target gas. Some versions have multiple sensors. Follow this procedure using the recommended calibration gas bottle for your target gas.

✅ STEP 1: ZERO Calibration to 0 ppm using Fresh Air.

  1. Power on your gas detector and allow 120 seconds for stabilization in fresh air.
  2. Expose the gas analyzer to fresh air or pure nitrogen for at least 1-2 minutes. 
  3. If using an N2 gas bottle, use a flow rate of 0.5 LPM and a T-piece
  4. The gas detector may or may not read precisely 0 ppm. Depending on the model, it may or may not read 0.0 or 0.00 ppm. To zero calibrate and make it read exactly 0, 0.0, or 0.00 ppm, undertake the following steps.
  5. Press the middle button to go to the Menu Screen.
  6. Select "GasZero" by pressing the middle button.
  7. Select the gas sensor you wish to use to zero calibrate. For units with a single sensor, only one choice will be shown. All sensors will be listed for analyzers with multiple sensors. Select your sensor and press the middle button.
  8. Then press "Save".
  9. Done! 
  10. Go back to the main display screen, the unit will now read 0 ppm in fresh air.

✅ STEP 2: SPAN Calibration.

  1. Ensure you first undertake a Zero Calibration.
  2. Then, expose the gas analyzer to your calibration reference gas for 2 minutes or until the reading has stabilized. Use a flow rate of 0.5 LPM and connect the gas to the gas analyzer via the T-piece and tubing.
  3. Press the middle button to go to the Menu Screen.
  4. Select "GasCheck"
  5. Enter passcode: 1111.
  6. Select the gas sensor you wish to calibrate.
  7. Press "EDIT" to enter the span reference gas value for calibration, which is the same value shown on your gas bottle or, more precisely, on your calibration gas bottle Certificate of Analysis. Enter this value on the left column under "CALIB".
  8. Then press "SURE" and then press "SAVE".
  9. The analyzer is now span-calibrated, and the calibrated value is shown on the main screen.

     

✅ STEP 3: Verification.

  1. Allow the gas detector to stabilize in fresh air for 5 minutes, confirming it reads 0 ppm in fresh air.
  2. Expose the analyzer to the calibration reference gas to verify the calibration and detection repeatability.
  3. If the gas detector reading is within +/- 2% F.S. of the calibration gas value, this is considered a PASS. For example, FD-600-H2 has a full scale of 1000 ppm. The unit was calibrated to a reference gas of 100 ppm. Then, a PASS range is +/-2% of 1000 ppm = +/- 20 ppm. Therefore, a PASS is between 80 ppm and 120 ppm. 
  4. Once verified, your unit is properly calibrated and ready for operation.
  5. 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.