FD-101

Calibration of FD-101 Overview 

Summary:
A step-by-step tutorial on calibrating your FD-101 gas detector. 

Model: 
FD-101-CO
FD-101-O2

Calibration Frequency: 
At least every 12 months.

Calibration Kit Items Required:

  1. Calibration Gas Regulator (C10)
  2. Tubing
  3. Calibration Gas Bottle

FD-103-O2 = Fresh Air Only
FD-103-CO = Calibration Gas (CO)

Calibration of FD-101-CO

▶️ Tutorial Calibration Video

Example: FD-101-CO

 

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

  1. Power on the gas detector in clean, fresh air and allow at least 2 minutes for the sensor reading to stabilize.
  2. Double-press the middle button to enter the menu, then continue pressing to scroll until the scale icon ⚖️ appears.
  3. Long-press the middle button to select it.
  4. The scale icon ⚖️ flashes during a 10-second countdown while zero calibration is performed.
  5. SUCC appears when calibration is complete.
  6. Press the middle button to return to the main display screen. The unit now reads 0 ppm in fresh air.

✅ STEP 2: SPAN Calibration.

  1. Complete a fresh air zero calibration first. Span calibration is not valid without it.
  2. Double-press the middle button to enter the menu, then continue pressing to scroll until the gas bottle icon appears.
  3. Long-press the middle button to select it. The icon flashes to indicate calibration mode is active.
  4. Fit the calibration cap and apply 200 ppm carbon monoxide calibration gas at 0.5 LPM flow rate. Allow 2 minutes, or until the A/D signal value stabilizes.
  5. Long-press the middle button to confirm the calibration.
  6. SUCC appears when calibration succeeds. FAIL appears if it does not.
  7. Shut off the gas flow, remove the calibration cap, and allow the sensor to return to baseline in fresh air. The detector is now span-calibrated and returns to the main display 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-101-CO has a full scale of 1000 ppm. The unit was calibrated to a reference gas of 200 ppm. Then, the PASS range is +/-2% of 1000 ppm = +/-20 ppm. Therefore, a PASS is between 180 ppm and 220 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.

Calibration of FD-101-O2

▶️ Tutorial Calibration Video

 Example: FD-101-O2

 

✅ STEP 1: SPAN Calibration to 20.9% in Fresh Air

  1. For the oxygen model, no need to complete a fresh air zero calibration first. Just proceed straight to a 20.9% span calibration.
  2. Double-press the middle button to enter the menu, then continue pressing to scroll until the gas bottle icon appears.
  3. Long-press the middle button to select it. The icon flashes to indicate calibration mode is active.
  4. Allow 1 minute, or until the A/D signal value stabilizes.
  5. Long-press the middle button to confirm the calibration.
  6. SUCC appears when calibration succeeds and then reads 20.9%. FAIL appears if it does not.
  7. The detector is now span-calibrated and returns to the main display screen.

✅ STEP 2: Verification

  1. Allow the oxygen detector to stabilize in fresh air for 2 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 detector logbook. Place a reminder calibration date sticker on the unit for the next calibration event.