YOKOGAWA OX100 - Operation: Calibration Procedures; Atmospheric Air Calibration

<3. Operation>
3-1
IM 11M10A01-01E
3. Operation
3.1 Calibration
• As described below, calibrate the span immediately before starting a measurement.
(1) Before using the 0 to 1000 ppm O
2
range, perform one-point calibration with calibration gas
of concentration between 1000±100 ppm O
2
/N2.
(2) Before using the 0.1 to 25% O
2
range, perform one-point calibration with atmospheric air.
(3) If you use both ppm and % ranges, be sure to calibrate the ranges in the following order:
rstperformone-pointcalibrationwithair,then1000ppmO
2
calibration.
• Beforecalibrating,turnonthepowerandallowtheOX100towarmupforatleast10
minutes then perfom air cleaning.
3.1.1 One-pointCalibrationinAtmosphericAir(SpanCalibration)
PresstheModekeytwice,andconrmthatthe“Air”lampislit.
Supply cleaning air to the sensor, and then press the ENT key. This completes 20.6% O
2
calibration, and returns the instrument to measurement status (the display indicates the O
2
concentration.
CAUTION
If calibration fails, and the ALM lamp lights for two seconds, replace the sensor (part no. K9424BA).
4th Edition : Oct. 23, 2019-00