AMI 210BX - Calibration

CALIBRATION WITH A SPAN GAS
We encourage you to view our calibration video at www.amio2.com before starting.
REQUIRED COMPONENTS:
• When using a calibration gas standard, we recommend selecting a percent level of oxygen near
your measurement range of interest in a background of nitrogen (example: 5.0% O
2
in N
2
)
• Stainless steel or brass body pressure reducing regulator, outfitted with inlet/outlet pressure
gauges and CGA-580 connection fitting (note: regulator must have a stainles steel diaphragm)
• Flexible (non-diffusive) tubing (available for purchase from AMI) or a length of stainless steel
tubing
• Tank wrench
CALIBRATION STEPS
1. Open the valve of the Span Gas Tank and adjust the regulator pressure to approximately 20 psig.
2. Press the ALARM HOLD OFF button if you are utilizing the alarm feature to avoid an alarm
condition and adjust the UP/DOWN ARROWS for the desired Hold-Off/Bypass time in minutes
This will Hold-Off/Bypass the alarm relays and Analog output.
3. Rotate the 3-WAY SELECTOR VALVE, located on the front panel of the Analyzer, to the SPAN
position and adjust the flow rate to approximately 1 SCFH.
4. Allow the measurement reading to stabilize for 2 to 5 minutes.
Note: Every MODEL 210BX unit undergoes rigorous internal quality tests prior to shipping. This
includes a complete electronics and in-depth gas test.
For the best accuracy, calibrate your Analyzer monthly using a calibration gas standard. We
recommend selecting a percent level of oxygen near your measurement range of interest in a
background of nitrogen (example: 5.0% O
2
in N
2
)
CALIBRATION
There are 2 methods for calibration:
•Calibration with a Span Gas
or
•Calibration with Air
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