CALIBRATION WITH A SPAN GAS
We encourage you to view our calibration video at www.amio2.com before starting.
REQUIRED COMPONENTS:
•
Certified span gas with approximately 5 ppm H
2
S in background of nitrogen
•
Stainless steel reducing regulator, outfitted with inlet/outlet pressure gauges and CGA 330
connection fitting (note: regulator must have a stainless-steel diaphragm)
•
AMI-supplied flexible (non-diffusive) tubing or a length of stainless-steel tubing
•
Tank wrench
CALIBRATION STEPS
1.
Connect the AMI-supplied non-diffusive flexible tubing or stainless steel tubing from the regulator
outlet fitting to the Span Inlet Gas Port.
2.
Open the valve of the Span Gas Tank and adjust the regulator pressure to approximately 20 psig.
3.
Press the ALARM HOLD OFF button if you are utilizing the alarm feature to avoid an alarm
condition.
4.
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.
5.
Allow the measurement reading to stabilize for 20 minutes.
6.
Span the Analyzer to the value of the H
2
S, specified on the Span Gas Tank, by doing the
following:
Note: Every
MODEL 3010BX
unit undergoes rigorous internal quality tests prior to shipping. This
includes a complete electronics and in-depth gas test.
Calibrate your Analyzer monthly using a calibration gas standard with your desired range of H
2
S
in a background of nitrogen. We recommend 5–10ppm H
2
S in a background of nitrogen for
safety for our low range (0–200 ppm) model.
If you are calibrating the high range
MODEL 3010BX
Analyzer (0–2000 ppm) with a Span
Gas, the Span Gas needs to be > 200 ppm.
CALIBRATION
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