EC9830 CO ANALYZER OPERATION MANUAL
3-4 98307600 Rev. C-1
Figure 3-1. Dilution Method for Calibrating CO Analyzers
3.2.1.2.1 Flow Controller(s)
Device capable of adjusting and regulating flow rates. Flow rates for the dilution
method (Figure 3-1) must be regulated to ±1%.
3.2.1.2.2 Flowmeter(s)
Calibrated flowmeter capable of measuring and monitoring flow rates. Flow rates
for the dilution method (Figure 3-1) must be measured with an accuracy of ±2% of
the measured value.
3.2.1.2.3 Pressure Regulator(s) for Standard CO Cylinder(s)
Regulator must have a non-reactive diaphragm and internal parts and a suitable
delivery pressure.
3.2.1.2.4 Mixing Chamber
A chamber designed to provide thorough mixing of CO and diluent air for the
dilution method.