Micromeritics AccuPyc II 1340 Operator's Manual page 23

AccuPyc II 1340
3. Purge the regulator and inlet tubing; this is important to prevent contamination of the
analysis gas.
a. Close the regulator shut-off valve; turn it fully clockwise.
b. Turn the pressure regulator control knob fully counterclockwise.
c. Slowly open the gas bottle shut-off valve; turn it counterclockwise, then quickly close
it.
d. Observe the high-pressure gauge.
If the pressure decreases, tighten the nut connecting the regulator to the gas bottle. If
the pressure is stable, proceed to step e.
Make sure the gas supply equipment is adequately vented before performing the next
step.
e. Turn the pressure regulator control knob clockwise until the low-pressure gauge
indicates 15 psig (100 kPag).
f. Open the regulator shut-off valve; turn it counterclockwise.
g. Open the gas bottle shut-off valve; turn it counterclockwise. Flow gas for 10 to 30
seconds, then close the valve.
h. Close the regulator shut-off valve; turn it clockwise.
4. Attach the other end of the copper tubing to the gas inlet located on the rear panel of the
pycnometer. The pycnometer is shipped with a plug in the inlet; remove and discard the
plug, or store in a safe location for future use.
June 2013
Installing the Analyzer
Gas inlet plug
2-5