Micromeritics FlowSorb III 2305 Operator's Manual page 34

Connecting the Gas Supply
Shut-off Valve Nut
Brass Reducer Fitting
3. Tighten the regulator shut-off valve nut.
Do not over-tighten the fittings. Doing so can collapse the brass fitting and
cause a leak.
4. Attach the copper tubing to the regulator or to the brass reducer fitting.
5. Purge the regulator as follows:
a. Close the regulator shut-off valve by turning it fully clockwise. b.
Turn the pressure regulator control knob fully counterclockwise.
c. Open the gas bottle valve by turning it counterclockwise, then close the
d. Observe the gas bottle pressure gauge. If the pressure decreases, tighten
For hazardous gases, make sure the gas supply equipment is adequately
vented.
e. Turn the pressure regulator control knob clockwise until the outlet pres-
f. Make sure the gas bottle valve is completely closed.
2-8
Two-Stage Pressure
Reducing Regulator
Regulator
Shut-off Valve
Copper Tubing
Figure 2-1. Typical Gas Pressure Regulator Assembly
gas bottle valve.
the nut connecting the regulator to the gas bottle. If the pressure is sta-
ble, proceed to step e.
sure gauge indicates 0.11 MPa (15 psig). Then open the regulator shut-
off valve by turning it counterclockwise. This action will purge the
regulator and copper tubing.
Bottle Shut-off Valve
Gas Bottle
Pressure Control
Knob
FlowSorb III
Aug 00