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ACM 150
Maintaining AC power
Most users want the ACM 150 monitor to continue to operate when line power
is interrupted. The monitor may be wired to either a UPS, Uninterruptable Power
Supply, or to an Emergency Power source.
Utility gases and exhaust piping
Nitrogen supply
The ACM 150 monitor requires a constant supply of nitrogen, which is used as a
dry purge gas for the optics bench and as a zero gas for the Background cycle. The
requirements are:
Source
Quality
External Pressure Regulator/Shut-off
Delivery Pressure
Connection
Consumption
Air supply
Compressed air is required to operate the venturi pumps. It is also used for the
optional Line Leak Test:
Source
External Pressure
Regulator/Shut-off
Quality
Pressure
Connection
Consumption
CAUTION!
High pressure air is used inside the venturi pumps and can be hazardous. Shut
off the air supply and verify that no stored pressure is present before servicing
the venturi pumps.
MISE EN GARDE!
L'air à haute pression est utilisé à l'intérieur des pompes venturi et peut être
dangereux . Fermer l'alimentation en air et vérifier qu'aucune pression stockée est
présent avant l'entretien les pompes à venturi.
plant bulk nitrogen supply or N
cylinders
99.9% or better
located near the ACM 150 monitor (by
installation contractor)
set external regulator to 5 psig (0.35 kg/
cm
)
2
1/4 inch tube fitting (per
less than 8 liters/minute, intermittent
clean, dry compressed air (CDA) or instrument-grade
air
locate near the ACM 150 monitor (by installation
contractor)
filtered and oil-free with a dew point of -20°F (-29°C)
65-70 psig set on the internal regulator (included)
3/8 inch tube fitting (per
venturi pumps 12 scfm (340 lpm)
49
2
Figure
25)
Figure
25)
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