ACM 150
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Figure 12. Mechanical pump assembly
The Backup Exhaust Pump is an oil-less carbon vane vacuum pump with a high
flow capacity. If air is supplied to the venturi pumps and they are operating properly,
this pump is inactive. Insufficient vacuum, when detected by an absolute pressure
transducer, automatically applies power to the pump. The backup pump turns on
for both venturi pumps under these conditions. When the air supply is restored or
the problems are corrected, the user manually switches the ACM 150 monitor from
the automatic mode into the manual mode and back to automatic mode, using the
Diagnostic menu to use the venturi pumps again.
The Boost Pump speeds up the sampling cycle. It is a dual head diaphragm pump
with Teflon coated internal parts. It is always on. In the surge and fill cycles, the
boost pump provides a high rate of sample flow into the gas cell. In the evacuation
and analyze cycles, it keeps the sampled air flowing to bypass.
Summary of Contents for ACM 150
Page 1: ...ACM 150 Air Composition Monitor Guide to Installation Operation and Maintenance ...
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Page 15: ...ACM 150 15 Figure 1 ACM 150 outside labels ...
Page 16: ...ACM 150 16 Figure 2 ACM 150 inside labels ...
Page 29: ...ACM 150 29 Figure 15 Relay output board ...
Page 59: ...ACM 150 59 Figure 30 Installation diagram ...
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Page 156: ...ACM 150 Air Composition Monitor Revision 2 ECO HAA150063 December 2015 Honeywell Analytics ...