Honeywell ACM 150 - Vacuum Sampling System; Available Outputs; Data Interface and Protocol

ACM 150
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4.3. Vacuum sampling system
The ACM 150 monitor samples up to 40 areas, which are scanned and analyzed
sequentially, as described in the Air sampling system. The main assemblies are:
Bypass Venturi Pump
Draws flow through sample tubes and bypasses the flow
to exhaust to provide a constant flow of fresh samples to
the monitor
Gas Cell Venturi Pump
Evacuate the sampled air from the gas cell after it is
analyzed.
Boost Pump (Mechanical)
Fill the evacuated gas cell with fresh sampled air for each
analysis cycle.
Sample Valve Assembly
Valves installed in the 10-port sample manifolds (up to 40)
that switch in sequence as the ACM 150 monitor scans the
sample
Cycle Valve Assembly Group of 6 valves that control the flow through the gas cell
Backup Exhaust Pump
Usually idle, this mechanical pump backs up the venturi
pumps to provide operation without CDA.
4.4. Available outputs
The following output relays are dry contact, double-pole/double-throw (DPDT), rated for 3
A @ 30 Vdc.
Programmable Output
Relays (80)
Default programmable relay settings
• Alarm 1 level set point for areas 1-40
• Alarm 2 level set point for areas 41-80
The user may change the default settings for each relay
to
activate
• At the Alarm 1 or Alarm 2 level
• For any gas, for all gases, or any selected group of
gases
• At any area, all areas, or any selected group of areas
Additional Output Relays
(6)
• Power fail
• Watchdog timer
• Manual Mode
• General malfunction
• General warning
• General alarm
4.5. Data interface and protocol
Network Ethernet
Protocols
TCP/IP web server
Other communication networks are available. Contact Honeywell for more information.