Brochure

The APOGEE automation system can maintain desired
pressurization and still vary ventilation rates to reduce
energy consumption. Ventilation is highest when the
room is occupied and chemicals or contaminants are
present. Ventilation can be lowered when the room is
unoccupied and/or the risk is low.
The APOGEE system can maintain pressurization in
multiple ways. The majority are controlled through air
flow tracking integrated directly to the building automa-
tion system. In addition local sensors can monitor and
display pressure and provide feedback to the system.
The Differential Pressure
Monitor (DPM) measures
and displays the differential
pressure between a room
and its adjoining space.
The Siemens Room
Pressure Monitor is an
integrated monitor and
display unit.
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Fume Hood and Specialty Exhaust Control:
Fume hood control:
The APOGEE system offers Constant
Volume, 2-Position Constant Volume, and
Variable Air Volume Fume Hood control.
CV: A Constant Volume Fume Hood
Controller maintains a constant volume
of exhausted air regardless of the size of
the face opening or sash configuration.
CV2: The 2-Position Constant Volume Fume Hood Controller
maintains one of two selectable and adjustable constant
volume flow rates, such as “Occupied” – “Unoccupied”.
VAV: The Variable Air Volume (VAV) Fume Hood Controller
varies the amount of exhaust air to maintain constant face
velocity as the fume hood sash is raised and lowered. The
ability to vary the exhaust airflow maintains a safe face
velocity regardless of sash position and reduces energy waste.
Fume hood monitoring:
Safety standards (ANSI/AIHA Z9.5, NFPA 45, etc.) and
regulatory agencies (U.S. OSHA) require all fume hoods to have
a monitoring device to inform the fume hood user as
to whether the fume hood is providing safe and proper
containment. Siemens offers an Operator Display Panel for
use with VAV controlled fume hoods as well as
a Fume Hood Monitor for CV systems.
In addition to control for chemical fume hoods,
Siemens offers exhaust control applications for
for biosafety cabinets, snorkels, canopy type
hoods and other exhaust containment devices.
Room Control:
The Lab Controller Module is an
independent, stand-alone DDC
Controller that controls laboratory
room air changes/ventilation,
pressure, and environmental conditions including temperature.
The controller maintains positive or negative room pressure by
continuously measuring room total supply and exhaust and
adjusting the flow control device(s) to maintain the user
defined differential airflow between the room air supply and
total exhaust. Temperature control is provided by measuring
the room temperature and controlling the position of the
reheat valve and adjusting the airflow.
Pressurization:
In addition to providing the minimum required air changes
per hour (ACH) for each laboratory room, a properly designed
laboratory ventilation system will maintain the laboratories
(as well as any rooms having potentially hazardous or pungent
fumes) at a “negative static pressure” with respect to the
non-laboratory areas of the facility. Rooms can alternately
be positively pressurized to protect the contents from
outside contamination.
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