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Lab Hood
and BSC Monitors Links
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Contact
ALNOR at:
1-800-424-7427 or +1 651-490-2811
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AirGard® Air Flow Monitors
The AirGard 350CEM and 315BSC Air Flow Monitors continuously monitor
and indicate air flow levels in critical environments. Both models feature
wide velocity ranges to accurately measure air flow across HEPA filters
or in exhaust ducts. The AirGard 410-HE Hazardous Environments Monitor
is specifically designed to monitor air flow in explosion-proof lab hoods
or hoods that are used in environments where all equipment must be explosion-proof
or intrinsically safe. All these models are easy to install, making them
an excellent choice for both new installations and retrofits.
Alnor AirGard Air Flow Monitors measure the exhaust of bio-safety cabinets
and other hoods using a remote probe inserted in the air flow stream of
the exhaust duct. The sensing probe of 350CEM and 315BSC Monitors measures
the velocity in the exhaust duct and displays important information on
a module mounted on the face of the bio-safety cabinet. The 410-HE Monitor
uses a pressure averaging tube mounted in the exhaust duct, a pressure
switch mounted on top of the lab hood, and a display module mounted to
the face of the lab hood to monitor and indicate exhaust duct pressure.
When the velocity or pressure drops below a user-determined level, all
AirGard Air Flow Monitors activate an audible alarm, visual alarm, and
relay output. This alerts personnel that the air flow at the face of the
lab hood or bio-safety cabinet is inadequate. The 315BSC monitor has jumbo
LEDs to indicate safe, marginal, or low duct exhaust and sounds an audible
alarm during low duct exhaust conditions. The 350CEM monitor adds a digital
bar graph as a trend analysis tool and a hidden digital velocity display
to aid in the diagnosis of problem exhaust flows. The 350CEM monitor also
has a high flow alarm to help detect excessive exhaust air flow; this
is a powerful preventative maintenance and diagnostic tool. The 410-HE
Hazardous Environments Monitor indicates unsafe air flow with a red LED
and an audible alarm. In addition, all AirGard Air Flow Monitors can report
unsafe air flow conditions to other personnel in a remote location by
means of a relay output.
Installation and set-up of the Alnor AirGard Air Flow Monitors is quick
and easy. The 350CEM and 315BSC Monitors can be either flush or kit mounted.
A single point field calibration is recommended for the 350CEM Monitor;
the 315BSC Monitor requires setting the low alarm set point. The 410-HE
Monitor is kit-mounted and requires setting the low alarm set point.

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350CEM
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315BSC
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410-HE
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| range |
25-2,000 fpm
(0.127-10.16 m/s) |
25-2,000 fpm (0.127-10.16 m/s) |
0.07-0.15 inches (17.4-37 Pa) water |
| accuracy |
±5% of reading or 5 fpm, whichever is greater |
±5% of set point |
0.04 inches (10 Pa) water at minimum setpoint, 0.06
inches (15 Pa) water at maximum setpoint |
| visual display |
bar graph with green, yellow, and red zones; jumbo
green, yellow, and red LEDs |
jumbo green, yellow, and red LEDs |
yellow and red LEDs |
| alarm indications |
jumbo red LED, audible alarm, relay output |
jumbo red LED, audible alarm, relay output |
red LED, audible alarm, relay output |
| input power |
9-30 V AC/DC |
9-30 V AC/DC |
120 V AC |
| mounting |
flush or kit |
flush or kit |
kit |
| agency listings |
CE |
CE |
CE |
More detailed
specifications (350CEM and 315BSC)
More detailed specifications (410-HE)
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