Air check 
Advantage
Ex Benzene Monitor
Features
- Detects Benzene at PPM levels
- “Smart” sensor electronics continuously checks flow and system status
- Built-in user selectable local dual level alarms with relay output
- Local gas concentration digital display 4-20 mA analog output
- Enhanced self-diagnostics capability decreases downtime and maintenance costs
The Air check
Ex Benzene
Monitor is a compact, extractive continuous gas
monitoring system designed to monitor in hazardous
areas. The system uses our proprietary disposable
electrochemical sensor cell combined with a long
life pyrolizer to provide extremely sensitive and
specific Benzene monitoring. Unlike traditional
LEL solid-state detectors, the Air
check
Ex pyrolizer
technology is extremely sensitive and capable of
detecting parts-per-million concentrations of Benzene
at PPM levels without being affected by humidity
or other environmental conditions.
The heart of the monitoring system is a long life
pyrolizer designed to convert Benzene to an electrochemically
active gas detected on PureAire’s sensor cell.
The Air check
Ex electronics,
pyrolizer, sample pump and sensor cell are housed
in a weather and explosion-proof enclosure suitable
for installation in Class 1, Division 1, Group
B.C and D hazardous areas.
The instrument’s “smart” circuitry continuously monitors
sampling system performance. Continuous gas concentration
information is transmitted via 4-20mA signal to
PureAire controllers, PLC’s or remote alarm systems.
Should a system error occur, the Air
check
Ex outputs
a specific mA signal to remote alarm/control systems
to immediately alert control room personnel.
Connects to DCS and PLC Controls
The Air check
Ex Benzene
Monitor is 24VDC powered and transmits continuous
gas concentration levels to any distributive control
system, programmable logic controller or PureAire’s
proprietary single and multichannel controllers.
The Air check
Ex Monitor
can be operated remote up to 1,000 meters, 0.6
miles from centralized distributive control systems.
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