PureAire Monitoring Systems, Inc.
8
1.1.3 Internal View
1.
Main Power Connector
— Connector for 24VDC power input. See section 3: Installation for
more information.
2.
Pyrolizer Assembly
— Converts Methyl bromide gas into Bromine gas prior to presentation to
the gas sensor.
CAUTION
-
The pyrolizer insulation temperature is above 150 F and can cause burns if touched
3.
Pyro Filament Drive PCB
— Controls power to the pyrolizer filament and signals the main
control electronics if a fault occurs.
4.
Control Electronics and readout
— Controls the sample pump, converts the signal from the
sensor cell and sends information to the local digital display and analog /relay terminal block.
NOTE
–
The flow rate is factory set and is continuously regulated via a built-in flow sensor.
5.
Flow Chamber
— The converted gas from the pyrolizer is introduced to the gas sensor in this
chamber. Sample flow into the chamber is continually monitored. If the sample pump fails, the
system fault relay is activated.
6.
Methyl Bromide Sensor Cell
— A renewable electrochemical sensor cell. Typical life is 3 to 6
years under normal operating conditions.
7.
Sample Pump
— This internal sample pump is used to draw the gas sample from the area into the
pyrolizer and flow chamber.
8.
Inlet & Exhaust
— These are connections for the incoming gas sample and outgoing exhaust
sample
Main Power Connector
Pyrolizer Assembly
Pyro Filament Drive PCB
Control Electronics / Readout
Methyl bromide sensor cell
Flow chamber
Sample Pump
Cooling fan
Strain relief
Exhaust and Inlet
