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2.7.3 Chemcassette™ Tapes
Chemcassette™ tapes are tagged with a radio frequency identification (RFID) tag to
automatically identify the following:
Serial number
l
Gas family/ tape type
l
Revision level
l
Expiration date of the tape
l
Chemcassette™ leader parameters
l
The module uses a leader on the Chemcassette™ tape to allow calibration of the optics every
time a new tape is installed. This feature can be bypassed.
2.7.4 Optional ChemCam
The ChemCam is a small video camera located between the take-up reel and the optic head on
the module. It provides a means to observe alarm level stains.
2.7.5 Sample Filters
The Chemcassette™ module includes three types of filters in the sample flow system.
Particulate filters protect the internal precision orifice from dust particles. An acid filter is used
on the common line to the pumps. Both types of filters are located in a removable filter block
on the side of the Chemcassette™ module. An internal particulate filter protects each
proportional valve.
Vertex M
29
User Manual
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