User's Manual

Vertex SF System
14
User Manual
Chemcassette Detection System
The Chemcassette® Analyzer module is a self- contained, microprocessor controlled analyzer
that occupies one slot in a Vertex tier. Sample lines and the vacuum source are connected to the
Chemcassette® via a single 10-tube connector.
The system powers up in the same state as when powered down. Data is stored in the module’s
memory until the data acquisition computer retrieves it.
The Vertex Analyzer modules use the Honeywell Analytics’ Chemcassette® optical detection
system. Analyzer modules sample and detect a specific gas or family of gases.
• Each eight-point Analyzer module:
• Manages Chemcassette® tape transport
• Provides optical detection of stain
• Directs sample flow through the Chemcassette®
• Stores data for retrieval by the data acquisition computer
Components of the detection system include:
• Chemcassette® detection tape
• Optics and electronics for the detection system
• Chemcassette® tape transport mechanism
• Self adjusting manual needle valve
Detector Optics
The heart of the Chemcassette® module is an optical detection system that measures a stain that
develops on the Chemcassette® tape in the presence of a target gas. Each eight-point Analyzer
module has two detection heads, each with four individual detectors.
Stain Pattern
The following chart shows the stain pattern of sample detection on the Chemcassette® tape.