Aquametrix AM-TBR Turbidimeter User Manual - Manual (Page 9)

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Figure 2 - Touch Pad
1.5. Vapor Purge
The AM-TBR is equipped with a continuous vapor purge system. A replaceable desiccant pouch
in the lower portion of the instrument dries the air. System heat is used to warm the air. A fan
inside the instrument continuously circulates heated dry air around the optical well and the flow
through cuvette. This feature eliminates the need for a dry purge line.
The AM-TBR monitors the replaceable desiccant pouch condition continuously. The LCD display
will show DESC on the lower line in the event that the desiccant pouch needs replacement.
Replacement desiccant pouches are available from Water Analytics or the local representative
(Part# 21555R). Refer to section 10.2
The desiccant can activate an alarm to notify the operator of a saturated desiccant. See section
7.15.
Note: Prior to installing the desiccant pouch for the first time the shipping support must be
removed. This tube can be discarded after installation.