SICK GM35

101
8009441/YN36/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
MAINTENANCE
8.7 Filter box measurement for checking the measuring ducts of H
2
O and CO
2
The grid filter box serves for checking the H
2
O and CO
2
measuring duct (for products with
very high concentration measuring paths) of the GM35. Filter box measurement is based
on light absorption of grid filters (output of measured extinction).
Requirements
Components required:
• Grid filter box RMF.
• Filter box adapter plate with threaded holes to attach the grid filter box.
Note Measured value are displayed as extinction for both measuring channels (H
2
O, CO
2
).
8.7.1 Setpoint values
The RMF grid filters are calibrated. The setpoint values for the individual filters are shown
on the label on the enclosure. Filters with extinction values up to 0.8, suitable for the
application range of the GM35, are used. Higher extinction values exceed the warning or
malfunction threshold for not sufficient signal level.