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Song Meter SM4M User Guide Supplement
1 Overview
Wildlife Acoustics, Inc.
page
5
2
Desiccant
: Your unit ships with 5 packs of desiccant.
Apply a desiccant pack inside the unit before each
deployment.
3
Silicon Lubricant
: Apply to the O-Rings and flat surface
points inside the top cap.
4
O-Rings
: O-Rings protect seals against water.
5
Spanner Wrenches
: Set of two identical wrenches allow
installation and removal of the threaded top cap.
1.7
Pressure Release Valve
A pressure release valve is installed on the top cap next to the hydrophone. The
pressure release valve prevents dangerous pressure build up greater than 10 PSI
within the enclosure by releasing air though the valve. No maintenance is
required to the valve and it should not be removed. It should be verified that it is
hand tight before deployment.