SEAGUARD Sentry multizone Instructions

Introduction

Sentry
mutizone
LED's provide indication of the vessel's level of cathodic protection. The multizone capability of the
Sentry
mutizone
For example, the external hull may represent one zone, other zones may include the insides of sea
chests, ballast tanks, water jet tunnels etc. Each zone requires a reference electrode to be installed.
The Sentry
multizone
lead.
For our other corrosion monitor products visit our web site at

Sentry multizone installation

83.5
Box
outline
Box mounting
hole locations
Connect to hull

Sentry test

Mount the Sentry
Once re-assembled press the 'test' button and check that all lights illuminate briefly.
During this lamp test check that the appropriate material is displayed on the LCD ('ALU' for
Aluminum, 'FE' for Steel or 'Br' for bronze).
Sentry multizone instructions
is a microprocessor based multi-zone corrosion monitor. An LCD display and
allows up to three independent zones on a vessel to be simultaneously monitored.
kit comprises a multizone monitor, mounting screws, batteries and an earth
zone
1
2
3
test
E 1 2 3
Zone 3
ref electrode
Zone 2
ref electrode
Zone 1
ref electrode
and reference electrode as described above.
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a. The Sentry
convenient location such as in the engine
room or in the vessel's bridge/pilot house.
The box dimensions are 115 mm x 65 mm x
40 mm deep.
b. Drill two 3.7/3.8mm diameter holes at 83.5
mm by 52.5 mm centers on the hull bulkhead
or other suitable mounting location.
c. Remove the
the two 8g x 12 mm self tapping screws
provided.
d. Insert the 3 x AA batteries supplied. Refasten
the Sentry
pack remains inside.
e. Connect terminal E to the hull with the black
earth lead provided.
f. Connect terminals 1,2 & 3 to the blue
reference electrode wires for zones 1,2 & 3
respectively.
Note: The reference electrode is purchased
separately.
S-SM-11-01f / 1
can be bulkhead mounted in any
Sentry lid. Mount the box using
lid making sure that the desiccant