Manual revision 001
Section 4: Deploying and Operating SBE 39
plus
-IM
SBE 39
plus
-IM
66
Attaching SBE 39plus-IM to Mooring Cable
For an SBE 39
plus
-IM with an embedded (internal) thermistor, there is a
depression
in the end cap around the thermistor.
Do not deploy the
39plus-IM with the end cap up
, as sediment and/or non-flushing water can
get trapped in this space, affecting the response of the thermistor.
To achieve maximum battery pack endurance, recommended deployment
orientation for all SBE 39
plus
-IM is thermistor end down or horizontal. See
Deployment Orientation
in
Section 2: Description of SBE 39plus-IM
.
SBE 39plus-IM without Optional Fairing / Net Fender
1.
Attach the mounting brackets to the insulated mooring cable:
A.
Open each mounting bracket by unthreading the two large titanium
hex bolts.
B.
Place the insulated mooring cable inside the brackets’ grooves.
C.
Reinstall each bracket half with the hex bolts.
D.
Verify that the two halves of the modem coupling toroid have come
together evenly, and that the mounting clamp is secure.
2.
Verify that the hardware and external fittings are secure.
For both mounting
brackets – loosen
hardware to separate
bracket halves and
mount on mooring cable
Mounting clamp, with
opening sized to
specified cable
diameter – cable
clamped
by this
bracket. Note: Installing
clamp on larger cable
than specified may
cause damage to cable
and/or modem and
prevent IM
communications.
Mounting guide /
inductive modem
coupler – contains
modem coupling toroid
core. Cable goes
through here but is
not
clamped
, to avoid
putting through tension
on end cap (which
could pull off end cap).
Mounting guide / Inductive Modem Coupler Detail
(Note: Photo is 37-IMP; detail similar for 39plus-IM)
Guide is sized
slightly
bigger than specified cable diameter, to allow cable to
pass through freely but limit vibration of 39
plus
-IM on cable
For proper
communications,
2 halves of
modem coupling
toroid core must
mate, with no
gaps
Guide
Guide
Modem
core
Modem
core
Air space
around
embedded
thermistor