Table of Contents
Advertisement
3.3
Battery Pack Overview
WorkHorse Sentinel ADCPs require +20 to 60 VDC to operate. The stan-
dard AC Adapter runs on any standard AC power and supplies +24 VDC to
run the Workhorse when the batteries are not connected.
If both the battery (either Sentinel internal batteries or the External Battery
Pack) and power supply are connected, the Workhorse will select the high-
est voltage source for use. The batteries (when fresh) supply +42 VDC and
the power supply output is +24 VDC. The Workhorse will draw all power
from the battery if the battery voltage is above +24 VDC (the power supply
will have no effect).
NOTE. The +24 VDC AC adapter does not override the battery voltage!
Substitute your own power supply with a voltage of +45 to 60 VDC to
override the +42 VDC alkaline battery packs.
Batteries should be replaced when the voltage falls below 30 VDC (meas-
ured across the battery connector under no-load conditions).
NOTE. Battery replacement induces both single and double cycle
compass errors. The compass accuracy should be verified after replacing
the battery pack. The compass does not have to be recalibrated if the
compass verification passes specification.
These compass effects can be avoided by using an external battery pack.
The external battery housing holds two batteries, and can easily be
replaced on-site. If properly used, no compass calibration will be required.
It provides an option for extended ADCP deployments.
INTERNAL
I/O CABLE
DESICCANT
RUBBER BAND
THREADED
ROD (4)
WING NUT (4)
LOCK WASHER (4)
WASHER (4)
SUPPORT PLATE
BATTERY PACK
Figure 4.
P/N 957-6163-00 (January 2001)
RUBBER BANDS
BATTERY
CABLE
SPACER (4)
Battery Pack Overview
WorkHorse Sentinel User's Guide
page 7
Advertisement
Table of Contents
