Model 3440
Appendix A
–
13
B
B
a
a
t
t
t
t
e
e
r
r
y
y
C
C
h
h
a
a
r
r
g
g
i
i
n
n
g
g
With fully charged batteries, the Model 3440 gauge will remain
operational for approximately eight weeks under normal (8-
hour day) conditions.
If the batteries become discharged, the following message will
be displayed on the gauge:
*** WARNING! ***
Battery Low!
When this display appears, there are a few hours
remaining before the battery must be recharged. In
an emergency, a 30-minute recharge with the dc or ac
charger gives several hours of use. If possible, run the
batteries down before recharging.
To charge the NiMH batteries:
1
1
.
.
Plug the ac charger or dc adapter into the charger connector
in the ga
uge’s control panel (see
Control Panel on page 3
2
2
.
.
If using the ac charger, plug the other end of the charger into
a standard 100
–
240 V ac outlet. If using the dc adapter,
connect the other end to any 12-14 V dc source (such as a
vehicle's cigarette lighter). The battery charging indicator
will light.
3
3
.
.
To ensure a full charge, allow the batteries to charge until
the battery charging indicator goes out (approximately
three hours).
4
4
.
.
After recharging the batteries, unplug the ac charger or dc
adapter and store for later use.
Summary of Contents for RoadReader 3430
Page 14: ...1 6 Figure 1 Model 3440 Gauge and Accessories...
Page 19: ...Model 3440 2 3 Figure 2 Direct Transmission Geometry Figure 3 Backscatter Geometry...
Page 20: ...2 4 Figure 4 Backscatter Surface Density Effects Top Layer Effect Curves...
Page 22: ...2 6 Figure 5 Effect of Moisture on Depth of Measurement...
Page 164: ...F 2 STANDARD COUNT LOG Gauge Serial Number _____________ Date MS DS Date MS DS...
