LR-24 Electrofisher - Field Environmental Instruments

DISPLAY PANEL MENU KEY
USER'S MANUAL
Display Panel Menu Key Descriptions (Cont.)
has been selected or it will reduce its output voltage if DC output
has been selected. The LR-24 reduces the output by 20% for every
2 degree Fahrenheit above the trip point, up to a maximum of 80%
reduction.
The LR-24 has two thermal sensors inside: one monitors the air
temperature inside the electronics cover and the other monitors the
temperature of the heat sink. The trip points are 150 degrees for the
air temperature and 190 degrees for the heat sink temperature. The
shutdown temperature for the air is 160 degrees and 200 degrees for
the heat sink. If either of the shut down temperatures is reached, the
LR-24 will shut down even if Thermal Power Limiting is enabled.
With Thermal Power Fold Back enabled when either of the trip
points is reached, the LR-24 will begin to beep both audio alarms
simultaneously and the status screen will look similar to that shown
in Figure 2.11.
Fig. 2.11
This display says that the LR-24 has entered thermal power limiting.
The output frequency has been reduced by 20%. The output
frequency was set to 60Hz and has been reduced to 48 Hz. The
average output current is 1.26 amps and the peak output current
is 5.83 amps. If the temperature continues to rise, the LR-24 will
continue to reduce the output in 20% steps to a maximum of 80%.
This status display can be seen as long as the pole switch is pressed.
When the pole switch is released, the standard status screen will
return. This allows continued monitoring of battery condition, or
the temperature of the LR-24. As the LR-24 cools down the output
is automatically increased back toward the original settings. The
LR-24 will not increase the output beyond the original settings.
Fig. 2.12
System Menu 5: Anode Out Of Water Disable
Allows the temporary override of the Anode Out of Water feature.
This option allows the LR-24 to be used in very shallow water, where
it may not be possible to keep the anode in the water all of the time.
This option is only active while the LR-24 is powered on and the
mode resets to “Enabled” on power up.
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