Easy to Use
Simplified manual control knobs, and streamlined settings allow adjustment over output frequency and duty cycle. All controls are housed inside of a non-conductive, waterproof enclosure with a shatter resistant cover. The externally accessible anode and cathode plugs and battery connector make the connection of electrodes and battery packs quick and easy.
LCD Display
The easy-to-read backlit LCD display shows real-time status of output voltage and current, fuel gauge-type display of the battery life, output time in seconds, unit temperature and waveform settings.
Output Controls
The rotary Output Frequency switch controls the frequency (pulses per second) of the LR-20 in 5 and 10 hertz increments. The Duty Cycle switch controls the percentage of time the output pulse is on. It also allows switching to straight DC or gated bursts of either 2 or 3 pulses. The timer reset button resets the number of seconds the output of the LR-20 has been active.
Safety
Operator safety is a primary concern in the design of Smith-Root electrofishers. Tilt sensor, water immersion sensor, and cover open sensor will automatically shutdown the electrofisher. A power output audio alarm and flashing light let all members of the collection crew know the electrofisher is active.
Packframe and Suspension Harness
Adjustable suspension harness and packframe can be customized to fit most people. Quick release latches allow the LR-20B to be removed quickly if the operator falls or becomes injured.
Compatibility
The LR-20B uses the same electrode, cathode, and battery connectors as the LR-24. This will increase your flexibility in large field operations and increases the versatility of your inventory of electrofishers.
Technical Specifications
| Conductivity Range | 10 to 1950 µS/cm |
| Output Power | 2600W |
| Output Voltage | 50 to 990V in 11 steps (50 to 400V in 50V steps, 500V, 700V, 990V) |
| Output Frequency | 10 to 120Hz in 16 steps (10 to 50Hz in 5Hz steps, 60 to 120Hz in 10Hz steps) |
| Duty Cycle | 5 to 50% in 5% steps, 60 to 80% in 10% steps, Gated Burst 2 pulse, Gated Burst 3 pulse, DC |
| Overload Protection | Automatic electronic and 40A safety fuse, High output current, Output voltage out of regulation, Over temperature |
| Safety Features | Emergency shut off switch, Output active super-high brightness red LED, Output active audio alarm, Output off immersion sensor, Output off tilt sensor, High output current protection, Pole mounted output control switch, Electrode out-of-water shut down sensor, Non-conductive lightweight pack frame, Quick release harness |
| Timer | 6 digit computer controlled seconds counter |
| Metering | Mean current, Peak output voltage, Average output power, Battery voltage, Battery current, Battery fuel gauge, Timer |
| Electrodes | Telescoping pole, 6 ft. 2-piece pole, 6 ft. 1-piece pole; 6 in., 11 in., 18 in. aluminum ring, 11 in. stainless steel ring; stainless steel trailing cathode |
| Battery | Choice of 24V sealed 2.2Ah, 7Ah or 12Ah lead-acid or 9.6Ah lightweight lithium-iron. |
| Size and Weight | Height: 29.75 in.; Width: 13.75 in.; Depth: 13 in.; Weight: 24.5 lb. with 7Ah battery |
| Specifications subject to change without notice. | |
Caution
Only use approved Smith-Root batteries. Failure to do so can damage your electrofisher and void the warranty.
Accessories
- Battery Packs
- Battery Chargers
- Electrode Poles
- Electrodes
- Cathodes
- Carry Case
All available from the Smith-Root Store and from Authorized Resellers.