Easy to Use
Simplified manual control knobs, streamlined settings allow adjustment over output frequency and duty cycle settings. All controls are housed inside of a non-conductive, waterproof enclosure with a shatter resistant hinged, latched cover. The easily accessible external anode, cathode, control plugs and battery connector make the connection of electrode devices and battery pack quick and simple.
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 1000 µS/cm |
| Output Voltage | 50 to 400V in 50V steps, 500V, 700V, 990V |
| Output Power | 400W continuous, 24,000W peak |
| Output Frequency | 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 | 25A circuit breaker and 40A safety fuse |
| Timer | 6 digit computer controlled seconds counter |
| Metering | Average output current, Average output power, Battery voltage, Battery current |
| Battery | Choice of 24V sealed, deep discharge batteries. 2.2Ah, 7Ah or 12Ah Caution: Only use approved Smith-Root batteries. Failure to do so can damage your electrofisher and void the warranty. |
| 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.