The EFP-2 Electric Field Probe allows fast, easy, accurate measurements of the electric fields in water produced by electrofishers. A front panel function -switch selects the units of measurement, either volts per inch or volts per centimeter. The readings drop with time at a rate of approximately 1 millivolt per second. Pressing the reset switch clears the old reading and prepares the unit to make a new reading. The probe is polarity-sensitive. It will only measure positive fields. If a negative field needs to be measured simply turn the probe 180 degrees.

Specifications:

Field Strength: 5V/in. or 1.97V/cm max. measurable
Frequency: 13kHz max.
Pulse Width: 75 microseconds max.
Reading Decay: rate <1 millivolt per second
Accuracy: ± 5%
Display: 3-digit 0.5" high LCD
Battery: 9V alkaline
Battery Life: 10 hours continuous
Cable Length: 15ft
Size Display Box (L x W x H): 6.6" x 3.2" x 2.25"
Size Probe Head (L x W x H): 3.38" x 1.38" x 3.2"
Weight Display Box: 9 ounces
Weight Probe Head: 1 pound