The 255-100 determines evaporation rate by measuring the changing water level in an evaporation pan. This evaporation gauge consists of a float, pulley, and counterweight attached to a precision 1000-ohm potentiometer mounted through a gear assembly in a weatherproof housing. The 255-200 or another standard National Weather Service Class A Evaporation Pan is required.

Features

System Accuracy: Evaporation gauge with pan and pipes ±0.25 percent over 10" range
Low-power option for reading the water level of an evaporation pan

Specifications

Potentiometer Accuracy: 0.25%
Rotation: 360° continuous
Electrical angle: 340°, ±1° (20° gap)
Resistance: 1,000 ohms, ±10%
Linearity: 0.25%
Mechanical Range: 0 to 10 in (0 to 254 mm)
Electrical range: 0 to 9.44 in (0 to 240 mm)

Producing Area:USA