MODEL 3003 : Analog Output Evaporation Gauge

General Description:

The Model 3003 Analog Output Evaporation Gauge is used to determine the evaporation rate by measuring the changing water level in an evaporation pan. A standard Class A National Weather Service evaporation pan is recommended.

The instrument consists of a float, pulley, and counterweight attached to a precision 1000-ohm potentiometer mounted through a gear assembly in a weatherproof housing. The triangular base plate is equipped with three leveling screws. The potentiometer produces a resistance output proportional to the position of the float which can be monitored on site using a data logger or a strip chart recorder, or remotely using HydroLynx Data Transmitters.

MODEL 3003 : SPECIFICATIONS

Gauge

Height: 27½ in.

Diameter: 8 in.

Base Dimensions: 16 in. triangle with leveling screws

Float: 4 in. dia. Polystyrene

Cable and Connector: 3-pin ms connector

Total System Resolution: 0.0098 in. w/ 5096 Trans.

Potentiometer

Accuracy: 1%

Rotation: Continuous

Resistance: 1000 ohms

Operating temperatures: -40 to 60 °C

Linearity: 0.25%

Range: 0-10 in.

Water Input Port: ½ in. NP coupling, female

Weight: 7½ lbs.

Shipping Weight: 30 lbs.

3003
Evaporation Gauge

• 1000 Ohm Potentiometer
• 50 ft. Cable with MS Connector

3003P/F
Connecting Pipe and Fittings

• 10 in. Connecting Pipe
• Fittings for Attaching to Evaporation Pan