Introduction to Sensor
The 255-100 Evaporation Gauge, manufactured by Novalynx, accurately measures evaporation by monitoring changes in water level within an evaporation pan. The sensor provides a resistance output that can be easily recorded by Campbell Scientific data loggers for precise data collection. Note that a standard NWS Class A evaporation pan (such as the 255-200) must be purchased separately for use with this gauge.
Specifications
Specifications
| Water Input Port | 1/2-in. NPT coupling, female |
| Counter Weight | 114 g (4 oz) stainless steel |
| Total Resolution | 0.76 mm (0.03 in.) |
| Potentiometer Accuracy | 0.25% |
| Rotation | 360° continuous |
| Electrical Angle | 340°, ±1° (20° gap) |
| Resistance | 1,000 ohm, ±10% |
| Operating Temperature Range | -40° to +60°C Evaporation is normally not measured at temperatures below freezing. |
| Linearity | 0.25% |
| Mechanical Range | 0 to 254 mm (0 to 10 in.) |
| Electrical Range | 0 to 240 mm (0 to 9.44 in.) |
| Float | 10.2 cm (4 in.) diameter, plastic |
| Cable Description | 3-conductor, 24 AWG, shielded |
| Cable Length | 15 m (50 ft) |
| Diameter | 203 mm (8 in.) |
| Height | 700 mm (27.5 in.) |
| Base Dimensions | 40.6 cm (16 in.) triangle with leveling screws |
| Weight | 3.4 kg (7.5 lb) |
| Shipping Weight | 6.8 kg (15 lb) |
Features
Applications
Agricultural Irrigation Planning
Climate Monitoring and Weather Station
Environmental and Hydrological Research
Water Resource Monitoring Program
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