255-100 CAMPBELL | Alldatasheet
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5] SCIENTIFIC WHEN MEASUREMENTS MATTER Overview The 255-100, manufactured by Novalynx, determines evaporation rate by measuring the changing water level in your evaporation pan. The evaporation gauge produces a resistance output that Campbell Scientific data loggers can Benefits and Features ) Compatible with most Campbell Scientific data loggers T e o (o= 255-100 Analogue Output Evaporation Gauge Reliable in Harsh Environments monitor. The 255-200 or another standard National Weather Service Class A evaporation pan must be purchased separately. ) Low-power device for reading the water level of an evaporation pan such as the 255-200 Technical Description The 255-100 consists of a float, pulley, and counterweight attached to a precision 1000-ohm potentiometer mounted through a gear assembly in a weatherproof housing. It has a triangular base plate equipped with three leveling screws and a bubble level. The potentiometer produces a resistance output proportional to the position of the float, which can be monitored on site using a data logger or monitored remotely by telemetry equipment. Specifications Water Input Port Counter Weight Total Resolution Potentiometer Accuracy Rotation 1/2-in. NPT coupling, female 114 g (4 07) stainless steel 076 mm (0.03in) 025% 360° continuous For comprehensive details, visit: www.campbellsci.eu/novalynx255-100 The 255-100 can be placed directly in the pan, or connected to the pan using the 255-100P/F stainless-steel pipe and fittings. Instead of using the 255-100P/F, a 1/2-in. polybraid (fiber reinforced) flexible tubing, nylon fittings (1/2-in. NPT x Hose Bar), and small stainless-steel hose clamps can be used; this equipment is available from a local hardware store. Electrical Angle 340°,+1°(20° gap) Resistance 1,000 ohm, +10% Operating Temperature -40°to +60°C Range Evaporation is normally not measured at temperatures below freezing.
Linearity 0.25% Diameter 203 mm (8in) Mechanical Range 0to254mm(0to 10in) Height 700mm (27.5in) Electrical Range 0to240mm (0to 944in) Base Dimensions 406 cm (161in) triangle with Float 10.2cm (4in.) diameter, plastic leveling screws Cable Description 3-conductor, 24 AWG, shielded Weight 34kg(7510) Cable Length 15m G0 Shipping Weight 6.8kg (15 1b) For comprehensive details, visit: www.campbellsci.eu/novalynx255-100 CAMPBELL 80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | sale@campbellsci.couk | www.campbellsci.eu SCIENTIFIC AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | INDIA | SOUTH AFRICA | SPAIN | THAILAND | UK | USA ©2019 Campbell Scientific, Ltd. | 12/12/2019