Overview
6529-3 Automatic Evaporation System is designed to operate for long periods without maintenance. It automatically refills and discharges water from the evaporation pan.
The 6529-3 operates an evaporation pan and records evaporation and rainfall data. The instrument is normally supplied as a complete package with a US Class A evaporation pan and all installation fittings. Still, it can be connected to any other type of pan.
The 6529-3 system is designed to operate for long periods without maintenance. The water level instrument and data logger operate for one year from internal batteries and water level control system, refill and discharge of water from the evaporation pan, is solar-powered. The water supply to refill the evaporation pan is provided by the user from a tank or a reticulated water supply pipe. Rainfall removed from the pan can be recycled if required.
The datalogger included with the unit is fully programmable and has all the STARLOG features. Some of these are event and time interval recording, programmable measurement and recording intervals, signal processing such as average, max, min and computations, including flow conversions and rating tables.
A water temperature sensor and a range of weather sensors can be added to the system to identify the relationship between pan evaporation and site conditions. These are required for evaporation and evapotranspiration studies and modelling.
Unidata Neon Remote Logger can come with cellule modem that uses cellular communication links to transmit the logged data to a central Neon server, and the data can be then viewed on a standard web browser, in near real-time.
Specifications

6529-1
- Range: 0mm to 250mm
- Resolution: 0.5mm
- Pan Type: ID 1208mm, OD 1290mm, Depth 250mm – US Class A compatible
- Pan Mounting: Pine frame 1300mm x 1300mm ISPM 15 Treated IPPC
- Pan Bird Guard: 12mm square steel mesh
- Weight: 31kg (including pallet)
6529-3
- Material Enclosure: Powder-coated aluminium
- Size: 320mm x 300mm x 750mm (LxWxH)
- Material Pan: Fiberglass
- Size: 1208 ID, OD 1290mm x 250mm deep – US Class A compatible
- Material Bird Guard: Stainless steel mesh
- Size: Dia 1215mm x 210mm deep
- Material Pan Mounting: ISPM Treated Pine (IPPC 81gn)
- Size: 1300mm x 1300mm x 105mm (LxWxH)
- Weight: ~60kg net
- Operating temperature: -20°C to 60°C
- Range: 30mm to 250mm. Pan empty to full
- Resolution: 0.2mm of evaporation or rainfall
- Accuracy: ± 0.4mm
- Solenoid: 0-1000kPa 12V
- Level Reset: Programmable. Default reset to 200mm (± 1mm) at a preset time each day
- Water Level: 6541 Water Level Instrument with 3004N NRL
- Power Supply: 0.3Ah/day
- Battery: Model 6907B 12V, 7Ah sealed lead acid
- Solar Panel: Model 6904I-10 12V, 10W solar panel