Evaporation Monitoring System

Evaporation Monitoring System

Model 6529-1 and 6529-3

The Evaporation Monitoring System measures how much water evaporates from a Class A evaporation pan by measuring the water level in an adjoining stillwell. The stillwell reduces fluctuations in the pan’s water level caused by wind.

The 6529-1 Manual Evaporation System comprises the following components:

  • 6529C Evaporation Pan
  • 6529D Bird and Leaf Cover
  • 6529M Manual Measurement Components

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

Unidata 6529 Evaporation Monitoring System

6529-1

6529-3

Ordering Information
Model
Description
6529-1
Evaporation Monitoring System
6529-3
Automatic Evaporation Recording System

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