Aquaplus Optical Dissolved Oxygen / Conductivity and temperature meter
Optical Dissolved Oxygen / Conductivity meter
Suitable for handheld water quality measurement
Price includes -
♦ GPS Aquameter
♦ Aquaprobe Aquaplus Probe, 3m cable
♦ Sensors for measurement of Dissolved Oxygen (optical), conductivity and temperature
♦ Hard Case and Accessories
The Aquaplus is a handheld meter designed for the measurement of dissolved oxygen, conductivity and temperature. the probe utilises a optical sensor for improved stability and measurement performance. An additonal conductivity sensor also allows for compensation of the dissolved oxygen measurement due to changes in salinity. When combined with the Aquameter, the user is able to mark measurement points with GPS coordinates.
Advanced Optical DO
The Optical Dissolved Oxygen Sensor works using the principle of dynamic luminescence quenching. In essence a gas permeable material, called a luminophore is excited by short bursts of blue light, in turn these cause molecules in the luminophore to emit red photons. By measuring this delay we are the level of dissolved oxygen can calculated.
This technique has many advantages over the traditional galvanic method. The most important is that no oxygen is consumed during measurement. This means that the optical sensor does not require a flow to ensure a stable reading. Added advantages include reduced calibration frequency (3 - 6 months) and a replaceable cap which lasts over 2 years.