The GPS AquaPlus is the only Optical DO system that measures and compensates for salinity automatically, unlike other optical DO systems that require a salinity measurement value to be entered manually.
The system offers a choice of 2 hand held AquaPlus meters with probe which enables the simultaneous measurement and logging of parameters including: Temperature, Electrical Conductivity and DO - and a fully functional GPS!
The Technology behind the GPS Aquaplus
The AquaPlus™ works on the principle of Dynamic Luminescence Quenching. A gas-permeable material known as a luminophore is excited with short bursts of blue light, which causes molecules in the luminophore to emit red photons. By measuring the delay of the returned red photons with respect to the blue excitation, the level of dissolved oxygen present can be determined.
Housed in a resin filled, aluminium body that measures just 8mm (0.3”) diameter by 13mm (0.5”) long, the fully waterproof AquaPlus™ SensorModule contains blue excitation and red reference LEDs, optical filters, a photon detector, temperature sensor, driver circuitry and high gain amplification circuitry.
The incredibly small Sensor Module fits comfortably into the end of a standard 12mm diameter electrode leaving ample space for the inclusion of a four-ring EC cell. The EC cell allows direct salinity measurement, which is essential for accurate DO calculation. The addition of a replaceable cap containing a lens coated with the luminophore material completes the AquaPlus™ electrode.
Designed for Field Applications
This is a sophisticated, yet easy to use water quality instrument purpose designed for field use. Its so easy and intuitive to use that we are certain you’ll be comfortable operating the GPS AquaPlus™ within seconds of switch-on.
Developed and manufactured in the UK by an award-winning team of scientists and engineers using the highest design standards derived from the avionic industry, the GPS AquaPlus™ meter is a breakthrough in ergonomic and operating system design. With the GPS AquaPlus™ meter and its associated AquaPlus probe, it is now possible for anyone to obtain fast, reliable, accurate and dependable DO water quality readings in the field.
Also available are a wide range of accessories, including a robust flow through cell for low flow groundwater sampling, probe extension cables, calibration solutions and purpose designed field cases.
The GPS AquaPlus™ offers a choice of 2 meters for use with the AquaPlus™ Probe. Choose accessories including flow through cell, field case, extension cables and solutions.
GPS Aquameter
GPS Aquaplus Optical DO
GPS Aquaplus - Optical DO / EC / GPS Meter
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