YSI 2003 Polarographic Dissolved Oxygen Sensor
- Dissolved oxygen sensor for the YSI Pro Series handheld meters
- Easily inserts into the probe module and cable assembly
- Compatible with YSI 5906, 5908, or 5909 screw-on cap membranes
|605203||2003 polarographic DO sensor with yellow 1.25 mil PE membrane kit, Pro Series|
|605306||5908 PE yellow 1.25 mil cap membrane kit, 550A, DO200, 559 & 2003 polarographic sensors|
The YSI 2003 is designed for use with the Pro20, Pro20i, Pro1020, Pro2030, and Pro Plus instruments; cables must be ordered separately. It can be used on 60520 (DO), 6052030 (DO/conductivity), 6051020 (DO/ISE), and 605790 Quatro (DO/conductivity/ISE/ISE) cables.
The YSI 2003 comes with six membrane caps and bottle of solution.
- 1-year warranty
- (1) YSI 2003 DO module
- (1) 5908 cap membrane kit
- (1) Instruction sheet
- (1) Hex wrench
- (1) Set screw
In a polarographic sensor, the cathode is gold and the anode is silver. The system is completed by a circuit in the instrument that applies a constant voltage of 0.8 volts to the probe, which polarizes the two electrodes. The sensor operates by detecting a change in this current caused by the variable pressure of oxygen while the potential is held constant at 0.8 V. The more oxygen passing through the membrane and being reduced at the cathode, the greater the signal increases.
Galvanic sensors continually consume the anode, even when the instrument is off. The consumption of the polarographic sensor stops when the instrument is turned off, giving it a longer sensor life.
Yes, the proven technology of the steady-state sensor is approved by the US EPA for compliance monitoring and reporting.
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Beachgoers were disturbed by the large-scale kill, but experts explained that conditions this year were to blame. With higher temperatures and low dissolved oxygen near the sea floor, creatures that live there were more likely to be affected.
The fish kill, beginning July 1, was the first of 2013 for the area. It was expected to last several more days, but lessen over that period.Read More
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Decades of industrial pollution and nutrient runoff have degraded water quality and eliminated public swimming in the Lower Charles, but a movement is afoot to get Boston and Cambridge back in the water. One step toward the goal of a safely swimmable river—without the need to obtain a permit, as is now necessary—is detecting and managing the harmful algal blooms that appear on the river.
An experimental floating wetland and new research and analysis of water quality data that shows a possible effective detection system for algal blooms on the Charles River are two new steps toward the goal of safe, accessible swimming.Read More
The Gulf Stream, the massive western boundary current off the east coast of North America, moves water from the Gulf of Mexico north and west across the Atlantic Ocean. There’s a lot of energy in that much moving water and researchers are trying to put it to use.
Although the Gulf Stream’s path shifts (researchers say it acts like a wiggling garden hose), in a couple of spots, it stays relatively stable. At one such spot off the coast of Cape Hatteras, North Carolina, researchers have dropped moorings and research instruments to study the current with the eventual goal of harnessing it for renewable energy.Read More