Dissolved oxygen (DO) sensors and probes detect levels of dissolved oxygen in liquids, typically water, usually for biological measurements and for industrial process applications. Readouts will usually display dissolved oxygen concentration in either parts per million or milligrams per liter.
Another type of readout involves comparing a calculation of the maximum dissolved oxygen concentration with the actual concentration, expressed as a percentage. The variables that affect the maximum concentration are the atmospheric pressure just above the liquid, the temperature of the liquid, and the presence of other substances in the liquid.
Here are a few different types of dissolved oxygen sensors:
1. Galvanic dissolved oxygen sensors employ electrodes and remain stable and accurate even at low dissolved oxygen concentrations. Another benefit is that they do not require frequent replacement of electrolyte fluid.
2. Polarographic dissolved oxygen sensors also employ electrodes, but require the addition of an external voltage input and relatively frequent replacement of electrolyte fluid.
3. A optical dissolved oxygen sensor does not use electrolyte fluid at all, but an optode instead. In this case, an optical cable detects a film that reacts to dissolved oxygen with fluorescence.
Shop dissolved oxygen sensor suppliers that also carry accessoriesVarious types of dissolved oxygen sensor instruments require different supplies to keep them operating. Especially if you intend to put your dissolved oxygen sensor equipment to heavy use, shop DO sensor sources that also carry the supplies.
Locate industrial dissolved oxygen sensors that suit your needsControlling dissolved oxygen levels in industrial processes helps optimize efficiency of production and quality of product. Chemical reactions often require the control of oxygen levels. Some dissolved oxygen sensor manufacturers specialize in this type of equipment.
Buy a quality optical dissolved oxygen sensorSometimes divers and biologists prefer the newer optical technology which requires relatively less care. Some conventional sensors have more variables due to changes in the electrolyte fluid during heavy use. Also, optical sensors often work better in stagnant water.
- If you have a fish farm, get a dissolved oxygen sensor to help optimize the respiration and growth of your fish.