The device used for velocity measurement of water in river or streams
1 point
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Piezometer
Cup Type Current Meter
PH Meter
Conductivity Meter
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Answer:
One of the most vital resources to our planet is water. With an ever rising population, it is essential that we monitor water quality in the environment so that we can detect changes and take action as needed.
This post will discuss key water quality measurements and how to calibrate in the field for the best results.
What is water quality?
Water quality is a measure of water's suitability to be used for a specific purpose, such as swimming, farming, or power generation. Water that is considered unsuitable for one application may be perfectly acceptable for another purpose. Quality is a statement of the physical, biological, and chemical characteristics of water based on key conditions. These conditions can vary by location, such as at different points in a river or by time depending on the climate. Surface water and ground water can also affect the quality of each other, since these two are connected at the water table. It is important to recognize that water quality can be adversely impacted by both natural and man-made factors. Regularly monitoring water sources can help identify potential issues before they cause serious harm.
Calibrating in the Field
Calibration is an essential step to getting accurate and repeatable results. Ideally, you should calibrate your testing equipment prior to use on the day of sampling. A post calibration check at the end of the day can be performed to determine if the instrument drifted out of calibration. Depending on the nature of your project, you may need to perform more frequent calibration checks throughout the day in addition to the check at the end of the day. Remember to only use fresh standards and clean probes as debris could adversely affect your results.
What are key water quality testing parameters?
There are a number of parameters that can be measured to indicate water quality. These parameters can be a measure of physical characteristics such as pH, conductivity, or temperature; a statement of the levels of various nutrients in water, such as nitrates and phosphates; or an indication of key elements and compounds in water, such as dissolved oxygen. Each parameter has some general standards and guidelines for determining if a tested sample should be considered acceptable or hazardous. The results of these tests are not necessarily absolute, since they must be compared in relation to what is considered normal levels for a body of water.
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