USGS-OWQ: TM1-D3 Monitor Selection: Monitor selection, configurations and sensors
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Official Method Name
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Monitor selection, configurations and sensors; in Guidelines and Standard Procedures for Continuous Water-Quality Monitors: Operation, Record Computation, and Data |
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Current Revision
| 2006 |
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Media
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WATER |
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Instrumentation
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Multiprobe sonde |
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Method Subcategory
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Inorganic |
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Method Source
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Citation
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Wagner, R.J., Boulger, R.W., Jr., Oblinger, C.J., and Smith, B.A., 2006, Guidelines and standard procedures for continuous water-quality monitors¿Station operation, record computation, and data reporting: U.S. Geological Survey Techniques and Methods 1¿D3, 51 p. + 8 attachments; accessed April 10, 2006, at http://pubs.water.usgs.gov/tm1d3 |
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Protocol
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USGS TM1-D3 - USGS Protocols for continuous water-quality monitors |
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Brief Method Summary
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The selection of a water-quality monitor involves four major interrelated elements—(1) the purpose of the data collection, (2) the type of installation, (3) the type of sensor deployed at the installation, and (4) the specific sensors needed to satisfy the accuracy and precision requirements of the data-quality objectives. Sensors are available as individual instruments or as a single combined instrument that has several different sensors in various combinations. For clarity in this report, a sensor is the fixed or detachable part of the instrument that measures a particular field parameter. A group of sensors configured together commonly is referred to as a sonde. A sonde typically has a single recording unit or electronic data logger to record the output of multiple sensors. The term monitor refers to the combination of sensor(s) and the recording unit or data logger. The most widely used water-quality sensors in monitoring installations are temperature, conductivity, DO, pH, and turbidity. These sensors are the focus of this report. |
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Scope and Application
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Sensors are available for continuous measurement of many field parameters and chemical constituents, but five of the most commonly used sensors are temperature, specific conductance, DO, pH, and turbidity. |
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Applicable Concentration Range
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Interferences
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Quality Control Requirements
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Sample Handling
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Maximum Holding Time
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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