USGS-OWQ: TM1-D3 Monitor Operation: Operation and Maintenance Procedures for Continuous Water-Quality Monitors
|
Official Method Name
|
Monitor Operation and Maintenance, in Guidelines and Standard Procedures for Continuous Water-Quality Monitors: Operation, Record Computation, and Data |
|---|---|
|
Current Revision
| 2006 |
|
Media
|
WATER |
|
Instrumentation
|
Multiprobe sonde |
|
Method Subcategory
|
Inorganic |
|
Method Source
|
|
|
Citation
|
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 |
|
Protocol
|
USGS TM1-D3 - USGS Protocols for continuous water-quality monitors |
|
Brief Method Summary
|
The operational goal for monitoring water quality is to obtain the most accurate and most complete record possible. The general operational categories include maintenance of the monitoring station and equipment, periodic verification of sensor calibration, troubleshooting of sensors and recording equipment, and thorough record keeping. A standard protocol is common for the operation of continuous water-quality monitors in nearly all aquatic environments and site characteristics; only the cleaning and calibration steps (steps 3–5 in table 4) differ for determining error as a result of fouling and calibration drift. The standard protocol supports two methods for cleaning and calibration: (1) a method for monitors in well-mixed, stable, or slowly changing aquatic environments; and (2) a method for monitors in stratified or dynamic, rapidly changing conditions, such as those typically found in estuarine environments or in warm, |
|
Scope and Application
|
This section of USGS TM1-D3 report provides basic guidelines and procedures for use by U.S. Geological Survey (USGS) personnel for the operation and maintenance of continuous water-quality monitors, including cleaning and calibrating sensors in the field. Instructions are given for pH, specific conductance, dissolved oxygen, temperature, and turbidity sensors. |
|
Applicable Concentration Range
|
|
|
Interferences
|
|
|
Quality Control Requirements
|
|
|
Sample Handling
|
|
|
Maximum Holding Time
|
|
|
Relative Cost
|
Less than $50 |
|
Sample Preparation Methods
|
