ASTM D6764-02(2019)
(Guide)Standard Guide for Collection of Water Temperature, Dissolved-Oxygen Concentrations, Specific Electrical Conductance, and pH Data from Open Channels
Standard Guide for Collection of Water Temperature, Dissolved-Oxygen Concentrations, Specific Electrical Conductance, and pH Data from Open Channels
SIGNIFICANCE AND USE
5.1 This guide describes stabilization criteria for recording field measurements of temperature, DO, SC, and pH.
5.2 This guide describes the procedures used to calibrate and check meters to be used in the field to records these measurements and the procedures to be use in the field to obtain these data.
5.3 This guide describes quality assurance procedures to be followed when obtaining cross-sectional means of temperature, DO, SC, and pH of water flowing in open channels.
5.4 Field measurement must accurately represent the water flowing in the open channel being measured. Methods need to be used that will result in an accurate representation of the mean of the parameter of interest. Procedures must be used that will take into consideration the variation in the parameter across the sections and with depth.
5.5 Temperature and DO must be measured directly in the water in the open channel. SC and pH are often measured in situ, but also may be measured in a subsample of a composite sample collected using discharge-weighted methods.
SCOPE
1.1 This guide describes procedures to collect cross-sectional means of temperature, dissolved oxygen (DO), specific electrical conductance (SC), and pH of water flowing in open channels.
1.2 This guide provides guidelines for preparation and calibration of the equipment to collect cross-sectional means of temperature, DO, SC, and pH of water flowing in open channels.
1.3 This guide describes what equipment should be used to collect cross-sectional means of temperature, DO, SC, and pH of water flowing in open channels.
1.4 This guide covers the cross-sectional means of temperature, DO, SC, and pH of fresh water flowing in open channels.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D6764 −02 (Reapproved 2019)
Standard Guide for
Collection of Water Temperature, Dissolved-Oxygen
Concentrations, Specific Electrical Conductance, and pH
1
Data from Open Channels
This standard is issued under the fixed designation D6764; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1125 Test Methods for Electrical Conductivity and Resis-
tivity of Water
1.1 This guide describes procedures to collect cross-
D1129 Terminology Relating to Water
sectional means of temperature, dissolved oxygen (DO), spe-
D1293 Test Methods for pH of Water
cific electrical conductance (SC), and pH of water flowing in
D4410 Terminology for Fluvial Sediment
open channels.
D4411 Guide for Sampling Fluvial Sediment in Motion
1.2 This guide provides guidelines for preparation and
D5464 Test Method for pH Measurement of Water of Low
calibrationoftheequipmenttocollectcross-sectionalmeansof
Conductivity
temperature, DO, SC, and pH of water flowing in open
3. Terminology
channels.
3.1 Definitions:
1.3 This guide describes what equipment should be used to
3.1.1 For definitions of terms used in this standard, refer to
collect cross-sectional means of temperature, DO, SC, and pH
Terminologies D1129 and D4410.
of water flowing in open channels.
3.2 Definitions of Terms Specific to This Standard:
1.4 This guide covers the cross-sectional means of
3.2.1 electronic temperature sensor, n—an electrical device
temperature, DO, SC, and pH of fresh water flowing in open
that converts changes in resistance to a readout calibrated in
channels.
temperature units. Thermistors and resistance temperature
1.5 This standard does not purport to address all of the
detectors are examples of electronic temperature sensors.
safety concerns, if any, associated with its use. It is the
3.2.2 thermometer, n—any device used to measure
responsibility of the user of this standard to establish appro-
temperature, consisting of a temperature sensor and some type
priate safety, health, and environmental practices and deter-
of calibrated scale or readout device.
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
4. Summary of Guide
dance with internationally recognized principles on standard-
4.1 This guide establishes criteria and describes procedures
ization established in the Decision on Principles for the
for the collection of cross-sectional means of temperature, DO,
Development of International Standards, Guides and Recom-
SC, and pH of water flowing in open channels.
mendations issued by the World Trade Organization Technical
4.2 This guide provides only generic guidelines for equip-
Barriers to Trade (TBT) Committee.
ment use and maintenance. Field personnel must be familiar
2. Referenced Documents with the instructions provided by equipment manufacturers.
2 Therearealargevarietyofavailablefieldinstrumentsandfield
2.1 ASTM Standards:
instruments are being continuously updated or replaced using
D888 Test Methods for Dissolved Oxygen in Water
newer technology. Field personnel are encouraged to contact
equipment manufacturers for answers to technical questions.
1
This guide is under the jurisdiction ofASTM Committee D19 on Water and is
5. Significance and Use
the direct responsibility of Subcommittee D19.07 on Sediments, Geomorphology,
and Open-Channel Flow.
5.1 This guide describes stabilization criteria for recording
Current edition approved Nov. 1, 2019. Published December 2019. Originally
field measurements of temperature, DO, SC, and pH.
approved in 2002. Last previous edition approved in 2013 as D6764 – 02 (2013).
DOI: 10.1520/D6764-02R19.
5.2 This guide describes the procedures used to calibrate
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and check meters to be used in the field to records these
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
measurements and the procedures to be use in the field to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. obtain these data.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6764−02 (2019)
5.3 This guide describes quality assurance procedures to be 6.1.1.4 Have backup instruments readily available and in
followedwhenobtainingcross-sectionalmeansoftemperat
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.