ASTM D3864-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D3864 − 06
StandardGuide for
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Continual On-Line Monitoring Systems for Water Analysis
This standard is issued under the fixed designation D3864; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 ASTM Special Technical Publication:
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STP 442 Manual on Water
1.1 This guide covers the selection, establishment,
application, and validation and verification of monitoring
3. Terminology
systems for determining water characteristics by continual
3.1 Definitions—For definitions of terms used in this guide
sampling, automatic analysis, and recording or otherwise
refer to Terminology D1129.
signalingofoutputdata.Thesystemchosenwilldependonthe
3.2 Definitions of Terms Specific to This Standard:
purpose for which it is intended: whether it is for regulatory
3.2.1 Calibrations:
compliance, process monitoring, or to alert the user of adverse
3.2.1.1 laboratory check sample for flow-through systems—
trends.Ifitistobeusedforregulatorycompliance,themethod
calibration curve calculated from withdrawn samples or addi-
published or referenced in the regulations should be used in
tional standards that may be spiked or diluted and analyzed
conjunction with this guide and other ASTM methods.
using the appropriate laboratory analyzer.
1.2 This standard does not purport to address all of the
3.2.1.2 line sample calibration—coincidental comparison
safety concerns, if any, associated with its use. It is the
ofalinesampleandadjustmentofacontinuousanalyzertothe
responsibility of the user of this standard to establish appro-
comparedlaboratoryanalyzerorasecondcontinuousanalyzer.
priate safety and health practices and determine the applica-
3.2.1.3 multiple standard calibration —where the calibra-
bility of regulatory limitations prior to use. Specific hazard tion curve is calculated from a series of calibration standards
statements are given in Section 7. covering the range of the measurements of the sample being
analyzed.
3.2.1.4 probe calibration—where the probe is removed
2. Referenced Documents
from the sample stream and exposed to a calibration solution
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2.1 ASTM Standards:
and the analyzer is adjusted to indicate the appropriate value.
D1129Terminology Relating to Water
Alternately, two probes are exposed to the same solution and
D1193Specification for Reagent Water
the on-line analyzer is adjusted to coincide with the pre-
D3370Practices for Sampling Water from Closed Conduits
calibrated laboratory instrument.
D4210Practice for Intralaboratory Quality Control Proce-
3.2.1.5 reference sample calibration —coincidental com-
dures and a Discussion on Reporting Low-Level Data
parison of a reference sample and adjustment of a continuous
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(Withdrawn 2002)
analyzer to the compared laboratory analyzer results.
D5540Practice for Flow Control and Temperature Control
3.2.2 cycle time—the interval between repetitive sample
for On-Line Water Sampling and Analysis introductions in a monitoring system with discrete sampling.
E178Practice for Dealing With Outlying Observations
3.2.3 drift—thechangeinsystemoutput,withconstantinput
over a stated time period of unadjusted, continuous operation;
usually expressed as percentage of full scale over a 24-h
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period.
This guide is under the jurisdiction ofASTM Committee D19 on Water and is
the direct responsibility of Subcommittee D19.03 on Sampling Water and Water-
3.2.3.1 span drift—drift when the input is at a constant,
Formed Deposits, Analysis of Water for Power Generation and Process Use,
stated upscale value.
On-Line Water Analysis, and Surveillance of Water.
CurrenteditionapprovedJuly1,2006.PublishedJuly2006.Originallyapproved
3.2.3.2 zero drift—drift when the input is at zero.
in 1979. Last previous edition approved in 2000 as D3864–96 (2000). DOI:
10.1520/D3864-06. 3.2.4 full scale—the maximum measuring limit of the sys-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tem for a given range.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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The last approved version of this historical standard is referenced on Available from ASTM Headquarters. Contact Customer Service, 100 Barr
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D3864 − 06
3.2.5 input—the value of the parameter being measured at 3.2.17.1 linesample—aprocesssamplewithdrawnfrom
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