ASTM D3195/D3195M-10
(Practice)Standard Practice for Rotameter Calibration
Standard Practice for Rotameter Calibration
SIGNIFICANCE AND USE
Choice of method depends primarily on which equipment is available. Higher accuracy is possible with the gasometer. The accuracies of the methods of atmospheric analysis, for which the calibration procedure is intended, do not warrant the very highest possible accuracy in flow measurement.
SCOPE
1.1 This practice covers the calibration of variable-area flowmeters (rotameters) used to determine air sample volumes at or close to ambient conditions of pressure and temperature, in the analysis of atmospheres for pollutant content.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D3195/D3195M − 10
StandardPractice for
1
Rotameter Calibration
This standard is issued under the fixed designation D3195/D3195M; 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 3. Terminology
1.1 This practice covers the calibration of variable-area 3.1 Definitions:
3.1.1 For definitions of terms used in this practice, refer to
flowmeters (rotameters) used to determine air sample volumes
at or close to ambient conditions of pressure and temperature, Terminology D1356.
in the analysis of atmospheres for pollutant content. 3.1.2 Standard conditions are taken as 25°C [77°F] and
101.3 kPa (760 mm Hg) at existing ambient humidity. This
1.2 Units—The values stated in either SI units or inch-
conforms to most of the ASTM methods for atmospheric
pound units are to be regarded separately as standard. The
sampling and analysis that involve volumetric corrections.
values stated in each system may not be exact equivalents;
Absolute temperature scales are to be used when substituting
therefore,eachsystemshallbeusedindependentlyoftheother.
values into the formulae used in this procedure.
Combining values from the two systems may result in non-
conformance with the standard.
4. Summary of Practice
1.3 This standard does not purport to address all of the
4.1 Two alternative methods of performing the required
safety concerns, if any, associated with its use. It is the
volume determinations for rotameter calibration are described:
responsibility of the user of this standard to establish appro-
4.1.1 Using the water-sealed rotating drum meter (wet test
priate safety and health practices and determine the applica-
meter). See Section 7.
bility of regulatory limitations prior to use.
4.1.2 Using the volumetric gasometer (bell prover). See
Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
5. Significance and Use
D1071 Test Methods for Volumetric Measurement of Gas-
5.1 Choice of method depends primarily on which equip-
eous Fuel Samples
ment is available. Higher accuracy is possible with the gasom-
D1356 Terminology Relating to Sampling and Analysis of
eter.Theaccuraciesofthemethodsofatmosphericanalysis,for
Atmospheres
which the calibration procedure is intended, do not warrant the
D3631 Test Methods for Measuring Surface Atmospheric
very highest possible accuracy in flow measurement.
Pressure
E1 Specification for ASTM Liquid-in-Glass Thermometers
6. Apparatus
E337 Test Method for Measuring Humidity with a Psy-
chrometer (the Measurement of Wet- and Dry-Bulb Tem- 6.1 Wet Test Meter, or Volumetric Gasometer, with water
peratures) seal and equipped with a water manometer on the inlet.
E1137/E1137M Specification for Industrial Platinum Resis-
6.2 Counter Balance Weights, for gasometer.
tance Thermometers
6.3 Mercury Barometer—See Test Methods D3631.
E2251 Specification for Liquid-in-Glass ASTM Thermom-
eters with Low-Hazard Precision Liquids
6.4 Psychrometer, (if room air is used for calibration gas).
See Test Method E337.
6.5 Thermometer, to measure ambient temperature. See
1
This practice is under the jurisdiction of ASTM Committee D22 on Air
Specifications E1, E1137/E1137M, and E2251.
Qualityand is the direct responsibility of Subcommittee D22.01 on Quality Control.
Current edition approved June 15, 2010. Published July 2010. Originally 6.6 Stopwatch.
approved in 1973. Last previous edition approved in 2004 as D3195 - 90 (2004).
6.7 Air Supply, either a cylinder of compressed air or a
DOI: 10.1520/D3195-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or diaphragm type pump of adequate capacity and a ballast
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
volume or restrictor to eliminate pulsations.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.8 Needle Valve.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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---------------------- Page: 1 ----------------------
D3195/D3195M − 10
7. Procedure Using Wet Test Meter procedure of manufacturer specifications for testing, thus no
equivalent SI units given.)
7.1 Unless it was already calibrated within the previous
three months, calibrate the wet test meter by Test Methods
8.6 Take a pair of timed readings on the gasometer scale,
D1071. The method described in Section 19 is recommended under steady flow, for each of five or more uniformly spaced
for highest accuracy.
points on the rotameter scale going from low values to high
values. Repeat, going from high to low.
7.2 Set up the appar
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D3195– 90(Reapproved 2004) Designation:D3195/D3195M–10
Standard Practice for
1
Rotameter Calibration
This standard is issued under the fixed designation D3195/D3195M; 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
1.1 This practice covers the calibration of variable-area flowmeters (rotameters) used to determine air sample volumes at or
close to ambient conditions of pressure and temperature, in the analysis of atmospheres for pollutant content.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the standard.
1.3 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D1071 Test Methods for Volumetric Measurement of Gaseous Fuel Samples
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D3631 Test Methods for Measuring Surface Atmospheric Pressure
E1 Specification for ASTM Liquid-in-Glass Thermometers
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures) Test
Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
E1137/E1137M Specification for Industrial Platinum Resistance Thermometers
E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this practice, refer to Terminology D1356.
3.1.2 standardStandard conditions are taken as 25°C [77°F] and 101.3 kPa (760 mm Hg) at existing ambient humidity. This
conforms to most of the ASTM methods for atmospheric sampling and analysis that involve volumetric corrections. Absolute
temperature scales are to be used when substituting values into the formulae used in this procedure.
4. Summary of Practice
4.1 Two alternative methods of performing the required volume determinations for rotameter calibration are described:
4.1.1 Using the water-sealed rotating drum meter (wet test meter). See Section 7.
4.1.2 Using the volumetric gasometer (bell prover). See Section 8.
5. Significance and Use
5.1 Choice of method depends primarily on which equipment is available. Higher accuracy is possible with the gasometer. The
accuracies of the methods of atmospheric analysis, for which the calibration procedure is intended, do not warrant the very highest
possible accuracy in flow measurement.
1
ThispracticeisunderthejurisdictionofASTMCommitteeD22onSamplingandAnalysisofAtmospheresandisthedirectresponsibilityofSubcommitteeonAirQuality
and is the direct responsibility of Subcommittee D22.01 on Quality Control.
´1
Current edition approved October 1, 2004. Published December 2004. Originally approved in 1973. Last previous edition approved in 1998 as D3195-90(1998) . DOI:
10.1520/D3195-90R04.
Current edition approved June 15, 2010. Published July 2010. Originally approved in 1973. Last previous edition approved in 2004 as D3195 - 90 (2004). DOI:
10.1520/D3195-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D3195/D3195M–10
6. Apparatus
6.1 Wet Test Meter, or Volumetric Gasometer, with water seal and equipped with a water manometer on the inlet.
6.2 Counter Balance Weights, for gasometer.
6.3 Mercury Barometer—See Test Methods D3631.
6.4 Psychrometer, (if room air is used for calibration gas). See Test Method E337.
6.5 Thermometer, to measure ambient temperature. See Specifications E1, E1137/E1137M, and E2251.
6.6 Stopwatch.
6.7 Air Supply, either a cylinder of compressed air or a di
...
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