ASTM F2046-00(2006)
(Specification)Standard Specification for Tachometers, Various
Standard Specification for Tachometers, Various
ABSTRACT
This specification covers various tachometers capable of measuring rotational shaft speed. Special requirements for tachometer types used in naval shipboard applications. The materials for all parts shall be selected for long-term compatibility with the environment in which the tachometer will be installed or used. Qualification testing and quality conformance testing shall be performed.
SCOPE
1.1 This specification covers various tachometers capable of measuring rotational shaft speed.
1.2 Special requirements for tachometer types used in naval shipboard applications are included in Supplement S1.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: F2046 – 00 (Reapproved 2006)
Standard Specification for
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Tachometers, Various
This standard is issued under the fixed designation F2046; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope (4) Electrical, alternating current (ac) voltage responsive,
direct drive;
1.1 Thisspecificationcoversvarioustachometerscapableof
(5) Electrical reactance;
measuring rotational shaft speed.
(6) Electrical, magnetovoltmeter, direct drive;
1.2 Specialrequirementsfortachometertypesusedinnaval
(7) Electrical, magnetovoltmeter;
shipboard applications are included in Supplement S1.
(8) Frequency responsive, electrical control box and volt-
1.3 The values stated in SI units are to be regarded as the
meter, direct drive;
standard. The values given in parentheses are for information
(9) Frequency sensitive, electrical, nonrotating magnetic
only.
pickup, direct drive, consists of a magnetic pickup, transducer,
2. Referenced Documents and indicator;
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(10) Photoelectric;
2.1 ASTM Standards:
(11) Digital contact;
D3951 Practice for Commercial Packaging
(12) Centrifugal, flexible drive; and
3. Terminology
(13) Vibrating resonant reed.
3.1 Definitions:
5. Ordering Information
3.1.1 SI (Le Systeme International d’Unites) Units—unitsof
5.1 Thebuyershallprovidethemanufacturerwithallofthe
measurement recognized by the Comite’ International des
pertinent application data in accordance with the acquisition
Poids et Mesures (CIPM).
requirements, 5.2.
3.1.2 tachometer—an instrument capable of generating,
5.2 Acquisition Requirements—Acquisition documents
transmitting, and indicating information or signal that can be
shall specify the following:
convened into a function of rotational speed.
(1) Title, number, and date of this specification;
4. Classification
(2) Quantity of tachometers required;
(3) Range;
4.1 Design Types—The following are among the types of
(4) Manufacturer’s part number;
tachometers available:
(5) When qualification inspection is required;
(1) Centrifugal;
(6) Final disposition of qualification test samples;
(2) Centrifugal, flexible drive;
(7) Type of electrical connection;
(3) Chonometric;
(8) Mounting method;
(9) Environmental requirements;
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This specification is under the jurisdiction ofASTM Committee F25 on Ships
(10) Materials;
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
(11) Size and weight restrictions;
Electrical.
(12) Critical service life requirements;
Current edition approved Feb. 1, 2006. Published February 2006. Originally
(13) Performance requirements;
approved in 2000. Last previous edition approved in 2000 as F2046–00. DOI:
10.1520/F2046-00R06.
(14) Surface finish requirements;
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(15) Cleaning requirements;
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(16) When certification is required;
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (17) Marking requirements;
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F2046 – 00 (2006)
(18) Packaging requirements; and 11. Number of Tests and Retests
(19) Preservation requirements.
11.1 Test Specimens—The number of test specimens to be
subjected to qualification testing shall depend on the tachom-
6. Materials and Manufacture
eter design. If each range is covered by a separate and distinct
6.1 Material Selection—The materials for all parts shall be
design, a test specimen for each range will require testing. In
selected for long-term compatibility with the environment in
instances in which a singular design series may cover multiple
which the tachometer will be installed or used.
ranges and types, it is recommended that three test specimens
6.2 MaterialInspection—Themanufacturershallberespon-
betestedprovidedtheelectricalandmechanicalsimilaritiesare
sible for ensuring that materials used are manufactured, exam-
approved by the buyer. In no case, however, should less than
ined, and tested in accordance with the specifications and
three units, one unit each representing low, medium, and high
standards as applicable.
ranges, be tested, regardless of design similarity.
7. Physical Properties
12. Test Methods
7.1 Size and Weight—The buyer may have intended appli-
12.1 Tests—All tests shall be performed in accordance with
cations where size a
...
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