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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: F2046 – 00 (Reapproved 2006)
Standard Specification for
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;
(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;
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;
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;
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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 and weight are limited. Size and weight
ASTM, ASME, or industry standards as specified.
limitations shall be specified in the acquisition requirements.
12.2 Test Data—All test data shall remain on file at the
manufacturer’sfacilityforreviewbythebuyeruponrequest.It
8. Performance Requirements
isrecommendedthattestdataberetainedinthemanufacturer’s
8.1 Service Life—Thebuyermayhaveaminimumspecified
filesforatleastthreeyearsoraperiodoftimeacceptabletothe
serviceliferequirement.Criticalserviceliferequirementsshall
buyer and manufacturer.
be specified in the acquisition requirements.
8.2 Tachometer Performance—Performance tolerances are
13. Quality Assurance Provisions
usually specified in percentage of range span. The following
13.1 Warranty:
performance characteristics and environmental exposures may
13.1.1 Responsibility for Warranty—Unless otherwise
or may not be important to each buyer’s intended application.
specified, the manufacturer is responsible for the following:
(1) Accuracy,
(1) All materials used to produce a unit and
(2) Repeatability,
(2) Manufacturer will warrant his product to be free from
(3) Damping,
defect of workmanship to produce the unit.
(4) Temperature,
(5) Humidity,
14. Certification
(6) Salt spray,
14.1 When specified in the purchase order or contract, the
(7) Vibration,
buyer shall be furnished certification that samples representing
(8) Shock, and
each lot have been either tested or inspected as directed in this
(9) Electromagnetic interference (EMI).
specification, and the requirements have been met. When
specified in the purchase order or contract, a report of the test
9. Workmanship, Finish, and Appearance
results shall be furnished.
9.1 Cleaning, Finish, and Appearance—Anyspecialclean-
ing, surface finish, and appearance requirements shall be
15. Product Marking
specified in the acquisition requirements.
15.1 User-specified product marking shall be listed in the
10. Inspection
acquisition requirements. The minimum data to be clearly
marked on each tachometer shall include the following:
10.1 Classification of Inspections—The inspection require-
(1) Manufacturer’s name,
ments specified herein are classified as follows:
(2) Manufacturer’s part number,
(1) Qualification testing and
(3) Serial number or lot number,
(2) Quality conformance testing.
(4) Date of manufacture, and
10.2 Qualification Testing—Qualification test requirements
(5) Range.
shall be specified, where applicable. Test methods should be
identified for each design and performance characteristic
16. Packaging and Package Marking
specified. Test report documentation requirements should also
16.1 Packaging of Product for Delivery—Product shall be
be specified.
packaged for shipment in accordance with Practice D3951.
10.3 Quality Conformance Testing—Quality conformance
16.2 Anyspecialpreservation,packaging,orpackagemark-
inspection is accomplished when acceptance and qualification
ing requirements for shipment or storage shall be identified in
testing is satisfied by a previous acquisition or when the
the acquisition requirements.
product has demonstrated reliability in similar applications.
Quality conformance inspection is usually less intensive than
17. Keywords
acceptance and qualification, often verifying that samples of a
production lot meet a few critical performance requirements. 17.1 tachometer
F2046 – 00 (2006)
SUPPLEMENTARY REQUIREMENTS
The following supplementary requirements established for U.S. Naval shipboard application shall
apply when specified in the contract or purchase order. When there is conflict between the standard
(Specification F2046) and this supplement, the requirements of this supplement shall take precedence
for equipment acquired by this supplement. This document supersedes MIL-T-16049C, Tachometers:
Electrical; Self-Generating; Mechanical, Fixed Mounting, and Hand Held; and Vibrating Reed, for
new ship construction. This document also supersedes MIL-T-24797, Tachometers, Fiber Optic,
(Naval Shipboard Use), (Metric) General Specification for, for new ship construction.
TACHOMETERS: ELECTRIC AND FIBER OPTIC, FIXED MOUNTING
S1. Scope S2.2.1 Military Specifications:
MS3452Connector, Receptacle, Electric, Box Mounting,
S1.1 This supplement covers single-range noncontact elec-
Rear Release, Crimp Contact, AN Type
tric and fiber-optic tachometers capable of generating, trans-
mitting, and indicating information or signal that can be MS3456Connector, Plug, Electrical, Rear Release, Crimp
converted into a function of rotational speed. The subject Contact, AN Type
tachometers may be used in shipboard systems, such as gas
MIL-C-5015Connectors, Electrical, Circular Threaded, AN
generators, power turbines, propulsion shafts, and gas steam
Type General Specification for
turbine generators.
MIL-M-24794Material, Index Matching, Fiber Optics
S1.2 Vibrating reed resonant-type tachometers are not cov-
MIL-F-49291Fiber, Optical, (Metric), General Specifica-
ered in this specification.
tions for
S1.3 The values stated in SI units are to be regarded as the
MIL-C-83522Connectors, Fiber Optic, Single Terminus,
standard. The values given in parentheses are for information
General Specification for
only.
MIL-C-83522/16Connector, Fiber Optic, Single Terminus,
S2. Referenced Documents Plug, Adapter Style, 2.5 mm Bayonet Coupling, Epoxy
MIL-C-83522/17Connector, Fiber Optic, Single Terminus,
S2.1 Commercial Documents:
Adapter, 2.5 mm Bayonet Coupling, Bulkhead Panel Mount
S2.1.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus MIL-C-83522/18Connector Fiber Optic, Single Terminus,
D3951 Practice for Commercial Packaging Adapter, 2.5 mm Bayonet Coupling, PC Mount
S2.1.2 ANSI/ISA Standards:
MIL-C-85045Cables, Fiber Optic, (Metric), General Speci-
ANSI/ISAS37.1 (R-1982)Electrical Transducer Nomencla-
fication for
ture and Terminology
MIL-S-901Shock Tests, H.I. (High Impact), Shipboard
ANSI/ASQC Q9001-1994 Quality Systems—Model for
Machinery, Equipment, and Systems, Requirements for
QualityAssuranceinDesign,Development,Production,Instal-
lation, Inspection, Testing, and Servicing
S3. Terminology
S2.1.3 Electronic Industries Association (EIA):
S3.1 Definitions—Terms marked with (ANSI/ISA S37.1)
RS-422Electrical Characteristics of Balanced Voltage Digi-
4 are taken directly from ANSI/ISA S37.1 (R-1982) and are
tal Interface Circuit
included for the convenience of the reader.
455-22 FOTP-22Ambient Light Susceptibility of Fiber
S3.1.1 ambient conditions—conditions, such as pressure
Optic Components
and temperature, of the medium surrounding the case of a
455-34 FOTP-34Interconnection Device Insertion Loss
sensor (ANSI/ISA S37.1).
Test
S2.2 Government Documents: S3.1.2 calibration—test during which known values of
S2.2.1 Military Standards: measurandsareappliedtothesensorandcorrespondingoutput
MIL-STD-461Electromagnetic Interference Characteristics readings are recorded under specific conditions (ANSI/ISA
of Subsystems and Equipment, Requirements for the Control S37.1).
of
S3.1.3 environmental conditions—specified external condi-
MIL-STD-167-1 Mechanical Vibrations of Shipboard
tions, such as shock, vibration, and temperature, to which a
Equipment (Type I—Environmental and Type II—Internally
sensormaybeexposedduringshipping,storage,handling,and
Excited)
operation (ANSI/ISA S37.1).
S3.1.4 error—the error for a given value of the input
variable (measurand) is the difference between the measured
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036.
value of the output signal and the expected value of the output
Available from Electronics IndustriesAssociation, 2500 Wilson Blvd.,Arling-
signal.Theexpectedvalueoftheoutputsignalforanyvalueof
ton, VA 22201.
themeasurandshallberepresentedbyastraightlinewhoseend
AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Robbins Ave., Philadelphia, PA 19111–5094, Attn: NPODS. points are given by:
F2046 – 00 (2006)
S3.1.4.1 The specified value of the output signal at the S3.1.22 warm-up time—the time required for a sensor to
minimum input value of the measurand (for example, 4 mAat operate within specified accuracy, repeatability, and other
the minimum specified rotational speed). critical parameters after being energized from a cold (ambient)
state.
S3.1.4.2 The specified value of the output signal at the
maximum input value of the measurand (for example, 20 mA
S4. Design Classification
at the maximum specified rotational speed).
S3.1.5 noncontact tachometer—anytypeoftachometerthat
S4.1 Electric Types:
sensesorrespondstorotationalspeedwithoutphysicalcontact
S4.1.1 Designation—Tachometers shall be classified by a
or mechanical connection to the shaft being measured.
series of designations which shall be assigned and listed in the
S3.1.6 operating environmental conditions—environmental
format following.
conditions during exposure to which a sensor must perform in
Example: F2046-20M-BK-A
some specified manner (ANSI/ISA S37.1).
F2046 20M BK A
S3.1.7 optical—involving the use of light-sensitive devices Specification Range Mounting Indicator
(see S4.1.2) (see S4.1.3) (see S4.1.4)
to acquire information.
S3.1.8 optical fiber—a very thin filament or fiber, made of
S4.1.2 Range—Electric tachometer ranges shall be selected
dielectricmaterials,thatisenclosedbymaterialoflowerindex
from the standard ranges listed in Table S4.1.
of refraction and transmits light throughout its length by
internal reflections. S4.1.3 Mounting—Tachometer indicators shall be either
bulkhead mounted (designator—BK) or panel (designator—
S3.1.9 optoelectronics module—a component of the fiber
PL) mounted.
optic tachometer that contains the optical source and detector,
S4.1.4 Indicator—Tachometer indicators shall be either
and signal conditioner devices necessary to convert the sensed
rotational speed to a specified output signal. analog (designator—
...
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