ASTM F2046-00(2022)
(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 standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.4 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:F2046 −00 (Reapproved 2022) An American National Standard
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 U.S. Department of Defense.
1. Scope (1)Centrifugal;
(2)Centrifugal, flexible drive;
1.1 Thisspecificationcoversvarioustachometerscapableof
(3)Chonometric;
measuring rotational shaft speed.
(4)Electrical, alternating current (ac) voltage responsive,
1.2 Specialrequirementsfortachometertypesusedinnaval
direct drive;
shipboard applications are included in Supplement S1.
(5)Electrical reactance;
1.3 The values stated in SI units are to be regarded as (6)Electrical, magnetovoltmeter, direct drive;
(7)Electrical, magnetovoltmeter;
standard. The values given in parentheses are mathematical
conversions to inch-pound units that are provided for informa- (8) Frequency responsive, electrical control box and
voltmeter, direct drive;
tion only and are not considered standard.
(9)Frequency sensitive, electrical, nonrotating magnetic
1.4 This international standard was developed in accor-
pickup, direct drive, consists of a magnetic pickup, transducer,
dance with internationally recognized principles on standard-
and indicator;
ization established in the Decision on Principles for the
(10)Photoelectric;
Development of International Standards, Guides and Recom-
(11)Digital contact;
mendations issued by the World Trade Organization Technical
(12)Centrifugal, flexible drive; and
Barriers to Trade (TBT) Committee.
(13)Vibrating resonant reed.
2. Referenced Documents
5. Ordering Information
2.1 ASTM Standards:
5.1 Thebuyershallprovidethemanufacturerwithallofthe
D3951Practice for Commercial Packaging
pertinent application data in accordance with the acquisition
requirements, 5.2.
3. Terminology
5.2 Acquisition Requirements—Acquisitiondocumentsshall
3.1 Definitions:
specify the following:
3.1.1 SI (Le Systeme International d’Unites) Units, n—units
(1)Title, number, and date of this specification;
of measurement recognized by the Comite’ International des
(2)Quantity of tachometers required;
Poids et Mesures (CIPM).
(3)Range;
3.1.2 tachometer, n—an instrument capable of generating,
(4)Manufacturer’s part number;
transmitting, and indicating information or signal that can be
(5)When qualification inspection is required;
convened into a function of rotational speed.
(6)Final disposition of qualification test samples;
(7)Type of electrical connection;
4. Classification
(8)Mounting method;
4.1 Design Types—The following are among the types of
(9)Environmental requirements;
tachometers available:
(10)Materials;
(11)Size and weight restrictions;
This specification is under the jurisdiction ofASTM Committee F25 on Ships
(12)Critical service life requirements;
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
(13)Performance requirements;
Electrical.
(14)Surface finish requirements;
Current edition approved Oct. 1, 2022. Published October 2022. Originally
(15)Cleaning requirements;
approved in 2000. Last previous edition approved in 2017 as F2046–00 (2017).
DOI: 10.1520/F2046-00R22.
(16)When certification is required;
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(17)Marking requirements;
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(18)Packaging requirements; and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (19)Preservation requirements.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2046−00 (2022)
6. Materials and Manufacture 11. Number of Tests and Retests
11.1 Test Specimens—The number of test specimens to be
6.1 Material Selection—The materials for all parts shall be
subjected to qualification testing shall depend on the tachom-
selected for long-term compatibility with the environment in
eter design. If each range is covered by a separate and distinct
which the tachometer will be installed or used.
design, a test specimen for each range will require testing. In
6.2 Material Inspection—Themanufacturershallberespon-
instances in which a singular design series may cover multiple
sible for ensuring that materials used are manufactured,
ranges and types, it is recommended that three test specimens
examined, and tested in accordance with the specifications and
betestedprovidedtheelectricalandmechanicalsimilaritiesare
standards as applicable.
approved by the buyer. In no case, however, should less than
three units, one unit each representing low, medium, and high
7. Physical Properties
ranges, be tested, regardless of design similarity.
7.1 Size and Weight—The buyer may have intended appli-
12. Test Methods
cations where size and weight are limited. Size and weight
12.1 Tests—All tests shall be performed in accordance with
limitations shall be specified in the acquisition requirements.
ASTM, American Society of Mechanical Engineers (ASME),
or industry standards as specified.
8. Performance Requirements
12.2 Test Data—All test data shall remain on file at the
8.1 Service Life—Thebuyermayhaveaminimumspecified
manufacturer’sfacilityforreviewbythebuyeruponrequest.It
serviceliferequirement.Criticalserviceliferequirementsshall
isrecommendedthattestdataberetainedinthemanufacturer’s
be specified in the acquisition requirements.
filesforatleastthreeyearsoraperiodoftimeacceptabletothe
8.2 Tachometer Performance—Performance tolerances are
buyer and manufacturer.
usually specified in percentage of range span. The following
13. Quality Assurance Provisions
performance characteristics and environmental exposures may
or may not be important to each buyer’s intended application.
13.1 Warranty:
(1)Accuracy,
13.1.1 Responsibility for Warranty—Unless otherwise
(2)Repeatability,
specified, the manufacturer is responsible for the following:
(3)Damping,
(1)All materials used to produce a unit and
(4)Temperature,
(2)Manufacturer will warrant his product to be free from
(5)Humidity,
defect of workmanship to produce the unit.
(6)Salt spray,
(7)Vibration,
14. Certification
(8)Shock, and
14.1 When specified in the purchase order or contract, the
(9)Electromagnetic interference (EMI).
buyer shall be furnished certification that samples representing
each lot have been either tested or inspected as directed in this
9. Workmanship, Finish, and Appearance
specification, and the requirements have been met. When
specified in the purchase order or contract, a report of the test
9.1 Cleaning, Finish, and Appearance—Any special
results shall be furnished.
cleaning, surface finish, and appearance requirements shall be
specified in the acquisition requirements.
15. Product Marking
15.1 User-specified product marking shall be listed in the
10. Inspection
acquisition requirements. The minimum data to be clearly
10.1 Classification of Inspections—The inspection require-
marked on each tachometer shall include the following:
ments specified herein are classified as follows:
(1)Manufacturer’s name,
(1)Qualification testing, and
(2)Manufacturer’s part number,
(2)Quality conformance testing.
(3)Serial number or lot number,
(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
be specified. 16.1 Packaging of Product for Delivery—Product shall be
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 (2022)
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 this 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 Government Documents:
S2.2.1 Military Standards:
S1.1 This supplement covers single-range noncontact elec-
MIL-STD-461Electromagnetic Interference Characteristics
tric and fiber-optic tachometers capable of generating,
of Subsystems and Equipment, Requirements for the Control
transmitting, and indicating information or signal that can be
of
converted into a function of rotational speed. The subject
tachometers may be used in shipboard systems, such as gas MIL-STD-167-1 Mechanical Vibrations of Shipboard
generators, power turbines, propulsion shafts, and gas steam Equipment (Type I—Environmental and Type II—Internally
turbine generators.
Excited)
S1.2 Vibrating reed resonant-type tachometers are not cov-
S2.2.1 Military Specifications:
ered in this specification.
MS3452Connector, Receptacle, Electric, Box Mounting,
S1.3 The values stated in SI units are to be regarded as
Rear Release, Crimp Contact, AN Type
standard. The values given in parentheses are mathematical
MS3456Connector, Plug, Electrical, Rear Release, Crimp
conversions to inch-pound units that are provided for informa-
Contact, AN Type
tion only and are not considered standard.
MIL-C-5015Connectors, Electrical, Circular Threaded, AN
Type General Specification for
S2. Referenced Documents
MIL-M-24794Material, Index Matching, Fiber Optics
S2.1 Commercial Documents:
MIL-F-49291Fiber, Optical, (Metric), General Specifica-
S2.1.1 ASTM Standards:
tions for
B117 Practice for Operating Salt Spray (Fog) Apparatus
MIL-C-83522Connectors, Fiber Optic, Single Terminus,
D3951 Practice for Commercial Packaging
General Specification for
S2.1.2 ANSI/ISA Standards:
ANSI/ISAS37.1 (R-1982)Electrical Transducer Nomencla- MIL-C-83522/16Connector, Fiber Optic, Single Terminus,
ture and Terminology Plug, Adapter Style, 2.5 mm Bayonet Coupling, Epoxy
ANSI/ASQC Q9001-1994 Quality Systems—Model for
MIL-C-83522/17Connector, Fiber Optic, Single Terminus,
Quality Assurance in Design, Development, Production,
Adapter, 2.5 mm Bayonet Coupling, Bulkhead Panel Mount
Installation, Inspection, Testing, and Servicing
MIL-C-83522/18Connector Fiber Optic, Single Terminus,
S2.1.3 Electronic Industries Association (EIA) Standards:
Adapter, 2.5 mm Bayonet Coupling, PC Mount
RS-422Electrical Characteristics of Balanced Voltage Digi-
MIL-C-85045Cables, Fiber Optic, (Metric), General Speci-
tal Interface Circuit
fication for
455-22 FOTP-22Ambient Light Susceptibility of Fiber
MIL-S-901Shock Tests, H.I. (High Impact), Shipboard
Optic Components
Machinery, Equipment, and Systems, Requirements for
455-34FOTP-34InterconnectionDeviceInsertionLossTest
S3. Terminology
S3.1 Definitions—Terms marked with “ANSI/ISA S37.1”
are taken directly from ANSI/ISA S37.1 (R-1982) and are
included for the convenience of the reader.
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org.
4 5
Available from IHS Markit Ltd, https://www.ihs.com/products/eia- Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
standards.html. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
F2046−00 (2022)
S3.1.1 ambient conditions, n—conditions, such as pressure S3.1.14 sensor head, n—the transduction element of a fiber
and temperature, of the medium surrounding the case of a optic tachometer that detects rotational speed by means of
sensor. changes in optical properties.
ANSI/ISA S37.1 S3.1.15 sheath, n—the protective covering of a sensor
element.
S3.1.2 calibration, n—test during which known values of
S3.1.16 signal conditioner, n—an electronic device that
measurandsareappliedtothesensorandcorrespondingoutput
makes the output signal from a transduction element compat-
readings are recorded under specific conditions.
ible with a readout system.
ANSI/ISA S37.1
S3.1.17 span,n—thealgebraicdifferencebetweenthelimits
S3.1.3 environmental conditions, n—specified external
of the measurement range.
conditions,suchasshock,vibration,andtemperature,towhich
S3.1.18 static error band, n—the maximum deviation from
a sensor may be exposed during shipping, storage, handling,
astraightlinedrawnthroughthecoordinatesofthelowerrange
and operation.
limit at specified sensor output, and the upper range limit at
ANSI/ISA S37.1
specified output expressed in percentage of sensor span.
S3.1.4 error, n—the error for a given value of the input
S3.1.19 supporting surface, n—surfaceonwhichtheequip-
variable (measurand) is the difference between the measured
ment is placed.
value of the output signal and the expected value of the output
S3.1.20 tachometer, n—an instrument capable of
signal.Theexpectedvalueoftheoutputsignalforanyvalueof
generating, transmitting, and indicating information or signal
themeasurandshallberepresentedbyastraightlinewhoseend
that can be converted into a function of rotational speed.
points are given by:
S3.1.21 target, n—description including items such as
S3.1.4.1 The specified value of the output signal at the
material, size, multiple reflectors, and surface features shall be
minimum input value of the measurand (for example, 4 mAat
as specified in the acquisition requirements.
the minimum specified rotational speed).
S3.1.22 warm-up time, n—th
...
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