ASTM F2046-00(2011)

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

• Status: Historical
• Publication Date: 31-Mar-2011
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.10 - Electrical

Relations

• Replaces: ASTM F2046-00(2006) - Standard Specification for Tachometers, Various
• Effective Date: 01-Apr-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:F2046 −00 (Reapproved 2011) 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 (7)Electrical, magnetovoltmeter;
(8) Frequency responsive, electrical control box and
1.1 Thisspecificationcoversvarioustachometerscapableof
voltmeter, direct drive;
measuring rotational shaft speed.
(9)Frequency sensitive, electrical, nonrotating magnetic
1.2 Specialrequirementsfortachometertypesusedinnaval
pickup, direct drive, consists of a magnetic pickup, transducer,
shipboard applications are included in Supplement S1.
and indicator;
1.3 The values stated in SI units are to be regarded as the (10)Photoelectric;
(11)Digital contact;
standard. The values given in parentheses are for information
only. (12)Centrifugal, flexible drive; and
(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—unitsof
(1)Title, number, and date of this specification;
measurement recognized by the Comite’ International des
(2)Quantity of tachometers required;
Poids et Mesures (CIPM).
(3)Range;
3.1.2 tachometer—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;
(1)Centrifugal;
(11)Size and weight restrictions;
(2)Centrifugal, flexible drive;
(12)Critical service life requirements;
(3)Chonometric;
(13)Performance requirements;
(4)Electrical, alternating current (ac) voltage responsive,
(14)Surface finish requirements;
direct drive;
(15)Cleaning requirements;
(5)Electrical reactance;
(16)When certification is required;
(6)Electrical, magnetovoltmeter, direct drive;
(17)Marking requirements;
(18)Packaging requirements; and
This specification is under the jurisdiction ofASTM Committee F25 on Ships (19)Preservation requirements.
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
Electrical. 6. Materials and Manufacture
Current edition approved April 1, 2011. Published April 2011. Originally
6.1 Material Selection—The materials for all parts shall be
approved in 2000. Last previous edition approved in 2006 as F2046–00 (2006).
selected for long-term compatibility with the environment in
DOI: 10.1520/F2046-00R11.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
which the tachometer will be installed or used.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.2 Material Inspection—Themanufacturershallberespon-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sible for ensuring that materials used are manufactured,
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2046−00 (2011)
examined, and tested in accordance with the specifications and eter design. If each range is covered by a separate and distinct
standards as applicable. design, a test specimen for each range will require testing. In
instances in which a singular design series may cover multiple
7. Physical Properties
ranges and types, it is recommended that three test specimens
betestedprovidedtheelectricalandmechanicalsimilaritiesare
7.1 Size and Weight—The buyer may have intended appli-
approved by the buyer. In no case, however, should less than
cations where size and weight are limited. Size and weight
three units, one unit each representing low, medium, and high
limitations shall be specified in the acquisition requirements.
ranges, be tested, regardless of design similarity.
8. Performance Requirements
12. Test Methods
8.1 Service Life—Thebuyermayhaveaminimumspecified
12.1 Tests—All tests shall be performed in accordance with
serviceliferequirement.Criticalserviceliferequirementsshall
ASTM, ASME, or industry standards as specified.
be specified in the acquisition requirements.
12.2 Test Data—All test data shall remain on file at the
8.2 Tachometer Performance—Performance tolerances are
manufacturer’sfacilityforreviewbythebuyeruponrequest.It
usually specified in percentage of range span. The following
isrecommendedthattestdataberetainedinthemanufacturer’s
performance characteristics and environmental exposures may
filesforatleastthreeyearsoraperiodoftimeacceptabletothe
or may not be important to each buyer’s intended application.
buyer and manufacturer.
(1)Accuracy,
(2)Repeatability,
13. Quality Assurance Provisions
(3)Damping,
13.1 Warranty:
(4)Temperature,
13.1.1 Responsibility for Warranty—Unless otherwise
(5)Humidity,
specified, the manufacturer is responsible for the following:
(6)Salt spray,
(1)All materials used to produce a unit and
(7)Vibration,
(2)Manufacturer will warrant his product to be free from
(8)Shock, and
defect of workmanship to produce the unit.
(9)Electromagnetic interference (EMI).
14. Certification
9. Workmanship, Finish, and Appearance
14.1 When specified in the purchase order or contract, the
9.1 Cleaning, Finish, and Appearance— Any special
buyer shall be furnished certification that samples representing
cleaning, surface finish, and appearance requirements shall be
each lot have been either tested or inspected as directed in this
specified in the acquisition requirements.
specification, and the requirements have been met. When
specified in the purchase order or contract, a report of the test
10. Inspection
results shall be furnished.
10.1 Classification of Inspections—The inspection require-
ments specified herein are classified as follows:
15. Product Marking
(1)Qualification testing and
15.1 User-specified product marking shall be listed in the
(2)Quality conformance testing.
acquisition requirements. The minimum data to be clearly
10.2 Qualification Testing—Qualification test requirements
marked on each tachometer shall include the following:
shall be specified, where applicable. Test methods should be
(1)Manufacturer’s name,
identified for each design and performance characteristic
(2)Manufacturer’s part number,
specified. Test report documentation requirements should also
(3)Serial number or lot number,
be specified.
(4)Date of manufacture, and
(5)Range.
10.3 Quality Conformance Testing—Quality conformance
inspection is accomplished when acceptance and qualification
16. Packaging and Package Marking
testing is satisfied by a previous acquisition or when the
16.1 Packaging of Product for Delivery—Product shall be
product has demonstrated reliability in similar applications.
packaged for shipment in accordance with Practice D3951.
Quality conformance inspection is usually less intensive than
acceptance and qualification, often verifying that samples of a
16.2 Anyspecialpreservation,packaging,orpackagemark-
production lot meet a few critical performance requirements.
ing requirements for shipment or storage shall be identified in
the acquisition requirements.
11. Number of Tests and Retests
17. Keywords
11.1 Test Specimens—The number of test specimens to be
subjected to qualification testing shall depend on the tachom- 17.1 tachometer
F2046−00 (2011)
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 MIL-STD-167-1 Mechanical Vibrations of Shipboard
Equipment (Type I—Environmental and Type II—Internally
S1.1 This supplement covers single-range noncontact elec-
Excited)
tric and fiber-optic tachometers capable of generating,
S2.2.1 Military Specifications:
transmitting, and indicating information or signal that can be
MS3452Connector, Receptacle, Electric, Box Mounting,
converted into a function of rotational speed. The subject
Rear Release, Crimp Contact, AN Type
tachometers may be used in shipboard systems, such as gas
generators, power turbines, propulsion shafts, and gas steam
MS3456Connector, Plug, Electrical, Rear Release, Crimp
turbine generators.
Contact, AN Type
S1.2 Vibrating reed resonant-type tachometers are not cov-
MIL-C-5015Connectors, Electrical, Circular Threaded, AN
ered in this specification.
Type General Specification for
S1.3 The values stated in SI units are to be regarded as the
MIL-M-24794Material, Index Matching, Fiber Optics
standard. The values given in parentheses are for information
MIL-F-49291Fiber, Optical, (Metric), General Specifica-
only.
tions for
MIL-C-83522Connectors, Fiber Optic, Single Terminus,
S2. Referenced Documents
General Specification for
S2.1 Commercial Documents:
2 MIL-C-83522/16Connector, Fiber Optic, Single Terminus,
S2.1.1 ASTM Standards:
Plug, Adapter Style, 2.5 mm Bayonet Coupling, Epoxy
B117 Practice for Operating Salt Spray (Fog) Apparatus
MIL-C-83522/17Connector, Fiber Optic, Single Terminus,
D3951 Practice for Commercial Packaging
Adapter, 2.5 mm Bayonet Coupling, Bulkhead Panel Mount
S2.1.2 ANSI/ISA Standards:
ANSI/ISAS37.1 (R-1982)Electrical Transducer Nomencla- MIL-C-83522/18Connector Fiber Optic, Single Terminus,
ture and Terminology Adapter, 2.5 mm Bayonet Coupling, PC Mount
ANSI/ASQC Q9001-1994 Quality Systems—Model for
MIL-C-85045Cables, Fiber Optic, (Metric), General Speci-
Quality Assurance in Design, Development, Production,
fication for
Installation, Inspection, Testing, and Servicing
MIL-S-901Shock Tests, H.I. (High Impact), Shipboard
S2.1.3 Electronic Industries Association (EIA):
Machinery, Equipment, and Systems, Requirements for
RS-422Electrical Characteristics of Balanced Voltage Digi-
tal Interface Circuit
S3. Terminology
455-22 FOTP-22Ambient Light Susceptibility of Fiber
S3.1 Definitions—Terms marked with (ANSI/ISA S37.1)
Optic Components
are taken directly from ANSI/ISA S37.1 (R-1982) and are
455-34FOTP-34InterconnectionDeviceInsertionLossTest
included for the convenience of the reader.
S2.2 Government Documents:
S2.2.1 Military Standards:
S3.1.1 ambient conditions—conditions, such as pressure
MIL-STD-461Electromagnetic Interference Characteristics and temperature, of the medium surrounding the case of a
of Subsystems and Equipment, Requirements for the Control
sensor (ANSI/ISA S37.1).
of
S3.1.2 calibration—test during which known values of
measurandsareappliedtothesensorandcorrespondingoutput
readings are recorded under specific conditions (ANSI/ISA
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
S37.1).
4th Floor, New York, NY 10036, http://www.ansi.org.
Available from Electronic Industries Alliance (EIA), 2500 Wilson Blvd.,
S3.1.3 environmental conditions—specified external
Arlington, VA 22201, http://www.ecaus.org/eia.
conditions,suchasshock,vibration,andtemperature,towhich
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
a sensor may be exposed during shipping, storage, handling,
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
dodssp.daps.dla.mil. and operation (ANSI/ISA S37.1).
F2046−00 (2011)
S3.1.4 error—the error for a given value of the input S3.1.20 target—description including items such as
variable (measurand) is the difference between the measured material, size, multiple reflectors, and surface features shall be
value of the output signal and the expected value of the output as specified in the acquisition requirements.
signal.Theexpectedvalueoftheoutputsignalforanyvalueof S3.1.21 tachometer—an instrument capable of generating,
themeasurandshallberepresentedbyastraightlinewhoseend transmitting, and indicating information or signal that can be
points are given by: converted into a function of rotational speed.
S3.1.22 warm-up time—the time required for a sensor to
S3.1.4.1 The specified value of the output signal at the
operate within specified accuracy, repeatability, and other
minimum input value of the measurand (for example, 4 mAat
critical parameters after being energized from a cold (ambient)
the minimum specified rotational speed).
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).
S4.1 Electric Types:
S3.1.5 noncontact tachometer—anytypeoftachometerthat
S4.1.1 Designation—Tachometers shall be classified by a
sensesorrespondstorotationalspeedwithoutphysicalcontact
series of designations which shall be assigned and listed in the
or mechanical connection to the shaft being measured.
format following.
S3.1.6 operating environmental conditions—environmental
Example: F2046-20M-BK-A
conditions during exposure to which a sensor must perform in
F2046 20M BK A
some specified manner (ANSI/ISA S37.1).
Specification Range Mounting Indicator
S3.1.7 optical—involving the use of light-sensitive devices (see S4.1.2) (see S4.1.3) (see S4.1.4)
to acquire information.
S4.1.2 Range—Electric tachometer ranges shall be selected
S3.1.8 optical fiber—a very thin filament or fiber, made of from the standard ranges listed in Table S4.1.
S4.1.3 Mounting—Tachometer indicators shall be either
dielectricmaterials,thatisenclosedbymaterialoflowerindex
of refraction and transmits light throughout its length by bulkhead mounted (designator—BK) or panel (designator—
PL) mo
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