ASTM F2071-00(2017)

Standard Specification for Switch, Position Proximity (Noncontact) or Limit (Mechanical Contact), Fiber-Optic

ABSTRACT
This specification covers the requirements for the proximity and limit of fiber-optic position switches. This specification does not include switches that transfer an optical signal from one path to another by an external force or energy applied to the switch. The fiber-optic switches meet physical property requirements stipulated for enclosure, optoelectronic module, external configuration, and size and weight. The switches shall also adhere to minimum specified service life requiements. Other critical performance requirements shall be specified in the acquisition order as deemed important to the purchaser.
SCOPE
1.1 This specification covers the requirements for fiber-optic position switches (proximity and limit). This specification does not include switches that transfer an optical signal from one path to another by an external force or energy applied to the switch.  
1.2 Special requirements for naval shipboard applications are included in the Supplement.  
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. Where information is to be specified, it shall be stated in SI units.  
1.4 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.  
1.5 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

• Status: Historical
• Publication Date: 31-Jul-2017
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.10 - Electrical

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F2071 −00 (Reapproved 2017) An American National Standard
Standard Specification for
Switch, Position Proximity (Noncontact) or Limit
(Mechanical Contact), Fiber-Optic
This standard is issued under the fixed designation F2071; 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.
1. Scope 2.2 ISO Standards:
ISO 9001Quality System—Model for QualityAssurance in
1.1 This specification covers the requirements for fiber-
Design/Development, Production, Installation, and Ser-
optic position switches (proximity and limit). This specifica-
vicing
tion does not include switches that transfer an optical signal
fromonepathtoanotherbyanexternalforceorenergyapplied
3. Terminology
to the switch.
3.1 Definitions:
1.2 Special requirements for naval shipboard applications
3.1.1 closed switch, n—the light path is complete; signal
are included in the Supplement.
from transmitter to receiver is complete.
1.3 The values stated in SI units are to be regarded as 3.1.2 closed switch with positive alarm, n—the light path is
standard. The values given in parentheses are mathematical
complete. Signal level indicates that the end faces of the
conversions to inch-pound units that are provided for informa- sensing element are dirty and require maintenance for contin-
tion only and are not considered standard. Where information ued proper operation.
is to be specified, it shall be stated in SI units.
3.1.3 fiber-optic position switch, n—a device that converts
1.4 This standard does not purport to address all of the measured position, via changes in fiber-optic properties, to an
output that is a function of the applied measurand. The
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- fiber-optic position switch normally consists of a sensor head,
optoelectronics module, and connectorized fiber-optic cable.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.1.4 limit switch, n—a switch that senses a change in
1.5 This international standard was developed in accor-
position via mechanical contact.
dance with internationally recognized principles on standard-
3.1.5 open switch, n—the light path is blocked; signal from
ization established in the Decision on Principles for the
transmitter to receiver is not complete.
Development of International Standards, Guides and Recom-
3.1.6 optical transmittance change, n—thechangeinoptical
mendations issued by the World Trade Organization Technical
power level introduced by an environmental, mechanical, or
Barriers to Trade (TBT) Committee.
other induced stress.
3.1.7 optoelectronics module, n—unit of the fiber-optic
2. Referenced Documents
position switch that contains the optical transmitter and
2.1 ASTM Standards:
receiver, and signal conditioning electronics, necessary to
D3951Practice for Commercial Packaging
convert the sensed position to the specified output signal. The
optoelectronics module may be an expansion card for a
microprocessor-based system, or a stand-alone unit.
This specification is under the jurisdiction ofASTM Committee F25 on Ships
3.1.8 proximity switch, n—a switch that senses a change in
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
position via noncontact means.
Electrical.
Current edition approved Aug. 1, 2017. Published August 2017. Originally
3.1.9 sensor head, n—unit of the fiber-optic position switch
approved in 2000. Last previous edition approved in 2011 as F2071–00 (2011).
that detects position via changes in optical properties. The
DOI: 10.1520/F2071-00R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2071−00 (2017)
optoelectronics module interrogates the sensor head to deter- fiber-optic cable allows completion of the light path to a
mine the position of the measurand. An optical signal is fiber-optic receiver in the optoelectronics module. Dependent
transmitted from the optoelectronics module to the sensor upon the configuration of the switch, the mechanical contact
head.Theopticalpathiseithercompleteorblocked,depending device either completes or breaks the light path upon detection
on the status of the item being measured, giving an indication
of the object.
of the position or status of the item back to the optoelectronics
module.
5. Ordering Information
3.1.10 steady-state supply voltage, n—an input voltage that
5.1 The purchaser should provide the manufacturer with all
does not deviate from a specified nominal tolerance (for
of the pertinent application data. Recommended data is shown
example, 65%).
in 5.2. If special application operating conditions exist that are
3.1.11 tether valve limit switch, n—a limit switch used to
not shown in the acquisition requirements, they should also be
detect valve position via a tether line connected to the valve
described.
handle.
5.2 Acquisition Requirements—Acquisition documents
3.1.12 transient supply voltage, n—a voltage superimposed
should specify the following:
on the steady-state supply voltage that is greater than the
(1)Title, number, and date of this specification,
specified steady-state tolerance and has a very rapid rise and
(2)Manufacturer’s part number,
fall.
(3)Switch type required (see 4.3),
(4)Unique or special enclosure requirements (see 7.1),
4. Classification
(5)Type of optoelectronics module (see 7.2). If control
4.1 Designation—Most switch manufacturers use enclosure or console mounted, specify requirements,
designations,systematicnumberingoridentifyingcodes.Once
(6)Length of fiber-optic cable required,
understood, these designations could aid the purchaser in
(7)Type of electrical connection (see 7.4),
quickly identifying the switch type, electrical power ratings, (8)Whentheelectricalconnectionmatingplugisnottobe
and other characteristics.
provided (see 7.4),
(9)System operating characteristics,
4.2 Design—Fiber-optic position switches typically consist
(10)Materials,
of an assembly with three major components: optical sensor
(11)Environmental requirements,
head, fiber-optic cables, and optoelectronics module. The
(12)Quantity of switches required,
optoelectronics module shall be interchangeable between any
(13)Size and weight restrictions (see 7.5),
of the sensor types.
(14)Critical service life requirements (see 8.1),
4.3 Types—The following are common types of fiber-optic
(15)Performance requirements (see 8.2),
position switches:
(16)Special surface finish requirements (see 9.1),
Proximity
(17)Special workmanship requirements (see 9.2),
Limit, pin actuated
(18)When certification is required (see 13),
Limit, lever actuated
(19)Special marking requirements (see 14),
Limit, lever and roller
(20)Special packaging or package marking requirements
Limit, tether valve
(see 15),
4.3.1 Fiber-Optic Proximity Switches—The fiber-optic
(21)When ISO 9001 quality assurance system is not
proximity switch sensor head receives the light beam from the
required (see 16.1), and
light source in the optoelectronics module via a fiber-optic
(22)Special warranty requirements (see 16.1).
cable.The sensor head emits the light beam to detect an object
in a specific location. The sensor head also receives the light
6. Materials and Manufacture
beam reflection from the object, typically via a wide angle
6.1 Position Switches—Materialsforthefiber-opticposition
receiving lens, and is detected by the light beam receiving
switchesshallbecorrosionresistantandnoncombustibleorfire
device in the optoelectronics module. When the object moves
retardant.
into the sensing site, the light beam is reflected into the
receiving lens completing the fiber-optic light path. It is
important to consider contrasting light levels between reflec- 7. Physical Properties
tionsfrombackgroundobjectswhennoobjecttobedetectedis
7.1 Enclosure—If case sealing is required, the mechanism,
present and reflections from the object to be detected, when
materials, and process shall be described. The same should
selecting a fiber-optic proximity switch.
apply to the electrical connector. Resistance to cleaning sol-
4.3.2 Fiber-Optic Limit Switches —The fiber-optic limit
vents should likewise be stated. Unique or special enclosure
switch sensor head houses the mechanical contact device that
requirements shall be specified in the acquisition requirements
sensesthepositionoftheobjecttobedetected.Themechanical
(see 5.2).
contact device is typically a pin or plunger, lever, roller, lever
and roller, or tether valve. The fiber-optic limit switch sensor 7.2 Optoelectronics Module—The optoelectronics module
head receives the light beam from the light source in the shall contain the optical and signal conditioner devices neces-
optoelectronics module via a fiber-optic cable. The same sarytoconvertthesensorheadoutputtothespecifiedelectrical
F2071−00 (2017)
output. Optoelectronics modules shall be designed in consid- 9. Workmanship, Finish, and Appearance
eration of their mounting method (type): bulkhead mounted,
9.1 Finish and Appearance—Any special surface finish and
control enclosure mounted, or console mounted (microproces-
appearance requirements shall be specified in the acquisition
sor expansion card).
requirements (see 5.2).
7.3 External Configuration—The outline drawing shall
9.2 Workmanship—Any special workmanship requirements
show the configuration with dimensions in SI units (inch-
shall be specified in the acquisition requirements (see 5.2).
poundunits)iftheyarenotspecified.Theoutlinedrawingshall
include limiting dimensions for electrical and fiber-optic con-
10. Number of Tests and Retests
nections if they are not specified. The outline drawing shall
10.1 The number of test specimens to be subjected to
indicate the mounting method with hole size, center location,
first-articleandconformancetestsshallbespecifiedandshould
andotherpertinentdimensions.Wherethreadedholesareused,
depend on the fiber-optic position switch design.As guidance,
thread specifications shall be provided.
foreachswitchcoveredbyaseparateanddistinctdesign,atest
7.4 Electrical Connection—An electrical interface connec-
specimenforeachdesignshouldrequiretesting.Ininstancesin
tor receptacle and mating plug shall be provided with each
which a singular design series may cover multiple switch
optoelectronicsmoduleofthepositionswitchunlessotherwise
configurations, a minimum of three test specimens should be
specified in the acquisition requirements (see 5.2). Other
tested, provided the electrical, optical, and mechanical simi-
possible electrical interface connections include pigtails and
larities are approved by the purchaser. It is recommended that
terminal boards.
one unit be tested for each switch configuration regardless of
design similarity.
7.5 Size and Weight—The purchaser may have intended
applications in which size and weight are limited. Size and
11. Inspection
weightrestrictionsshallbespecifiedintheacquisitionrequire-
ments (see 5.2).
11.1 Classification of Inspections —The inspection require-
ments specified herein are classified as follows:
8. Performance Requirements
(1)First-article tests (see 11.2)
8.1 Service Life—The purchaser may have a minimum (2)Conformance tests (see 11.3)
specified service life requirement that may be critical. Critical
11.2 First-Article Tests—First-articletestrequirementsshall
service life requirements shall be specified in the acquisition
bespecified,whereapplicable.First-articletestmethodsshould
requirements (see 5.2).
be identified for each design and performance characteristic
8.2 Switch Performance—Critical performance require- specified.
ments shall be specified in the acquisition requirements (see
11.3 Conformance Tests—Conformance testing is accom-
5.2). The following performance characteristics and environ-
plished when first-article tests were satisfied by a previous
mental exposures may or may not be important to each
acquisition or the product has demonstrated reliability in
purchaser’s intended application.
similar applications. Conformance tests are usually less inten-
(1)Warm-up time,
sive than first-article tests, often verifying that samples of a
(2)Steady-state supply voltage and frequency (ac),
production lot meet a few critical performance requirements.
(3)Steady-state supply voltage (dc),
(4)Response time,
12. Test Data
(5)Transient supply voltage and frequency (ac),
12.1 Test Data—Test data shall remain on file at the manu-
(6)Transient supply voltage (dc),
facturer’s facility for review by the purchaser upon request. It
(7)Change in optical transmittance,
isrecommendedthattestdataberetainedinthemanufacturer’s
(8)Dynamic range,
filesforatleastthreeyearsoraperiodoftimeacceptabletothe
(9)Ambient light susceptibility,
purchaser and manufacturer.
(10)Temperature,
(11)Humidity,
13. Certification
(12)Salt spray,
13.1 When specified in the acquisition requirements (see
(13)Insulation resistance,
5.2), the purchaser shall be furnished certification that samples
(14)Power interruption,
representing each lot have been either tested or inspected as
(15)Short circuit,
directed in this specification and the requirements have been
(16)Line voltage reversal (dc powered),
met.
(17)Output,
(18)Mechanical life,
14. Product Marking
(19)Enclosure,
(20)Vibration, 14.1 Special purchaser specified product marking shall be
(21)Shock, listed in the acquisition requirements (see 5.2). The minimum
(22)Electromagnetic interference (EMI), and data to be clearly marked on each switch shall include the
(23)Power system harmonic distortion. following:
F2071−00 (2017)
14.1.1 Sensor Head: 15.2 Special packaging or package marking requirements
(1) “FIBER-OPTIC POSITIONS SWITCH—SENSOR for shipment or storage shall be identified in the acquisition
requirements (see 5.2).
HEAD,”
(2)Manufacturer’s name,
16. Quality Assurance
(3)Manufacturer’s serial number or lot number, and
16.1 Quality System—A quality assurance system in accor-
(4)Manufacturer’s part number.
dancewithISO9001shallbemaintainedtocontrolth
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: F2071 − 00 (Reapproved 2011) F2071 − 00 (Reapproved 2017)An American National Standard
Standard Specification for
Switch, Position Proximity (Noncontact) or Limit
(Mechanical Contact), Fiber-Optic
This standard is issued under the fixed designation F2071; 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 specification covers the requirements for fiber-optic position switches (proximity and limit). This specification does not
include switches that transfer an optical signal from one path to another by an external force or energy applied to the switch.
1.2 Special requirements for naval shipboard applications are included in the Supplement.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
mathematical conversions to inch-pound units that are provided for information only and are not considered standard. Where
information is to be specified, it shall be stated in SI units.
1.4 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.
1.4 Special requirements for naval shipboard applications are included in the Supplement.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
D3951 Practice for Commercial Packaging
2.2 ISO Standards:
ISO 9001 Quality System—Model for Quality Assurance in Design/Development, Production, Installation, and Servicing
3. Terminology
3.1 Definitions:
3.1.1 closed switch—switch, n—the light path is complete; signal from transmitter to receiver is complete.
3.1.2 closed switch with positive alarm—alarm, n—the light path is complete. Signal level indicates that the end faces of the
sensing element are dirty and require maintenance for continued proper operation.
3.1.3 fiber-optic position switch—switch, n—a device that converts measured position, via changes in fiber-optic properties, to
an output that is a function of the applied measurand. The fiber-optic position switch normally consists of a sensor head,
optoelectronics module, and connectorized fiber-optic cable.
3.1.4 limit switch—switch, n—a switch that senses a change in position via mechanical contact.
3.1.5 open switch—switch, n—the light path is blocked; signal from transmitter to receiver is not complete.
3.1.6 optical transmittance change—change, n—the change in optical power level introduced by an environmental, mechanical,
or other induced stress.
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
Electrical.
Current edition approved April 1, 2011Aug. 1, 2017. Published April 2011August 2017. Originally approved in 2000. Last previous edition approved in 20062011 as
F2071 – 00 (2011).(2006). DOI: 10.1520/F2071-00R11.10.1520/F2071-00R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from International Organization for Standardization (ISO), 1 rue de Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland. ISO Central Secretariat,
BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2071 − 00 (2017)
3.1.7 optoelectronics module—module, n—unit of the fiber-optic position switch that contains the optical transmitter and
receiver, and signal conditioning electronics, necessary to convert the sensed position to the specified output signal. The
optoelectronics module may be an expansion card for a microprocessor-based system, or a stand-alone unit.
3.1.8 proximity switch—switch, n—a switch that senses a change in position via noncontact means.
3.1.9 sensor head—head, n—unit of the fiber-optic position switch that detects position via changes in optical properties. The
optoelectronics module interrogates the sensor head to determine the position of the measurand. An optical signal is transmitted
from the optoelectronics module to the sensor head. The optical path is either complete or blocked, depending on the status of the
item being measured, giving an indication of the position or status of the item back to the optoelectronics module.
3.1.10 steady-state supply voltage—voltage, n—an input voltage that does not deviate from a specified nominal tolerance (for
example, 65 %).
3.1.11 tether valve limit switch—switch, n—a limit switch used to detect valve position via a tether line connected to the valve
handle.
3.1.12 transient supply voltage—voltage, n—a voltage superimposed on the steady-state supply voltage that is greater than the
specified steady-state tolerance and has a very rapid rise and fall.
4. Classification
4.1 Designation—Most switch manufacturers use designations, systematic numbering or identifying codes. Once understood,
these designations could aid the purchaser in quickly identifying the switch type, electrical power ratings, and other characteristics.
4.2 Design—Fiber-optic position switches typically consist of an assembly with three major components: optical sensor head,
fiber-optic cables, and optoelectronics module. The optoelectronics module shall be interchangeable between any of the sensor
types.
4.3 Types—The following are common types of fiber-optic position switches:
Proximity
Proximity
Limit, pin actuated
Limit, lever actuated
Limit, lever and roller
Limit, tether valve
Limit, pin actuated
Limit, lever actuated
Limit, lever and roller
Limit, tether valve
4.3.1 Fiber-Optic Proximity Switches—The fiber-optic proximity switch sensor head receives the light beam from the light
source in the optoelectronics module via a fiber-optic cable. The sensor head emits the light beam to detect an object in a specific
location. The sensor head also receives the light beam reflection from the object, typically via a wide angle receiving lens, and is
detected by the light beam receiving device in the optoelectronics module. When the object moves into the sensing site, the light
beam is reflected into the receiving lens completing the fiber-optic light path. It is important to consider contrasting light levels
between reflections from background objects when no object to be detected is present and reflections from the object to be detected,
when selecting a fiber-optic proximity switch.
4.3.2 Fiber-Optic Limit Switches —The fiber-optic limit switch sensor head houses the mechanical contact device that senses
the position of the object to be detected. The mechanical contact device is typically a pin or plunger, lever, roller, lever and roller,
or tether valve. The fiber-optic limit switch sensor head receives the light beam from the light source in the optoelectronics module
via a fiber-optic cable. The same fiber-optic cable allows completion of the light path to a fiber-optic receiver in the optoelectronics
module. Dependent upon the configuration of the switch, the mechanical contact device either completes or breaks the light path
upon detection of the object.
5. Ordering Information
5.1 The purchaser should provide the manufacturer with all of the pertinent application data. Recommended data is shown in
5.2. If special application operating conditions exist that are not shown in the acquisition requirements, they should also be
described.
5.2 Acquisition Requirements—Acquisition documents should specify the following:
(1) Title, number, and date of this specification,
(2) Manufacturer’s part number,
(3) Switch type required (see 4.3),
(4) Unique or special enclosure requirements (see 7.1),
(5) Type of optoelectronics module (see 7.2). If control enclosure or console mounted, specify requirements,
F2071 − 00 (2017)
(6) Length of fiber-optic cable required,
(7) Type of electrical connection (see 7.4),
(8) When the electrical connection mating plug is not to be provided (see 7.4),
(9) System operating characteristics,
(10) Materials,
(11) Environmental requirements,
(12) Quantity of switches required,
(13) Size and weight restrictions (see 7.5),
(14) Critical service life requirements (see 8.1),
(15) Performance requirements (see 8.2),
(16) Special surface finish requirements (see 9.1),
(17) Special workmanship requirements (see 9.2),
(18) When certification is required (see 13),
(19) Special marking requirements (see 14),
(20) Special packaging or package marking requirements (see 15),
(21) When ISO 9001 quality assurance system is not required (see 16.1), and
(22) Special warranty requirements (see 16.1).
6. Materials and Manufacture
6.1 Position Switches—Materials for the fiber-optic position switches shall be corrosion resistant and noncombustible or fire
retardant.
7. Physical Properties
7.1 Enclosure—If case sealing is required, the mechanism, materials, and process shall be described. The same should apply to
the electrical connector. Resistance to cleaning solvents should likewise be stated. Unique or special enclosure requirements shall
be specified in the acquisition requirements (see 5.2).
7.2 Optoelectronics Module—The optoelectronics module shall contain the optical and signal conditioner devices necessary to
convert the sensor head output to the specified electrical output. Optoelectronics modules shall be designed in consideration of their
mounting method (type): bulkhead mounted, control enclosure mounted, or console mounted (microprocessor expansion card).
7.3 External Configuration—The outline drawing shall show the configuration with dimensions in SI units (inch-pound units)
if they are not specified. The outline drawing shall include limiting dimensions for electrical and fiber-optic connections if they
are not specified. The outline drawing shall indicate the mounting method with hole size, center location, and other pertinent
dimensions. Where threaded holes are used, thread specifications shall be provided.
7.4 Electrical Connection—An electrical interface connector receptacle and mating plug shall be provided with each
optoelectronics module of the position switch unless otherwise specified in the acquisition requirements (see 5.2). Other possible
electrical interface connections include pigtails and terminal boards.
7.5 Size and Weight—The purchaser may have intended applications in which size and weight are limited. Size and weight
restrictions shall be specified in the acquisition requirements (see 5.2).
8. Performance Requirements
8.1 Service Life—The purchaser may have a minimum specified service life requirement that may be critical. Critical service
life requirements shall be specified in the acquisition requirements (see 5.2).
8.2 Switch Performance—Critical performance requirements shall be specified in the acquisition requirements (see 5.2). The
following performance characteristics and environmental exposures may or may not be important to each purchaser’s intended
application.
(1) Warm-up time,
(2) Steady-state supply voltage and frequency (ac),
(3) Steady-state supply voltage (dc),
(4) Response time,
(5) Transient supply voltage and frequency (ac),
(6) Transient supply voltage (dc),
(7) Change in optical transmittance,
(8) Dynamic range,
(9) Ambient light susceptibility,
(10) Temperature,
(11) Humidity,
F2071 − 00 (2017)
(12) Salt spray,
(13) Insulation resistance,
(14) Power interruption,
(15) Short circuit,
(16) Line voltage reversal (dc powered),
(17) Output,
(18) Mechanical life,
(19) Enclosure,
(20) Vibration,
(21) Shock,
(22) Electromagnetic interference (EMI), and
(23) Power system harmonic distortion.
9. Workmanship, Finish, and Appearance
9.1 Finish and Appearance—Any special surface finish and appearance requirements shall be specified in the acquisition
requirements (see 5.2).
9.2 Workmanship—Any special workmanship requirements shall be specified in the acquisition requirements (see 5.2).
10. Number of Tests and Retests
10.1 The number of test specimens to be subjected to first-article and conformance tests shall be specified and should depend
on the fiber-optic position switch design. As guidance, for each switch covered by a separate and distinct design, a test specimen
for each design should require testing. In instances in which a singular design series may cover multiple switch configurations, a
minimum of three test specimens should be tested, provided the electrical, optical, and mechanical similarities are approved by the
purchaser. It is recommended that one unit be tested for each switch configuration regardless of design similarity.
11. Inspection
11.1 Classification of Inspections —The inspection requirements specified herein are classified as follows:
(1) First-article tests (see 11.2)
(2) Conformance tests (see 11.3)
11.2 First-Article Tests—First-article test requirements shall be specified, where applicable. First-article test methods should be
identified for each design and performance characteristic specified.
11.3 Conformance Tests—Conformance testing is accomplished when first-article tests were satisfied by a previous acquisition
or the product has demonstrated reliability in similar applications. Conformance tests are usually less intensive than first-article
tests, often verifying that samples of a production lot meet a few critical performance requirements.
12. Test Data
12.1 Test Data—Test data shall remain on file at the manufacturer’s facility for review by the purchaser upon request. It is
recommended that test data be retained in the manufacturer’s files for at least three years or a period of time acceptable to the
purchaser and manufacturer.
...