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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
1
(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.
3
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
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.
1
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.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
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
1

---------------------- Page: 1 ----------------------
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 swit
...

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
1
(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
2.1 ASTM Standards:
D3951 Practice for Commercial Packaging
3
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.
1
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.
2
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.
3
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
1

---------------------- Page: 1 ----------------------
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 ca
...