ASTM F2044-00
(Specification)Standard Specification for Liquid Level Indicating Equipment, Electrical (Withdrawn 2009)
Standard Specification for Liquid Level Indicating Equipment, Electrical (Withdrawn 2009)
ABSTRACT
This specification covers the requirements for electrical liquid level indicating equipment for shipboard low pressure and high pressure tanks containing freshwater, feed water, potable water, seawater, wastewater, diesel fuel, lubricating oil, contaminated oil, refrigerants, JP fuels, and various other fluids. Application includes compensating tanks in which the equipment must locate the interface. Each liquid level indicating equipment shall consists of one or more sensing devices; primary indicator panel assembly; and flexible interconnections, auxiliary indicator panel assembly, and portable indicator panel assembly, when needed or required. The level sensing techniques include: admittance and impedance, magnetic float, differential pressure, time domain reflectometry, capacitance, resistance tape, static pressure, radar, and ultrasonic sensing. The most common types of process media and the specified pressure range and display for liquid level indication are given. Materials for the sensing devices and wetted pans shall be selected for long-term compatibility with the process medium. Physical property requirements include: (1) enclosure, (2) liquid level indicating equipment mounting, (3) external configuration, (4) electrical connection, and (5) size and weight. Critical service life and performance requirements shall be specified in the acquisition requirements. The following performance characteristics and environmental exposures may or may not be important to the intended application: accuracy, response time, repeatability, hysteresis, insulation resistance, specific gravity, fluid conductivity, tank wall proximity, inclination, spike voltage, salt spray, vibration, shock enclosure, dc magnetic field, electromagnetic interference, immersion, and supply line voltage and frequency variation. Inspection requirements specified are classified as (1) first article test and (2) conformance test.
SCOPE
1.1 This specification covers the requirements for electrical liquid level indicating equipment for shipboard low pressure and high pressure tanks containing freshwater, feed water, potable water, seawater, wastewater, diesel fuel, lubricating oil, contaminated oil, refrigerants, JP fuels, and various other fluids. Application includes compensating tanks in which the equipment must locate the interface.
1.2 Each liquid level indicating equipment typically consists of the following components:
(a) One or more sensing devices;
(b) Flexible interconnections, if needed;
(c) Primary indicator panel assembly;
(d) Auxiliary indicator panel assembly, when required; and
(e) Portable indicator panel assembly, when required.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 to this standard.
WITHDRAWN RATIONALE
This specification covered the requirements for electrical liquid level indicating equipment for shipboard low pressure and high pressure tanks containing freshwater, feed water, potable water, seawater, wastewater, diesel fuel, lubricating oil, contaminated oil, refrigerants, JP fuels, and various other fluids. Application included compensating tanks in which the equipment must locate the interface.
Formerly under the jurisdiction of Committee F25 on Ships and Marine Technology, this specification was withdrawn in March 2009 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the ...
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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: F 2044 – 00
Standard Specification for
1
Liquid Level Indicating Equipment, Electrical
This standard is issued under the fixed designation F 2044; 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 (e) 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 3. Terminology
1.1 This specification covers the requirements for electrical 3.1 Definitions:
liquid level indicating equipment for shipboard low pressure 3.1.1 hysteresis—maximum difference in output, at any
and high pressure tanks containing freshwater, feed water, measurand value within the specified range, when the value is
potablewater,seawater,wastewater,dieselfuel,lubricatingoil, approached first with increasing and then with decreasing
contaminated oil, refrigerants, JP fuels, and various other measurand.
fluids. Application includes compensating tanks in which the 3.1.2 insulation resistance—the resistance measured be-
equipment must locate the interface. tween insulated portions of a liquid level indicating equipment
1.2 Eachliquidlevelindicatingequipmenttypicallyconsists and between insulated portions of a liquid level indicating
of the following components: equipment and ground when a specified dc voltage is applied
(a) One or more sensing devices; under specified conditions.
(b) Flexible interconnections, if needed; 3.1.3 output—electrical or numerical quantity, produced by
(c) Primary indicator panel assembly; a liquid level indicating sensor or measurement system, that is
(d) Auxiliary indicator panel assembly, when required; and a function of the applied measurand.
(e) Portable indicator panel assembly, when required. 3.1.4 pressure cycling—the specified minimum number of
1.3 The values stated in SI units are to be regarded as the specified periodic pressure changes over which a liquid level
standard. The values given in parentheses are for information indicating sensor will operate and meet the specified perfor-
only. Where information is to be specified, it shall be stated in mance.
SI units. 3.1.5 process medium—the measured fluid (measurand) that
1.4 This standard does not purport to address all of the comes in contact with the sensing element.
safety concerns, if any, associated with its use. It is the 3.1.6 repeatability—ability of a liquid level indicating
responsibility of the user of this standard to establish appro- equipment to reproduce output readings when the same mea-
priate safety and health practices and determine the applica- surand value is applied to it consecutively, under the same
bility of regulatory limitations prior to use. conditions, and in the same direction.
1.5 Special requirements for naval shipboard applications 3.1.7 response—the measured output of a liquid level indi-
are included in the Supplement to this standard. cating sensor to a specified change in measurand.
3.1.8 signal conditioner—an electronic device that makes
2. Referenced Documents
the output signal from a sensor element compatible with a
2.1 ASTM Standards: readout system.
2
D 3951 Practice for Commercial Packaging
3.1.9 wetted parts—liquid level indicating equipment com-
2.2 ISO Standards: ponents with at least one surface in direct contact with the
9001 Quality System Model for Quality Assurance in
process medium.
Design/Development, Production, Installation, and Ser-
3
4. Designation
vicing
4.1 Designation—Most liquid level indicating equipment
manufacturers use designations or systematic numbering or
1 identifying codes.
This specification is under the jurisdiction of ASTM Committee F25 on Ships
4.2 Design—Liquid level indicating equipment typically
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
Electrical.
consist of a sensing device that may or may not be in contact
Current edition approved July 10, 2000. Published September 2000.
with the process medium, a transduction element that modifies
2
Available from the Annual Book of ASTM Standards, Vol 15.09.
3 the signal from the sensing device to produce an electrical
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036. output,andanindicatorpanelassemblytoshowthelevelofthe
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F2044–00
mediumbeingmeasured.Somepartsofthesensingdevicemay 4.2.1.9 Ultrasonic—The ultrasonic technique uses high fre-
behermeticallysealedifthosepartsaresensitivetoandmaybe quency sonic waves transmitt
...
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