CSS FY21-CP-0009_Differential Electronic Level System Attachment 2.pdf

CSS FY21-CP-0009

01 JANUARY 2023

CALIBRATION STANDARDS SPECIFICATION

PROCUREMENT PACKAGE

DIFFERENTIAL ELECTRONIC LEVEL SYSTEM

DISTRIBUTION STATEMENT A: APPROVED FOR PUBLIC RELEASE, DISTRIBUTION IS UNLIMITED.

DESTRUCTION NOTICE – FOR UNCLASSIFIED, LIMITED DOCUMENTS, DESTROY BY ANY METHOD THAT WILL

PREVENT DISCLOSURE OF CONTENTS OR RECONSTRUCTION OF THE DOCUMENT.

PUBLISHED BY DIRECTION OF COMMANDING OFFICER, NAVAL SURFACE WARFARE CENTER, CORONA DIVISION v

CALIBRATION STANDARDS SPECIFICATION

PROCUREMENT PACKAGE

Differential Electronic Level System

Prepared for:

NAVAIR Metrology/Calibration Product Support Team

Prepared by:

Nelson Dale

Fleet Readiness Center East MRO Engineering Bldg. 163

MCAS Cherry Point NC, 28533-0021

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

DIFFERENTIAL ELECTRONIC LEVEL SYSTEM CSS FY21-CP-0009

i

RECORD OF CHANGES

Date Revision Author Pages Description of Change

01/31/2023 Original Nelson Dale • New

02/08/2023 Rev 1 Activity ii

Table of Contents

1.0 SCOPE

1.1. General

1.2. Usage

2.0 APPLICABLE DOCUMENTS

2.1. Reference documents

2.1.1. Government documents

2.2. Order of precedence

3.0 REQUIREMENTS

3.1. Performance requirements

3.1.1. Accuracy Requirement

3.1.2. Measurement Units

3.1.3. Accessories

3.2. Equipment components

3.2.1. Restricted materials

3.2.1.1. Material restricted for Navy use

3.2.1.2. Other restricted materials and gases

3.2.1.3. Combination of materials

3.2.2. Recycled, recovered, environmentally preferable, or biobased materials

3.3. Design and construction

3.3.1. Operator adjustments

3.3.2. Operator controls

3.3.3. Self-test capability

3.4. Digital control interface

3.4.1. USB interface requirements

3.5. Electrical power sources and connections

3.5.1. Electrical power source

3.5.1.1. Power consumption

3.5.1.2. Nominal and alternate power source

3.5.2. Electrical power connections

3.5.2.1. Input power cable

3.5.2.2. Battery operating and recharge time

3.6. Enclosure physical characteristics

3.6.1. Dimensions

3.6.2. Weight

3.6.3. Enclosure requirements

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3.6.3.1. Corners

3.7. Transit case

3.7.1. Transit case cover

3.7.2. Transit case handles

3.7.2.1. Hard transit case handles

3.7.3. Transit case accessory stowage

3.7.4. Transit case corners

3.7.5. Transit case insert

3.8. Marking and identification

3.8.1. Equipment identification

3.8.1.1. Identification plate

3.8.1.2. Identification plate supplemental information

3.8.2. Transit case identification plate

3.8.3. Nomenclature assignment

3.8.4. Item unique identification (IUID)

3.9. Environmental requirements

3.9.1. Environmental conditions

3.9.2. Temperature and humidity (T/H)

3.9.2.1. Temperature, not operating

3.9.2.2. Temperature, operating

3.9.2.3. Humidity

3.9.3. Mechanical shock

3.9.3.1. Bench handling

3.10. Safety

3.11. Calibration

3.11.1. Calibration interval

3.12. Workmanship

1.0 SCOPE

1.1. General. This document specifies the minimum requirements for a Differential Electronic Level System. This equipment may be of commercial design or modified commercial design. It is intended to be used by Navy personnel in shore-based laboratories and for on-site, in-place calibration. The equipment will be used to measure pitch, roll and deviations from flatness.

1.2. Usage. Equipment covered by this CSS is intended for use in testing equipment and systems in the worldwide natural and controlled environments in which Military equipment is operated. Equipment will also be subjected to operational conditions aboard land, sea and air vehicles, both military and commercial during periods of operation, transportation and storage. The requirements of this CSS are tailored to the intended use of the equipment. Specific requirements of MIL-PRF-28800G, as identified in this CSS, are invoked according to the class of equipment.

2.0 APPLICABLE DOCUMENTS

2.1. Reference documents. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issues of these documents shall be those in effect on the date of this solicitation.

2.1.1. Government documents.

DEPARTMENT OF DEFENSE specifications MIL-PRF-28800G – Test Equipment for use with Electrical and

Electronic Equipment

MIL-PRF-38793 – Technical Manuals: Calibration Procedures - Preparation

(Copies of DoD specifications are available online at http://assist.dla.mil.)

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-130N – Identification Marking of U.S. Military Property

(Copies of DoD standards are available online at http://assist.dla.mil.)

DEPARTMENT OF DEFENSE handbooks MIL-HDBK-781A – Reliability Test Methods, Plans, and

Environments for Engineering Development, Qualification, and Production

(Copies of DoD handbooks are available online at http://assist.dla.mil.)

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

NIST Special Publication 811 – Guide for the Use of the International

System of Units (SI)

NIST Technical Note 1297 – Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results

(Copies of NIST documents are available online at http://www.nist.gov/pml/productsservices /special-publications-tutorials.)

NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS

S9310-AQ-SAF-010 – Technical Manual for Batteries, Navy Lithium

Safety Program Responsibilities and Procedures

(Copies of this document are available online via Technical Data Management Information System (TDMIS) at https://mercury.tdmis.navy.mil by searching for the document number.

This document is available for ordering (hard copy) via the Naval Logistics Library at https://nll.navsup.navy.mil.)

2.2. Order of precedence. In the event of conflict between the text of this CSS and the references cited herein, the text of this specification shall take precedence. Nothing in this CSS, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.0 REQUIREMENTS

3.1. Performance requirements. The differential electronic level system shall be able equipped with two different electronic levels able to measure angles in a range of ±600 arc - seconds.

3.1.1. Accuracy Requirement. Each electronic level shall be accurate to a minimum of ±0.5% of indicated value throughout its measuring range with the understanding that zero is not included in the range.

3.1.2. Measurement Units. The differential electronic level system shall be able to display and output measurements in the following units at a minimum:

a. Arc – seconds (arcsec)

b. Micro – inches (µ in)

c. Micro – meter (µm)

3.1.3. Accessories. Each Differential Electronic Level System shall be provided with the accessories specified herein.

a. Each differential electronic level kit shall have fixed and/or adjustable bases to mount the electronic levels to for the measuring of flatness when using the Moody method.

b. Each differential electronic level kit shall have a controller capable of connecting to the electronic levels and provide their indications.

http://www.nist.gov/pml/productsservices https://nll.navsup.navy.mil/

c. Each differential electronic level kit shall have wireless communication capabilities from the levels to the controller.

d. Each differential electronic level kit shall have software capable of calculating and displaying and reporting flatness per the Moody method.

e. Each differential electronic level kit shall have a remote switch so that readings can be recorded away from the controller.

3.2. Equipment components. Parts, materials, and process shall be as specified herein and shall permit the equipment to meet all applicable requirements of its class.

3.2.1. Restricted materials. Restricted materials shall be as specified herein.

3.2.1.1. Material restricted for Navy use. The materials and parts specified in a through e shall not be used except as specified in this CSS. An exception is made for small lithium batteries used for memory backup as specified in 3.5.1.2.1.1 Battery restrictions.

a. Mercury, including mercury batteries

b. Radioactive material

c. Lithium electrochemical cells

d. Helium-3

e. Cadmium, except batteries

3.2.1.2. Other restricted materials and gases. Equipment shall not contain materials that promote the premature failure of the equipment or that present a health hazard under normal use or storage conditions as specified herein.

3.2.1.2.1. Organic materials. Equipment shall not contain materials prone to organic decay or that act as a nutrient for the growth of multicelled organisms.

3.2.1.2.2. Flammable materials. Equipment shall not contain materials that ignite into flames at operating or storage temperatures.

3.2.1.2.3. Explosive materials. Equipment shall not contain materials that explode at operating or storage temperatures.

3.2.1.2.4. Carcinogens. Equipment shall not contain materials identified by Occupational Safety and Health Administration (OSHA) in CFR Title 29 Part 1910 as cancer-producing substances (carcinogens).

3.2.1.2.5. Helium. Helium shall not be used as pressurizing gas in sealed units containing electron tubes. When necessary to use helium for leak detection purposes, exposure shall be limited to the time necessary for the test, followed by thorough purging.

Helium-3 shall not be used due to limited availability.

3.2.1.3. Combination of materials. Equipment shall contain no combination of materials that cause deterioration of any material contained in the equipment due to the effects of outgassing.

3.2.2. Recycled, recovered, environmentally preferable, or biobased materials.

Recycled, recovered, environmentally preferable, or biobased materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.3. Design and construction.

3.3.1. Operator adjustments. Equipment shall include built-in adjustments or compensating devices for any function or parameter that would exceed the specified tolerance within the calibration interval. Under all specified service conditions, the variation of any adjustment or control shall produce the desired control action to bring the equipment within tolerance.

3.3.2. Operator controls. Operating controls and indicators shall be readily accessible to the operator from the front of the equipment. The readings presented on the controls and indicators shall be available to the operator without conversion or calculation.

3.3.3. Self-test capability. The equipment shall perform an automatic diagnostic self-test at startup. The self-test shall determine operational readiness and isolate faulty modules.

At a minimum, the information provided shall indicate whether the equipment is functional or identify malfunctions. If failure occurs, the associated lowest replaceable unit (LRU) causing the malfunction shall be identified.

3.4. Digital control interface. A digital control interface shall be provided and shall meet the requirements as specified herein. The digital interface shall have the programmable capability to control each device function including all ranges, modes, and levels. The digital interface shall support control of the device without the need for any proprietary drivers or software. The syntax and style of programming commands shall conform to the Standard Commands for Programmable Instruments (SCPI). Primary power control and other non-measurement functions need not be controllable through the digital interface.

The digital control interface shall include the following:

a. USB connection conforming to the Universal Serial Bus Specification (USB) Revision 2.0.

3.4.1. USB interface requirements. A USB digital control interface that conforms to the standards specified by the Universal Serial Bus Implementers Forum (USB-IF) shall be provided.

3.5. Electrical power sources and connections.

3.5.1. Electrical power source. The equipment shall operate from the input power conditions specified herein.

3.5.1.1. Power consumption. The maximum power for operation of an Electronic Level component that requires an external single phase 120 Vrms power source shall not exceed 1500 watts.

3.5.1.2. Nominal and alternate power source. The equipment shall operate at 120 volts root mean square (Vrms), single-phase, 50 hertz (Hz) and 60 Hz source (see MIL-PRF- 28800G Table 1. Power source.). Equipment designed to operate from both external and internal power sources shall conform to specified performance and accuracy requirements when operated from the external source with the internal battery removed.

There shall be an indication of the selected power source. Alternate power source requirements are specified in a.

a. Direct current (DC) internal power source (see 3.5.1.2.5)

3.5.1.2.1. DC internal power source. The equipment shall be designed to operate from self-contained batteries. Maximum use shall be made of standard, nomenclature battery-power sources.

3.5.1.2.1.1. Battery restrictions. Use of mercury batteries is restricted and shall not be used in the equipment. Use of lithium batteries is restricted, however an exception is made for certain lithium batteries such as those used for memory backup (e.g., size double A or coin/button cell type). S9310-AQ-SAF-010 establishes the safety guidelines for the usage of lithium batteries and promulgates the exception requirements for their use.

3.5.1.2.1.2. Battery information. If batteries are used in the equipment, instructions shall be provided that describe the procedure for battery replacement, including the part number of the battery and description of the replacement process. If lithium batteries are used, proper disposal procedures shall be contained in the Use and Installation Manual and the Maintenance and Service Manual.

3.5.1.2.1.3. Battery state indicator. A battery state indicator shall be provided to indicate when the capacity of batteries used for primary power is low. The approximate remaining operating time for the low battery state shall be specified in the Use and Installation Manual.

3.5.2. Electrical power connections. The requirements specified herein shall apply to equipment rated at 10 amperes (A) rms, or less. When single-phase operation is specified, the equipment shall operate with a ground at the primary power source whether from an ashore site that has “grounded circuitry” or afloat where the ship has “ungrounded circuitry."

3.5.2.1. Input power cable. The input power cable shall be a detachable power cable normally provided by the manufacturer.

3.5.2.2. Battery operating and recharge time. Battery operating and recharge time shall be 10 hours of continuous operation and recharge in 8 hours or less.

Brown, Phillip B Jr CIV (USA) Was there information that should be here or just a formating error?

Brown, Phillip B Jr CIV (USA) Was there information that should be here or just a formating error?

3.6. Enclosure physical characteristics. A commercial-off-the-shelf (COTS) enclosure normally provided by the manufacturer that meets the requirements specified herein shall be provided. For the purpose of this CSS, the enclosure refers to the case for the entire system including accessories and controller. The enclosure provides protection for the individual system component during storage, handling, and use.

3.6.1. Dimensions. Maximum dimensions of the equipment including handles and covers, if any, shall not exceed 12 inches in height, 18 inches in width and 13 inches in depth. Additionally, each electronic level base cannot exceed 5 inches in height, 4 inches in width and 1.5 inches in depth

3.6.2. Weight. The maximum weight of the equipment including all covers and accessories shall not exceed 8 lbs. additionally, each electronic levels maximum weight shall not exceed 2 lbs.

3.6.3. Enclosure requirements. The degree of protection provided by the enclosure shall allow the equipment to pass the environmental tests applicable to the class as specified herein.

3.6.3.1. Corners. All corners shall be designed to preclude injury to personnel or damage to material. All corners shall be reinforced to protect the equipment from damage during shipping, handling and storage.

3.7. Transit case. A transit case shall be provided to protect the contained equipment and accessories during shipping and storage. The transit case is not an integral part of the equipment. It need not provide for operational capability of the equipment when enclosed. The physical characteristics of the transit case shall be as specified herein.

3.7.1. Transit case cover. The transit case shall have a cover that can be closed and fastened. Fasteners shall allow for quick opening. If the cover is removable, fasteners shall not interfere with cover removal.

3.7.2. Transit case handles. One or more handles shall be provided. The number and location of handles shall be such that the load distribution per handle shall not exceed 20 kg (44 lbs). Handles shall be located above the equipment center of gravity to ensure carrying stability

3.7.2.1. Hard transit case handles. The transit case shall include hinged handles with sufficient internal clearance to allow a block 44 mm (1.75 inches) by 106 mm (4.17 inches) in cross section with edges rounded to a 25 mm (1 inch) radius to pass through them.

The grip portion of the handles shall be of a nonmetallic material at least 89 mm (3.5 inches) in length with a 19 mm (¾ inch) diameter or other approved cross section that is shaped to fit the hand comfortably. Handles shall stop open at 90 degrees and have a retaining mechanism to keep them in the closed 90 degree position. Handles shall be recessed or protected. A handle located on the top of the enclosure shall be recessed to facilitate stacking.

3.7.3. Transit case accessory stowage. The transit case shall allow for the stowage of accessories, operating instructions, removable power cables, signal leads, and designated spares. Stowage shall not adversely affect the carrying stability of the equipment and shall be contained in a manner that prevents damage to the accessories or equipment during transit.

3.7.4. Transit case corners. All hard-edged corners shall be designed to preclude injury to personnel or damage to material. All corners shall be adequately reinforced to protect the instrument from damage during shipping, handling and storage.

3.7.5. Transit case insert. A custom cut, high density, polyethylene black polyplank foam case insert shall be provided to organize and provide robust protection of the equipment while stored in the transit case.

3.8. Marking and identification.

3.8.1. Equipment identification. All equipment, excluding small accessory items contained within a reusable pouch or container, shall be identified with the items specified in a through d.

a. Manufacturer name

b. Equipment model number with installed options

c. Equipment nomenclature

d. Serial number

3.8.1.1. Identification plate. An equipment identification plate shall be permanently affixed to the equipment enclosure when the enclosure also serves as the transit case.

The identification plate shall contain the information provided below in 3.8.1.1.1 Single case identification plate.

3.8.1.1.1. Single case identification plate.

a. Equipment model number with installed options

b. Equipment nomenclature

c. Manufacturer Commercial and Government Entity (CAGE) code

d. Serial number

3.8.1.2. Identification plate supplemental information. When accessories are required to meet the requirements of the CSS and the combination has a part or model number designation that differs from that of the main unit, there shall be a supplemental identification plate containing the following:

a. Part number of main unit and all accessories (excluding cables and adapters) comprising the equipment configuration.

b. Model configuration number.

Whether a configuration model designation is assigned or not assigned, all major accessories shall be marked as follows:

c. Part of number (p/o): Model number assigned to the equipment configuration or main unit model number, as applicable.

d. Serial number (s/n): Serial number assigned to the equipment comprising the set or the serial number of the primary instrument if a separate s/n is not assigned to the set.

3.8.2. Transit case identification plate. The equipment transit case shall include a permanently affixed identification plate that contains the information specified in 3.8.1.1 Identification plate. An acceptable method of attachment is to use 1/8” diameter solid or semi-tubular rivets and backup washers.

3.8.3. Nomenclature assignment. The nomenclature assignment shall be provided by the Government. Differential Level System.

3.8.4. Item unique identification (IUID). DFARS clause 252-211.7003 is invoked. A two dimensional Unique Identification (IUID) data matrix conforming to MIL-STD-130 shall be included on the identification plate.

3.9. Environmental requirements. Environmental performance requirements shall be as specified herein.

3.9.1. Environmental conditions. The equipment shall conform to the specified performance requirements, when subjected to the environmental conditions of this specification.

3.9.2. Temperature and humidity (T/H). The temperature ranges and humidity limits for both operating and not operating conditions shall be as specified herein. A relative humidity (RH) of 95 percent (with the applicable tolerance) shall be achieved in a non-condensing condition.

3.9.2.1. Temperature, not operating. The equipment shall conform to the specified performance and accuracy requirements after being subjected to not operating temperatures in the range of -40 to 71 ºC.

3.9.2.2. Temperature, operating. The equipment shall conform to the specified performance and accuracy requirements while operating at temperatures ranging from 10 to 40 ºC.

3.9.2.3. Humidity. The equipment shall conform to the specified performance and accuracy requirements for conditions where the relative humidity is 5 to 95±5 percent in the temperature range of 10 to 30 ºC. At temperatures below 10 ºC, the humidity is uncontrolled, but the equipment shall conform to the specified performance requirements (after the specified warm-up period) and shall withstand the effects of humidity up to 100 percent. The equipment shall also be subjected to conditions where the relative humidity is 5 to 85±5 percent in the temperature range of 30 to 40 ºC, and where the relative humidity is 5 to 60±5 percent in the temperature range above 40 ºC. -51 to 71 ºC. The equipment shall also be subjected to conditions where the relative humidity is 5 to 75±5 percent in the temperature range of 30 to 40 ºC, and where the relative humidity is 5 to 45±5 percent in the temperature range above 40 ºC (as appropriate for the specified class).

3.9.3. Mechanical shock.

3.9.3.1. Bench handling. The equipment shall conform to the specified performance and accuracy requirements and there shall be no damage to any controls, indicators, or fuseholders when subjected to the MIL-PRF-28800G paragraph 4.5.5.4.3 Bench handling test.

3.10. Safety. The equipment shall meet the safety requirements of IEC 61010-1. For safety, all accessible surfaces of the equipment shall be at ground potential. The power cable shall include a safety ground conductor. Disconnecting the safety ground shall also disconnect the power conductors for drawer assemblies.

3.11. Calibration. The EL shall meet the calibration requirements as specified herein.

For the purpose of this CSS, calibration refers to the process of comparing a test instrument with a calibration standard to determine the indicated error at specified test points. Alignment refers to the process of characterizing and adjusting a test instrument to cause it to indicate within its specified accuracy limits.

3.11.1. Calibration interval. The minimum interval between calibrations shall be 12 months. At the end of this interval, a minimum of 85 percent of the units shall remain in tolerance. The vendor shall substantiate that the EL will meet the desired minimum interval or any interval beyond that by providing the statistical data used to derive the interval.

3.12. Workmanship. The manufacture, assembly, and packaging of the items covered by this CSS shall be representative of the best commercial practices and shall conform to the requirements of this CSS. All items will remain securely held in place during normal transit. Adequate protection will be afforded for the equipment on all sides to avoid transient damage.

2.2. Order of precedence 2

3.2.2. Recycled, recovered, environmentally preferable, or biobased materials 4