SCAT_4448.pdf

29 October 2018

NRL 5524

PURCHASE DESCRIPTION

MEGOHMMETER

SCAT: 4448

Solicitation No: SPRMM1-19-R-HA74

1.0 GENERAL This procurement requires a self-contained Megohmmeter to measure insulation resistance and directly indicate resistance values from 50 kOhms to 100 GOhms.

2.0 CLASSIFICATION The equipment shall meet the requirements of MIL-PRF-

28800F, Class 3, for Navy shipboard, submarine, shore and Marine Corps applications with the following exception:

2.1 Relative humidity requirement is limited to 75% ±5%.

3.0 OPERATIONAL REQUIREMENTS The specifications provided below are the minimum requirements and accuracies that will meet the Government's need. The equipment shall at least meet these requirements and accuracies and may provide better performance.

3.1 Test Voltages

3.1.1 Range: DC voltage selectable over the range of 50, 100, 250 and 500V.

3.1.2 Accuracy: ±3% all ranges

3.1.3 Voltage warning indicator: There shall be a front panel indicator warning when voltage is present at the equipment terminals.

3.1.4 Short circuit current: Maximum delivered current ≤6mA

3.2 Resistance

Resistance Range (Ohms)

Drive Voltage Resistance Accuracy

50 k to 10 G 50 DCV ±5% 1 M to 100 G >50 DCV ±5%

3.3 Display The display shall be digital with at least 3.5 digits and 0.5-inch character height.

3.4 Terminals The equipment shall be provided with TEST, GUARD and GROUND terminals. The TEST terminal shall be sheathed floating banana jack.

4.0 GENERAL REQUIREMENTS

4.1 Environmental

4.1.1 Operating temperature: 0°C to +50°C

4.1.2 Non-operating temperature: -40°C to +71°C

4.1.3 Operating Altitude: 3000m

4.2 Power Source MIL-PRF-28800 nominal power source requirements are invoked.

Maximum power consumption is 30 watts.

4.3 Weight 5kg (11lb) maximum.

4.4 Dimensions W 10” x H 6” x D 9” nominal

4.5 Lithium Batteries Per Battery Restrictions Per MIL-PRF-28800F, Lithium and

Mercury batteries are prohibited without prior authorization. If equipment qualifies for one or both of the exceptions stated below, then the offeror shall submit the required information at the time of submission of proposals. If equipment does not qualify for an exception, then a request for approval for the use of Lithium and Mercury batteries shall be submitted with production lot delivery, after contract award. Approval shall apply only to the specific model proposed.

Exception 1: Per NAVSEA S9310-AQ-SAF-010, the use of non-rechargeable lithium coin cell batteries meeting the following criteria is approved for all uses and does not require individual testing and review by the Naval Ordnance Safety and Security Activity (NOSSA).

- Unmodified, commercially available off-the-shelf (COTS) item;

- Used in single-cell configuration;

- Maximum nominal output of 3 Volts;

- Maximum rated capacity of 1 Ah.

The coin cell manufacturer, part number, nominal voltage, and rated capacity shall be provided at the time of submission of proposals.

Exception 2: Per NAVSEA S9310-AQ-SAF-010, the use of COTS electronics and equipment powered by lithium ion rechargeable (secondary) batteries meeting the following criteria is approved for all uses and does not require individual testing and review by NOSSA.

- Unmodified, COTS battery;

- Underwriters Laboratories (UL) listed;

- in the device as recommended by the manufacturer. Modifications to the devices may only be made in accordance with the manufacturer’s recommendations; e.g., addition of memory;

- Recharged only by devices expressly designed for recharge of the specific battery in use;

- No more than four cells in series (less than or equal to 18-Volt output);

- Rated for no more than 100 Watt-hours, as listed in the manufacturer’s specification or calculated by multiplying the capacity in Ah by the maximum working (nominal performance) voltage.

The lithium ion rechargeable cell manufacturer, part number, configuration (number of cells in series), nominal voltage and rated capacity shall be provided at the time of submission of proposals.

4.6 Calibration The calibration interval shall be 12 months minimum. The equipment shall be within all accuracy requirements specified herein, with an 85% or greater confidence factor following a calibration interval of 12 months.

4.6.1 Calibration Procedure: The procedure, software and special interfaces/adapters that are needed for the equipment calibration shall be provided.

4.6.2 Source Codes: Any electronic or software codes necessary to communicate with, modify internal operating parameters, or impose calibration correction factors on any proposed instrument model shall be provided to the Government at no additional cost.

4.6.3 Documentation: A calibration certificate showing traceability to NIST shall be provided. A calibration label shall be affixed to the equipment.

4.7 Wireless Connectivity Wireless interfaces shall be disabled.

4.8 Enclosure/Transit Case The equipment enclosure/integrated transit case shall provide protection for the contained system components during storage, handling, and use. The instrument enclosure shall provide accommodations for all accessories and the operation manual.

4.9 Accessories Shielded test leads compatible with the equipment input terminals shall be provided. Accessories shall be provided with carrying case. A plastic laminated accessory inventory list shall be provided and shall be attached to the case in such a manner as to minimize the potential for its physical damage. The case shall be marked in accordance with the reusable pouch or container requirements of MIL-PRF-28800F.

4.10 Technical manual The maintenance philosophy for this unit shall be level 2 (per

MIL-PRF-28800F) and require maintenance to the module level of the unit. The technical manual shall conform to the level 2 maintenance philosophy. This level would be used for most equipment where maintenance and repair is an expected phase of equipment lifecycle. Board level maintenance and troubleshooting information is required. A Use and Installation manual (Operator’s Manual) shall be provided separately. Maintenance and Servicing manual shall be provided to two levels of maintenance, unit operational verification level and the module level.

Information required for performance verification shall include:

• Instructions to verify equipment performance,

• List the equipment required for verification tests,

• Step-by-step instructions for test connections,

• Acceptable result criteria,

• Calibration information,

• Self-test routines.

Maintenance information shall include:

• Parts lists to the component level,

• Schematics and component layout drawings,

• Block and schematic diagrams.

• List of required test equipment and connection diagrams, and

• Sequential instructions for disassembly, repair, replacement, and reassembly shall be provided.

• Board level maintenance and troubleshooting information,

• Step-by-step instructions for troubleshooting and fault isolation,

• Expected signal levels,

• Test data sheets will be included, and as required,

• The instructions will define localizing a defective circuit card.

Parts lists shall include:

• Parts lists shall be shown on illustrations or a separate listing that includes an index or reference to other illustrations.

• Part number, cage code, and generic description.

The technical manual shall be provided in both printed and electronic formats.

The printed format shall be otherwise normally provided. The electronic format shall be in Portable Document Format (PDF) - ISO 32000-1:2008. Two separate CD/DVDs are required, one shall contain the Use and Installation manual and one shall contain the Maintenance and Service manual.

The statement of copyright release:

“REPRODUCTION AND DISTRIBUTION OF THIS TECHNICAL MANUAL IS

AUTHORIZED FOR UNITED STATES GOVERNMENT PURPOSES.”

shall be printed in the first two pages of each technical manual and on the surface of the CD/DVD supplied.

4.11 Training materials Training materials that demonstrate the features, detailed operations and procedures with step-by-step instructions for using the equipment shall be provided. The training material shall be delivered in technical manual or interactive CD-ROM formats.

4.12 Additional Requirements

4.12.1.1 Equipment: Per MIL-PRF-28800F, a human readable label shall be provided for all production lot units conforming with MIL-STD-130N and permanently affixed on the equipment in an easily readable location. Required fields on the label are; CAGE, part number, and serial number. Size of the label shall conform to the size of the equipment.

4.12.1.2 Transit Case: If a transit case is required, per MIL-PRF-28800F a human readable metal plate shall be provided for all production lot units conforming with MIL-STD- 130N and permanently affixed to the front of the transit case. Required fields on the label are; CAGE, part number, and serial number. Size of the label shall conform to the size of the case. Pressure sensitive adhesive transfer tape is required to hold the plate to the hard transit case such as 3MTM 9472LE. Soft transit cases also require labeling with permanent placement such as a metal plate affixed with rivets, screws or adhesives.

4.12.2 Shipping container: For production lot units the package or carton containing the equipment for shipment shall be marked per MIL-STD-129P.

4.12.3 Other Additional Requirements: Shall be specified in the CDRL of the solicitation.