SOW_ResCalibration_Standards_QuantitiesShipWAWF-2016-08-24-Rev-M.docx

Statement of Work for Resistance Calibration Standards

1.0 Introduction:

The use of the resistance calibration standards sought on this three (3) year IDIQ procurement is in support of Naval Air Systems Command (NAVAIR) Aviation Fleet Intermediate Calibration Activities, Fleet Training Activities and Aviation Navy Calibration Laboratories (NCLs) to support Aviation Organizational and Intermediate (I) level maintenance assets. The standard resistors listed here are used in more than sixty Instrument Calibration Procedures (ICPs). They are intended for use in but not limited to the calibration of ohmmeters, current calibrators, digital voltmeters, programmable current sources, fixed step attenuators and variable attenuators. It should be understood that throughout this document the terms “standard” or “calibration standard” are referring to articles of physical hardware used to calibrate or verify the operation of devices that use electrical energy.

2.0 Background:

The items sought on this procurement are replacement for items currently in the NAVAIR METCAL inventory that have become defective and need replacement.

3.0 Scope:

Table 1: Resistance Standards

Salient Characteristics

CLIN 0001 through CLIN 0012 General Requirements for all standard resistors

Specific references to MIL-PRF-28800F shall be called out in this statement of work. Only those paragraphs called out and their sub-paragraphs within MIL-PRF-28800F shall be applicable to this procurement.

Restricted Materials: Each unit provided by the offeror shall be in compliance with the requirements of MIL-PRF-28800F, Paragraph 3.3.3, Restricted Materials.

Workmanship: The construction of the units sought in this procurement shall conform to best commercial practices for electrical wiring which at a minimum shall conform to MIL-PRF-28800F Paragraph 3.3.3, internal wiring and MIL-PRF-28800F paragraph 3.3.4 internal cooling. All units shall be suitable for benchtop placement for use and storage.

CLIN 0001 - SR1050-10M or equivalent Range: Various configurations and values shall be selectable with the use of resistors connected in series, parallel, or a combination of both (R, 1/R, 10R).

Switches: Must be commercially available. External shorting and/or paralleling bars shall not be used.

No Oil Bath Required: Resistance Transfer must be able to meet specification as a stand-alone standard. No oil baths should be utilized to for the transfer standard to meet the required specifications Transfer Accuracy: Deviation no greater than ±2 ppm Adjustment Accuracy: Better than ±20 ppm Stability: 20 ppm/year Breakdown Voltage: 400 Vdc between terminals and case.

Environmental conditions: Operating: 10°C to 40°C; Storage: -40°C to 70°C Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0002 - SR1050-1M or equivalent Range: Various configurations and values shall be selectable with the use of resistors connected in series, parallel, or a combination of both (R, 1/R, 10R).

Switches: Must be commercially available and easily replaceable. External shorting and/or paralleling bars shall not be used.

No Oil Bath Required: Resistance Transfer must be able to meet specification as a stand-alone standard. No oil baths should be utilized to for the transfer standard to meet the required specifications Transfer Accuracy: ±2 ppm Adjustment Accuracy: Better than ±20 ppm Stability: 20 ppm/year Breakdown Voltage: Equal to or greater than 400 Vdc between terminals and case.

Environmental conditions: Operating: 10°C to 40°C; Storage: -40°C to 70°C Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0003 through CLIN 0005 Specifications Resistance Value: Twelve equal four-terminal resistors connected in series. Values of 10 ohm, 100 ohm and 100 kilo-ohm required Switches: No switches shall be used. Connections to the resistors shall be made through multiple binding posts. Additionally unit shall have binding posts for guard and ground resistance No Oil Bath Required: Resistance Transfer must be able to meet specification as a stand-alone standard. No oil baths should be utilized to for the transfer standard to meet the required specifications Shorting Bars and Compensation Networks: Unit must be able to be compatible with SB103 Shorting Bars, and SPC102 Series Parallel Compensation networks for the connecting resistors in parallel or series-parallel combinations. The Navy currently has a large useable inventory of these shorting bars and networks Initial Accuracy: Deviation not greater than ±20 ppm Stability: 10 ppm/year Maximum applied voltage: Equal to or greater than 100 Vdc between terminals and case.

Environmental conditions: Operating: 10°C to 40°C; Storage: -40°C to 70°C Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0006

Nominal Value - 100 kilo-ohm, deviation < 15 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 100 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0007

Nominal Value - 100 ohm, deviation < 15 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 2 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0008

Nominal Value - 10 kilo-ohm, deviation < 15 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 30 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0009

Nominal Value - 10 ohm, deviation < 20 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 1V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0010

Nominal Value – 1 kilo-ohm, deviation < 10 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 10 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0011

Nominal Value – 1 Mega-ohm, deviation <22 ppm, Stability: 20 ppm/year, maximum applied voltage of at least 100 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0012

Nominal Value – 1 ohm, deviation < 1 ppm, Stability: 10 ppm/year, maximum applied voltage of at least 1 V.

Technical Documentation: Provide standard commercial technical manual or data sheet that is typically used to describe the operation and maintenance of the calibration standard.

CLIN 0006 through CLIN 0012 Specifications

Physical Configuration: The Standard Resistors shall consist of discreet and independent resistors mounted in individual boxes/cases. One individual box/case for each resistor on each CLIN 0006 through CLIN 0012.

Terminals: The binding posts should offer low thermal emf and low resistance. A case ground terminal shall be provided.

Environmental conditions: Operating: 10°C to 40°C; Storage: -40°C to 70°C

4.0 Applicable Documents and Specifications

Table 5-1 Applicable Documents and Specifications

http://assist.daps.dla.mil/quicksearch/ June 1996

5.0 Delivery of Technical Data:

5.1 All equipment acquired on CLINS 0001 through 0012 shall be provided with a calibration certificate or certificate of conformance traceable to the National Institute of Standards and Technology or equivalent recognized national organization accredited to ISO 17025.

5.2 When the bill of materials that defines any of the calibration standards procured on CLINS 0001 through 0012 changes due to internal component substitution and/or when changes in the electrical schematic diagram defining the design of an item occurs and/or the component layout of internal components is altered from the initial items procured at time of award of this procurement the contractor shall furnish a Commercial Item Change Notice to the US Navy.

5.3 Technical Manuals and/or data sheets shall be provided with each resistance calibration standard procured. This technical data is to provide operation and/or maintenance instructions for the commercial items procured in this effort.

6.0 Warranty Requirement

6.1 All items procured shall have the standard commercial warranty offered by the original manufacturer which shall not be less than one year in duration.