PD_Rev2_26M-054A-PR_DedicatedOxygenCleanSystem.pdf

26M-054-PR

January 5 2026

Draft

Purchase Description For

Dedicated 10,000 psi Oxygen Clean System

1.0 Scope

This acquisition is for an oxygen clean pneumatic pressure calibrator. This standard is a transducer/digital gauge-based calibrator to be used in the Air Force Metrology and Calibration Program to calibrate oxygen clean TMDE such as pressure gauges, pressure transducers, and other similar pressure measuring test instruments. The Dedicated Oxygen Clean System (DOCS) will connect to a regulated Nitrogen source.

The DOCS will operate in gauge mode to generate gas pressures for pressure monitoring test instruments.

The DOCS is intended for laboratory use only.

2.0 Performance Requirements

2.1 Oxygen Clean Requirements: The DOCS shall be received oxygen clean from the manufacturer. The DOCS shall be cleaned to contamination level which is no greater than l milligram (mg) per square foot. ASTM G93/G93M states that this specification is Level A cleanliness (ASTM G93/G93M 11.4.2.3). The DOCS shall come with a certificate stating the standard and all components that come in contact with the test media are oxygen clean to ASTM G93/G93M Level A requirements.

2.2 Contamination: The DOCS (under normal operating conditions) shall not introduce any contaminants to the System, Standard, and DUT that would react with liquid and gaseous pure oxygen.

2.3 Cleaning Requirements: All transducers/digital gauges shall be capable of withstanding the forces generated by the oxygen cleaning system and solvents used. Oxygen cleaning system:

King Nutronics 3646-1-104.

2.4 Operations: The DOCS is required to feature a transducer-based digital readout. The booster shall be pneumatically operated.

2.5 Range: The DOCS shall be capable of generating, controlling, and measuring pressure between

600 to 10,000 psig.

2.6 Pressure Uncertainty: The DOCS shall have an uncertainty of at most the following:

2.6.1 ±0.05% F.S. (Range: 6,000 psig) ±0.05% F.S. (Range: 10,000 psig)

2.6.2 Uncertainty shall include, but not limited to the combined effects of, hysteresis, repeatability, linearity, and temperature compensation and reference standard uncertainty of 0.01% FS.

2.6.3 The DOCS shall be capable of maintaining its uncertainty for a minimum of 12 months.

2.6.4 No periodic re-zeroing against a higher-level standard shall be required to maintain the requirement in 2.6.1.

2.7 Resolution: The DOCS shall be able to display a resolution of one-tenth the uncertainty for each engineering unit, user adjustable.

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2.8 Input Source: The DOCS shall be able to be connected to an external pressure source of at least

1,100 psig or higher.

2.9 Output Pressure: The DOCS shall be able to supply a maximum pressure of 10,000 psig.

2.10 Units: The DOCS shall, at a minimum, operate and display in the following units: psig, bar, kPa and MPa.

2.11 Maximum Number of Standards: The DOCS shall not exceed 2 digital pressure gauges or transducers.

2.12 Environmental Requirements: The DOCS shall be able to operate or be stored in the following environmental conditions:

2.12.1 Operating Temperature: 60 °F to 80 °F

2.12.2 Operating Humidity: 20% to 50% RH

2.12.3 Storage Temperature: 40 °F to 150 °F

2.12.4 Storage Humidity: 0 to 90% RH

2.13 Shipment: The DOCS shall be capable of meeting all requirements of the purchase description after shipment via commercial carrier. Any packaging needed to meet this shipping requirement shall be provided.

2.14 Warm Up Time: The DOCS shall require a warm-up time of not greater than 30 minutes.

3.0 Functional Requirements

3.1. Display: The DOCS pressure readout shall have an alpha-numeric display. It shall be an illuminated vacuum fluorescent, LED, LCD, or plasma display.

3.2. Instrument Controls: All modes and functions of the equipment shall be operable using front or upward facing controls. The locations and labeling of indicators, gauges, controls, switches, and valves shall provide for maximum clarity and easily understood operation without reference to tables, charts, or diagrams. If the controls are in a menu format, the menu structure shall be organized with related controls grouped together. If a menu format is not used each main parameter shall have its own selection key and the control buttons shall be logically organized on the front face.

3.3. Operator Calibration: The operator shall be able to verify the pressure indications of the transducers/digital gauges are within the required uncertainties of 2.6.1 when compared to a higher-level standard. The higher-level standard shall provide the pressure generation and control.

The DOCS controller/booster shall not be required to verify the transducers/digital gauges accuracy.

3.3.1. Calibration Alignment: The transducers/digital gauges shall have a calibration mode that allows the user to align the transducers/digital gauges to the higher-level standard.

3.3.2. Calibration Coefficients: The calibration mode shall utilize a maximum of a second order polynomial fit.

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3.4. Head Correction: The DOCS reference level shall be clearly identified on the unit. The DOCS’s Standard and Test Instrument pressure ports shall be at the same elevation to eliminate head height error.

3.5. Stability: The DOCS shall be stable within 60 seconds after achieving set point.

3.6. Gas Booster Operation: The DOCS shall include a gas booster able to boost a minimum pressure supply of 800 psi to the maximum pressure of 10,000 psi. The gas booster shall be pneumatically operated.

4.0 Physical/Mechanical Requirements

4.1 Dimensions and Weight:

4.1.1 The DOCS shall measure no more than 24 inches on any side.

4.1.2 The DOCS shall weigh no more than 75 lbs.

4.1.3 The gas booster, if separate from the DOCS, shall weigh no more than 100 lbs.

4.2 Pressure Connections: The DOCS test port shall be a 1/4 inch gland and collar high pressure pneumatic connection, or the DOCS shall include necessary adapters to connect to a gland and collar style connection.

4.2.1 Gas Type: The DOCS shall operate using Ultra High-Purity (UHP Grade

99.999%) Clean Dry Nitrogen as a gas type.

4.3 Design and Construction: The DOCS shall be designed and constructed of materials that meet the requirements of this specification and in accordance with the best commercial practices for industry approved equipment. It shall be the contractor’s responsibility to assure the government that such design objectives as reliability, accuracy of operation, maintainability, and ease of operation have been given due consideration in the manufacturing of this equipment. All parts such as shafts, bearings, regulators, switches, controls, connectors, etc., shall have proper clearance and adjustments. They shall work together so that the equipment shall supply the rated requirements without unnecessary strains, vibrations, and overheating. They shall be able to withstand the conditions met in shipping, storage, installation, and services. All materials and parts of this equipment shall be capable of withstanding environmental testing requirements of this specification.

4.4 Pressure Safety Features: The DOCS shall have Pressure Safety Features to prevent damage to the DOCS and the DUT from damage due to rapid changes in pressure.

4.5 Vent Valve: A Vent Valve shall be supplied and located so that it can be easily actuated.

The Vent Valve shall be manually operated and shall vent the entire pneumatic system to atmospheric pressure without pressure transients which could shock or damage the DUT or the DOCS transducers/digital gauges.

4.6 Overpressure Alarm: The DOCS shall be equipped with an audible alarm which will alert the operator to an overpressure condition.

4.7 Power Requirements: The DOCS shall operate on a line power of ~115 VAC 50/60 Hz single phase or battery operated.

4.7.1 The DOCS shall not use more than one outlet.

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4.7.2 Necessary detachable power cords shall be provided.

4.8 Electrical Protection: If the DOCS operates on AC line power, it shall have a fuse or circuit breaker to protect it in the event of excessive current. The AC line power fuses shall be user serviceable without removing any covers /panels or voiding a manufacturer’s service warranty.

4.9 Shipping/Carrying Case: Reusable cases shall be provided with the DOCS for the purpose of shipping the necessary components of the system that require calibration and storage of components that do not require calibration. The cases shall be rugged, rigid, waterproof, and capable of withstanding shock and vibration from day-to-day shipping.

4.9.1 Cases: Cases shall be secured using latches and have carrying handles capable of supporting the weight of all components. Shipping case shall have cushioning and mounting provisions inside the case that provides protection to prevent damage from normal handling during transportation. The cases interior material shall be manufactured from a material that will not corrode any part of the components; the material shall be oil resistant and not deteriorate.

4.9.2 Portable: The case shall have retractable handles and wheels for transportation if the components inside the case are greater than 50 pounds.

4.10 Additional Hardware: Additional hardware required to make this system function and/or be calibrated as identified by this purchase description shall be provided by the offeror.

4.11 Individual Unique Identifier Designation: This item shall be clearly labeled with a model number, serial number, and manufacturer’s name. Unique item identification labeling shall follow Item Identification and Valuation requirements as stated in the contract.

5.0 Firmware/Software:

5.1 Software/Firmware Identification: Software/firmware version shall automatically display upon startup. All software/firmware used in conjunction with instrument shall be identified by Name, Version, and Date; which is to be displayed upon startup or located in an “About” menu in the software/firmware.

5.2 Software/Firmware Warranty:

5.2.1 The contractor shall warrant that the software/firmware product meets this purchase description and is free from defects in design and operation and will perform to stated specifications within this purchase description.

5.2.2 The contractor shall (at no additional cost) update or replace the software/firmware product as necessary to correct any deficiencies identified in the software/firmware. Replacement software/firmware shall meet or exceed the requirements in this purchase description. This condition applies to all units purchased under this contract.

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6.0 Operator’s Manual: A Commercial Off the Shelf (COTS) operator’s manual shall include the following:

6.1 Individual Component Listings: The manual shall list the field replaceable components, which includes OEM manufacturer’s name, and OEM part number. If applicable, include component range and uncertainty.

6.2 Calibration and Alignment Procedures: The manual shall have calibration (verification) and alignment procedures for calibrating and aligning the transducers/digital gauges, and any other component that requires periodic calibration.

6.3 Remote Command Listings: If applicable the manual shall list the input/output parameters, command strings and other pertinent data required to accomplish remote operation of the

DOCS.

6.4 Diagrams: Block diagrams of the following systems in the DOCS:

6.4.1 Booster

6.4.2 Controller

7.0 Deliverable Component List: A comprehensive list of all components expected with the delivery shall be provided with each shipment. The list at a minimum shall include the P/N, noun, and quantity.

8.0 Environment, Safety, and Operational Health: A combination of the system manual, other documentation, and/or the system itself shall identify potential environment, safety and operational health hazards and how they are mitigated when the design itself cannot mitigate them. This will be accomplished through stating the hazard and accompanying mitigation through the use of safety devices, use of warnings, or use of special operational procedures to counter such hazards.

9.0 Warranty & Technical Support: A warranty and technical support normally offered by the vendor for this product shall be provided with the unit. The warranty shall last at least two years from delivery.

10.0 Testing: The DOCS will be inspected and accepted at a destination specified elsewhere in this contract. The item will be checked with test equipment and parameters equal to or better than those required assuring specified performance requirements are met. Test equipment has first echelon certification directly traceable to the National Institute of Standards and Technology (NIST) or other AFMETCAL approved sources where required. Tests will be performed to ensure the DOCS meets or exceeds all of the requirements of this purchase description. Such testing does not relieve the contractor of performing all inspections and quality control checks at the point of fabrication as necessary to assure performance as specified.

Attachment:

Data Requirements