SSS_Rev0_25M-079A-PR_Pneumatic Pressure Calibrator 10K psi.docx

25M-079A-PR

March 14, 2024 Rev 0

PURCHASE DESCRIPTION

FOR

Pneumatic High Pressure Controller

1.0 SCOPE: For this Purchase Description (PD), the Pneumatic High Pressure Controller will be referred to as PHPC. The PHPC will replace the PGC-10000-AF, which contains the following components: RPM4 A70MS/A20MS-AF, GPC1-10000-AF, GB-152-AF, AG-152. The manufacturer (Fluke) has discontinued this item and ceased its support of key components. This acquisition will aid AFMETCAL in maintaining support for a multitude of different pneumatic pressure measurement equipment across the Air Force. The new standard would support pressure gauges, barometers, pressure transducers and other similar high pressure TMDE. The PHPC shall calibrate pressure TMDE up to 10,000 PSI in absolute and gauge mode.

2.0 PERFORMANCE REQUIREMENTS:

2.1 Operations: The PHPC is required to feature a transducer-based digital readout. The booster shall not operate via physical pumping from the technician or via the loading of weights such as a deadweight tester to achieve a specified pressure point. Users are expected to interact solely with the system's main display panel during operation.

2.2 Range: The PHPC shall be capable of generating and measuring at least the following pressure range in gauge and absolute:

2.2.1 0 - 10,000 PSIG

2.2.2 Atmospheric Pressure - 10,000 PSIA

2.3 Pressure Uncertainty: The PHPC shall have an uncertainty of at least the following:

2.3.1 ± 0.02% I.V. or ± 0.15 psi, whichever is greater (Range: 3,000 psi) ± 0.02% I.V. or ± 0.50 psi, whichever is greater (Range: 10,000 psi)

2.3.2 Uncertainty shall include, but not limited to the combined effects of pressure, hysteresis, repeatability, linearity, and temperature compensation.

2.3.3 The PHPC shall be capable of maintaining its uncertainty for a minimum of 12 months.

2.3.4 No autozero requirement shall be necessary to maintain the requirement in 2.3.1.

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

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

2.5.1 Operating Temperature: 64 to 82°F

2.5.2 Storage Temperature: 32 to 122 °F

2.5.3 Operating Humidity: 0 to 70% RH

2.5.4 Storage Humidity: 0 to 90% RH

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

3.0 FUNCTIONAL REQUIREMENTS:

3.1 Display: The PHPC shall have an alphanumeric display. It shall be an illuminated vacuum fluorescent, LED, LCD, or plasma display. All information required by the user to operate all modes and functions shall be accessible through the front panel interface.

3.1.1 Front Panel Controls: All modes and functions of the equipment shall be operable using front panel controls. The locations and labeling of indicators, controls, and switches 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 efficient 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 panel.

3.1.2 Units: The PHPC shall have, at a minimum, the following units of pressure:

3.1.2.1 PSI, kPa, MPa, Bar, and at least one user defined unit.

3.1.3 Head Correction: The PHPC shall allow the user to enter a head correction through the front panel by entering the difference in height between the Device Under Test (DUT) and the PHPC. This feature shall not require a password to access and shall be reached by no more than two inputs from the main menu.

3.1.3.1 The PHPC shall automatically correct for this difference in height to determine the pressure at the DUT reference level up to a maximum of 3 feet.

3.1.3.2 The PHPC shall indicate whether or not a head correction is being applied.

3.1.3.3 For DUTs that are lower than the reference level the correction entered will be a negative number.

3.1.3.4 For DUTs that are higher than the reference level, the correction entered will be a positive number.

3.1.4 Stability Limit: The PHPC shall have a user adjustable stability limit.

3.1.4.1 Stability Indication: Once the set stability limit has been achieved, a visual indication is given on the PHPC.

3.1.4.2 Stability Specification: The PHPC shall become stable to within 0.01% Rdg/sec. at maximum pressure in five minutes or less. This is based as a closed system (No DUT is attached) and starts when the pressure set-point has been achieved.

3.1.5 Medium: The PHPC shall operate using any non-corrosive gas as the test fluid.

3.1.6 Operator Calibration: The PHPC shall have a Calibration Mode able to verify that the pressure indications are within the required tolerance when compared to a higher-level standard. The higher-level standard shall provide the pressure generation and control. The Calibration Mode shall display pass/fail conditions and allow for adjustment of transducer coefficients when required.

3.1.6.1 Calibration Mode: The Calibration Mode may be a vendor supplied PC based software.

3.1.6.2 Calibration Coefficients: The operator calibration shall utilize a maximum of a second order polynomial fit.

3.2 Gas Booster Operation: The PHPC will include a gas booster able to boost a pressure supply of 500-psi or higher to the maximum pressure of 10,000-psi. The booster must cycle automatically and require no operator intervention once set to the desired output pressure.

3.2.1 The booster shall be mounted independently of the main controller.

3.2.2 The booster shall be designed to produce sound levels below 100 decibels (dB) during its regular operations.

3.2.3 The PHPC shall be equipped with a supply of non-corrosive gas reserve volume of 500 psi or higher for the booster’s operation.

3.3 Reference Level: The PHPC reference level shall be clearly identified on the unit.

3.4 Measurement System: The PHPC shall consist of no more than two (2) transducers, and one barometer. The barometer shall not require calibration and shall only be utilized to measure atmospheric fluctuations to simulate either absolute or gauge measurements.

3.4.1 Automatic Transducer Selection: If more than one transducer is included in the system, the PHPC shall automatically select the appropriate transducer depending on the range of the device under test if all transducers are encased.

3.4.2 Manual Transducer Selection: The PHPC shall have the ability for the User to manually select and use a specific transducer.

3.4.3 Transducer Indication: The PHPC shall clearly indicate which transducer is being used.

3.5 Pressure Control: The PHPC control system shall be equipped with a fine adjustment for setting cardinal pressure values specific to the device under test. The resolution of this adjustment shall allow for a setting of pressure within 50% of the system uncertainty for each range listed in 2.3.1.

3.6 Overpressure Protection:

3.6.1 The PHPC shall have at a minimum an audible alarm that will sound when the system reaches approximately 105% of the active transducer’s full-scale range.

4.0 MECHANICAL & PHYSICAL REQUIREMENTS:

4.1 Size and Weight: The PHPC and all accessories shall be portable.

4.1.1 The PHPC shall not weight more than 100lbs.

4.1.2 The PHPC shall not be longer 22 inches on any side.

4.2 Shipping/Carrying Case: Reusable case shall be provided with the PHPC. The case shall be rugged, rigid, waterproof, and capable of withstanding shock and vibration from day-to-day shipping.

4.2.1 Case: Storage Case shall be secured using latches, and have carrying handles capable to support the weight of all components. Storage case shall have cushioning and mounting provisions inside the case that provides protection to prevent damage from normal handling during transportation. Storage case 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.

4.2.2 Portable: The storage case shall have retractable handles and wheels for transportation.

4.3 Pressure Connections: The PHPC shall be equipped with standard high pressure pneumatic connections to a test port to allow connection of a test instrument or a calibration standard.

4.4 Construction: The PHPC 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 manufacture 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.

4.5 AC Power Rating: The power required to operate the PHPC shall be ~120 VAC at 50/60 Hz single phase.

4.5.1 The PHPC shall not use more than one outlet.

4.5.2 Necessary detachable power cords shall be provided.

4.6 Individual Unique Identifier Designation: The PHPC 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. The PHPC shall be clearly labeled with an expiration date of the Warranty Agreement.

4.7 Electrical Protection: If the PHPC 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.

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.

5.3 Additional Hardware: Additional hardware required to make this system function as identified by this purchase description shall be provided by the offeror.

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 Deliverable Component Listings: The manual shall contain a comprehensive list of all components expected with the delivery.

6.3 Calibration and Alignment Procedures: The manual shall have calibration (verification) and alignment procedures for calibrating and aligning the pressure transducers, temperature sensors, and any other component that requires periodic calibration.

6.4 Remote Command Listings: The manual shall list the input/output parameters, command strings and other pertinent data required to accomplish remote operation of the PHPC.

6.5 Maintenance: The manual shall include preventative maintenance inspection procedures and intervals required for proper operation of the unit.

6.6 Diagrams: Block diagrams of the following systems in the PHPC:

6.6.1 Booster

6.6.2 Controller

7.0 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.

8.0 TESTING: The PHPC 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. Test will be performed to assure the HGC 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