I- Level High Flow Gas Calibrator
Interested companies who may have a single box solution commercially available: When responding to this configuration, please provide, Original Equipment Manufacturer (OEM) Part Number (P/N), general product information.
Interested companies who have an existing single box capable of being modified to meet the specification as listed below: When responding to this configuration, please provide, OEM P/N, general product information on what the baseline model would be.
Primary Point of Contact.: Richard J. Murphy, Contract Specialist richard.j.murphy3@navy.mil Phone: 732-323-2749
Please forward any comments, questions, and concerns regarding the specification or general interest information to: Eric Murphy, Contract Specialist (732) 323-2749. All corporate and proprietary information should be so marked and will be fully protected to the extent allowed. This RFI is for planning purposes only and shall not be construed as a request for proposal or as an obligation on the part of the Government to acquire any follow-on acquisitions. Information should be submitted within 15 days of the publication date of this RFI. The Government does not intend to award a contract on the basis of this RFI or otherwise pay for the information solicited. No entitlement to payment of direct or indirect costs or charges by the Government will arise as a result of submission of responses to this RFI and Government use of such information. This RFI does not constitute the solicitation of proposals. Responders to this RFI may be requested to provide additional details/information based on their initial submittals. Questions and submissions may be submitted by email to richard.j.murphy3@navy.mil.
Technical Requirements
SCOPE
General.
This document specifies the minimum requirements for an I-level High Flow Gas Calibrator for procurement as tasked by PMA-260. The I-level High Flow Gas Calibrator will be a measurement-only type device. The gas flow being measured will be generated using an external air source that is independent from the I-level High Flow Gas Calibrator.
Usage.
The I-level High Flow Gas Calibrator will be used by Navy civilian and military personnel at shipboard and shore based activities to calibrate high flow (20 to 240 Standard Cubic Feet per Minute (SCFM), reference 70 °F and 14.7 psia) gas flow rates with gas flow temperatures as high as 120 °F on Navy aircraft support equipment. The primary test medium will be air. The system must provide direct reading type indications that do not require calculations or would be subject to interpretation. Use of the equipment must require very minimal training and knowledge of gas flow theory. The aircraft support equipment will generate the air flow being measured or it will be supplied by an external air source. The gas flow testing will be performed in diverse uncontrolled and controlled operational environments, primarily in on-site situations. The I-level High Flow Gas Calibrator must be easily transported from the calibration laboratory to the end use location.
Equipment REQUIREMENTS
Equipment.
The I-level High Flow Gas Calibrator shall consist of all equipment necessary to measure high flow gas rates. This will include the measurement element, internal controller, a user interface display, all necessary electrical connections, all necessary pneumatic hoses, all required temperature and pressure measurement transducers, flow conditioners, all required system fittings and connectors, and a transport/storage case or cases. The I-Level High Flow Gas Calibrator range at a minimum shall be 20 to 240 SCFM. The overall measurement uncertainty of the system, at a minimum, shall be ± 1 % of indicated value. The system manufacturer must provide initial National Institute of Standards and Technology (NIST) traceable calibration for the unit.
Measurement element.
The measurement element will be the main sensing portion of the I-level High Flow Gas Calibrator. It will be placed in series with the gas flow from the aircraft support equipment being tested. The air through the measurement element will typically be filtered/dry air (0.01 micron filtered coalescing, 3.0 micron vapor filter or better). The measurement element must not be adversely impacted under these conditions.
Internal controller.
The I-level High Flow Gas Calibrator shall have an internal controller that converts the measurement element raw measurements to the required direct reading gas flow rates without the need for calculations. The internal controller shall have a digital interface in the form of a USB connection conforming to the Universal Serial Bus Specification (USB) Revision 2.0 or higher, or equivalent RS232. The digital interface shall support control of the device without the need for any proprietary drivers or software that is not provided with the system and shall support calibration and alignment of the system.
User interface display.
At a minimum, the user interface display must display flow rates in selectable units of Standard Cubic Feet per Minute (SCFM), Actual Cubic Feet per Minute (ACFM), Standard Liters Per Minute (SLPM), Actual Liters Per Minute (ALPM), flow gas temperature (°F), differential pressure across the measurement element (inH20 @ 20 °C) (if required by the measurement method), and absolute gas pressure (psia). Use of the system must not require the end user to have an external computer.
Electrical connections and pneumatic hoses.
All necessary electrical connections and pneumatic hoses necessary to operate and use the I-level High Flow Gas Calibrator shall be provided with the system.
Flow conditioners.
Depending on the technology used by the I-level High Flow Gas Calibrator, all required flow conditioners (i.e. upstream and downstream flow conditioners if required) necessary for the system to produce accurate and stable measurements shall be provided with the system.
System fittings and connectors:
The I-level High Flow Gas Calibrator as a system shall include all fittings and connectors required to connect the system together for measurement. The I-level High Flow Gas Calibrator must interface with a Female 2 inch nominal cam-and-groove coupling, nominal inside diameter 2.5 inches (A-A-59326D) during use. The system manufacturer must provide this interface adapter as part of the system. The cam-and-groove fitting must not be permanently attached to the I-level High Flow Gas Calibrator.
Electrical power source.
The I-level High Flow Gas Calibrator shall operate on standard 115 VAC single-phase 50 Hz and 60 Hz source.
Equipment identification.
All equipment, at a minimum, shall be identified with manufacture, model number, nomenclature, and serial number. The method used to identify the equipment must not create potential foreign object damage in areas used for operation of aircraft.
Transport/storage case.
The I-level High Flow Gas Calibrator shall include a hard transport/storage case for the system. The transport/storage case will be used to transport the system to the use location, to ship the system for calibration and alignment, and will be used to store the system when not in use. More than one case may be used if necessary. The transport/storage case shall include provisions for storage of all major system components, and all accessories (cables, hoses, adapters, input power cable, etc.). All items will remain securely held in place during normal transit. The transit/storage case shall have a configuration that permits stacking without harm to the enclosure or its contents.
Identification plate.
An equipment identification plate shall be permanently affixed to the transport/storage case or cases. The identification plate shall at a minimum contain the following: manufacturer name, model number, nomenclature, and serial number.
Calibration and alignment.
The Navy has a requirement to establish organic Navy calibration support for the I-level High Flow Gas Calibrator. Provisions for calibration and alignment of the system by the Navy must be included in the design of the system. The system shall be provided with all necessary instructions, firmware, and hardware needed to calibrate and align the equipment so that the equipment meets its performance specifications after repair or due to the equipment failing calibration. This includes calibration of the measurement element, and calibration and alignment of the temperature transducer and pressure transducers. Any special calibration fixtures required shall be provided with the system. The manufacturer shall at a minimum provide 1 set of all required interface software and interface hardware necessary (excluding computer) to perform calibration and alignment of the system.
Calibration certificate.
The system provided under this specification shall have a current calibration certificate, with a calibration data sheet, traceable to NIST (ANSI Z-540, 17025: 2005 or equivalent recognized organization and standard).
Calibration interval.
The minimum acceptable interval between calibrations of the I-level High Flow Gas Calibrator shall be 12 months. At the end of this interval, a minimum of 85 percent of the units shall remain in tolerance. The manufacturer recommended calibration interval must be documented in the user manual or other support documentation.
Temperature operating.
The I-level High Flow Gas Calibrator shall conform to the specified performance and accuracy while being operated at temperatures over the range of 32 to 120 ºF.
Warm-up.
The I-level High Flow Gas Calibrator shall comply with the performance requirements after a maximum 30 minute warm-up period preceded by a maximum 10 minute non-operating temperature stabilization period in the use environment.
Portability.
Due to the end use on-site requirements, the I-level High Flow Gas Calibrator must be a portable system. The overall weight of the system as a whole, including the transport/storage case or cases, shall not exceed 88 lbs. The overall weight of any individual transport/storage case shall not exceed 44 lbs. The overall length of any individual transport/storage case shall not exceed 60 inches. The transport/storage case must include a minimum of one handle.
Performance Requirements
Performance requirements.
The I-level High Flow Gas Calibrator shall function as specified below.
Flow range.
The I-level High Flow Gas Calibrator shall be capable of measuring gas flow rates in the range of 20 to 240 SCFM.
Measurement uncertainty.
The I-level High Flow Gas Calibrator as a complete system, shall be capable of measuring, and displaying gas flow rates with a total uncertainty, (Coverage factor of 2 IAW NIST Technical Note 1297), not to exceed ± 1 % of indication.
Differential and absolute pressure sensors.
If the I-level High Flow Gas Calibrator uses a differential pressure sensor it shall at a minimum be capable of measuring a pressure of at least 20 inH2O without damage to the sensor. If the I-level High Flow Gas Calibrator uses an absolute pressure sensor it shall at a minimum be capable of measuring an absolute pressure of 38 psia without damage to the sensor.
Temperature Sensor.
The I-level High Flow Gas Calibrator temperature sensor shall at a minimum be capable of measuring an air flow temperature range of 32 to 120 °F ± 1 °F.
Richard J. Murphy, Contract Specialist, Phone 7323232749, Email richard.j.murphy3@navy.mil
