AIR FORCE A-A-59579 B-2012 TEST SET FUEL CONTROL SYSTEM - AC DC QUANTITY.pdf

1、 AMSC N/A FSC 4920 DISTRIBUTION STATEMENT A. Approved for public release: distribution is unlimited. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data that may improve this document should be sent to WR-ALC/403 SCMS/GUEEA, 460 Richard Ray Bvld, Robin

2、s AFB, GA 31098-1813. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil . A-A-59579B 15 May 2012 SUPERSEDING A-A-59579A 10 May 2010 COMMERCIAL ITEM DESCRIPTION TEST SET, FUEL CONTROL SY

3、STEM - AC/DC QUANTITY The General Services Administration has authorized the use of this commercial item description (CID), for all federal agencies. 1. Scope.This Commercial Item Description ( CID ) describes an AC/DC Fuel Quantity Test Set (ADFQTS) based on Bridge Capacitance/Resistance Test Set (

4、BC/RFGTS) technology. This CID describes the minimum requirements for the ADFQTS for which only those manufacturers that meet or exceed the requirements herein are qualified per this CID. The ADFQTS will be capable of 1) measuring fuel tank resistance, capacitance and voltage, 2) simulating tank uni

5、t capacitance, 3) simulating the compensator capacitance for testing with dry fuel tanks, and 4) being utilized as a standard to calibrate the fuel measurement systems and compensator capacitance. 2. SALIENT CHARACTERISTICS. 2.1 General.The equipment shall be capable of operation and be bid sample t

6、ested within the accuracies, limits, and specifications herein. Equipment covered by this CID shall be commercially available equipment and may be modified to the extent necessary to meet the following description. The equipment shall be Class 1, in accordance with MIL-PRF-28800. 2.2. Order of Prece

7、dence.In the event of a conflict between the text of this CID and the references cited herein (except for associated detail specifications, specification sheets or MS standards) the text of this CID shall take precedence. Nothing in this CID, however, shall supersede applicable laws and regulations

8、unless a specific exemption has been obtained. 2.3 Safety. The equipment shall be UL (Underwriters Laboratories) listed and approved and/or shall comply with the safety requirements of Class 1, in accordance with MIL-PRF-28800. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking pe

9、rmitted without license from IHS-,-,-A-A-59579B 2 2.31 Intrinsic Safety. Current shall be limited to 10 milliamperes (mA) in all modes. Capacitive discharge energy shall be limited to 0.02 milli-joules at 0.016 uF for all modes of operation as stated in Boeing Specification 10-61959 for intrinsic sa

10、fety. The test set shall be tested in accordance with explosive atmosphere requirements MIL-STD-810, METHOD 511.4. 2.3.2 Leakage Current Protection.2.4 Protection shall be provided from leakage current in excess of 3.5 mA rms (AC and DC) from any accessible conductive parts of equipment (such as con

11、trol shafts with knobs broken or removed and recessed calibration or adjustment controls) to either pole of the power source for any position of the power switch. Power Consumption. 2.5 Aggregate power consumption of all components shall not exceed 200 VA. Electrical Power Sources.2.5.1 The ADFQTS,

12、when re-charging from external power sources, shall re-charge from nominal commercial, military, and shipboard power sources over the following ranges. Single-Phase, 120 Vrms.2.5.2 The ADFQTS shall re-charge using 120 Vrms, single-phase at frequencies of 50 Hz, 60 Hz, and 400 Hz in accordance with t

13、he MIL-PRF-28800 Steady-State Conditions, Transient-State Conditions, and Interruption of Power Source requirements. Single-Phase, 240 Vrms.2.6 The ADFQTS shall re-charge using 240 Vrms, single-phase at frequencies of 50 Hz and 60 Hz in accordance with the MIL-PRF-28800 Steady-State Conditions, Tran

14、sient-State Conditions, and Interruption of Power Source requirements. DC Internal Power Source.2.7 The ADFQTS shall operate from a DC internal power source in accordance with MIL-PRF-28800. The DC internal power source shall be replaceable with widely available or preferred stock listed (NSN 6140-0

15、1-213-0199) battery. Operating Temperature.2.8 The ADFQTS shall meet its performance and accuracy requirements in an operating environment of -20C to +55C. Nonoperating Temperature.2.9 General Specifications. The ADFQTS shall provide a means to determine the serviceability of Air Force aircraft empl

16、oying a variety of AC capacitance fuel gauging systems. It shall consist of a single integral unit incorporating a transportable case, direct current (DC) electrical resistance measuring circuitry, capacitance and DC voltage measuring circuitry, capacitance substitution circuitry (simulates tank uni

17、t and compensator capacitance), switches, wiring, cable assemblies, and accessories. The ADFQTS shall operate from an external AC power source and DC internal power source and shall be capable of operating while the internal power source is being charged. The structure and feature relating to calibr

18、ation shall provide for lowest cost, simplicity, accuracy and reasonable convenience in use. The ADFQTS shall meet its performance and accuracy requirements in a non-operating environment of -51C to +71C. 2.9.1 ADFQTS Functions. The ADFQTS shall contain four basic types of circuitry. Each type shall

19、 perform a separate function as described. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59579B 3 2.9.1.1 Capacitance Measurement.2.9.1.1.1 The ADFQTS shall have AC and DC capacitance measurement capability to determine the serviceability of Ai

20、r Force aircraft capacitance type fuel quantity gauging systems. The ADFQTS shall automatically display the measured capacitance, i.e., no necessary manual computation of the tank unit and the compensator. The capacitance measurement system shall have a minimum range of 0.01 pF to 39,990 pF. AC capa

21、citance readings shall have an accuracy of the greater of 0.1% of the reading or 0.05 pF. DC capacitance readings shall have an accuracy of the greater of 0.2% of the reading or 0.05 pF. The resolution shall be at least 0.005% of the range selected. Rectified wave (DC) Capacitance Measurement.2.9.1.

22、2 The ADFQTS shall have an additional capability for capacitance measurement of peculiar aircraft fuel measurement systems where in-line diodes are used in the tank units. The ADFQTS shall automatically display the measured capacitance, i.e., no necessary manual computation of the tank unit and the

23、compensator. Simulated Tank Unit Capacitance.2.9.1.3 The ADFQTS shall be able to simulate tank unit capacitance in the range from 0 to 9,990 pF or greater. The capacitance simulation shall have an accuracy of at least 0.2% or 0.2 pF whichever is larger. Simulated Compensator Capacitance. 2.9.1.4 The

24、 ADFQTS shall be able to simulate Compensator capacitance in the range from 0 to 990 pF or greater. The capacitance simulation shall have an accuracy of at least 0.2% or 0.2 pF whichever is larger. Simulated Auxiliary (Aux) Capacitance. 2.9.1.5 The ADFQTS shall be able to simulate Aux capacitance ac

25、ross the minimum range of 0 to 990 pF (+ Tank Unit capacitance). The capacitance simulation shall have an accuracy of at least 0.2% or 0.2 pF whichever is larger. Insulation and Tank Resistance Measurement. 2.9.2 The resistance measurement capability shall have a minimum range of 0.1 to 20,000 M. Th

26、e accuracy shall be at least 2% of reading or 0.1 ohm whichever is larger. The accuracy above 2,000 M shall be no more than 5% of reading. The AC voltage applied across the circuit shall not exceed 50 volts and the short circuit current, when the output receptacles are shorted together, shall not ex

27、ceed 10 ma. Performance Characteristics.2.9.3 Test Measurement Sample Rate. The ADFQTS design shall minimize Re-Test OK (RTOK) of the Unit Under Test (UUT) while measuring fuel tank resistance and capacitance. The ADFQTS data acquisition measurement sample rate shall not be continuous but at interva

28、ls so as to minimize RTOK and Can Not Duplicate (CND) type of diagnostic errors. The sample rate shall be at a minimum of five (5) but no more than 10 (maximum) per second. Unless otherwise specified, when all vernier controls are in the calibrated position, all performance requirements shall apply

29、with or without test leads, after a 5-minute warm-up period. 2.10 Calibration.2.11 The ADFQTS shall have a calibration interval of at least 180 days and meet the requirements for calibration in MIL-PRF-28800. Use of an external power source shall not void or require calibration of the ADFQTS. Power

30、Requirements. The ADFQTS shall meet all voltage and frequency requirements as set forth in MIL-PRF-28800 and herein. A DC internal power source shall provide operating Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59579B 4 power when power is n

31、ot available (i.e., flight line use). The ADFQTS is required to operate from an internal DC power sources. The Rechargeable DC internal power source shall be ruggedized (remain operational after exposure to high altitudes of up to 60,000 ft) and able to supply power for a minimum of 8 hours of conti

32、nuous ADFQTS operation. 2.12 Cables and Connector Types.2.12.1 Universal cabling and adapters shall be used wherever practical. Relocation of cables shall not be required when changing modes of operation (i.e., from capacitance to resistance). Grounding.2.12.2 A means for grounding the ADFQTS to the

33、 aircraft and measuring external resistance shall be provided. Aircraft Tank.2.12.2.1 BNC Connector.2.12.2.2 All Aircraft tank units and indicator cable connectors shall be BNC type. The connectors shall be even in height approximately inch from surface. All cables currently in inventory for use wit

34、h the PSD90-1M, GTF-6 and PSD60-1AF shall be completely compatible with ADFQTS mating connectors. Cables currently in inventory include but are not limited to: PSDAF-C5A/B, 50079-0000-01, 55-0605-08, 55-0605-09, 55-0605-10, 55-0605-11, 55-0605-12; PSDAF-C130A, PSDAF-C130D, PSDAF-C130I, PSDAF-C130T,

35、3403116-15, PSDAF-102, PSDAF-103, PSDAF-101, 361-015-001, 50112-0000-01; 55-1000-16. Canon Plug Connector.2.12.3 There shall also be a single connector, Canon Plug type, to interface with existing adapter cable P/N 16U46505-3. Cable.2.12.4 A power cable shall be provided for charging of the battery

36、and/or bench top use if external power is utilized. Provided Cables.2.13 If required for adapting to existing aircraft specific interface, the manufacturer shall supply test cables or adapters with new units that are delivered to the Air Force. The cables shall be two matched pairs; one pair with ty

37、pe BNC(m-type) connectors and the other pair with type BNC(f-type). The test cables shall be 10 feet (nominal) in length. These cables shall be optional for services other than the Air Force. Indicators.2.14 All measurements shall be displayed on a 4.5-digit (minimum) lighted indicator with floating

38、 decimal point. The indicator shall be visible in bright sunlight and meet all requirements of Class 2 of the MIL-PRF-28800. Display Update Rate.3. REGULATORY REQUIREMENTS. Digital displays shall have a minimum update rate of 2 per second. Analog displays, if applicable, shall have an update rate of

39、 at least 20 times per second. 3.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and pr

40、omotes economically advantageous life cycle costs. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Provided by IHSNot for ResaleNo reproduction or networking permitted

41、without license from IHS-,-,-A-A-59579B 5 3.2 Green Procurement Program.4.0 PRODUCT CONFORMANCE PROVISIONS Green Procurement Program (GPP) is a mandatory federal acquisition program that focuses on the purchase and use of environmentally preferable products and services. GPP requirements apply to al

42、l acquisitions using appropriated funds, including services and new requirements. FAR 23.404(b) applies and states the GPP requires 100% of EPA designated product purchase that are included in the Comprehensive Procurement Guidelines list that contains recovered materials, unless the item cannot be

43、acquired: a) competitively within a reasonable timeframe; b) meet appropriate performance standards, or c) at a reasonable price. The prime contractor is responsible for ensuring that all subcontractors comply with this requirement. 4.1 Product conformance.4.2 The products provided shall meet the sa

44、lient characteristics of the CID, conform to the producers own drawings, specifications, standards, and quality assurance practices and be the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance prior to first delivery and th

45、ereafter as may be appropriate. Proof of conformance may include, but shall not be limited to the performance of operational tests, lab tests, modeling and simulation and delivery of reports and data from these tests. Reliability.4.3 The ADFQTS shall be subjected to such tests as appropriate to elim

46、inate early failures. The description of such tests shall be provided. The manufacturer shall provide information on methods, procedures, practices, and projected failure rates utilized to determine reliability. Mean-time-between-failures (MTBF) and mean-time-to-repair (MTTR) shall also be provided.

47、 The preferred method of MTBF and MTTR calculations are from actual data collection, calculated values may be provided if actual data is not available. Mean Time Between Failures (MTBF).4.4 The ADFQTS Mean Time Between Failures (MTBF) goal shall be 2,000 hours. The lower test MTBF shall be 2,000 hou

48、rs and the upper test MTBF shall be 4,000 hours. Pre-conditioning Requirement.4.5 Each deliverable ADFQTS shall be capable of being subjected to the environmental screening effects of burn-in and thermal cycling, with thermal cycling being accomplished in the sample-testing phase. Calibration.4.5.1

49、Calibration Procedure. The design of the system shall provide for readily accessible calibration adjustments and maintenance adjustments. These adjustments shall be provided by variable value components that are adjustable by the use of simple means. The calibration by substitution of selected components or parts is unacceptable unless specifically approved. The calibration adjustments, wherever possible, shall be accessible without remo