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56-101-01501_01502 Revision D  

 

 

 

 

 

 

 

 

 

 

                  Page | 3 

3.  INSTRUCTIONS FOR USE 

A.  With the Barfield DFQ40K Test Set connected via the appropriate Adapter Cable (not 

included) to the aircraft indicating system, the user is able to measure Insulation, 
Capacitance and simulate capacitance to test or calibrate the aircraft system using the 
prescribed values. 
 

B.  Please refer to 

CHAPTER 4: OPERATIONS

 for complete operating instructions. 

 

C.  Please refer to the 

APPENDIX A:

 

DISPLAY NAVIGATION GUIDE

. 

 

4.  TECHNICAL ASSISTANCE 

A.  For technical assistance on the Barfield DFQ40K please contact Barfield Inc. at:  

 

TECHNICAL CUSTOMER SUPPORT - GSTE 
BARFIELD, INC. 
P.O. BOX 025367 
MIAMI, FL  33102-5367 
USA 
 
Telephone  

 (305) 894-5400 

 

 

 

 

 (800) 321-1039 

 
Fax 

 

 

 (305) 894-5401 

 
Email   

 

 

[email protected]

 

 

 

 

Summary of Contents for DFQ40K

Page 1: ...1 Barfield Inc All Rights Reserved DFQ40K Fuel Quantity Test Set USER INSTRUCTION MANUAL P N 101 01501 101 01502 M N DFQ40K Doc P N 56 101 0501_01502 Revision D January 15 2021 _______________________...

Page 2: ...information contained herein is the sole property of Barfield Inc No intellectual property rights are granted by the delivery of this document or the disclosure of its content This entire document is...

Page 3: ...roceed beyond the WARNING notice until required conditions are understood and fully complied with CAUTION A CAUTION notice indicates a hazard with a potential for damage to the equipment and or loss o...

Page 4: ...56 101 01501_01502 Revision D Page iii MARKING AND SYMBOLS Warning Read and understand operator s manual before using this machine...

Page 5: ...ax 305 894 5401 Email gsesales barfieldinc com MAINTENANCE AND REPAIR INFORMATION The manufacturer of this equipment does not recommend the user to attempt any maintenance or repair In case of malfunc...

Page 6: ...ary 20 2010 Initial Release B 260 00780 May 25 2010 Some notes for Figure A1 Operation Displays Navigation Guide page 37 were reworded C 260 01054 November 7 2014 Updated Barfield logo D 260 01289 Jan...

Page 7: ...EST SET ix 3 RECERTIFICATION xi 4 TEST SET EQUIVALENT xi CHAPTER 1 GENERAL 1 1 INTENDED USE 1 2 SPECIFICATIONS 1 3 INSTRUCTIONS FOR USE 3 4 TECHNICAL ASSISTANCE 3 CHAPTER 2 RATINGS 4 1 SUPPLY VOLTAGES...

Page 8: ...ALIBRATION PREFERRED DRY TANK 20 11 SYSTEM CALIBRATION ALTERNATE WET TANK 23 12 BENCH TEST PROBE INSULATION 25 13 BENCH TEST PROBE CAPACITANCE 27 CHAPTER 5 RECEIVING SHIPPING AND STORAGE 29 1 RECEIVIN...

Page 9: ...VDC Power Cable 11 Figure 13 Correct Battery Orientation 12 Figure 14 Main Menu Screen 13 Figure 15 Aircraft Insulation Test Configuration 15 Figure 16 Aircraft Capacitance Test Configuration 17 Figu...

Page 10: ...using the procedures and instructions detailed in this manual Do not use this equipment for any other purpose than that stated 2 INFORMATION PROVIDED WITH THE TEST SET In addition to this User Instruc...

Page 11: ...y Registration card Figure 2 is to be completed by the owner and returned to Barfield Inc within ten 10 days of purchase to ensure automatic update of printed matter and validation of warranty To regi...

Page 12: ...o that the errors at all required test points are zeroed out Conducting a simple Bench Check Verification is quite different to the calibration process as no adjustments are made to the UUT so long as...

Page 13: ...56 101 01501_01502 Revision D Page xii Figure 3 Limited Warranty...

Page 14: ...es for both Tank units and Compensator probe 2 SPECIFICATIONS A Physical Characteristics Size H W L 6 0 in 15 2 cm 11 6 in 29 5 cm 13 4 in 34 0 cm Weight 10 0 lbs 4 5 kg Table 1 Physical Characteristi...

Page 15: ...5 40 000 1 1 5 Resistance Measure 4W 40 0 001 1 0 005 400 0 01 1 0 05 4 000 0 1 1 0 5 40 000 1 1 5 Voltage Measure 40 VDC 0 001 VDC 1 0 005 VDC Current Measure 1200 A 1 A 0 1 5 A Current Simulation 1...

Page 16: ...st or calibrate the aircraft system using the prescribed values B Please refer to CHAPTER 4 OPERATIONS for complete operating instructions C Please refer to the APPENDIX A DISPLAY NAVIGATION GUIDE 4 T...

Page 17: ...externally accessible battery holders mounted on the case rear and which require no tools to load see Figure 5 B Aircraft 28VDC is connected to P N 101 01502 via the electrical connection mounted on t...

Page 18: ...N 56 101 01501_1502 this doc 4 Six 6 each Alkaline C Cell LR14 Batteries 5 28VDC Power Cable P N 175 00252 P N 101 01502 only B Enclosure The test set is encased in a Copolymer injection molded case c...

Page 19: ...CTIONS A The DFQ40K is equipment intended for supply only from a low energy battery source There is no provision for powering the tester from AC voltage sources B The Barfield DFQ40K is powered from 6...

Page 20: ...56 101 01501_01502 Revision D Page 7 Figure 6 28VDC Connection 4 VENTILATION DRAINAGE A Ventilation No ventilation is necessary or provided B Drainage No drainage is necessary or provided...

Page 21: ...ing option displayed above them Figure 7 DFQ40K Front Panel and Function Switches 5 The RANGE pushbutton is active for Resistance Insulation Capacitance and Capacitance Simulator Measurements It is pr...

Page 22: ...he AirCraFT tank units side of the aircraft interface adapter cable 3 The IND HI Z COAX IND LO Z TANK and IND LO Z COMP receptacles are BNC connectors and are used to connect the DFQ40K to the leads p...

Page 23: ...the test set for the desired function 10 Instruction line provides prompts to the user giving alerts or brief instructions as applicable 2 POSITIONING A It is important whether testing on the aircraf...

Page 24: ...56 101 01501_01502 Revision D Page 11 Figure 10 Accessory Lead Package P N 101 01511 Figure 11 6 each Alkaline C Cell Batteries Figure 12 28 VDC Power Cable...

Page 25: ...MUST be replaced To remove old batteries and to install new ones 1 Before battery installation test each one individually to assure maximum battery life 2 Remove caps from the two battery holders in t...

Page 26: ...Resistance Measurement cable P N 101 01027 is available If required contact Barfield Customer Service Dept to order either one or both P Ns D An accessory power cable P N 175 00252 is provided with DF...

Page 27: ...G AND DEFUELING PROCEDURES OBSERVING PRECAUTIONS THEREIN 1 Defuel the Aircraft CAUTION FUEL QUANTITY REFUEL AND DEFUEL POWER MUST BE OFF WHILE ACCESSING AND BEFORE ANY HARNESS CABLE OR CONNECTOR IS RE...

Page 28: ...F3 F4 F5 F6 5 Press MODE to select 3T default or 2T as desired 6 Press RANGE to select AUTO ranging default or 40M 400M 4 000M or 20G range 7 Press F1 for L H default if not already highlighted L H L...

Page 29: ...8 AIRCRAFT CAPACITANCE TEST A Aircraft Preparation CAUTION TANK UNIT CAPACITANCE TESTS ARE NOT TO BE CARRIED OUT UNTIL FUEL TANKS HAVE BEEN EMPTIED AND PURGED REFER TO SPECIFIC AIRCRAFT MAINTENANCE MA...

Page 30: ...to complete 3 Press ENT to accept last used Frequency or key in new frequency then press ENT 4 Press F4 to select CAPacitance Measure AUTO MON INS CAP SIM CAL F1 F2 F3 F4 F5 F6 5 Press RANGE to selec...

Page 31: ...RFORMED HERE MUST THEN BE FOLLOWED BY AN ACTUAL CALIBRATION A Aircraft Preparation 1 The Aircraft does not need to be defueled for this test The level of fuel is irrelevant CAUTION FUEL QUANTITY REFUE...

Page 32: ...ator is needed 6 Press F1 to select TANK simulator default if not highlighted TANK COMP CAL F1 F2 F3 F4 F5 F6 7 Press RANGE to select 4 000 pF or 10 000 pF as desired 8 Using the keypad enter the Empt...

Page 33: ...y and Full adjustments until no further improvements can be made 25 Once the Empty and Full adjustments are finalized an indicator linearity test may be accomplished Refer to the appropriate Maintenan...

Page 34: ...st Set 1 Position the equipment conveniently for the following procedures 2 Connect to the Test Set the Adapter Cable specific for the Aircraft being tested as shown in Figure 18 or as directed in the...

Page 35: ...2 to select ACFT SIM ACFT A S F1 F2 F3 F4 F5 F6 14 Close appropriate Fuel Quantity System circuit breaker s 15 Adjust the Empty adjustment screw for a ZERO or EMPTY indicator reading 16 Press F3 to se...

Page 36: ...Open appropriate Fuel Quantity System circuit breaker s CAUTION REFER TO AIRCRAFT MAINTENANCE MANUAL FOR ACCESSING PROCEDURES FOLLOW ALL PRECAUTIONS THEREIN 3 Gain access to the cockpit indicator or...

Page 37: ...e Example for 123 4 pF press 1 then 2 then 3 then then 4 then ENT 9 Press F2 to select COMPensator TANK COMP CAL F1 F2 F3 F4 F5 F6 10 Using the keypad enter the Empty COMP capacitance 11 Press BACK to...

Page 38: ...stem circuit breaker s 27 Press PWR to turn test set OFF 28 Disconnect the Adapter Cable from the Test Set 29 Disconnect the Adapter Cable from the Aircraft and from the Indicator 30 Return the Aircra...

Page 39: ...L S L G H G H S S G F1 F2 F3 F4 F5 F6 10 The test is considered satisfactory if the minimum specified is reached 11 Repeat the test by pressing F3 through F6 for remaining points of testing 12 Press N...

Page 40: ...turn test set ON 2 Allow initialization to complete 3 Press ENT to accept last used frequency or key in new frequency then press ENT 4 Press F4 to select CAPacitance Measure AUTO MON INS CAP SIM CAL F...

Page 41: ...or Self Test at any time to ensure proper operation TANK COMP DTF ZERO ST F1 F2 F3 F4 F5 F6 11 This completes the BENCH CAPACITANCE TEST 12 Press PWR to turn test set OFF 13 Disconnect the leads from...

Page 42: ...urer 2 SHIPPING A It is recommended that the factory shipping container and packing materials be retained should it become necessary for any reason to re ship the Test Set such as for the O E M recert...

Page 43: ...ng use then first verify configuration of the test set switching and the hook up arrangements to the system or device under test B If the test set configuration and the hook up arrangements are found...

Page 44: ...56 101 01501_01502 Revision D Page 31 APPENDIX A DISPLAY NAVIGATION GUIDE...

Page 45: ...cable stray capacitance F6 Starts Capacitance Self Test RANGE Toggles 400 4000 40000 AUTO pF F5 Zeroes adapter cable stray capacitance F6 Starts Capacitance Self Test RANGE Toggles 400 4000 40000 AUTO...

Page 46: ...56 101 01501_01502 Revision D Page 33 Figure A2 Settings Navigation Guide PRESSING NEXT PRESSING BACK...

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