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USER INSTRUCTION MANUAL

M/N: 2548H, P/N: 101-00420

Doc.

P/N:

56-101-00420

Revision

November 7, 2014

____________________________________

BARFIELD, INC.

Corporate

Headquarters

4101 Northwest 29th

Street

Miami, Florida 33142

www.barfieldinc.com

Email: [email protected]

2548H

FUEL QUANTITY TEST SET

Содержание 2548H

Страница 1: ...ision C November 7 2014 ____________________________________ BARFIELD INC Corporate Headquarters 4101 Northwest 29th Street Miami Florida 33142 www barfieldinc com Email gsesales barfieldinc com Copyr...

Страница 2: ...ion or error found in this manual Inquiries should include specific questions and reference the publication title number chapter page figure paragraph and effective date Please send comments to TECHNI...

Страница 3: ...te and return the enclosed OWNER WARRANTY REGISTRATION CARD to Barfield in order to validate the warranty and to ensure that you will receive updated information when published You MUST have your name...

Страница 4: ...HANGE A B C N A 260 00729 260 01053 March 1 2003 February 3 2009 November 7 2014 Initial Release This manual supercedes 2548H 8005 Instruction manual and or previously released Instruction manuals for...

Страница 5: ...epair facilities worldwide ensuring that this equipment will be serviced using proper procedures and certified instruments A Return Maintenance Authorization RMA number will be assigned during this ca...

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Страница 7: ...1 GENERAL INFORMATION 1 PURPOSE 5 2 2548H FRONT PANEL COMPONENTS 6 CHAPTER 2 SPECIFICATIONS AND CAPABILITIES 1 CAPABILITIES 9 2 SPECIFICATIONS 9 3 PHYSICAL DATA 10 CHAPTER 3 OPERATION 1 GENERAL INFOR...

Страница 8: ...Insulation Test Configuration 3 18 Figure 9 Insulation Test Configuration 4 18 Figure 10 Configuration of Capacitance Test 19 Figure 11 Individual Tank Unit Capacitance Test Configuration 1 21 Figure...

Страница 9: ...roper procedures operating techniques precautions and limitations 2 INFORMATION PROVIDED WITH THE UNIT Besides this User Instruction Manual the 2548H Test Set is provided with the four items described...

Страница 10: ...he manufacturer s obligation to the original purchaser D Each new or re certified unit is delivered with a Certificate that shows the date when the unit was tested by the manufacturer its serial numbe...

Страница 11: ...2548H INSTRUCTION MANUAL 56 101 00420 Rev C Intro Nov 07 14 Page 3 of 33 Figure 3 LIMITED WARRANTY STATEMENT...

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Страница 13: ...tance simulator functions are provided through the function selector switch The standard lead package enclosed with the 2548H Test Set provides all accessories necessary except adapter cables to adapt...

Страница 14: ...FF position 2 2548H FRONT PANEL COMPONENTS Note Refer to Figure 5 for item number identification Figure 5 2548H PANEL COMPONENTS 1 The PRESS TO MEASURE is a pushbutton which when pressed activates the...

Страница 15: ...BATTERY COMPARTMENT contains the batteries or the optional AC power supply The four 4 9V batteries are connected to provide a bipolar 18 VDC supply that is controlled through the ON OFF switch The opt...

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Страница 17: ...ge amplifiers Simulate capacitances representative of empty or full probes or systems or the added capacitance effect of the fuel between empty and full Substitute the test set meter for DC meter move...

Страница 18: ...ridge COMP Range 10 400 pF continuously adjustable Accuracy Set with Capacitance Bridge Maximum Input 75 V RMS 220 V peak to peak above 3 kHz Tank Simulator limit decreases proportionately to 10 V RMS...

Страница 19: ...e insulating air or fuel or air fuel mixture in the tank then fed to other units for refinement or amplification before being displayed on the indicator Note For more complete and detailed information...

Страница 20: ...ng the integrity of the system s empty level 2 Method 2 Alternate The Wet Tank method of calibration is done with fuel in the tanks The Tank Unit is electrically removed from the Fuel Quantity Indicat...

Страница 21: ...the two 2 screws B Battery Test Procedure 1 Set the Test Set s ON OFF switch to ON 2 Rotate the Test Set s TEST FUNCTION selector switch to CAP BRIDGE 3 Press the BATT TEST pushbutton Ensure the meter...

Страница 22: ...Release the BATT TEST pushbutton 3 PRECAUTIONS A Refer to the appropriate maintenance or systems manual for operating instructions on specific aircraft systems and components and for proper defueling...

Страница 23: ...Turn the Test Set s METER ADJUST to set the meter pointer to full scale 4 For insulation readings below 20 M set the RANGE switch to x 01 5 For insulation reading above 20 M set the RANGE switch to x1...

Страница 24: ...2548H INSTRUCTION MANUAL 56 101 00420 Rev C Ch 3 Nov 07 14 Page 16 of 33 Figure 6 INSULATION TEST CONFIGURATION 1 Figure 7 INSULATION TEST CONFIGURATION 2...

Страница 25: ...aircraft ground for the applicable aircraft Note The meter pointer may drift slowly after initial movement due to capacitance charging time or the presence of moisture Allow the pointer to stabilize...

Страница 26: ...N 3 Note Adapter harnesses are available from this manufacturer for connecting to certain aircraft equipped with probe system bulkhead connectors The harness has a switch for selecting each of the ind...

Страница 27: ...the procedure to read resistance 7 Turn T S set OFF Note Section 4 SYSTEM INSULATION TEST should be performed after an individual insulation test and or repair is done and before performing section 6...

Страница 28: ...eter increases reduce the setting by one digit Repeat procedure for each thumbwheel moving to the right until the best null is achieved If the last or more digits indicate zero 0 reduce the previous d...

Страница 29: ...s shown in Figure 11 or may be measured through bulkhead connectors using an adapter cable as shown in Figure 12 Note The ground or shield connection of the Tank Unit Under Test may be connected to th...

Страница 30: ...y repairs and repeat the test procedure 4 Release the PRESS TO MEASURE pushbutton 5 If there are additional tank unit electrical connectors or bulkhead connectors in the system configuration repeat th...

Страница 31: ...of which is wired without tank unit circuits to the amplifier as shown in Figure 13 Figure 13 CAPACITANCE SIMULATION CONFIGURATION 1 With split leads from each end of the cable that is fitted with co...

Страница 32: ...MP SIM can also be used to simulate a Tank Unit circuit If the COMP SIM is not used install the shorting cap on the Test Set s COMP RECEPTACLE 3 Set TANK CAP pF by entering the EMPTY COMPENSATOR VALUE...

Страница 33: ...COMP CAL pushbutton Adjust the COMP CAL 0 10 for the lowest possible reading 5 Release the COMP CAL pushbutton 6 Rotate the TEST FUNCTION selector to CAP SIM 1 7 Adjust the amplifier F FULL adjustmen...

Страница 34: ...t adapter cables or other test equipment connected to the system 1 Setting EMPTY Adjustment Without adapter cables a Close the appropriate circuit breakers b If applicable to the system select the app...

Страница 35: ...one branch to the connector attached to the amplifier Figure 16 SYSTEM CALIBRATION METHOD 1 CONFIGURATION 1 MULTIPLE AIRCRAFT CONNECTORS Figure 17 shows an adapter cable with split leads from each end...

Страница 36: ...ULATOR COMP SIM is generally used to simulate a reference compensator capacitance However the COMP SIM can also be used to simulate a Tank Unit circuit If the COMP SIM is not used install the shorting...

Страница 37: ...CAL 0 10 and D F controls for the lowest possible reading f Release the COMP CAL pushbutton g Rotate the TEST FUNCTION switch to CAP SIM 1 Note The CAP SIM 2 selection is used with ratiometric systems...

Страница 38: ...Set TANK CAP pF by entering the EMPTY COMPENSATOR VALUE to be simulated on the thumbwheel assembly Note If the actual dry capacitance value for the particular aircraft serial number is known substitut...

Страница 39: ...the COMP CAL pushbutton while alternating adjusting the COMP CAL 0 10 and D F controls for the lowest possible reading f Release the COMP CAL pushbutton g Rotate the TEST FUNCTION selector to CAP SIM...

Страница 40: ...electronic equipment packaging procedures when packing the adapter for reshipment CAUTION Do not pack any loose cables or other accessories inside the carrying case B All accessories should be stored...

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