Agilent Technologies 16452A Operation And Service Manual Download Page 41 | Manualshive

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4

Service

Introduction

This

chapter

covers

assembly

replacement

and

troubleshooting

information.

W

arning

These

servicing

instructions

are

for

use

by

qualied

personnel

only

.

Do

NOT

perform

any

servicing

(other

than

that

contained

in

the

operating

section)

unless

you

are

qualied

to

do

so

.

Assembly

Replacement

T

able

4-1 ,

T

able

4-2 ,

and

T

able

4-3

list

the

replaceable

parts

for

the

16452A .

The

parts

listed

can

be

ordered

from

your

nearest

Agilent

T

echnologies

Oce

.

Ordering

information

must

include

the

Agilent

part

number

and

the

quantity

required.

Service

4-1

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Summary of Contents for 16452A

Page 1: ...Agilent 16452A Liquid Test Fixture Operation and Service Manual Agilent Part No 16452 90000 Printed in JAPAN January 2000 Third Edition ...

Page 2: ...y copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of the Agilent Technologies Agilent Technologies Japan Ltd Component Test PGU Kobe 1 3 2 Murotani Nishi ku Kobe shi Hyogo 651 2241 Japan c Copyright 1994 1996 2000 Agilent Technologies Japan Ltd ...

Page 3: ...is printed Minor corrections and updates that are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated January 1994 First Edition part number 16452 90000 June 1996 Second Edition part number 16452 90000 January 2000 Third Edition part number 16452 90000 iii ...

Page 4: ...tages may exist even with the power cable removed To avoid injuries always disconnect power and discharge circuits before touching them DO NOT Service Or Adjust Alone Do not attempt internal service or adjustment unless another person capable of rendering rst aid and resuscitation is present DO NOT Substitute Parts Or Modify Instrument Because of the danger of introducing additional hazards do not...

Page 5: ...tion s calibration facility or to the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of three months from the date of shipment except that in the case of certain components listed in Instrument Speci cations of this manual the warranty shall be f...

Page 6: ...ims the implied warranties of merchantability and tness for a particular purpose Exclusive Remedies The remedies provided herein are buyer s sole and exclusive remedies Agilent Technologies shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements and other customer assi...

Page 7: ... of fault A terminal marked with this symbol must be connected to ground in the manner described in the installation Operation manual and before operating the equipment Frame or chassis terminal A connection to the frame chassis of the equipment which normally includes all exposed metal structures Alternating current power line Direct current power line Alternating or direct current power line War...

Page 8: ...ed in place of the words in italics For example copy lename means to type the word copy to type a space and then to type the name of a le such as file1 Computer Computer font is used for on screen prompts and messages 4HARDKEYS5 Labeled keys on the instrument front panel are enclosed in 4 5 NNNNNNNNNNNNNNNNNNNNNNNNNN SOFTKEYS Softkeys located to the right of the CRT are enclosed in NNNNN viii ...

Page 9: ... Cleaning and Drying the Electrodes 3 3 Assembling the Test Fixture 3 4 Putting the Lid On the Liquid Outlet 3 4 Connecting the Test Fixture 3 5 Using the 4194A 3 5 Using the 4284A 4285A 3 6 Fixture Stand Usage 3 7 Checking the SHORT Residual 3 8 Using the 4194A 3 8 Using the 4284A 4285A 3 8 If the SHORT Residual is Out of Range 3 9 Setting the Instrument for Capacitance Measurement 3 9 Using the ...

Page 10: ...mbly Replacement 4 1 Electrode Assembly 4 4 Assembling Procedure for Electrode 4 5 Troubleshooting 4 6 A Liquids that Corrode the Test Fixture Nickel Corrosive Liquid A 1 Ceramic alumina Al2O3 Corrosive Liquid A 2 Viton Fluoro rubber Corrosive Liquid A 2 Silver copper and gold copper A 2 Contents 2 ...

Page 11: ...necting the Test Fixture 4284A 4285A 3 6 3 8 Fixture Stand Usage 3 7 3 9 Separating the Test Fixture into High and Low Electrodes 3 11 3 10 Test Fixture Assemble for Measurement 3 11 3 11 Poring the Liquid under Test 3 12 3 12 Taking the Lid O 3 14 3 13 Stray Capacitance 3 16 3 14 Correction Coe cient 3 16 3 15 Soaking the 16452A in the Oil Tank 3 17 4 1 16452A Replaceable Parts Major Parts 4 2 4 ...

Page 12: ......

Page 13: ...r the 16452A see Chapter 4 Product Description The 16452A Liquid Test Fixture provides accurate dielectric constant and impedance measurements of liquid materials This xture allows you to make frequency swept measurements or temperature coe cient measurements that precisely characterize liquid materials Applicable Instrument The 16452A has been designed to operate speci cally with the following LC...

Page 14: ... range of 020 to 125 C 16452 61601 Test leads 3 These cables are not furnished with the 16452A Order according to your measurement requirements Speci cations This section lists the complete 16452A speci cations These speci cations are the performance standards and limits against which the 16452A is tested When shipped from the factory the 16452A meets the following speci cations Electrode Size S 3...

Page 15: ...odes spacers liquid inlet and outlet Nickel plated cobal Fe 54 Co 17 Ni 29 Insulator Ceramic alumina Al203 O ring Viton Fluoro rubber Insulator soldering Silver copper and gold copper The typical corrosive characteristics of these materials are shown in Appendix A Operating Temperature 020 to 125 C The measurement cable s operating temperature is 16048A 0 to 55 C 16452 61601 020 to 125 C Non Opera...

Page 16: ...atability 0 3 mm62 m 0 5 mm62 m 1 0 mm62 m 2 0 mm62 m Necessary liquid volume 3 4 cc 3 8 cc 4 8 cc 6 8 cc Air capacitance value 34 9 pF 625 21 2 pF 615 10 9 pF 610 5 5 pF 610 Short residual when using the furnished shorting plate with a 1 3 mm spacer Ls equivalent series inductance 20 nH Rs equivalent series resistance 0 5 Temperature expansion coe cient 6300ppm C Additional impedance measurement ...

Page 17: ...Figure 1 2 Fixture Error A Figure 1 3 Fixture Error B Figure 1 4 Fixture Error A B General Information 1 5 ...

Page 18: ......

Page 19: ...ure set for signs of physical damage and missing contents If any discrepancy is found notify the carrier and Agilent Technologies Your Agilent Technologies sales o ce will arrange for repair or replacement without waiting for the claim to be settled Inspect the shipping container for damage Keep the shipping materials until the inspection is completed Verify that the shipping container contains ev...

Page 20: ...Product Overview Figure 2 1 16452A Product Overview 2 2 Initial Inspection ...

Page 21: ... 4 Carrying Case 16452 601014 1 Operation and Service Manual4 16452 90000 1 Fixture stand5 Stand body 6 1 Screw for stand 0515 0914 4 Stand foot 16452 00611 1 1 The O rings are assembled in the 16452A 2 The 1 3 mm spacer is assembled in the 16452A 3 The cap is on the SMA BNC adapter 4 The carrying case and the Operation and Service Manual are not shown in the Figure 2 1 5 The xture stand is shown ...

Page 22: ...ng materials If this material is not available comparable packaging materials may be used Wrap the liquid test xture in heavy paper and pack in anti static plastic packing material Use su cient shock absorbing material on all sides of the 16452A to provide a thick rm cushion and to prevent movement Seal the shipping container securely and mark it FRAGILE 2 4 Initial Inspection ...

Page 23: ...easurement 7 Do the liquid capacitance and resistance Cp Rp measurement 8 Drain the liquid after measurement 9 Do the data processing Calculate dielectric parameter from measurement data Measurement Requirements To do the measurement the following items are required 16452A liquid test xture Fixture stand furnished with the 16452A SMA BNC adapter furnished with the 16452A Measurement cable 16048A o...

Page 24: ...e separated into High and Low electrodes to make it possible to set the spacer and the shorting plate The test xture s electrodes are easier to clean if you separate the electrodes Connecting the SMA BNC Adapters to the 16452A Connect the SMA BNC Adapters to the 16452A SMA terminals as shown in Figure 3 1 The waterproof caps for the BNC connector should be on when washing the electrodes Figure 3 1...

Page 25: ...h and Low Electrodes Cleaning and Drying the Electrodes For the measurement the 16452A electrodes must be clean If the 16452A s electrodes are smeared wash and dry them thoroughly before assembling Caution Do not use a detergent that corrodes the test xture For a list of the materials that are corrosive to the test xtures see Appendix A Operation 3 3 ...

Page 26: ...d the shorting plate as required Then assemble the 16452A as shown in Figure 3 3 Figure 3 3 Assembling the Test Fixture for a SHORT Compensation Putting the Lid On the Liquid Outlet Put the lid on the liquid outlet as shown in Figure 3 4 Figure 3 4 Putting the Lid On 3 4 Operation ...

Page 27: ...t the cable that matches your measurement Using the 4194A 1 Set the cable length When using the 16048A or 16452 61601 cable set the cable length to 1 m as follows Turn the 4194A OFF Then set the Cable Length switch to 1 m Figure 3 5 After setting the switch turn the 4194A ON Figure 3 5 Cable length switch 4194A 2 Take the BNC adapter caps o and connect the test xture to the unknown terminal using ...

Page 28: ...N 1m When you use the test leads for the rst time you must perform the cable correction For information on how to perform the correction see the 4284A 4285A Operation Manual 2 Take the BNC adapter caps o and connect the test xture to the unknown terminal using the cables Lp LPOT Lc CCUR Hp HPOT Hc HCUR Figure 3 7 Connecting the Test Fixture 4284A 4285A 3 The 16452 61601 cable can be used in the sa...

Page 29: ...Fixture Stand Usage The xture stand sets the test xture stable and upright as required during the measurement Figure 3 8 Fixture Stand Usage Operation 3 7 ...

Page 30: ...ual is the required value a Press 4DISPLAY5 NNNNNNNNNNNNNN menu NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN AUTO SCALE A b Press NNNNNNNNNNNNNNNNNNNNNNNNNN more 1 3 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN AUTO SCALE B c Press 4REPEAT5 until the light is ON d Check that the Ls and Rs value at 1 MHz is in the following range Ls 20 nH Rs 0 5 Using the 4284A 4285A 1 Set the compensation function OFF a Press...

Page 31: ...ses a capacitance measurement method This is done by measuring Cp parallel equivalent capacitance and Rp parallel equivalent resistance and then calculating the dielectric constant and the dielectric loss tan Using the 4194A 1 Select the measurement parameter Cp Rp a Press 4FUNCTION5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNN IMPEDANCE NNNNNNNNNNNNNNNNNNNNNNNNNN more 1 3 NNNNNNNNNNNNNNNNNNNNNNNNNN more 2 3 NNN...

Page 32: ... SHORT 4ENTER EXECUTE5 2 Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN SHRT OFS ON Note After the ZERO SHORT measurement the 4194A goes to SINGLE SWEEP mode To select the REPEAT SWEEP mode press 4REPEAT5 until the light turns on Using the 4284A 4285A 1 Press 4MEAS SETUP5 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN CORRECTION 2 Place the cursor on SHORT using 4 5 4 5 4 5 4 5 3 Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN...

Page 33: ... in Figure 3 9 Figure 3 9 Separating the Test Fixture into High and Low Electrodes 2 Remove the shorting plate and select the spacer that is to be used to measure the liquid Then assemble the test xture Figure 3 10 Test Fixture Assemble for Measurement Operation 3 11 ...

Page 34: ... Capacitance and Resistance Cp Rp Measurement Warning Be careful when dealing with liquids especially volatile and or ammable liquid such as oil or organic solvents that can cause an accident Accidents such as an explosion ignition emission of poison gas scalding by heat or chemicals and so on are possible To prevent any accidents establish a strict process for the measurements For example using a...

Page 35: ...ing DO NOT enclose the liquid in the 16452A Carburetion of the liquid enclosed in the 16452A can cause an explosion of the 16452A 2 Measure the capacitance and equivalent parallel resistance value Cp Rp of the liquid under test and record the measurement data The data is used to calculate the dielectric parameter Warning DO NOT apply a dc test signal to the 16452A The dc signal can cause electroly...

Page 36: ...Drain the Liquid After Measurement 1 Turn the lid of the liquid outlet and take it o Drain the liquid Figure 3 12 Figure 3 12 Taking the Lid O 2 Wash and dry the test xture 3 14 Operation ...

Page 37: ...t _ to that of a vacuum 0 8 854 2 10012 _ r _ 0 Also _ r 0 r 0 j 00 r 2 Loss tangent tan 00 r 0r Where 0r Relative dielectric constant 00 r Dielectric loss The 16452A and Agilent impedance analyzer LCR meter use the Capacitive Method for obtaining relative permittivity by measuring the capacitance of a material that is sandwiched between parallel electrodes Capacitive Measurement Method The dielec...

Page 38: ...ce The stray capacitance can be cancelled by multiplying the correction coe cient as shown in equation 1 The value of is calculated by following equation 100j_ rmj 97 0442j_ rmj 2 9558 Figure 3 14 Correction Coe cient Where _ rm is the right side of equatrion 1 enclosed by _ rm Cp Co 0 j 1 CoRp Therefore j_ rmj rCp2 Co2 1 CoRp 2 3 16 Operation ...

Page 39: ...perties of the Agilent Technologies recommended cables are 0 to 55 C 16048A 020 to 125 C 16452 61601 When you use the thermocouple to monitor the inside temperature of the test xture be careful not to short the electrodes When you use the 16452A in an oil tank soak the whole circle shown in Figure 3 15 the circle shows the size and position of the liquid space of the 16452A Figure 3 15 Soaking the...

Page 40: ......

Page 41: ...OT perform any servicing other than that contained in the operating section unless you are quali ed to do so Assembly Replacement Table 4 1 Table 4 2 and Table 4 3 list the replaceable parts for the 16452A The parts listed can be ordered from your nearest Agilent Technologies O ce Ordering information must include the Agilent part number and the quantity required Service 4 1 ...

Page 42: ... 0 3 mm gap 16452 00602 1 Spacer 1 5 mm thickness 0 5 mm gap 16452 00603 1 Spacer 2 0 mm thickness 1 0 mm gap 16452 00604 1 Spacer 3 0 mm thickness 2 0 mm gap 4 16092 08010 1 Shorting Plate 5 0905 1275 2 O Ring 6 16452 24002 1 Lid of Liquid Outlet 0905 1277 1 O Ring for Lid 7 16452 60001 1 High Electrode Assembly1 8 1250 1200 4 SMA m BNC f Adapter 1 Assembling procedure of the electrode is describ...

Page 43: ...e Electrode 0905 1276 2 O Ring for the Cover 0515 0994 8 Screw for the Cover 1252 5831 4 Waterproof Cap for BNC Connector 16452 01201 2 Angle Iron for the Stand 16452 00611 1 Plate for the Stand Foot 0515 0914 8 M3 Screw for the Stand 16452 60101 1 Carrying Case 16452 90000 1 Operation and Service Manual Service 4 3 ...

Page 44: ...rts Around SMA Connector Ref Desig Agilent Part Number Qty Description 1 16452 61603 2 SMA Cable Assembly for High Electrode 16452 61602 2 SMA Cable Assembly for Low Electrode 2 16452 25001 4 Insulator 3 16452 29001 4 O Ring 4 16452 25002 8 Insulator 5 2190 0654 8 Washer M2 6 0515 0976 8 Screw M2 4 4 Service ...

Page 45: ...the cable into the electrode body and connect it using the insulators 4 the washers 5 and the screws 6 3 Bend the semi rigid cable at 33 mm from the top face of the electrode body as described in Figure 4 3 and set the angle between the semi rigid cables close to 90 4 Solder the semi rigid cables to the center pin of the electrode 5 Solder the shield of the cable to the copper round plate using so...

Page 46: ...bly replacement is required for restoring proper electrical performance When the short residual inductance is out of the limit check the angle of the semi rigid cables in back of the electrode assemblies The angle should be close to 90 Also check the shield of the semi rigid cables are connected only at the copper round plate Caution Do not polish the surface with powder to protect the electrode 4...

Page 47: ...t use the test xture with liquids that corrode these materials Typical corrosive liquids for each material are listed in the following sections Nickel Corrosive Liquid Corrosive liquid Little corrosive liquid Non corrosive liquid acid oxidant and salt oxidant For example nitric acid HNO3 nitrous acid HNO2 ferric chloride FeCl3 cupric chloride CuCl2 mercuric chloride HgCl2 acetic acid CH3CO2H 1 for...

Page 48: ...us solution of uoride corrodes the ceramic Viton Fluoro rubber Corrosive Liquid Ketone and ester corrode the Viton Silver copper and gold copper Strong acid liquid corrodes silver copper and gold copper A 2 Liquids that Corrode the T est Fixture ...

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