the impressor hand-held portable hardness tester · 2014-07-14 · page 4 of 8 the impressor...
TRANSCRIPT
Instruction Manual
August 2011
The ImpressorHand-Held Portable
Hardness Tester
1260-IN-010-0-04© Copyright Eurotherm Limited 2011
Page 2 of 8
The Impressor
1260-IN-010-0-04
Operation
The Impressor is intended for handheld testing of hardness for aluminum andaluminum alloys, soft metals, plastics, fiberglass, rubber and leather. Hardermaterials cannot be tested with the Impressor. For information on the availablemodels, refer to the current revision of our product guide.
To test a surface, place the indenter point and the leg of the impressor on the sameplane of the surface. To insure reading accuracy, make certain that no indenta-tions from previous use are within 1/16th of an inch of the present indenter pointposition. Readings should not be taken on both sides of the 1/32nd inch-thick testdisks. Readings taken on top of old indentations will adversely affect the accuracyof the reading. An ample supply of appropriate test disks should be maintained forthese reasons.
Press down firmly, but carefully, on the impressor handle. Observe the indicator,noting the peak reading. For softer materials there will be some falling-off of thereading from the peak value. This is normal and is due to the nature of the materialsbeing tested.
As a general rule, you should increase the number of readings taken as thesoftness of the materials being tested increases. Refer to the table below forrecommended minimal numbers of readings for various materials using the ModelGYZJ 934-1. Though specific numbers for Models GYZJ 935 and GYZJ 936 arenot included due to correlation difficulties with softer materials, the numberssuggested for reinforced plastics serve as a starting point for softer materials.
Recommended Numbers of Reading for Model 934-1
Homogeneous Material:
Reinforced Plastics:
1-439-JZYGegnaRgnidaeR
egarevAnaroFfoecnairaV
rebmuNdednemmoceRsgnidaeRfo
08 82. 3007 82. 4006 82. 5005 82. 6004 82. 7003 82. 8002 82. 90
07 27. 5006 87. 00 105 57. 60 104 87. 20 203 77. 90 2
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1260-IN-010-0-04 Page 3 of 8
The ImpressorOperation (continued)
The indenter point must always be perpendicular to the surface being tested. Tomaintain perpendicularity, the leg of the Impressor must be on the same plane asthe indenter point, with both flats of the leg touching the same surface. Irregularly-shaped objects to be tested should be mounted in a holding jig to assure thatperpendicularity is maintained. For flat objects, a temporary offset of the leg toaccommodate the thickness of the part being tested can be obtained by placementof washers of appropriate thickness between the leg and the case of the impressor.Without perpendicularity, accuracy of the reading cannot be assured.
Maintenance
The Impressor is a precision mechanical instrument and should always be handledwith care. The deflection indicator built-in to the Impressor has a normal readingof zero when not in use.
The Indenter Point has a tip precisely-machined to very small dimensions. Itshould be used with care to prevent damage. Avoid sliding or scraping the IndenterPoint when it is in contact with the surface being tested. If the Indenter Point isdamaged, it must be replaced with a new one. The Impressor ships with two spareIndenter Points.
WARNINGDo not attempt to regrind an Indenter Point when damaged! The mechani-cal dimensions of the Indenter Point determine the accuracy of readingsand will create erroneous reading when reground.
To check the condition of the indenter point, first visually inspect it for damage.Then place the impressor on a hard, flat surface with the appropriate test diskpositioned under the indenter point. Press the impressor handle down firmly, butcarefully, to avoid sideways slippage of the indenter point. The reading on theindicator should be within the range of values stamped on the test disk. If it is not,refer to the calibration procedure below.
Replacing the Indenter Point
1. Clean the new indenter with alcohol.2. Remove the two screws that hold the impressor case halves together (see
Figure 1).3. Lift out the frame while holding the spring sleeve in place (so it will not fall off)
until it can be removed.4. Loosen the plunger upper guide nut with the provided wrench until the cross-
notched top lip protrudes above the frame.5. Hold the impressor upside down (so the spring and plunger wonʼt fall out), then
loosen the locknut with the provided wrench and remove the lower plunger guide.6. Replace the indenter point in the lower plunger guide, then re-install the lower
plunger guide, leaving about 3/16 of an inch of thread protruding below the frame.7. Tighten the lock nut, then operate the Impressor against a moderately hard
surface 20 to 30 times in order to properly seat the indenter.8. Tighten the plunger upper guide nut until its top is flush with the frame.9. Calibrate the impressor per the procedure below.
10. Replace the spring sleeve, reassemble the case halves and screws, and testfor the appropriate reading on the test disks.
Invensys Systems, Inc. 44621 Guilford Drive Suite 100, Ashburn, VA, 20147, USA(+1 703) 724 7300
Page 4 of 8
The Impressor
1260-IN-010-0-04
Maintenance (continued)
Calibration Procedure
For the GYZJ-934-1:1. Set the top adjustment nut about 1/16 inch below the top of the frame.2. Calibrate against the 87/89 disk using the bottom adjustment nut.3. Calibrate against the 43-48 disk using the top adjustment nut.4. Repeat steps 2 and 3 until both readings are within specifications.
For the GYZJ-935 and GYZJ-936:1. Set the top adjustment nut about even with the top of the frame.2. Calibrate against the test disk using the bottom adjustment nut.
Test Disks for the Model 934-1
Use the GYZJ 250 test disk stamped 87/89 for the model GYZJ 934-1 in step 2above. Then use the GYZJ 78 test disk labelled 43-48 in step 3. Iterate betweenthese test disks until the optimum reading for both disks is obtained. Thisprocedure will provide the optimum accuracy over the entire range of the 934-1.If optimized readings cannot be obtained on both test disks, it is an indicationthat the indenter point may be damaged. Replacement of the indenterpoint is recommended.
The above procedure can also be used between any two reference materials withknown Barcol values at the extremes of a portion of the impressor reading range.Calibration at these known values will provide enhanced accuracy within thatportion of the range, but not outside of that range.
Test Disk for the Model 935
Use the GYZJ 69 test disk stamped 87-89 for the Model GYZJ 935 in step 2 above.
Test Disk for the Model 936
Use the GYZJ 70 test disk stamped 48-50 for the model GYZJ 936 in step 2 above.
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1260-IN-010-0-04 Page 5 of 8
The ImpressorSpecifications
Note: Physical characteristics of very soft materials are such that uniform correlationbetween different hardness measuring systems cannot be established. For thisreason, conversion curves should be considered tentative. We recommend thatimpressor hardness limits for each material be established by test.
Typical Readings of Aluminum Alloys
Alloy and Temper: 1100-0 3003-0 3003H14 2024-0 5052-0 5052H14 6061T6 2024T3GYZJ-934-1 reading: 35 42 56 60 62 75 80 85
Approximate Conversion Curvesfor GYZJ-934-1
Approximate Conversion Curvesfor GYZJ-935 & GYZJ-936
50 60 70 80 90
20
30
40
0
10
50
60
70
80
90
GYZJ
-935
GYZJ-936
retemaru
D D epyT
Impressor Dial Indication
40 50 60 70 80 90 100
Rockwell “B” (1/16” ball 100 kg load)Rockwell “E” (1/8” ball 100 kg load)Rockwell “F” (1/16” ball 60 kg load)Brinnell (10 mm ball 500 kg load)Vickers Pyramid Numbers
Brin
nellVi
cker
s
35
20
30
40
0
10
50
60
70
80
90
100
110
120
130
140
WebsterRoc
kwell
“B”
Rockwell “E”
Rockwell “F”
Rockwell “H“
srebmu
N srekciV-llenirB-lle
wkcoR
Barber-Colman Impressor Number
Invensys Systems, Inc. 44621 Guilford Drive Suite 100, Ashburn, VA, 20147, USA(+1 703) 724 7300
Page 6 of 8
The Impressor
1260-IN-010-0-04
Operating Information (continued)
Approximate Conversion Chart for GYZJ-934-1 Appoximate Conversion Chart forGYZJ-935 and GYZJ-936
1-439-JZYG lennirBgk005mm01
srekciVgk5
retsbeWBledoM
llewkcoRB E F H
5 13 22 36 23 52 37 33 72 38 43 02 49 53 22 404 52 6 52 414 52 7 72 424 62 8 92 434 72 9 12 544 72 0 43 554 82 0 63 564 92 1 83 574 03 2 33 2 0684 03 33 7.0 62 2694 13 43 3.1 82 4605 23 53 9.1 13 6615 33 63 5.2 43 8625 43 83 1.3 63 0735 53 93 6.3 93 03 2745 73 04 2.4 14 43 3755 83 14 7.4 44 73 5765 93 34 3.5 64 04 7775 04 44 8.5 84 34 8785 24 54 3.6 05 64 0895 34 74 8.6 35 84 2806 54 94 3.7 55 15 3816 64 05 8.7 75 45 5826 84 25 3.8 95 65 6836 05 45 8.8 16 95 8846 15 65 2.9 36 16 9856 35 85 7.9 56 36 0966 55 06 1.01 76 66 2976 75 26 6.01 96 86 3986 06 56 0.11 17 07 4996 26 76 4.11 37 27 5907 46 07 8.11 71 57 47 7917 76 27 2.21 32 67 57 8927 96 57 6.21 82 87 77 9937 27 87 9.21 33 08 97 00147 57 18 3.31 83 18 08 10157 87 58 7.31 24 38 28 20167 08 88 0.41 74 48 38 30177 48 29 3.41 15 68 58 40187 78 59 7.41 55 78 68 50197 09 99 0.51 95 98 88 60108 49 301 3.51 36 09 98 60118 79 801 6.51 66 19 09 70128 101 211 9.51 07 29 19 80138 501 711 2.61 37 49 29 90148 901 121 4.61 67 59 39 90158 311 621 7.61 97 69 49 01168 711 131 9.61 18 79 59 11178 121 731 2.71 48 89 69 11188 621 241 4.71 68 99 79 21198 03 61 .71 88 001 89 21109 53 81 .71 09 101 89 31119 04 01 .8 21 01 99 41129 54 21 .8 31 01 0013 49 .8 31 01 0014 69 .8 41 01 1015 79 .8 51 01 2016 99 .8 61 01 2017 09 .9 61 01 3018 29 .9 71 019 39 .9 71 0100 41 .9 81 01
DepyTretemoruD 539-JZY 6G 39-JZYG
2 653 954 25 15 55 16 85 17 15 28 45 29 75 20 06 31 26 32 56 33 86 34 06 45 36 46 56 47 86 486 22 0596 62 2507 03 4517 43 7527 83 9537 14 1647 54 3657 84 5667 15 7677 45 9687 75 0797 06 2708 36 4718 66 6728 96 7738 17 9748 47 0858 67 2868 97 3878 18 5888 38 6898 58 7809 78 88
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1260-IN-010-0-04 Page 7 of 8
The ImpressorRepair Parts
Contact factory (RPPL) for repair parts prices
Figure 1. Impressor Cutaway
Item GYZJ-934-1 GYZJ-935 GYZJ-936 Description Qty
1gnirpS26-SRYA26-SRYA26-SRYA12wercS revoC4113-FRYB4113-FRYB4113-FRYB2
3 BYRF-250 BYRF-250 BYRF-250 Frame Screw 14 GYZJ-2 GYZJ-2 GYZJ-2 Plunger Upper Guide Nut 15 GYZJ-3 AYRS-146-1 AYRS-146-1 Spring† 1
1regnulP1-4-JZYG1-4-JZYG1-4-JZYG67 GYZJ-6-5 GYZJ-6-5 GYZJ-67 Indenter Point† 1
1reveL7-JZYG7-JZYG7-JZYG81niP8-JZYG8-JZYG8-JZYG91niP812-ARYD812-ARYD812-ARYD01
11 GYZJ-15-2 GYZJ-15-2 GYZJ-15-2 Indicator (not field servicable) 11tuN kcoL61-JZYG61-JZYG61-JZYG211hcnerW1-71-JZYG1-71-JZYG1-71-JZYG-
- GYZJ-19-2 GYZJ-19-2 GYZJ-19-2 Carrying Case 113 GYZJ-23-1 GYZJ-23-1 GYZJ-23-1 Case & Frame Assembly 1
1gniR potS16-JZYG16-JZYG16-JZYG411eveelS tnioP26-JZYG26-JZYG26-JZYG51
16 GYZJ-63 GYZJ-63 GYZJ-63 Spring Sleeve 117 GYZJ-64 GYZJ-64 GYZJ-71 Lower Plunger Guide† 1
1geL56-JZYG56-JZYG56-JZYG8119 GYZJ-79-1 GYZJ-79-2 GYZJ-79-3 Label†
† Parts required to convert between models.
Hardness TesterModel RangeGYZJ-934-1 25 to 50 Brinell (10 mm ball 500 kg load)GYZJ-935 For softer plastic and very soft metalsGYZJ-936 For extremely soft material
Invensys Systems, Inc. 44621 Guilford Drive Suite 100, Ashburn, VA, 20147, USA(+1 703) 724 7300
Certified Test DisksPart No. Use with Model Scale
GYZJ-069-100 Set of 5 GYZJ-935 87 GYZJ-070-100 Set of 5 GYZJ-936 48 – 50GYZJ-078-100 Set of 5 GYZJ-934-1 43 – 48GYZJ-250-100 Set of 5 GYZJ-934-1 87/89
Standard Test Disks GYZJ-069 Each GYZJ-935 87 – 89GYZJ-070 Each GYZJ-936 48 – 50GYZJ-078 Each GYZJ-934-1 43 – 48GYZJ-250 Each GYZJ-934-1 87/89
Impressor Instruction ManualEurotherm Part No. 1260-IN-010-0-04 Issue 1 REV 1 August 2011 1 8
Invensys Systems, Inc. 44621 Guilford Drive Suite 100, Ashburn, VA, 20147, USA(+1 703) 724 7300
Eurotherm: International sales and service www.eurotherm.com
© Copyright Eurotherm Limited 2011
Invensys, Eurotherm, the Eurotherm logo, Chessell, EurothermSuite, Mini8, Eycon, Eyris, EPower nanodac, Foxboro and Wonderware aretrademarks of Invensys plc, its subsidiaries and affiliates. All other brands may be trademarks of their respective owners.
All rights are strictly reserved. No part of this document may be reproduced, modified, or transmitted in any form by any means, nor may it bestored in a retrieval system other than for the purpose to act as an aid in operating the equipment to which the document relates, without the priorwritten permission of Eurotherm Limited.
Eurotherm Limited pursues a policy of continuous development and product improvement. The specifications in this document may therefore bechanged without notice. The information in this document is given in good faith, but is intended for guidance only.
Eurotherm Limited will accept no responsibility for any losses arising from errors in this document.
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