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1、JIS JAPANESE INDUSTRIAL STANDARD Trip Balances JIS B 760 I -1983 Translated and Published by Japanese Standards Association Printed in Japan UDC 681.261 8s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resa
2、le, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- Translation without guarantee standard in Japanese is to be evidence i n the event of any doubt arising, the original Copyright Japanese Standards Association Provided by IHS under license with JSALicen
3、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*7bOL 83 4933608 0019LL3 0 9 UDC 681.261 JAPANESE INDUSTRIAL STANDARD J I S Trip Balances B 7601-1983 1. Scope This Japanese Industrial
4、 Standard specifies the trip balances and weights to be used with attached thereto. Remark: The trip balance in this standard means the balance of which weight application point and load application point are at the equal distance relative to fulcrum as center, of which pans are above the weight app
5、lication point and load application point respectively, and which is to judge the balance by the pointer and graduated panel. manual balance in the type of massmeter specified in the Measuring Instrument Qualification Inspection Ordinance (Cabinet Ordinance No. 152, in 1967). This balance correspond
6、s to the pan 2. Definitions For the purposes of this standard the definitions specified in JIS Z 8103 apply, together with the following definitions: (1) weighing capacity The maximum mass capable of being measured. (2) reciprocal sensibility The mass sufficient to cause variation of not less than 1
7、/2 of the scale spacing of graduated panel. (3) graduated panel order to judge the balance in combination with a pointer. The panel graduated without expressing the mass in (4) working range The effective measuring range from 20 times the reciprocal sensibility to weighing capacity. (5) weight appli
8、cation point The point of application of load by weight. ( 6 ) measuring load application point substance to be measured. The point of application of load by Applicable Standards: See page 11. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/11111
9、11001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S BU7601 3 4933608 0019114 2 2 B 7601-1983 (7) instrumental error The error generated by the difference of dis- tances of. measuring load application point and w
10、eight application point relative to fulcrum. (8) eccentric-placing error on a eccentric position of pan. The error generated when the load is placed 3. Name of Main Parts The name of main parts of trip balance shall be as given in Fig. 1. Fig. 1. Name of Main Parts Graduated panel ulcrum blade point
11、 blade cover Connecting rod Foundation bed Founda i t i on In the Case of Having Rectangular Window /Steady rest ,Connecting rod Sub-beam Fulcrum rod l a r Remark: Fig. 1 shows only names, and does not show the reference of shape. Copyright Japanese Standards Association Provided by IHS under licens
12、e with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*7bOl1 83 W 4933608 0019LL5 4 M _ t 3 B 7601-1983 - 4. Classification The classification of t r i p balances shall be de
13、pendent on weighing capacity and reciprocal sensibility as shown i n Table 1. Weighing capacity 50 g 100 g 200 g 500 g 1 kg 2 kg 5 kg 10 kg Table 1 Reciprocal sensibility Precise type Less than 50 mg Less than 100 mg Less than 200 mg Less than 500 m g Less than 1 g L e s s than 2 g Less than 5 g L e
14、 s s than 10 g Ordinary type 50 m g 100 m g 200 mg 500 m g 1 g 2 9 5 g 10 g Remark: The precise type means that its reciprocal sensi- b i l i t y is less than 1/1000 of weighing capacity. The ordinary type means that its reciprocal sensibility is equal t o 1/1000 of weighing capa- city. 5. Performan
15、ces and Inspection Methods The performances and inspection methods of t r i p balances shall be i n accordance with the following: (1) When the load of reciprocal sensibility is applied on one side pan under the state where the same masses in the working range are applied on right and l e f t pans,
16、the t i p of the pointer shall displace by half or more of the scale spacing of the graduated panel. state where the laads of weighing capacity are applied on the right and l e f t pans. The inspection shall be carried out under the blank state and the The instrumental error shall be not more than t
17、he reciprocal sensi- b i l i t y where the measuring quantity exceeds 1/4 of the weighing capacity, and be not more than half the reciprocal sensibility where it is not more than 1/4 of the weighing capacity. The inspection shall be carried out by measuring the differences of the rest points when th
18、e weights of the same mass are put on the centers of right and l e f t pans respectively concerning the masses of weighing capacity and about 1/4 of that from the rest point at the blank load. The weights t o be used for inspection shall be those of which tolerances of mass are not more than 1/5 of
19、tolerance of instrumental error of t r i p balance t o be inspected. (3) The eccentric-placing error shall not exceed the reciprocal sensibi- l i t y , Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale,
20、03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- - J I S B*7bOL 83 4933b08 OOLLLb b 4 B 7601-1983 The inspection shall be carried out by measuring the difference of rest point when the weights having mass of about 1/4 of the weighing capacity are placed o
21、n the centers of right and l e f t pans from the rest points when the weights are placed as shown i n Fig. 2. Fig. 2. Measurement of Eccentric-placing Errors (4) The difference of rest points under blank load before and a f t e r measurement shall not exceed half the reciprocal sensibility. 6. Const
22、ruction and Dimensions The construction and dimensions of the t r i p balance shall. be as follows: The balance shall be provided with a beam and a sub-beam as the mechanism for overturning prevention for pans. The pan stop shall be supported on two positions respectively of the weight application p
23、oint or measuring load application point. The weight application point and measuring load application point shall be at the same distance with the fulcrum as center. The pointer shall oscilate with the center l i n e of graduated panel as center. The t i p of pointer shall move by not less than the
24、graduation range of the graduated panel. The thickness of indicating part of the pointer shall be not more than 1/5 of scale spacing. The interval between the pointer and the graduated panel shall be not more than 1 mm for the weighing capacity of not more than 1 kg, and not more than 2 mm for the w
25、eighing capacity exceeding 1 kg. The dimensions of the pan shall bein accordance with Table 2. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking perm
26、itted without license from IHS -,-,- , J I S B87bOl 83 W 4933b08 OOlll7 - A W 5 B 7601-1983 Table 2. Dimensions of Pan Unit: mm D 70f 1 70f 1 80f 1 105f 1 125f 2 155f 5 190f10 240f15 d 10f2 10f2 12f2 16f2 18f2 20f2 25&5 25f5 (9) The difference of masses of right and left pans shall not exceed the re
27、ciprocal sensibility. (10) The adjust screw shall be in accordance with Table 3. Table 3. Adjust Screw Weighing capacity Adjust screw ( l ) M 2.3 M 2.3 M 2.3 M 3 M 3 M 4 M 5 M 8 1 Note ( ) The adjust screw shall be in accordance with JIS B 0205. (11) (12) The adjusting ball shall not easily be loose
28、ned during working. The number of graduated lines of the graduated panel shall be not less than three on each right and left side of the central line. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 0
29、3/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*7bBL 83 4933608 BOLiLLgl T 6 B 7601-1983 (13) The scale spacing of the graduated panel shall be not less than 1 mm, and the difference between each scale spacing shall be not more than 1/10 of the mi
30、nimum scale spacing, (14) The thickness of the graduated line of the graduated panel shall be not less than 0.1 mm and not more than 1/6 of the scale spacing. 7. Materials and Hardness The materials and the hardness of main parts of the t r i p balance shall be those given i n Table 4 or those equal
31、 or superior thereto. Table 4. Materials and Hardness of Main Parts Main part Blade Blade receiver Blade cover Sub-beam pin 8. Weights Mat er ia 1 SK 3 of JIS G 4401 SK 4 of JIS G 4401 S 45 C of JIS G 4051 SWP-A of JIS G 3522 Hardness HV 633 or not less than HRC 57 HV 633 or not less than HRC 57 HV
32、633 or not less than HRC 57 8 . 1 Classification The weights t o be used for t r i p balance shall be classified into two types of J type and O type according t o the shape. 8.2 Marked Mass The marked m a s s of the weight shall be i n accordance with Table 5. Table 5. Marked Mass of Weights 50 mg,
33、100 mg, 200 mg, 500 mg, Remark: The weight less than 1 g, when specially specified, may be marked with the numerical value according to g. 8.3 Tolerances on Mass The tolerances on the mass of weight shall be as given i n Table 6. , The inspection on the mass of weight shall be carried out according
34、t o the substitution method by the use of t r i p balance (2) and weights (3). Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without li
35、cense from IHS -,-,- 7 B 7601-1983 2 Notes ( ) Its reciprocal sensibility shall be not more than the mass corresponding to tolerances on mass of weight (Table 6) to be measured. 3 ( ) The tolerances on its mass shall be within 1/5 of the tolerances on mass of the weight (Table 6) to be measured. Tab
36、le 6. Tolerances on Mass of Weight Marked mass I Tolerances 50 mg 100 mg 200 mg 500 mg 1 g 2 g 5 g 10 g f 0.7mg f l.Omg & 1.5mg f 3 mg z k 6 mg f 5 mg f10 mg f 2 0 mg Marked mass Tolerances f 20mg f 30mg f 30mg f 50mg f 1 0 0 mg f200 mg f4O mg f800 mg 8.4 Shape, Dimensions and Construction The shape
37、, dimensions and construction of weight shall be as follows: (1) The shape and dimensions of weight shall be as given in Fig. 2 or Fig. 3 and in Table 7 or Table 8 according to the type. However, the dimensions concerning the weight of less than 1 g are not specified, Less than 1 g Fig. 3. Shape of
38、Type J Weight From 1 g up to and Not less than 500 g including 200 g I & A 1 Remark: The weight of less than 1 g shall be bent with folding on one side so as to be easy to pinch. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wi
39、ng, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*7603 83 W 4933608 0019120 8 8 B 7601-1983 Table 7. Dimensions of J Type Weights In the Case of C 3602 B 9.5 1 g 2 g 9.8 5 g 12.7 I Marked mass 10 g 12.8 20 g 14.9 50 g 19.
40、8 100 g 24, 8 200 g 31.8 500 g 41.5 1 kg 51.5 2 kg 64.5 5 kg 91. o I A Marked mass1 A 1g 9.8 2 g 9.8 5 g 12.7 10 g 12.8 20 g 14.8 50 g 19.8 100 g 24.8 200 g 31,8 500 g 42. O 1 kg 52. O 2 kg 65. O 5 kg 91. o BIC 1.3 3.5 2.7 4. o 3.9 5. O 8.5 5. o 12.7 6.5 18.3 8. o 22.3 12. o 27.5 14. o 40.5 20. o 54
41、.9 23. O 63.3 29. O 91. o 50. O D 4.8 6.7 8.9 13.5 19.2 26.3 34.3 41.5 60.5 77. o 97.5 141. O E 3.5 4. o 5.5 5.5 6.5 8. O 11. o 14. O ,17* o 20. o 27. O 33. o B In the Case of SUS 304 1.2 2.9 4.3 9.2 13.7 19.6 24. O 30. O 43. o 57. o 71. O 92. O 3.8 5. O 3.9 6.8 4.7 9. o 4.8 14. O 6.3 20. o 7.7 27.3
42、 11.4 35.4 13. O 43. o 19. o 62. O 23. O 80. O 29.0 100.0 50. O 142. O E 4. o 4. o 5.5 5.5 6.5 8. O 12. o 14. O 18, O 21. o 28. O 33. o F 2.5 2.5 3.5 3.5 4. o 5, O 8.5 10. o 14. O 16. O 22. o 25. O F 3.5 3.5 4.5 4.5 5. o 7. o 10. o 11. o 15. O 17, O 23.5 25. O on dimension lS5 1.5 I : 1.5 1 f 0.2 1.
43、5 f 0.2 2.5 f 0.3 2.5 - 1 . 0.3 3. o f 0.3 4. o f 0.3 5. O f 0.5 6. O f 0.5 8. O rt 0.5 15. O f 1.0 Unit: mm Tolerances on dimension 1. o f 0.2 1. o f 0.2 1.5 f 0.2 1.5 * 0.2 1.5 rt 0.5 2. o f 0.5 2.5 f 0.5 3. o f 1.0 I 5. o f 2.0 8. O f 2.0 9. o f 2.0 15. O f 2.0 Copyright Japanese Standards Associ
44、ation Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- c o. 5 o . 5 o. 5 o . 5 o . 5 1 1 1.5 1.5 2 2 2 50 mg, 500 mg f 0.2 f 0.2 f 0.2 f 0.2 f 0.5 f
45、 0.5 f 1.0 f 2.0 f 2.0 f 2.0 f 2.0 f2.0 9 B 7601-1983 5g 10 g 20 g 50 100 g 200 g 500 g Fig. 4. Shape of O Type Weight 100 m g 200 mg Not less than 1 g 8 10 13 18 22 28 38 n b Remark: The weight of less than 1 g shall be bent with folding on one side so as t o be easy t o pinch. Marked mass1 A / I +
46、A I Table 8. Dimensions of O Type Weight Unit: mm E 5.5 5.5 7 9 11.5 16 20 25 34 43 54 72 F 3 3 4.5 6 7.5 10 13 16 22 27 36 46 D I 1 1 1.4 1.6 2 3 4 4.5 6 8 10 13 R o. 9 o . 9 1,25 1.5 1.8 2.5 3.5 4 5.5 7 9 12 c - Tolerances on dimension (2) The weight may be provided with a adjusting hole. (3) The
47、mass of weight shall be adjusted by taking the density of the material as 8 g/cm3 (in the case of aluminium and aluminium alloy, 2.7 g/cm3). Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007
48、03:47:23 MDTNo reproduction or networking permitted without license from IHS -,-,- . * JIS B*7b03 3 m.4933bO O039322 I Marked mass 10 B 7601-1983 Mat er ia1 8.5 Materials The material to be used for weight shall be that given in Table 9 or that equal or superior thereto in hardness and corrosion resistance. Table 9. Material to Be Used for Weight C 7351 P