JIS-B-7535-1982-R2003-ENG.pdf
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1、Printed in Japan J I S B*7535 82 m 4933608 0018958 5 m - Y - . - - d UDC 531.714.082.3 J IS JAPANESE I NDUSTRIAL STANDARD Flow Type Air Gauges JIS B 7 5 3 5 - 1 9 8 2 Translated and Published by . Japanese Standards Association 8s Copyright Japanese Standards Association Provided by IHS under licens
2、e with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*7535 812 W 4933608 0038959 9 0 Translation without guarantee standard in Japanese is to be evidence i n the event of any
3、doubt arising, the original Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,- UDC 531.714 082.3 JAPANESE IND
4、USTRIAL STANDARD J I S Flow Type Air Gauges B 7535-1982 1. Scope This Japanese Industrial Standard specifies the indicating part of the flow type air gauges, hereinafter referred to as the Ilair gaugesT1. Remark: The units and the numerical values given in are in accordance with the Gravimetric tem
5、of Units, and are appended for refer ence. in this standard 2. Definitions The definitions used in this standard shall be in accordance with JIS Z 8103 and other terms shall be as follows: e (1) flow type air gauges The flow type air gauge means the comparator which converts micro displacement amoun
6、t to an air amount flowed from the measurjng head and indicates it by enlarging with the float in the taper tube. (2) measuring head The measuring head means the measuring device having an air flowing-out part, hereinafter referred to as the I1nozzleI1, which generates the change of air flow with th
7、e displacement or the change of dimension by making the nozzle approach the measuring surface. Applicable Standards: JIS B 7505-Bourdon Tube Pressure Gauges JIS B 7506-Gauge Blocks JIS K 6771-Flexible Vinyl Tube JIS Z 8103-Glossary of Terms Used in instrumentation . Reference Standard: JIS Z 8703-St
8、andard Atmospheric Conditions for Testing Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B87535 82
9、m 4933b08 0018961 5 E 2 B 7535-1982 multiplying factor spacing divided by scale interval. The multiplying factor means the quotient of scale standard multiplying factor multiplying factor as the standard of performance. The standard multiplying factor means the multiple type indicating parts. The mu
10、ltiple type means the air gauge having plural effective indication range capable of being effectively measured within the indication range (whole scale range). The effective indication range means the range standard nozzle The standard nozzle means the nozzle used for the test of air gauge (Refer to
11、 Fig. 1 ) Fig. 1 . Standard Nozzle Uhit: mm I Block gauge reference point The reference point means the point indicating the graduation line as the standard for regulating multiplying factor in the test of performance, which decides the upper and lower limits of effective indication range, maximum m
12、easuring clearance the maximum clearance capable of being taken between the standard nozzle and the block gauge when the float indicates the graduation line of upper reference point in the case of regulating standard multiplying factor. The maximum measuring clearance means Copyright Japanese Standa
13、rds Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,- w J I S 8*7535 82 m 4733608 0038962 7 m 3 B 7535-1982 O) instrumental error The ins
14、trumental error means the difference between the value indicated by the block gauge equivalent to an arbitrary indicated value and the true value to be indicated after correctly adjusting the air gauge to the standard multiplying factor. 3. Names The names of main parts of air gauge shall be as give
15、n in Fig. 2. The single type means that having a single taper tube and the multiple type, that having plural (not less than two) taper tubes. Fig. 2 . Names of Main Parts (a) Single Type (b) Multiple Type 4. Thumbscrew for Thumbscrew Coupling joint for measuring head Regulator Coupling joint for air
16、 source Remark: Those figures are only to give the names, not to give the standard of shape and construction. Standard Multiplying Factor The standard multiplying factor of air gauges shall be 1000, 2000, 3000, 4000, 5000 and 10000 times, 5. Performance The performance of air gauge, the test of whic
17、h is carried out according to the test method specified in 7., shall be in .accordance with Table 1. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networkin
18、g permitted without license from IHS -,-,- JIS B*7535 82 W 4933608 0018963 9 E 4 B 7535-1982 al i k O rc( k E d a l I4 2 I P .r( Ei *a O d ou Co O ou u3 O d O m O ou “3. O - m O . u3 O O O O O d . Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1
19、111111001, User=Wing, Bernie Not for Resale, 03/14/2007 07:59:22 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 B 7535-1982 6. Appearance and Performance The appearance and performance of air gauge shall be as follows: ) The outer painting and plating shall be rigid and
20、shall not easily generate colour fade-out, peeling or rust. The coupling joint for measuring head shall be so constructed that the flexible vinyl tube of nominal diameter 4 mm given in JIS K 6771 or a tube equivalent thereto (4 mm in inner diameter and 7 mm in outer diameter) can be attached to. The
21、 piping path shall not have any air leakage influencing indication. The actuation of thumbscrew for multiplying factor adjustment and of that for zero point adjustment shall be smooth and not be easily moved. They shall have marking designating each thumbscrew for adjustment. The float shall not hav
22、e violent staggering during measurement and shall not be caught in the upper part of taper tube. For that having limit indexes, the limit indexes shall easily and certainly be able to be adjusted and not be moved during measurement. Each part of it shall not generate disorder harmful to practical us
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