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1、J IS JAPANESE I NDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Gas detector tube measurement system (Length-of -Sta n type) ICs 71.040.40 Descriptors : gases, gas detectors, measuring instruments, pipes Reference number : JIS K 0804 : 1998 (E) PROTECTED BY COPYRIGHT 14
2、 S Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- K 0804 : 1998 Foreword This translation has been made bas
3、ed on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently JIS K 0804 : 1992 is replaced with JIS K 0804 : 1998. T
4、his revision has been made so as to be able to propose easily the draft of International Standard by considering the improvement of function and performance of machinery with the recent technical progress and the change of surroundings in use, in accordance with JIS Z 8301 : 1996 which has been newl
5、y revised for conforming to the corresponding International Standard. Date of Establishment: 1985-03-01 Date of Revision: 1998-04-20 Date of Public Notice in Official Gazette: 1998-04-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Environment JIS K 0804 : 1998, Fir
6、st English edition published in 2002-08 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JE is to be the final authority. O JSA 2002 All rights reserved. Unless otherwise
7、specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provide
8、d by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- K 0804 : 1998 Contents 1 2 3 4 4.1 4.2 Page Scope 1 Normative references 1 Definitions 1 Classification 1 1
9、3 Class of gas-sampling containers . Class of detecting tubes . 4.2.1 Classification according to reading system . 3 4.2.2 Class according to measuring objective gas 4 5 Quality and performance . 4 5.1 Quality and performance of gas sampling container 4 5.2 Quality and performance of detecting tube
10、5 6 Construction . 6 6.1 Gas sampling container 6 6.2 Detecting tube 6 7 Test method 6 7.1 Sampling method . 6 7.2 Standard conditions for test place . 6 7.3 Appearance . 6 7.4 Performance 7 7.4.1 Gas sampling container 7 7.4.2 Detecting tube 8 8 Marking . 9 8.1 Marking on gas sampling container . 9
11、 8.2 Marking on direct reading system detecting tube, concentration table of concentration table system detecting tube and storage case for detecting tube 9 PROTECTED BY COPYFiIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=
12、Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- K 0804 : 1998 9 Cautions on operation . Related standards . Attached Table i Normative references . Attached Table 2 Example of measuring objective gas and standard gas for testin
13、g. and approximate concentration range to be measured Annex (normative) Testing gas 1 2 3 3.1 3.2 Scope Testing gas when specified in JIS Testing gas when not specified in JIS The case where high purity matter or gas with known concentration is obtained . The case where high purity matter or gas wit
14、h known concentration is not obtained . 10 11 12 14 19 19 19 19 19 21 (ii) PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking per
15、mitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS K 0804 : 1998 Gas detector tube measurement system (Length-of-stain type) 1 detector tubes (hereafter referred to as “detector tube”) for short time. Scope This Japanese Industrial Standard specifies the length-of-stain type gas
16、2 Normative references The standards indicated in Attached Table 1 contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards (including amendments) shall be applied. 3 Definitions For the main terms used in this St
17、andard, the definitions shall be as follows. gas detector tube It is a gas detector composed of a detecting tube and a gas sampling container for detector tube (hereafter referred to as “gas sampling con- tainer”). length-of-stain type detecting tube It is a detecting tube filled with the reagent wh
18、ich reacts promptly with the component to be measured in sample gas and forms the boundary to distinguish clearly a reaction portion and an unreaction portion. detecting tube for short time It is a detecting tube for the purpose of mea- suring the concentration within ten-odd min. pre-treatment tube
19、 It is a tube filled with the pre-treatment agent for sample gas such as dehumidifying agent or decomposition reaction agent, etc. and used by connecting to detecting tube. internal volume of gas sampling container sucked by one time of ventilation operation. air-tightness of gas sampling container
20、It is the air leakage when the inside of gas sampling container is pressurized or decompressed and left as it is. ventilation time It is the time required for one time of ventilation operation. It is the volume of sample gas Classification 4.1 be as shown in Table 1. Class of gas-sampling containers
21、 The class of gas-sampling containers shall PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS
22、 -,-,- 2 K 0804 : 1998 Class Cylinder type Vacuum system Gas sampling system Remarks A system wherein the inside of the cylinder of a gas sampling container to which a detecting tube is connected, decompressed with a piston to suck Fig. 1 sample gas through the detecting tube. A system wherein after
23、 once sampling sample gas into the inside of the cylinder of a gas sampling container, the sample gas is discharged through a detecting tube with a piston. A system wherein bellows are compressed and the inside is made to a decompressed state by the stress of inner spring or the like, and sample gas
24、 is sucked through a detecting tube. - ,/j-checkvcyiier Guide mark Cutter for tip of detecting tube stopper A Fig. 2 Fig. 3 Detecting tube fitting opening I Packing Piston i ShaB Fig. 1 Example of vacuum system gas sampling container Detecting tube i-, Piston Gas sampling opening Fig. 2 Example of f
25、eed system gas sampling container PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- 3 K
26、 0804 : 1998 A system wherein the graduation for concentration printed on the surface of a detecting tube is directly read to obtain the concentration of an objective gas. Detecting tube , / fitting opening Fig. 4 Exhaust valve A system wherein the appended table for concentra- tion (l) is compared
27、with the discolored length of a detecting agent to obtain the concentration of an objective gas. - Indicator Spring Fig. 5 i. 6 Bellows Fig. 3 Example of bellows type gas sampling container 4.2 Class of detecting tubes 4.2.1 Classification according to reading system Classification of detecting tube
28、s according to the reading system shall be as given in Table 2. Table 2 Classification of detecting tubes according to reading system I classification I Reading system I Remarks I Direct reading system Concentration table system Note (1) The table for concentration herein is the table provided with
29、the graduation for concentration in order to correct the discolored length owing to dispersion on the inner diameter of a glass tube. Plug L Detecting agent Plug Fig. 4 Example of direct reading system detecting tube PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS und
30、er license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- 4 K 0804 : 1998 Fig. 5 Example of concentration table system detecting tube L 1500 1200 1 O00 800 600 400 300 200 1 O0 O
31、 Fig. 6 Example of concentration table and method to use 4.2.2 Class according to measuring objective gas The class according to a mea- suring objective gas shall be expressed by prefixing respectively the name of the mea- suring objective gas in Attached Table 2 to the detecting tube. 5 Quality and
32、 performance 5.1 Quality and performance of gas sampling container The quality and per- formance of a gas sampling container shall be as given in Table 3. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Jap
33、an, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- 5 K 0804 : 1998 Table 3 Quality and performance of gas sampling container Items Tests Quality and performance Rubber at the detecting tube fitting opening shall be free from crack, d
34、eformation, etc. Appearance 7.3 7.4.1 a) Internal volume ness system system Bellows Tolerance to the marked value of 9 a) Leak rate to the value of a measured internal volume -r5% within 3 % 7.4.1 b) 1) Leak rate to the value of a measured internal volume within 3 % 7.4.1 b) 2) Leak rate to the valu
35、e of a measured internal volume within 3 % 7.4.1 b) 3) Gas flowrate _ _ _ _ An error to the gas flow amount stated clearly in 9 b) for the gas sampling container having a sucking speed-regulation part built-in i 10 % 7.4.1 c) Durability After repeating gas flow operation 100 times, the quality and p
36、erformance on the internal volume, airtightness, and gas flowrate shall be satisfied. 7.4.1 d) 5.2 of a detecting tube shall be as given in Table 4. Quality and performance of detecting tube The quality and performance Table 4 Quality and performance of detecting tube Items Quality and performance T
37、ests Appearance 7.3 The appearance shall be free from pinhole, crack, flaw, etc., and the graduation of a direct reading system detecting tube shall be clear. Precision on indica- tion Error to the gas for testing of at least 113 the graduation range Indication value of detecting tube Mean value of
38、indication values within 25 % within 15 % 7.4.2 a Error to the gas for testing of at most 113 graduation range Indication value of detecting tube Mean value of indication values within 35 % within 25 % Error to the gas for testing measuring 18 % to 21 % in oxygen concentration Indication value of de
39、tecting tube Mean value of indication values within 8 % within 5 % within 20 % The value of ALIM as given in Fig. 9 7.4.2 b Slant of top end face of discoloration The precision on indication shall be satisfied at 10 “C * 2 “C and 30 “C f 2 “C in temperature 7.4.2 cl Influence by temperature The valu
40、e of Al as given in Fig. 10 within 2 mm 7.4.2 d) Slant of end face of detecting agent on gas inlet side PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo r
41、eproduction or networking permitted without license from IHS -,-,- 6 K 0804 : 1998 Test item Gas Appearance sampling container Internal volume Airtightness Gas flowrate 6 Construction 100 % test Sampling test O O O O 6.1 Gas sampling container The gas sampling container shall have a function wherein
42、 its inside is made to be pressurized or decompressed and a definite amount of sample gas is flowed into the detecting tube. For the sample gas container hav- ing the regulating function of suction speed, the speed of sample gas flowed into the detecting tube shall be regulated by the orifice and th
43、e like attached to the inside of detecting tube fitting opening. Appearance Precision on indication Slant at top end face of discoloration 6.2 The detecting tube and pretreating tube shall be as follows: a definite amount of a detecting agent or a pretreating agent is packed into a trans- parent tub
44、e such as a glass tube or the like wherein its inside diameter is uniform and its total length is equal; a plug or the like is applied so that the detecting agent or a pretreating agent is not loosened; and further both ends of the tube are her- metically sealed. The graduation of a direct reading s
45、ystem detecting tube shall not easily disappear. Detecting tube O O O 7 Test method Slant at end face of detecting agent on gas inlet side 7.1 Sampling method The sampling method shall be as shown in Table 5. The sampling test in this case shall be carried out according to JIS Z 9001. O Table 5 Samp
46、ling method I I 1 Durability I I OI Detecting tube Influence by temperature I IOI 7.2 Standard conditions for test place The standard conditions for test place shall be in accordance with JIS Z 8703 (20 5 2) “C in temperature, (65 -t 20) % in relative humidity, (86 to 106) kPa in atmospheric pressur
47、e. 7.3 Appearance Examine the crack, deformation, etc. of the rubber at the fitting opening of a detecting tube for a gas sampling container and the pinhole, crack, flaw, etc. for a detecting tube visually and by touching by hand. For the direct reading system detecting tube, examine visually the gr
48、aduation number and the graduation line. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 04:04:10 MSTNo reproduction or networking permitted without license from IHS -,-,- 7 K 0804 : 1998 - etecting tube r - ilIli v 7.4 Performance Gas container sampling 7.4.