1、BRITISH STANDARD BS9220 N001:1971 Detail specification forordinary rectangular (2:1) rigid waveguide tubing Standard wall thickness General application category UDC 621.372.822BS9220 N001:1971 BSI04-2000 ISBN 0 580 06278 3 A British Standard does not purport to include all the necessary provisions o
2、f a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to8 and a back cov
3、er. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBS9220 N001:1971 BSI 04-2000 i Contents Page 1 Ratings (including limit
4、ing conditions of use) and characteristics 1 2 Marking 2 3 Related documents 2 4 Ordering information 2 5 Certified test records 2 6 Test schedule 3 Table 1A Dimensions for ordinary rectangular waveguide type R 5 Table 1B Dimensions for ordinary rectangular waveguide type R 6 Table 2 Surface roughne
5、ss in micrometres and micro-inches 7 Table 3 Weight data for ordinary rectangular waveguide type R 8ii blankBS9220 N001:1971 BSI 04-2000 1 1 Ratings (including limiting conditions of use) and characteristics 1.1 Nominal internal width and operating frequency range. Alternate sizes in the tables have
6、 been chosen from two staggered series, each covering the frequency range in steps with a frequency ratio of approximately1.5. The nominal frequency range is approximately from1.25R cto1.9R c(R c= cut-off frequency of dominant mode). For any particular type of application the effective frequency ran
7、ge may be smaller or greater than the nominal frequency range. The actual frequency range required in a specific case may not fall into the effective working frequency range of a waveguide size in one series. The other series will then generally be found suitable. In the table the two series are com
8、bined. 1.2 Theoretical power rating. The values quoted are the theoretical breakdown values at a frequency1.5 times the cut-off frequency (assuming breakdown in air at N.T.P. to occur at30000V/cm). The figures quoted include a power safety factor of two as well as allowance for a voltage standing wa
9、ve ratio of0.5(33% voltage reflection coefficient). For other frequencies the values quoted should be multiplied by: 1.3 Ratio between inside width and height. The standard ratio of inside width to inside height is in principle2 : 1. For some types of waveguides given in this specification this rati
10、o has not been observed because a different value of the ratio was already in extensive use. 1.4 Deviation on inside width and height. Deviations for the inside width and heights are in principle 1/750 of the internal width. For the smallest sizes the normal deviation is 0.020mm( 0.0008in), which re
11、presents a departure from the principle mentioned above. 1.5 Theoretical attenuation. The values given in the tables are based on a figure for the resistivity of copper1.7241 10 87 m and apply to a frequency equal to1.5R c . For the general case attenuation is given by the following formula: ELECTRO
12、NIC PARTS OF ASSESSED QUALITY: DETAIL SPECIFICATION OUTLINE DRAWING RIGID WAVEGUIDE TUBING ORDINARY RECTANGULAR (2:1) STANDARD WALL THICKNESS GENERAL APPLICATION CATEGORY Type R70 Type R320 Examples of cross section For dimensions see tables R5 TO R1200 MATERIALS: CLASSES1 TO4 where = resistivity of
13、 inside non-magnetic wall metal, o = resistivity of copper=1.7241 10 87 m, a = inside width in millimetres, b = inside height in millimetres, R c = cut-off frequency for H o1(TE o1 ) mode = GHz, R = frequency at which the attenuation is to be calculated. 149.9 a -BS9220 N001:1971 2 BSI 04-2000 For o
14、ther materials multiply the values quoted by the factor given in the following table: 2 Marking The marking shall be in accordance with1.1.6 of BS9220 except that for sizes smaller than R500 each length of waveguide shall be marked by durable labels attached to the waveguide. 3 Related documents BS9
15、220, Rigid waveguide tubing of assessed quality: Generic data and methods of test. BS2871, Schedule of copper and copper alloys. Tubes. BS1471, Wrought aluminium and aluminium alloys for general engineering purposes. Drawn tube. BS3839, Oxygen-free high conductivity copper for electronic valves and
16、semiconductor devices. 4 Ordering information Orders for waveguides conforming to the requirements of this specification shall contain the following information in accordance with the requirements of1.1.15 of BS9220: 1) BS number of this detail specification. 2) Reference code (see1.1.6.2 of BS9220:
17、1971). 3) Piece length. 5 Certified test records The CTR, as issued at6-monthly intervals, will contain attributes information for all subgroup A2 tests. In addition, the CTR will contain measurements information for all Group D tests. Material Code Letter Resistivity 7 m( 10 8 ) Factor Aluminium to
18、 BS1471 T1C Aluminium alloy to BS1471 NT4 Aluminium alloy to BS1471 NT6 Aluminium alloy to BS1471 HT9 Aluminium alloy to BS1471 HT15 Aluminium alloy to BS1471 HT20 Aluminium alloy to BS1471 HT30 A B C D E F G 2.83.0 4.64.9 6.46.5 3.33.5 4.85.0 4.04.3 3.43.8 1.2751.320 1.6351.685 1.9301.945 1.3801.42
19、5 1.6701.705 1.5251.580 1.4051.490 Brass to BS2871 CZ101 Brass to BS2871 CZ105 Copper to BS2871 C101 or C102 Copper to BS2871 C103 Copper to BS2871 C106 Copper to BS3839 Silver(92.5% silver7.5% copper) H J K L M N S (Annealed) 3.90 6.2 1.724 1.737 1.724 2.436 1.724 1.80 (Drawn) 4.3 7.8 1.777 1.777 1
20、.777 2.538 1.777 (Annealed) 1.505 1.895 1.000 1.002 1.000 1.190 1.000 1.020 (Drawn) 1.580 2.130 1.015 1.015 1.015 1.213 1.015 BS9220 N001:1971 BSI 04-2000 3 6 Test schedule The sample size for the Group D inspection of each class of material shall be one tube, selected at random for each of the appr
21、oval ranges of sizes listed below: Ranges of sizes Classes of materials Range1. R5 to R26. Length to be2m(6ft6in) Range2. R32 to R70. Length to be2m(6ft6in) Range3. R84 to R140. Length to be1m(3ft3in) Range4. R180 to R500. Length to be1m(3ft3in) Range5. R620 to R1200. Length to be1m(3ft3in) Class1.
22、Aluminium or aluminium alloys containing not less than95% aluminium Class2. Copper zinc alloys containing between1% and35% zinc Class3. Copper with not more than1% of other materials Class4. Silver or silver copper alloys containing more than87% silver Inspection requirements Inspection BS9220:1971
23、reference and conditions of test Requirements GROUP A (To be applied on a sampling basis lot by lot) Subgroups A1, A3 and A4 are not applicable Non-destructive tests Subgroup A0 100% inspection Visual inspection Dimensions Eccentricity Material verification 1.2.2 1.2.3.1 1.2.3.2 1.2.5.2 (Excluding c
24、orner radii) at each end of waveguide length At each end As in1.2.2 of BS9220 As in Table 1 As in Table 1 Confirm that correct material from those listed under clause1 to4 in1.1.6.2 4) of BS9220 has been used Subgroup A2 Inspection level S-2, AQL 2.5% Dimensions Bow Twist Shape of cross section Inte
25、rnal finish 1.2.3.1 1.2.3.3 1.2.3.4 1.2.3.5 1.2.5.1 Corner radii only at each end Any600mm(2ft) of stock length Any300mm(1ft) run of stock length Accumulated twist per stock length May be assessed by measurement of manufacturers tool As in Table 1 Edgewise bow:0.25mm(0.01in) Flatwise bow:0.5mm(0.02i
26、n) May not exceed0.5 May not exceed3 As in 1.2.3.5 of BS9220 As in Table 2 Subgroup A5 CTR information Attributes information for subgroup A2 GROUPS B and C No tests requiredBS9220 N001:1971 4 BSI 04-2000 Inspection requirements Inspection BS9220:1971 reference and conditions of test Requirements GR
27、OUP D (To be applied on a sampling basis at three-yearly intervals) Subgroups D2, D3, D4 and D5 are not applicable Subgroup D1 tests Visual inspection a Bow a Twist a Dimensions Eccentricity Shape of cross section Internal finish a Material verification a 1.2.2 1.2.3.3 1.2.3.4 1.2.3.1 1.2.3.2 1.2.3.
28、5 1.2.5.1 1.2.5.2 Any600mm(2ft) of stock length Any300mm(1ft) run of stock length Accumulated twist per stock length (Including corner radii) at each end of waveguide length, and at intermediate points along the length At each end of the waveguide length and at intermediate points along the length A
29、t each end of waveguide length and at intermediate points along the length Destructive tests As in 1.2.2 of BS9220 Edgewise bow:0.25mm(0.01in) Flatwise bow:0.5mm(0.02in) May not exceed0.5 May not exceed3 As in Table 1 As in Table 1 As in 1.2.3.5 of BS9220 As in Table 2 Confirm that correct material
30、from those listed under classes1 to4 in1.1.6.2 4) of BS9220 has been used Subgroup D6 CTR Information Measurements information for all Group D tests a Measurements from Group A tests may be used.BS 9220 N001:1971 BSI 04-2000 5 Table 1A Dimensions for ordinary rectangular waveguide type R All dimensi
31、ons in millimetres 1 2 a 3 4 a 5 6 7 8 a 9 a 10 Wave- guide size Nominal frequency range GHz Inside cross section Nominal wall thickness Outside cross section Eccentricity Radius of corner Theoretical attenuation dB/m at1.5R cfor copper Peak power rating Preferred stock length Width Height Tolerance
32、 on width and height Width Height Tolerance on width and height Internal External From To max. min. max. MW 50 R5 R6 R8 R9 R12 R14 R18 R22 R26 R32 R40 R48 R58 R70 R84 R100 R120 R140 R180 R220 R260 R320 R400 R500 R620 R740 R900 R1200 R1400 R1800 R2200 R2600 0.41 0.49 0.64 0.76 0.96 1.14 1.45 1.72 2.1
33、7 2.60 3.22 3.94 4.64 5.38 6.58 8.20 9.84 11.9 14.5 17.6 21.7 26.4 33.0 39.3 49.9 60.5 73.8 92.3 114 145 172 217 0.62 0.75 0.98 1.15 1.46 1.73 2.20 2.61 3.30 3.95 4.90 5.99 7.05 8.18 10.0 12.5 15.0 18.0 22.0 26.7 33.0 40.1 50.1 59.7 75.8 92.0 112 140 173 220 261 330 457.2 381.0 292.10 247.65 195.58
34、165.10 129.54 109.22 86.36 72.14 58.17 47.55 40.39 34.85 28.499 22.860 19.050 15.799 12.954 10.668 8.636 7.112 5.690 4.775 3.759 3.099 2.540 2.032 1.651 1.295 1.092 0.864 228.60 190.50 146.05 123.82 97.79 82.55 64.77 54.61 43.18 34.04 29.083 22.149 20.193 15.799 12.624 10.160 9.525 7.899 6.477 4.318
35、 4.318 3.556 2.845 2.388 1.880 1.549 1.270 1.016 0.826 0.648 0.546 0.432 0.20 0.18 0.14 0.11 0.10 0.076 0.064 0.051 0.046 0.038 0.025 0.025 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020 b b b b 3.175 3.175 2.030 2.030 2.030 2.030 2.030 1.625 1.625 1.625 1.625 1.625 1.270 1.270 1.
36、015 1.015 1.015 1.015 1.015 1.015 1.015 1.015 1.015 1.015 0.762 0.762 0.762 0.762 0.762 254.00 201.93 169.16 133.60 113.28 90.42 76.20 61.42 50.80 43.64 38.10 31.75 25.40 21.59 17.83 14.99 12.70 10.67 9.14 7.72 6.81 5.79 5.13 4.57 3.556 3.175 2.819 2.616 2.388 130.17 104.14 86.61 68.83 58.67 47.42 3
37、8.10 32.33 25.40 23.44 19.05 15.88 12.70 12.06 9.93 8.51 6.35 6.35 5.59 4.88 4.42 3.91 3.58 3.30 2.540 2.350 2.172 2.070 1.956 0.20 0.20 0.15 0.13 0.10 0.076 0.076 0.051 0.051 0.051 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 b b b b 0.20 0.20 0.15 0.15 0.13 0.13 0.
38、10 0.10 0.076 0.076 0.064 0.064 0.064 0.064 0.064 0.064 0.051 0.051 0.051 0.051 0.051 0.051 0.051 b b b b b 1.5 1.5 1.5 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.0 0.8 0.8 0.8 0.8 0.8 0.8 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.2 0.15 0.15 0.15 b b b b 1.5 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 1.0 0.8 0.8 0.8 0.8 0.8 0.65 0.65
39、 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 b b b b b 2.0 2.0 2.0 2.0 2.0 1.5 1.5 1.5 1.5 1.4 1.4 1.3 1.15 1.0 1.0 0.9 0.9 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 b b b b b 0.0011 0.0015 0.0022 0.0028 0.0041 0.0052 0.0075 0.0097 0.014 0.019 0.025 0.036 0.043 0.058 0.079 0.11 0.13 0.1
40、8 0.24 0.37 0.44 0.58 0.81 1.1 1.5 2.0 2.7 3.8 5.2 7.5 9.7 13.8 103.0 71.8 45.9 31.9 18.9 13.5 8.29 5.90 3.80 2.43 1.60 1.04 0.806 0.544 0.355 0.229 0.178 0.123 0.083 0.048 0.037 0.025 0.016 0.010 0.007 0.005 0.003 0.002 4270 4270 4270 4270 3660 3660 3050 3050 3050 3050 3050 3050 3050 3050 2450 2440
41、 2440 1830 1830 1830 1830 1830 1830 b b b b NOTEThe millimetre dimensions are derived from the original inch dimensions. a Non-mandatory. b Under consideration.BS 9220 N001:1971 6 BSI 04-2000 Table 1B Dimensions for ordinary rectangular waveguide type R All dimensions in millimetres 1 2 a 3 4 a 5 6
42、7 8 a 9 10 Wave- guide size Nominal frequency range GHz Inside cross section Nominal wall thickness Outside cross section Eccentricity Radius of corner Theoretical attenuation dB/m at1.5R cfor copper Peak power rating Preferred stock length Width Height Deviation on width and height Width Height Dev
43、iation on width and height Internal External From To Max. Min. Max. MW 2 R5 R6 R8 R9 R12 R14 R18 R22 R26 R32 R40 R48 R58 R70 R84 R100 R120 R140 R180 R220 R260 R320 R400 R500 R620 R740 R900 R1200 R1400 R1800 R2200 R2600 0.41 0.49 0.64 0.76 0.96 1.14 1.45 1.72 2.17 2.60 3.22 3.94 4.64 5.38 6.58 8.20 9
44、.84 11.9 14.5 17.6 21.7 26.4 33.0 39.3 49.9 60.5 73.8 92.3 114 145 172 217 0.62 0.75 0.98 1.15 1.46 1.73 2.20 2.61 3.30 3.95 4.90 5.99 7.05 8.18 10.0 12.5 15.0 18.0 22.0 26.7 33.0 40.1 50.1 59.7 75.8 92.0 112 140 173 220 261 330 18.000 15.000 11.500 9.750 7.700 6.500 5.100 4.300 3.400 2.840 2.290 1.
45、872 1.590 1.372 1.122 0.900 0.750 0.622 0.510 0.420 0.340 0.280 0.224 0.188 0.148 0.122 0.100 0.080 0.065 0.051 0.043 0.034 9.000 7.500 5.750 4.875 3.850 3.250 2.550 2.150 1.700 1.340 1.145 0.872 0.795 0.622 0.497 0.400 0.375 0.311 0.255 0.170 0.170 0.140 0.112 0.094 0.074 0.061 0.050 0.040 0.0325 0
46、.0255 0.0215 0.0170 0.008 0.007 0.0055 0.0045 0.0040 0.0030 0.0025 0.0020 0.0018 0.0015 0.0010 0.0010 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 b b b b 0.125 0.125 0.080 0.080 0.080 0.080 0.080 0.064 0.064 0.064 0.064 0.064 0.050 0.050 0.040 0.040 0.040 0.040 0.040
47、 0.040 0.040 0.040 0.040 0.040 0.030 0.030 0.030 0.030 0.030 10.000 7.950 6.660 5.260 4.460 3.560 3.000 2.418 2.000 1.718 1.500 1.250 1.000 0.850 0.702 0.590 0.500 0.420 0.360 0.304 0.268 0.228 0.202 0.180 0.140 0.125 0.111 0.103 0.094 5.125 4.100 3.410 2.710 2.310 1.860 1.500 1.273 1.000 0.923 0.75
48、0 0.625 0.500 0.475 0.391 0.335 0.250 0.250 0.220 0.192 0.174 0.154 0.141 0.130 0.100 0.0925 0.0855 0.0815 0.0770 0.008 0.008 0.006 0.005 0.004 0.003 0.003 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 b b b b b 0.008 0.008 0.006 0.006 0.005 0.005 0.
49、004 0.004 0.003 0.003 0.0025 0.0025 0.0025 0.0025 0.0025 0.0025 0.002 0.002 0.002 0.002 0.002 0.002 0.002 b b b b b 0.06 0.06 0.06 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.016 0.016 0.016 0.016 0.016 0.016 0.012 0.008 0.006 0.006 0.006 b b b b 0.06 0.06 0.06 0.06 0.06 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.025 0.025 0.020 0.020 0.020 0.020 0.020 0.0
