{"id":431037,"date":"2024-10-20T07:26:00","date_gmt":"2024-10-20T07:26:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-62990-12022a112022\/"},"modified":"2024-10-26T14:07:54","modified_gmt":"2024-10-26T14:07:54","slug":"bs-en-iec-62990-12022a112022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-62990-12022a112022\/","title":{"rendered":"BS EN IEC 62990-1:2022+A11:2022"},"content":{"rendered":"
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2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
4<\/td>\n | European foreword Endorsement notice <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 1 Scope <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | Figures Figure 1 \u2013 Relationship between indication range and measuring range <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | Figure 2 \u2013 Warm-up time in clean air (typical) Figure 3 \u2013 Warm-up time in standard test gas (typical) <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | 4 General requirements 4.1 Overview Figure 4 \u2013 Example of zero uncertainty <\/td>\n<\/tr>\n | ||||||
22<\/td>\n | 4.2 Design 4.2.1 General 4.2.2 Indicating devices <\/td>\n<\/tr>\n | ||||||
24<\/td>\n | 4.2.3 Alarm signal 4.2.4 Fault signals <\/td>\n<\/tr>\n | ||||||
25<\/td>\n | 4.2.5 Adjustments 4.2.6 Battery-powered equipment 4.2.7 Gas detection transmitter for use with separate gas detection control units <\/td>\n<\/tr>\n | ||||||
26<\/td>\n | 4.2.8 Separate gas detection control units for use with gas detection transmitter(s) 4.2.9 Software-controlled equipment <\/td>\n<\/tr>\n | ||||||
27<\/td>\n | 4.3 Labelling and marking <\/td>\n<\/tr>\n | ||||||
28<\/td>\n | 4.4 Instruction manual <\/td>\n<\/tr>\n | ||||||
30<\/td>\n | 5 Test methods 5.1 General <\/td>\n<\/tr>\n | ||||||
31<\/td>\n | 5.2 General requirements for tests 5.2.1 Samples and sequence of tests <\/td>\n<\/tr>\n | ||||||
32<\/td>\n | 5.2.2 Preparation of equipment before each test <\/td>\n<\/tr>\n | ||||||
33<\/td>\n | 5.2.3 Mask for calibration and test 5.3 Normal conditions for test 5.3.1 General 5.3.2 Test gas(es) 5.3.3 Flow rate for test gases <\/td>\n<\/tr>\n | ||||||
34<\/td>\n | 5.3.4 Power supply 5.3.5 Temperature 5.3.6 Pressure 5.3.7 Humidity 5.3.8 Acclimation time 5.3.9 Orientation 5.3.10 Communications options <\/td>\n<\/tr>\n | ||||||
35<\/td>\n | 5.3.11 Gas detection equipment as part of systems 5.4 Tests 5.4.1 General 5.4.2 Unpowered storage <\/td>\n<\/tr>\n | ||||||
36<\/td>\n | 5.4.3 Measurement of deviations 5.4.4 Mechanical tests <\/td>\n<\/tr>\n | ||||||
38<\/td>\n | 5.4.5 Environmental tests <\/td>\n<\/tr>\n | ||||||
41<\/td>\n | 5.4.6 Performance tests <\/td>\n<\/tr>\n | ||||||
46<\/td>\n | 5.4.7 Electrical tests <\/td>\n<\/tr>\n | ||||||
49<\/td>\n | 5.4.8 Stability <\/td>\n<\/tr>\n | ||||||
50<\/td>\n | 5.4.9 Fault signal tests <\/td>\n<\/tr>\n | ||||||
51<\/td>\n | 5.4.10 Software controlled equipment 5.4.11 Protection against water <\/td>\n<\/tr>\n | ||||||
52<\/td>\n | 6 Uncertainty of measurement and lower limit of measurement for type HM equipment 6.1 General 6.2 Method of calculation of uncertainty of measurement 6.2.1 Basic concept <\/td>\n<\/tr>\n | ||||||
53<\/td>\n | 6.2.2 Sources of uncertainty Table 1 \u2013 Factors to be considered in the expanded uncertainty estimate <\/td>\n<\/tr>\n | ||||||
58<\/td>\n | 6.2.3 Calculation of relative expanded uncertainty <\/td>\n<\/tr>\n | ||||||
59<\/td>\n | 6.3 Method of calculation of lower limit of measurement <\/td>\n<\/tr>\n | ||||||
60<\/td>\n | 6.4 Acceptance criteria 6.4.1 Uncertainty of measurement 6.4.2 Lower limit of measurement 6.5 Relation between uncertainty and accuracy <\/td>\n<\/tr>\n | ||||||
61<\/td>\n | Annex A (normative)Gas specific performance requirements Table A.1 \u2013 Gas specific performance requirements <\/td>\n<\/tr>\n | ||||||
62<\/td>\n | Annex B (informative)Determination of time of response and time of recovery B.1 Aspirated equipment B.1.1 Test rig B.1.2 Equipment without internal pump B.1.3 Equipment with internal pump <\/td>\n<\/tr>\n | ||||||
63<\/td>\n | B.2 Equipment that samples by diffusion B.2.1 Calibration mask method B.2.2 Diffusion or flow methods Figure B.1 \u2013 Schematic example of test rig for use with aspirated equipment <\/td>\n<\/tr>\n | ||||||
64<\/td>\n | Figure B.2 \u2013 Schematic example of test chamber for diffusion method Figure B.3 \u2013 Schematic example of test chamber for flow method <\/td>\n<\/tr>\n | ||||||
65<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Workplace atmospheres – Gas detectors. Performance requirements of detectors for toxic gases<\/b><\/p>\n |