{"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":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword
Endorsement notice <\/td>\n<\/tr>\n
6<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
7<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
11<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
12<\/td>\n1 Scope <\/td>\n<\/tr>\n
13<\/td>\n2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
19<\/td>\nFigures
Figure 1 \u2013 Relationship between indication range and measuring range <\/td>\n<\/tr>\n
20<\/td>\nFigure 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>\n4 General requirements
4.1 Overview
Figure 4 \u2013 Example of zero uncertainty <\/td>\n<\/tr>\n
22<\/td>\n4.2 Design
4.2.1 General
4.2.2 Indicating devices <\/td>\n<\/tr>\n
24<\/td>\n4.2.3 Alarm signal
4.2.4 Fault signals <\/td>\n<\/tr>\n
25<\/td>\n4.2.5 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>\n4.2.8 Separate gas detection control units for use with gas detection transmitter(s)
4.2.9 Software-controlled equipment <\/td>\n<\/tr>\n
27<\/td>\n4.3 Labelling and marking <\/td>\n<\/tr>\n
28<\/td>\n4.4 Instruction manual <\/td>\n<\/tr>\n
30<\/td>\n5 Test methods
5.1 General <\/td>\n<\/tr>\n
31<\/td>\n5.2 General requirements for tests
5.2.1 Samples and sequence of tests <\/td>\n<\/tr>\n
32<\/td>\n5.2.2 Preparation of equipment before each test <\/td>\n<\/tr>\n
33<\/td>\n5.2.3 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>\n5.3.4 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>\n5.3.11 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>\n5.4.3 Measurement of deviations
5.4.4 Mechanical tests <\/td>\n<\/tr>\n
38<\/td>\n5.4.5 Environmental tests <\/td>\n<\/tr>\n
41<\/td>\n5.4.6 Performance tests <\/td>\n<\/tr>\n
46<\/td>\n5.4.7 Electrical tests <\/td>\n<\/tr>\n
49<\/td>\n5.4.8 Stability <\/td>\n<\/tr>\n
50<\/td>\n5.4.9 Fault signal tests <\/td>\n<\/tr>\n
51<\/td>\n5.4.10 Software controlled equipment
5.4.11 Protection against water <\/td>\n<\/tr>\n
52<\/td>\n6 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>\n6.2.2 Sources of uncertainty
Table 1 \u2013 Factors to be considered in the expanded uncertainty estimate <\/td>\n<\/tr>\n
58<\/td>\n6.2.3 Calculation of relative expanded uncertainty <\/td>\n<\/tr>\n
59<\/td>\n6.3 Method of calculation of lower limit of measurement <\/td>\n<\/tr>\n
60<\/td>\n6.4 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>\nAnnex A (normative)Gas specific performance requirements
Table A.1 \u2013 Gas specific performance requirements <\/td>\n<\/tr>\n
62<\/td>\nAnnex 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>\nB.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>\nFigure 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>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Workplace atmospheres – Gas detectors. Performance requirements of detectors for toxic gases<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":431044,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[551,2641],"product_tag":[],"class_list":{"0":"post-431037","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-260-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/431037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/431044"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=431037"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=431037"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=431037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}