{"id":293075,"date":"2024-10-19T19:54:39","date_gmt":"2024-10-19T19:54:39","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-1434-11997\/"},"modified":"2024-10-25T17:04:14","modified_gmt":"2024-10-25T17:04:14","slug":"bs-en-1434-11997","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-1434-11997\/","title":{"rendered":"BS EN 1434-1:1997"},"content":{"rendered":"

Electrical safety requirements are not covered by this standard.<\/p>\n

PDF Catalog<\/h4>\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
1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nCommittees responsible for this British Standard <\/td>\n<\/tr>\n
3<\/td>\nContents <\/td>\n<\/tr>\n
6<\/td>\nForeword
Foreword to amendment A1
Contents <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Types of instrument
3.1 Complete instrument
3.2 Combined instrument
3.3 Hybrid instrument (often called a \u201ccompact\u201d instrument)
3.4 Sub-assemblies of a heat meter, which is a combined instrument <\/td>\n<\/tr>\n
8<\/td>\n3.5 Equipment under test (EUT)
4 Definitions and symbols
4.1 response time,
4.2 fast response meter
4.3 rated voltage,
4.4 rated operating conditions
4.5 reference conditions
4.6 influence quantity
4.7 influence factors
4.8 disturbance
4.9 Types of error
4.9.1 error (of indication)
4.9.2 intrinsic error
4.9.2 initial intrinsic error
4.9.3 durability error <\/td>\n<\/tr>\n
9<\/td>\n4.9.4 maximum permissible error; MPE
4.10 Types of fault
fault
transitory fault
significant fault
4.11 reference values of the measurand, RVM
4.12 conventional true value
4.13 meter model
4.14 electronic device
4.15 electronic element
4.16 minimum immersion depth of a temperature sensor
4.17 self-heating effect
4.18 cooling meter <\/td>\n<\/tr>\n
10<\/td>\n4.19 flow direction
4.20 electrical pulse
4.21 pulse output and input device
4.22 maximum admissible temperature
4.23 long life flow sensor
5 Rated operating conditions
5.1 Limits of temperature range
5.2 Limits of temperature differences
5.3 Limits of flow-rate <\/td>\n<\/tr>\n
11<\/td>\n5.4 Limits of thermal power
5.5 Maximum admissible working pressure, MAP
5.6 Maximum pressure loss
6 Technical characteristics
6.1 Materials and construction
6.2 Requirements outside the limiting values of the flow rate
6.3 Display <\/td>\n<\/tr>\n
12<\/td>\n6.4 Protection against fraud
6.5 Mains voltage
Table 1 Standardized levels for external powering
7 Specified working range
7.1 Temperature difference <\/td>\n<\/tr>\n
13<\/td>\n7.2 Flow rate
8 Heat transmission formula
9 Metrological characteristics (maximum permissible errors, MPE)
9.1 General <\/td>\n<\/tr>\n
14<\/td>\n9.2 Values of maximum permissible errors
9.3 Application of maximum permissible errors <\/td>\n<\/tr>\n
15<\/td>\n10 Environmental classification
10.1 Environmental class A (domestic use, indoor installations)
10.2 Environmental class B (domestic use, outdoor installations)
10.3 Environmental class C (industrial installations)
11 Heat meter specification
11.1 Flow sensor <\/td>\n<\/tr>\n
16<\/td>\n11.2 Temperature sensor pair
11.3 Calculator <\/td>\n<\/tr>\n
17<\/td>\n11.4 Complete meters <\/td>\n<\/tr>\n
18<\/td>\n12 Information to be delivered with the heat meters or sub-assemblies <\/td>\n<\/tr>\n
19<\/td>\nAnnex A (normative) Heat coefficient equations
(normative) Heat coefficient equations <\/td>\n<\/tr>\n
20<\/td>\nTable TA.1 Coefficients and exponents of Eqs. (A.3) and (A.5)
Annex B deleted
!
Annex C deleted
! <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Heat meters – General requirements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2003<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":293079,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[280,2641],"product_tag":[],"class_list":{"0":"post-293075","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-200-10","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\/293075","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\/293079"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=293075"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=293075"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=293075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}