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BS EN 45501:2015

BS EN 45501:2015

$215.11

Metrological aspects of non-automatic weighing instruments

Published By Publication Date Number of Pages
BSI 2015 146
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This European Standard specifies the metrological and technical requirements for non-automatic weighing instruments.

It is intended to provide standardized requirements and testing procedures to evaluate the metrological and technical characteristics in a uniform and traceable way.

PDF Catalog

PDF Pages PDF Title
9 Terminology
T.1 General definitions
11 T.2 Construction of an instrument
17 T.3 Metrological characteristics of an instrument
18 T.4 Metrological properties of an instrument
19 T.5 Indications and errors
24 T.6 Influences and reference conditions
T.7 Performance test
T.8 Index of terms defined
26 T.9 Abbreviations and symbols
29 1 Scope
2 Principles of the European Standard
2.1 Units of measurement
2.2 Principles of the metrological requirements
2.3 Principles of the technical requirements
30 2.4 Application of requirements
2.5 Terminology
3 Metrological requirements
3.1 Principles of classification
3.2 Classification of instruments
31 3.3 Additional requirements for multi-interval instruments
32 3.4 Auxiliary indicating devices
34 3.5 Maximum permissible errors
35 3.6 Permissible differences between results
3.7 Test standards
36 3.8 Discrimination
3.9 Variations due to influence quantities and time
40 3.10 Type evaluation tests and examinations
45 4 Technical requirements for self- or semi-self-indicating instruments
4.1 General construction requirements
47 4.2 Indication of weighing results
48 4.3 Analog indicating device
50 4.4 Digital indicating devices
51 4.5 Zero-setting and zero-tracking devices
53 4.6 Tare devices
56 4.7 Preset tare devices
57 4.8 Locking positions
4.9 Auxiliary verification devices (removable or fixed)
4.10 Selection of weighing ranges on a multiple range instrument
58 4.11 Devices for selection (or switching) between various load receptors and/or load transmitting devices and various load measuring devices
4.12 “Plus and minus” comparator instruments
4.13 Instruments for direct sales to the public
60 4.14 Additional requirements for price-computing instruments for directsales to the public
62 4.15 Instruments similar to those normally used for direct sales to the public
4.16 Price-labeling instruments
4.17 Mechanical counting instruments with unit-weight receptor
63 4.18 Additional technical requirements for mobile instruments (see also 3.9.1.1)
64 4.19 Portable instruments for weighing road vehicles
4.20 Modes of operation
65 5 Technical requirements for electronic instruments
5.1 General requirements
5.2 Acting upon significant faults
5.3 Functional requirements
66 5.4 Performance and span stability tests
67 5.5 Additional requirements for software-controlled electronic devices
73 6 Technical requirements for non-self-indicating instruments
6.1 Minimum sensitivity
6.2 Acceptable solutions for indicating devices
74 6.3 Conditions of construction
75 6.4 Simple equal arm beam
6.5 Simple 1/10 ratio beam
76 6.6 Simple sliding poise instruments (steelyards)
77 6.7 Roberval and Béranger instruments
6.8 Instruments with ratio platforms
78 6.9 Instruments with a load-measuring device having accessible sliding poises(of the steelyard type)
79 7 Marking of instruments and modules
7.1 Descriptive Markings
82 7.2 Other marks
83 8 Metrological controls
8.1 Liability to metrological controls
8.2 Type approval
8.3 Verification of conformity to type
85 A.1 Administrative examination
A.2 Compare construction with documentation
A.3 Initial examination
A.4 Performance tests
94 A.5 Influence factors
97 A.6 Endurance test (3.9.4.3)
99 B.1 General requirements for electronic instruments under test
B.2 Damp heat, steady state
B.3 Performance tests for disturbances
106 B.4 Span stability test
108 C.1 Applicable requirements
109 C.2 General principles of testing
113 C.3 Tests
116 C.4 Test Record
118 D.1 Applicable requirements
119 D.2 General principles of testing
D.3 Tests
120 D.4 Test record
121 E.1 Applicable requirements
122 E.2 General principles of testing
E.3 Tests
E.4 Test Record
124 F.1 Weighing instruments
125 F.2 Separately tested load cells
126 F.3 Separately tested indicators and analog data processing devices
128 F.4 Compatibility checks for modules with analog output
130 F.5 Compatibility checks for modules with digital output
F.6 Examples of compatibility checks for modules with analog output
135 G.1 Devices and instruments with embedded software (5.5.1)
G.2 Personal computers and other devices with programmable or loadable software (5.5.2)
136 G.3 Data storage devices (5.5.3)
137 G.4 Test record content

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BS EN 45501:2015
$215.11