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BS EN 17075:2018+A1:2023

$215.11

Water quality. General requirements and performance test procedures for water monitoring equipment. Measuring devices

Published By Publication Date Number of Pages
BSI 2023 72
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This European Standard specifies general requirements and performance test procedures for portable and fixed position measuring devices (MDs) that are used in an in-line or online operating position to measure physical and chemical determinands in water. It excludes at-line devices, such as chemical test kits, and off-line devices, such as laboratory analysers. The general requirements include functional facilities that MDs need to meet users’ applications and information that need to be included in associated documents. The test procedures specify uniform methods to be used when determining key performance characteristics of MDs. The performance tests comprise testing carried out under laboratory and field conditions. Statistical procedures are defined for evaluation of the test data. It is recognized that for some devices certain test procedures are not applicable. Example values for performance characteristics for a selection of MDs for monitoring waste water effluents and receiving waters are detailed in Annex A for guidance. This European Standard requires the manufacturer of a MD to provide more technical data for verification than does EN ISO 15839:2006 [5]. Consequently, EN ISO 15839 will be of greater assistance to manufacturers wishing to characterize a new device whereas this European Standard is more focussed on user requirements for the verification of manufacturer’s claims.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
14 4 Symbols
5 Principles
15 6 General requirements
6.1 Requirements for !CMDs”
16 6.2 Requirements for !CMDs” associated documents
17 7 Performance characteristics
7.1 Performance characteristics determined by laboratory testing
18 7.2 Performance characteristics determined by field testing
19 8 Performance testing
8.1 Quality requirements for testing
20 8.2 General requirements for testing
21 8.3 Test conditions
22 8.4 Reporting
9 Laboratory test procedures
9.1 Guidance for establishing a test plan
23 9.2 Verification by inspection
24 9.3 Performance tests
9.3.1 Response time
27 9.3.2 Bias, linearity, repeatability and LOQ
9.3.3 Interference effects
9.3.3.1 General
9.3.3.2 Substance interference tests
28 9.3.3.3 Salinity compensation for dissolved oxygen !CMDs”
30 9.3.3.4 Incident light test
31 9.3.4 Ambient temperature and relative humidity
32 9.3.5 Sample temperature
33 9.3.6 Sample flow-rate
9.3.7 Sample pressure
9.3.8 Output impedance
34 9.3.9 Supply voltage
9.3.9.1 General
9.3.9.2 Mains powered !FCMDs”
9.3.9.3 DC powered !CMDs”
9.3.9.4 Battery powered !CMDs”
35 9.3.10 7-day drift
9.3.11 Loss of power
36 9.3.12 Warm-up drift
10 Field test procedures
10.1 Objective of field test
37 10.2 Planning for the field test
39 10.3 Error under field test conditions
10.4 Response time
40 10.5 Variation in sensitivity
41 10.6 Maintenance
10.7 Up-time
43 Annex A (informative)Example values for performance characteristics for a selection of !CMDs” for monitoring waste water effluents and receiving waters
48 Annex B (normative)Evaluation of performance test data
B.1 Introduction
B.2 Bias
49 B.3 Repeatability
B.4 Linearity
50 B.5 Estimation of LOQ
B.6 7 Day drift (test 9.3.10)
B.7 Effect of influence conditions (tests 9.3.3.2 to 9.3.9.4)
52 B.8 Combined performance characteristic measurement uncertainty
54 Annex C (informative)Example calculations
C.1 General
C.2 Worked example – Laboratory tests
C.2.1 Bias, repeatability, linearity and LOQ
C.2.1.1 General
C.2.1.2 Bias
56 C.2.1.3 Repeatability
57 C.2.1.4 Linearity
C.2.1.5 Limit of Quantification
58 C.2.2 Influence conditions
60 C.2.3 Calculation of combined performance characteristic measurement uncertainty
61 C.3 Worked example — Field tests
63 Annex D (informative)Uncertainty of the reference quantity and error calculations
65 Annex E (informative)Example test report
BS EN 17075:2018+A1:2023
$215.11