ISO 22554:2023
Ships and marine technology — Propeller shaft revolution indicators — Electric type and electronic type
This document specifies the construction, performance requirements, methods of testing, and required test results for electric and electronic propeller shaft revolution indicators (hereinafter referred to as “indicator system”). The requirements in this document are based on those contained in the International Convention for the Safety of Life at Sea (SOLAS) 1974 (as amended, 2000), Clause 2.5.4, Regulation 19, chapter V.
This document is intended to be used in conjunction with IMO Resolution A.694 (17) and IEC 60945.
NOTE A propeller shaft revolution indicator can be designed so that it also complies with the requirements for a tachometer for the engine of a ship.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Construction of an indicator system
4.1 Indicator system
4.2 Transmitters
4.2.1 General
4.2.2 Electric type
4.2.3 Electronic type
4.3 Indicator
4.4 Alert
5 Performance requirements
5.1 General
5.2 Balance
5.3 Friction error
5.4 Calibration accuracy
5.5 Damping
5.6 Zero point
5.7 Output electric signal of a signal converter
5.8 Output electric signal accuracy of a signal converter
5.8.1 General
5.8.2 Accuracy
5.8.3 Response speed
5.9 Power supply fluctuations
5.10 Insulation resistance and high voltage
6 Methods of testing and required test results
6.1 Test items and sequence
6.2 Construction
6.3 Safety, EMC and environmental tests
6.4 Balance test
6.5 Friction test
6.6 Calibration accuracy test
6.7 Damping test
6.8 Zero-point test
6.9 Signal converter output electric signal test
6.10 Signal converter output electric signal accuracy test
6.11 Power supply fluctuation test
6.12 Alert test
7 Interface
8 Marking
9 Information
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Construction of an indicator system
4.1 Indicator system
4.2 Transmitters
4.2.1 General
4.2.2 Electric type
4.2.3 Electronic type
4.3 Indicator
4.4 Alert
5 Performance requirements
5.1 General
5.2 Balance
5.3 Friction error
5.4 Calibration accuracy
5.5 Damping
5.6 Zero point
5.7 Output electric signal of a signal converter
5.8 Output electric signal accuracy of a signal converter
5.8.1 General
5.8.2 Accuracy
5.8.3 Response speed
5.9 Power supply fluctuations
5.10 Insulation resistance and high voltage
6 Methods of testing and required test results
6.1 Test items and sequence
6.2 Construction
6.3 Safety, EMC and environmental tests
6.4 Balance test
6.5 Friction test
6.6 Calibration accuracy test
6.7 Damping test
6.8 Zero-point test
6.9 Signal converter output electric signal test
6.10 Signal converter output electric signal accuracy test
6.11 Power supply fluctuation test
6.12 Alert test
7 Interface
8 Marking
9 Information
Bibliography