IEC 61514:2000 pdf download.Industrial-process control systems – Methods of evaluating the performance of valve positioners with pneumatic outputs
1 Scope and object
This International Standard specifies tests designed to determine the static and dynamic performance of single-acting or double-acting positioners. The tests may be applied to positioners which receive standard analogue input signals (as specified in IEC 60381 and IEC 60382) and have a pneumatic output. NOTE For positioners with pulsed or digital input signals, equivalent criteria may be applied. The methods described may not fully apply to positioners with digital controllers or positioners with pulsed outputs. Testing may be conducted either on a positioner alone, independently of an actuator, or on a positioner mounted and connected to a specific actuator, as a combined unit. The text makes clear where different approaches are required. The methods of evaluation given in this standard are intended for use by manufacturers to determine the performance of their products, and by users, or independent testing establish- ments, to verify manufacturers’ performance specifications. The closest liaison should be maintained between the evaluating body and the manufacturer. Note should be taken of the manufacturer’s specifications for the instrument when the test programme is being decided, and the manufacturer should be invited to comment on both the test programme and the results. His comments on the results should be included in any report produced by the testing organization.This standard is intended to provide definitions of positioner elements, actions, and characteristics, to specify uniform methods of measuring performance errors and effects of influence quantities on those characteristics, and to describe methods of reporting and evaluating the results of the measurement data obtained. The test conditions described in this publication (for example range of ambient temperatures and power supply) relate to conditions which commonly arise in use. Consequently, the values specified shall be used where no other values are specified by the manufacturer or user. If other values are used, they should be stated. It is recognized that the manufacturer’s specifications and instructions for installation and operation should apply during all steps. The tests specified in this standard are not necessarily sufficient for instruments specifically designed for unusually arduous conditions. Conversely, a reduced series of tests may serve adequately for instruments designed to perform within a more limited range of conditions. When a full evaluation, in accordance with this standard, is not required or possible, those tests which are required should be performed and the results reported in accordance with the relevant parts of this standard. In such cases, the test report should state that it does not cover the full number of tests specified herein.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of IEC 61 51 4. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on IEC 61 51 4 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards.
IEC 60050(1 61 ):1 990, International Electrotechnical Vocabulary (IEV) – Chapter 1 61 : Electro-
magnetic compatibility
IEC 60068-2-1 :1 990, Environmental testing – Part 2: Tests. Test A: Cold
IEC 60068-2-2:1 974, Environmental testing – Part 2: Tests. Test B: Dry heat
IEC 60068-2-6:1 995, Environmental testing – Part 2: Tests. Test Fc: Vibration (sinusoidal)
IEC 60068-2-31 :1 969, Environmental testing – Part 2: Tests. Test Ec: Drop and topple,primarily for equipment-type specimens
IEC 60068-2-56:1 988, Environmental testing – Part 2: Tests. Test Cb: Damp heat, steady state, primarily for equipment
IEC 60381 -1 :1 982, Analogue signals for process control systems – Part 1 : Direct current signals
IEC 60382:1 991 , Analogue pneumatic signal for process control systems
IEC 60529:1 989, Degree of protection provided by enclosures (IP Code)
IEC 60902:1 987, Industrial-process measurement and control – Terms and definitions
IEC 61514:2000 pdf download
