N16 执行器 标准查询与下载

JB/T 7368-1994 工业过程控制系统用阀门定位器

本标规定了工业过程控制系统用阀门定位器的产品分类、技术要求、试验方法、检验规则等。 本标准适用于与气动薄膜执行机构或气动活塞执行机构配套使用的气动和电动模拟输入信号的定位器。

Valve positioners for use in industrial-process control system

JB/T 7387-1994 工业过程控制系统用电动控制阀

本标准规定了工业过程控制系统用电动控制阀(也称电动调节阀)的产品分类、技术要求、试验方法、检验规则、标志、包装和贮存。 本标准适用于符合GB11922所规定的电动执行机构与阀组成的各类电动控制阀。与此相配的伺服放大器、操作器也应符合GB11922中的规定。

Electrically operated valves for use in industrial-process control system

IEC 60534-8-4:1994 工业过程控制阀 第8部分:噪声问题 第4节 液动流产生的噪声的预测

Industrial-process control valves - Part 8: Noise considerations - Section 4: Prediction of noise generated by hydrodynamic flow

NF C46-504:1993 工业过程控制阀.第2部分:流量.第2节:在安装条件下可压缩流动方程的参数选择

INDUSTRIAL-PROCESS CONTROL VALVES. PART 2 : FLOW CAPACITY. SECTION TWO : SIZING EQUATIONS FOR COMPRESSIBLE FLUID FLOW UNDER INSTALLED CONDITIONS. (EUROPEAN STANDARD EN 60 534-2-2).

BS EN 60534-8-2:1993 工业过程控制阀.噪声的考虑.流动液流经控制阀产生噪声的实验室测量

This section of IEC 534-8 includes the method for measuring the sound pressure level due to liquid flow through a control valve and the method 'for determining the characteristic increase of noise due to the onset of cavitation. It also defines the equlpment, methods and procedures for the laboratory measurement of the airborne sound needed to determine these characteristics. The airborne sound includes that radiated from the control valve and the associated piping configuration, íncluding fixed flow restrictions through which the test fluid (water) is passing (see note i). The primary purpose of this section of IEC 534-8 is to provide a method for determining the characteristic increase of noise due to cavitation, including a method for measuring noise generated in control valves by hydrodynamic flow. Methods of measuring the noise radiated from the valve and associated test piping allows a comparison of various measured data which is beneficial to the user and the manufacturer. The noise to be measured takes into account the noise radiated from the control valve itself and the noise generated by the valve but radiated from the associated piping system. The test data are expressed as sound pressure levels of the valve under consideration using water as the test fluid. Determination of sound power levels is beyond the scope of this section of IEC 534-8. The nolse characteristics are useful for the following reasons: a) to determine the characteristic pressure ratio factor xFz of a control valve; b) to predict valve noise for given process conditions; c) to compare the performance of different valves; d) to plan measures for increasing senrice life and noise abatement.

Industrial-process control valves - Noise considerations - Laboratory measurement of noise generated by hydrodynamic flow through control valves

JB/T 5223-1991 工业过程控制系统用气动长行程执行机构

　　本标准规定了工业过程控制系统用气动长行程执行机构的产品分类、技术要求、试验方法、检验规则、标志、包装和贮存。 　　本标准适用于由长行程气缸、支架和阀门定位器等组成的气动长行程执行机构。

Pneumatic long stroke actuator for industrial process control system

IEC 60770:1984 工业过程控制系统用发送器性能的评定方法

Methods of evaluating the performance of transmitters for use in industrial-process control systems