(PV6800)进口喷嘴挡板式智能定位器 产品控制原理 Product control principle

喷嘴挡板式智能定位器接受到4-20mA指令，通过A/D 转化后传送给微处理器，微处理器把输入信号和实际位置信号对比后，经过先进算法计算其偏差，依据偏差大小和方向输出一个带方向的电流信号给喷嘴挡板 IP放大器，进而调节进入执行机构气室的空气流量，实现阀门的开度控制，当阀位信号达到目标位置时，偏差为 0，定位器输出气路关闭。此时，阀位固定在当前阀位位置，直到偏差再次出现。

The positioner receives the 4-20 mA command, transmits it to the microprocessor through A/D conversion, and the microprocessor compares the input signal with the actual position signal, calculates the deviation by an advanced algorithm, and outputs a band direction according to the magnitude and direction of the deviation. The current signal is supplied to the nozzle baffle IP amplifier, thereby adjusting the air flow entering the actuator air chamber to realize the opening degree control of the valve. When the valve position signal reaches the target position, the deviation is 0, and the positioner output gas path is closed. At this point, the valve position is fixed at the current valve position until the deviation appears again.

安装要求 Installation requirements

环境温度: -30-85℃、-30-70℃(T4)  Ambient temperature: -30-85 ℃, -30-70 ℃ (T4)

相对湿度： 10%-90%  Relative humidity: 10%-90%

安装处温度和湿度无剧烈变化  There is no drastic change in temperature and humidity at the installation site

振动：小于 20g （15—150Hz），10g（150—2000Hz）Vibration: less than 20g (15-150hz), 10g (150-2000hz)

喷嘴挡板式智能定位器功能特点 Features

1.采用喷嘴挡板 3/3 滑阀技术，提高了现场抗粉尘、水分、油污的能力，降低了对压缩空气的质量要求；The nozzle baffle 3/3 slide valve technology improves the ability of the site to resist dust, moisture and oil, and reduces the quality requirements for compressed air;

2.内置键盘和液晶屏，方便用户现场调试、查询定位器的工作状态 Built-in keyboard and LCD screen, convenient for users to debug and query the working status of the positioner

3.一键自整定，傻瓜式操作，3 分钟内轻松搞定复杂调试过程 One-button self-tuning, fool-like operation, easy to get complicated debugging process in 3 minutes;

4.独特在线置换功能，解决了生产现场不停产更换定位器的难题；Unique online replacement function solves the problem of not replacing the positioner at the production site;

5.内置独特三断保位（故障闭锁）功能，节省用户需外接电磁阀和

6.失电比较器来实现该功能带来的额外投资；Built-in unique three-break protection (fault lockout) function, saving users the need for external solenoid valve and power loss comparator to achieve additional investment in this function;

7.阀位输出和 HART 功能模块化设计，方便用户选择 Valve position output and HART function modular design,convenient for users to choose;

8.耗气量小，是电气阀门定位器的 1/10，节省工厂能源。Low air consumption, which is 1/10 of the electric valve positioner, saving factory energy.

技术参数 Technical Parameters

性能对比 Performance comparison

应用场合 Application Scenario