型號(hào)描述
型號(hào) 8718 是一臺(tái)用于在工藝技術(shù)領(lǐng)域內(nèi)調(diào)節(jié)液體流量的裝置。傳感器發(fā)送的實(shí)際值將在數(shù)字的電子調(diào)節(jié)設(shè)備中與標(biāo)準(zhǔn)信號(hào)所規(guī)定的額定值比較；存在調(diào)節(jié)偏差時(shí)，會(huì)通過一種 PI 調(diào)節(jié)算法對(duì)發(fā)送到比例閥上的調(diào)節(jié)參數(shù)進(jìn)行修改。這樣一來，就可以將流量保持在一個(gè)確定的數(shù)值上，或使其遵循規(guī)定的曲線輪廓，而不會(huì)受到壓力波動(dòng)或設(shè)備中其他變化的影響。一個(gè)無摩擦工作的比例閥作為調(diào)節(jié)元件，確保了高反應(yīng)靈敏度和裝置良好的調(diào)節(jié)特性。
1）通過快速的流量測(cè)量實(shí)現(xiàn)高動(dòng)態(tài)調(diào)節(jié)
2）適合計(jì)量為 600 ml/min (36 l/h) 的液體量
3）介質(zhì)里無移動(dòng)部件
4）可選的現(xiàn)場(chǎng)總線
5）緊湊型結(jié)構(gòu)
Type Description
Type 8718 is an instrument for liquid flow control in process technology. The measured value provided by the sensor will be compared in the digital control electronics with the predefined set point according to the signal; if a control difference is present, the control value output to the proportional valve will be modified using a PI-control algorithm. In this way, the flow can be maintained at a fixed value or a predefined profile can be followed, regardless of pressure variations or other changes in the system. As a control element, a proportional valve working at low friction guarantees ahigh sensitivity and the good control characteristics of the unit.
1）High dynamic control through fast flow measurement
2）Applicable for liquid dosing up to 600 ml/min (36 l/h)
3）No moving parts in medium
4）Fieldbus optional
5）Compact version
氣體質(zhì)量流量控制器部分訂貨號(hào)如下：
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