定位器（略称VPR定位器）是日本山武——霍尼韦尔公司VFR凸轮挠词调治阀的专用附件。
VPR pneumatic valve positioner (the VPR Locator) is Yamatake -Honeywell VFR Cam flexure control valve of the special annex.
由温度传感器对温度举行监测和采样，并将信号举行处理惩罚后输入PLC中，然后根据PLC控制步伐对温度举行调治控制。
From temperature sensors on temperature monitoring and sampling, signal processing and input after the PLC, then under PLC control procedures to regulate the temperature control.
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