德国宝帝质量流量控制器-化工仪器网-手机站

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质量流量控制器/比例阀

Massflow under control

Massflow gas measurement is independant of temperature and pressure, thus controlling a process gas can be stable and reproduceable. Massflow controllers contain a PID-controller and can be driven through norm signal or field bus. Massflow meters are without actuators and are only for measuring massflow.

Control valve strokes proportionall

Positioning valves can be combined with pneumatic, motorized, piezoelectric or solenoid actuators. The main differences between the various actuation principles are type of media separation, dynamic and force properties. Solenoid-operated positioning valves are known in practice as proportional valves and cover the nominal diameter range below 25 mm. Open and closed control loops can be developed using proportional valves. Open control loops control the valve without feedback signal, while closed control loops control the difference between the set-point and actual values. Switching solenoid valves, which are normally closed, form the basis for Bürkert proportional valves. Direct-acting proportional valves receive their feed below their seat, while servo-assisted models receive their feed above their seat.

德国宝帝质量流量控制器

8710		Mass Flow Controller for Gases, "capillary", full scale range 0.01 to 1 lN/min （reference nitrogen）
8701		Mass Flow Meter for Gases, "economy", full scale range 0.02 to 50 lN/min （reference nitrogen）
8711		Mass Flow Controller for Gases, "economy", full scale range 0.02 to 50 lN/min （reference nitrogen）
8702		Mass Flow Meter for Gases, "industrial", full scale range 0.02 to 50 lN/min （reference nitrogen）
8712		Mass Flow Controller for Gases, "industrial", full scale range 0.02 to 50 lN/min （reference nitrogen）
8703		Mass Flow Meter for Gases, "OEM", full scale range 0.02 to 50 lN/min （reference nitrogen）
8713		Mass Flow Controller for Gases, "OEM", full scale range 0.02 to 50 lN/min （reference nitrogen）
8006		Mass Flow Meter for Gases, "heavy-duty", full scale range 25 to 1500 lN/min （reference nitrogen）
8626		Mass Flow Controller for Gases, "heavy-duty", full scale range 25 to 1500 lN/min （reference nitrogen）

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