Bronkhorst

流量計和泵組合

如果您有計量泵,為什麼還需要質量流量計或體積流量計?

傳統意義上,人們認爲定量給料或計量泵是準確的。 對於泵的每一次旋轉,泵頭都會推送一定量體積的液體。 一定時間下傳送量基於泵頭的旋轉次數。 然而在實踐中,似乎很難達到高精確水平。 百分之幾的偏差並不罕見。 這是為什麼呢?

像這樣的不准確是由許多不斷變化的製程條件引起的,例如:

  • 溫度
  • 壓力變化
  • 空氣滯留
  • 部件磨損
這些因素中的一個或多個會影響每次泵頭旋轉時排出的液體量,從而導致較小的不准確性。 但是,當在一段時間內進行多次旋轉時,這可能會導致相當大的流量偏差。

通過使用直接控制泵的 Bronkhorst ES-FLOW 或 mini CORI-FLOW 流量計可以避免此類影響。

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Flow meter & Pump combinations

E-book: How to handle low liquid flows

Focusing on low liquid flows < 100 g/h

Download the e-book 'How to handle low liquid flows' to find out more about 'low flows'. Including in-depth information, technical advice and insider tips from our experts.

Download e-book

帶泵超音波體積流量計


該視頻解釋了超音波體積流量計的工作原理以及如何通過超音波體積流量計和齒輪泵的組合使用來調節流量。

找到您的超音波流量計

帶泵科式力質量流量計


該視頻解釋了科氏力質量流量計的原理,以及如何通過結合使用科氏力質量流量計和齒輪泵來快速、精確地調節流量。

找到您的科式力流量計

Integrated PID for direct pump control

Just by adding a mass flow meter or volume flow meter to your process, you will not get the best solution as you still need an additonal PID controller to drive a pump to achieve the desired dose or flow. The PID controller is used to compare the real flow signal with the desired flow. The Bronkhorst Coriolis mass flow meters and ultrasonic volume flow meters have an integrated PID controller. So, by using these instruments it is not necessary to add an additional PID controller. You do not have to include the pump in the control system anymore, you just give a set point demand to the flow meter and it will drive the pump to the desired flow. The big advantage here is that the mass flow meter or volume flow meter use a high frequency signal, which makes this way of controlling the pump much faster than the traditional way of pump control. 

It's like a black box: You indicate your desired flow and the black box generates this flow for you, stable and with a high accuracy as well. 
 

Your benefits

  • Less waste & cost reduction: You know what you pump in real-time.
  • Less down time; Fluid independent flow measurement and control - no need for recalibration when changing fluids.
  • Real measurement of data on flow performance for quality and monitoring purposes, including a response alarm.
  • Automatic correction for decreased pump performance over time.
  • Correction on ambient conditions that have an influence on your physical properties of the fluid.
  • Integrated PID controller for fast and accurate flow control.
  • Remote communication with the control loop via Bus protocol.

Downloads

Brochures
Liquid Dosing Solutions
Manuals
Manual liquid dosing / control
Manual liquid dosing set
Hook-up diagrams
Hook-up diagram M13-M14 with Dunker BG-series
Hook-up diagram ML120 with Dunker BG-series
Hook-up diagram M15 with Dunker BG-series
Hook-up diagram ES-FLOW with Dunker BG-series

Bronkhorst dosing solutions with pump
Liquid mass flow meter with pump

Coriolis Mass Flow Meter with pump

The combination of a Coriolis mass flow meter with pump can be used for various dosing applications such as dosing liquid colourants (dye) to detergent, laundry care products and cleaning products. 
 

Read the blog about pump control
Dosing solution with ultrasonic volume flow meter and pump

Ultrasonic volume flow meter with pump

Also the ES-FLOW ultrasonic liquid volume flow meter can be used in comination with a pump. It makes it easy to dose additives, such as colourings, flavourings and acids have to be added to the production process. 
 

Read the blog about additive dosing
Skid solution with Coriolis mass flow meter

Skid solution with Coriolis Mass Flow Meter with gear pump and pressure sensor

For accurate control of liquid flows in a continuous pharmaceutical manufacturing application Bronkhorst designed and supplied a complete skid solution that combined a Coriolis mass flow meter with a gear pump, pressure sensor and a number of liquid filters and valves.

Read the application story
Liquid dosing module

Liquid Dosing Module

Besides these combinations, Bronkhorst can also facilitate customers in more complex solutions, integrating mass flow measurement and control equipment into boxes, modules or cabinets, designed in collaboration with our customers.
A liquid dosing module like this can be used for ratio control, dosing, filling, mixing and blending. 

Download brochure

Dosing solutions can be used in many different industries

Low flow dosing solutions can be used in many different industries. For example: In processes where liquid have to be dispensed into a container that will require quality assurance. If you use a flow meter to control the dose you can achieve 100% quality checking of your product with reduced human input. Or if you need to dose additives, performance chemicals or mix liquids then the ability to control the flow of the additive and know what that flow is can be a huge advantage to the outcome of the application.

 

Application notes of dosing applications


台灣柏朗豪斯特股份有限公司

新竹縣竹北市台元街三十八號四樓之一、二
Rm. 1 & 2, 4F., No.38, Taiyuan St., Zhubei City, Hsinchu County 302, Taiwan (R.O.C.)
電話 +886 3-5600-518
[email protected]

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