We offer the widest product range of low-flow (mass) flow meters and controllers on the market. Numerous styles of both standard and bespoke instruments can be offered for applications in laboratory, machinery, industry and hazardous areas.
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Bronkhorst instruments are used for numerous applications in many different markets. In this section you will find an overview of the main markets for our equipment, illustrated with some typical examples of applications.
Are you looking for technical documentation, are you interested to learn more about the measuring principles of Bronkhorst products, or you do want to get in contact with a Bronkhorst Service Engineer? This section will guide you to the relevant service & support topics.
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To give a piece of candy its own taste, texture and appearance, or to enhance this character, during manufacturing additives such as colourings, flavourings and acid have to be added to a main stream. The latter is a hot, viscous mass that usually consists of water, sugar and glucose syrup.
Within the candy industry, Haas Mondomix is a machine builder who supplies their equipment to confectionery manufacturers. This equipment is being used worldwide. Recently, Bronkhorst Nederland supplied multiple ES-FLOW ultrasonic volume flow meters in order to measure how much of each of the additives has been added to the main stream. By using these ultrasonic volume flow meters, the accuracy of measurement has been improved, and so is the quality control of the manufacturing process.
The flows of colouring agent, flavouring agent and acid are coming from three individual reservoirs, and enter the main stream through three separate small pumps. Each of these pumps are controlled by a PLC (programmable logic controller), where the main stream is the master.
By measuring how much of the three additives is added to the main stream, the consumption of these additives has to become more efficient while keeping the quality of the end product - the mixture that eventually becomes the piece of candy - at a constant, high level.
The Bronkhorst solution consists of 3 ES-FLOW ultrasonic flow meters, each one for measuring the flow of colouring, flavouring and acid. As these flows are quite concentrated, only small amounts have to be added. The flow range of this ultrasonic flow meter, which measure tiny volume flows from 4 up to 1500 ml/min with high precision, is ideal for this application. The accuracy of the ES-FLOW instrument (+/- 1%), which is sufficient for the current application, has been the main reason for choosing this device.
ES-FLOW flow meters use ultrasound to measure the volume flow rates of liquids. They are constructed in a stainless steel housing, with a display as part of the device for read-out and control. At the back of the display there is a connector for connection to a pump or a control valve, and with PID control on board, a process can be controlled through the display. As usual with Bronkhorst equipment, Profibus, Flow-bus or Modbus protocols for digital communication can be used.
Especially colourings and flavourings are costly agents, and a controlled and efficient use of these substances will gain a better quality product, and will save on raw materials as well. By using the ultrasonic flow meter, the quality control of the process is improved. In the old days, if something went wrong in the manufacturing process, poor quality was observed by looking at the candy at a rather late stage, resulting in entire batches of candy that had to be defined as 'second choice'. In the new way using the ES-FLOW flow meter, poor quality - if any - will be detected in an earlier stage.
Depending on the type of candy to be produced, the amounts and types of colourings, flavourings and acid will vary. For one type of candy - a red wine gum, for example - these amounts have to be constant for the entire batch. However, the setup is sufficiently flexible to be used for another type of candy - take a green wine gum - after rinsing in between. The amounts of additive will be programmed in the PLC.
In the current process, the ultrasonic flow meter is used for measuring, and sends the measurement values to the PLC. Adaptations - if any - have to be done manually. Currently, this procedure is standardised within Haas Mondomix, so that ES-FLOW devices are incorporated as standard option in Haas Mondomix equipment for confectionery manufacturing.
The ES-FLOW has been developed for food industry, and has a sanitary design as a feature. Devices that get in contact with food substances must not negatively influence the food safety in general, and specifically must not adversely affect the food composition and its taste. Therefore, the device with IP67 rating consists of one single, continuous tube that is CIP cleanable (cleaning in place, i.e. using steam as sterilising agent without disassembling the setup), and that doesn't contain dead volumes for microorganisms to accumulate.
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