Food & Beverage

Best practices of measuring pH in Food & Beverage industries

What you need to know when choosing a pH sensor for your F&B application

pH measurement in brewing

Brewing is not only a very old, traditional craft, but also a highly competitive business. Producing high quality beer is no longer a plus, but a necessity, and outstanding quality can only be achieved with the best measuring instruments.

There are several factors that can improve beer quality, and the glass splinters from broken instruments are certainly not one of those. The use of glass pH electrodes is not an option – they can break and spoil the whole batch. ISFET electrodes are a viable alternative, but they are not suitable for periodic exposure to CIP, and must be taken out of the process each time for cleaning. Endress+Hauser offers a variety of sensors to overcome these issues, which can withstand different treatments and process conditions.

Candy production

Production of these sweets causes heavily soiled wastewater, which is treated and released into the sewage. Modern laws now widen the plant operator‘s responsibility to analyze wastewater prior disposal.

The operator must now continuously monitor the condition, functional capability, and operation of the treatment plant, as well as the amount and type of wastewater. However, fulfilling these requirements results in higher operation costs. 

  • The necessary instrumentation for controlling wastewater should cost as little as possible and incur the lowest possible maintenance effort.
  • It has to be easy to operate, as the candy factory‘s employees are experts in producing sweets but have hardly any experience in analyzing wastewater.

Easy handling is the most important criteria for the new instrumentation and pH sensors with Memosens technology perfectly fulfil these requirements. Measurement runs smoothly and reliably so that the employees are not distracted from their normal work by error messages or downtime.

Maintenance is very easy thanks to the Memosens sensor plugs. The sensors can be turned on and off easily and can even be pre-calibrated (calibration data is stored inside the sensor head). This minimizes the maintenance time inside the process.

Last but not least, digital pH sensors deliver precise measurement values. These are fed to the PLC, which controls the wastewater‘s composition and lowers the pH value as required. The pH value always remains within the legally allowed limits, allowing you to enjoy your peace of mind and forget about expensive fines.

Powder milk production

Dairy products are used all over the world, but fresh milk is not always available, whether in coffee machines, the production of instant-baby food, or in the production of chocolate. These are the fields of application for milk powder.

Powder milk is produced through the spray drying and water extraction of milk. This process is undertaken under the special pH conditions of 6.8, so to achieve the best quality output. Other factors to consider include:

  • The measurement should be glass-free to prevent breakages that would spoil the batch.
  • Legal regulations have to be fulfilled: CIP cleaning is requested to guarantee a hygienic product.