INSTRUMENTATION • ELECTRONICS
SSUPERIORENSORS Accurate humidity measurements improve baking efficiency and consistency B
ühler, a leading producer of commercial food equipment including baking ovens, employs Vaisala technology in its Meincke
Turbu ovens, including Vaisala’s dew point/temperature probes and industrial transmitters. Environmental concerns and rising energy prices are driving demands for improved efficiency across all industries. Tis is particularly the case in food production, and especially in processes involving baking ovens, which can run at temperatures of up to 325°C. Bühler’s advanced Meincke Turbu indirect-fired convection ovens aim to increase efficiency in line with the company’s strategic commitment to help its customers make substantial savings in energy, water and product wastage. One customer was using natural gas at an average annual cost of €10
million before ordering the ovens, but with accurate humidity measurements a reduction in gas consumption of as much as 20% was achieved.
ENSURING CONSISTENTLY RELIABLE BAKING PRODUCT QUALITY Te advantages of accurate monitoring are explained by Morten Bøgild and Christoffer Bay, senior R&D engineers at Bühler’s biscuit business unit in Denmark. “By measuring the humidity levels inside the oven, you can control the process to maintain a consistent baking profile, even with fluctuations in other factors such as ambient conditions or ingredient quality,” explains Bøgild. “Tis enables a more consistent product in terms of spread, thickness, colouring, and other important quality parameters, thereby minimising wastage.”
Oven sensor with Indigo500 transmitter 44
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In addition, Bay says: “An oven with built-in measurement technology gives our customers the opportunity to control the humidity of their ovens themselves, as well as the temperature, which can be particularly valuable for those producing multiple products with different baking profiles.” Te Vaisala Drycap dew point and temperature probe DMP6 is designed for in-line humidity measurement at very high temperatures and a wide dew point range. It has a passive cooling function that draws heat away from the probe to reduce the temperature to within the sensor’s optimal range, making it ideal for the extreme environment of an industrial baking oven. Tis robust technology enables Bühler to offer its customers more accuracy and flexibility when setting up their ovens. In addition, the DMP6 measurement probe can be connected to a Vaisala Indigo500 series transmitter, which enables real-time data visualisation and probe configuration.
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