Baking Oven Monitoring

Applications such as bread baking and cereal manufacturing, for example, must have a carefully controlled humidity level in the dryers and ovens in order to keep quality and yield high and to give distinctive characteristics to the finished product.

Application Note: Special requirements for bakery applications

In many baking and drying processes with high temperatures, the right conditions decide between first-class and low-quality food. A combination of high temperature (up to 350 ° C) and high humidity presents measuring instruments with particular challenges. Very few devices can withstand these conditions.

The Vaisala DRYCAP® Dewpoint and Temperature Probe DMP6 meets these requirements. When configured to customer specifications, it can be used safely in temperatures up to 350 °C.

Moisture control ensures high-quality crackers

One example of a food production process where the right moisture level in the ambient air is essential is in cracker production. The crackers are dried in three different phases in which the temperature varies from 150 to 300 °C (302 … 572 °F) and the humidity goes from high to low. If the ambient air has too much moisture in it, the crackers retain a high level of free moisture and will not crackle, as they should. 

The high water content also means the crackers spoil more easily, and the production yield stays low. On the other hand, if the air is too dry, the surface of the crackers can dry too quickly and trap the free moisture within – or the product can become too dry and brittle. Drying the product too much also wastes heating power. In both cases the color and flavor of the crackers suffer and the product yield is poor. Similar effects take place in bread and biscuit baking and in cereal and snack manufacture. Even in processes like roasting, the ambient moisture level changes the end product.

The DMP6 keeps cool at 350 °C

The Vaisala DRYCAP® Dewpoint is specially designed for applications where both high temperatures and high humidities occur, and the cooling set is a standard feature. The sensor can be placed directly in high temperatures without sacrificing measurement accuracy or stability. The DMP6 has a unique autocalibration function that performs calibration and adjustment by itself while the measured process is running. All corrections, if any, are also run automatically, which allows your operations to run without disruptions.

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Measurement of relative humidity and dew point

Many high-temperature baking and drying processes require stable, reliable, and accurate measuring devices for moisture measurement, which are at the same time easy to use and flexibly determinable.

For example, drying of demineralized whey can be optimized with Vaisala humidity and temperature transmitters, which measure the humidity and temperature of the dryer supply and exhaust air. The humidity data of the supply air is used to control the process, while the humidity data of the exhaust air shows the amount of moisture in the powder, which indicates the quality of the final product. Avoiding over-drying saves time and energy.

TRANSMITTERS FOR THE FOOD AND BEVERAGE INDUSTRY

Baking oven monitoring related products

Probe head and probe body of the DMP6 for very high temperatures

Dew Point Probe DMP6

Vaisala DRYCAP® Dew Point and Temperature Probe DMP6 is designed for in-line humidity measurement in industrial drying applications with very high temperatures and a wide dew point range.
DM70 Hand-Held Dewpoint Meter

Handheld Dewpoint Meter DM70

Handheld Dewpoint Meter DM70 for spot-checking applications and field calibration offers accurate and fast measurement for industrial dew point applications, such as compressed air, metal treatment, additive manufacturing as well as food and plastics drying.
Indigo520 with probe

Indigo500 Series Transmitters

The Vaisala Indigo500 series transmitters are host devices for Vaisala Indigo-compatible, stand-alone smart probes. The Indigo500 series include multi-functional Indigo520 transmitter and Indigo510 transmitter with basic features.
DMT345 and DMT346 Dewpoint Transmitters

Dew Point Transmitters DMT345 and DMT346

Note that the DMT340 series is being discontinued. The Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346 are designed for humidity measurement in industrial drying applications with particularly high temperatures.
The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers.

Humidity Module HMM100

The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers. The modules provide a single analog output channel for relative humidity (RH) or dew point (Td).
Vaisala HUMICAP® Humidity and Temperature Probe HMP5 is designed for high temperature applications

Relative Humidity and Temperature Probe HMP5

Vaisala HUMICAP® Humidity and Temperature Probe HMP5 is designed for high temperature applications such as baking ovens, pasta dryers, ceramics and industrial drying kilns where measurement performance and chemical tolerance are essential.

Further reading

Customer case

How accurate humidity measurement is helping Bühler’s customers bake more efficiently and consistently

To ensure accurate real-time measurement of humidity levels in their Meincke Turbu ovens, Bühler employs the highly accurate and versatile Vaisala DRYCAP® Dew Point and Temperature Probe DMP6 along with Indigo500 series transmitters.

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Blog

The best thing since sliced bread – how humidity measurements increase baking efficiency

To get the perfect loaf of bread you need to ensure you’re baking at the correct temperature with the right level of humidity. To do this requires stable, reliable, and accurate measurement instruments that can help ensure optimal product quality and consistency even at very high temperatures.

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Benefits of digital Modbus communication compared to analog signal transmission

Although analog probes and data collection technology have a lot to offer, they also present several risks. Modbus is a digital communication protocol that overcomes many of these issues.

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Ensuring accurate humidity measurement in industrial processes

Humidity measurement is a key part of many industrial processes. With potentially hundreds or even thousands of measurement points needed, ensuring stable, precise, and reliable measurement is extremely important.

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Do I need an Indigo transmitter or just an Indigo probe?

There are many probe options to choose from measuring several parameters: humidity, temperature, dew point, CO2, moisture in oil, and vaporized hydrogen peroxide. The probes can be attached to Indigo500 or Indigo200 series transmitter. When is a probe sufficient on its own – and when do you need both a probe and a transmitter?

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Built to survive, even outside: the Vaisala Indigo500 Series

Some of our customers have applications that require measurement transmitters to be installed outside, so the Vaisala Indigo500 and its family of smart probes have been designed to be durable enough for these kinds of rough, tough conditions.

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Indigo500 series dual-probe support

Learn about the benefits of using two probes measuring either the same parameter or two different ones.

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Optimizing industrial processes helps mitigate climate change

Vaisala’s Industrial Measurements business area provides industrial customers with better visibility into their processes. Adjusting processes or conditions helps not only in terms of productivity but also to conserve energy and natural resources, which has a major impact in fighting climate change.

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Give Your Climate Chamber a Boost

The climate chamber being used for testing must be capable of accurately replicating the required extreme climate conditions.

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Relative Humidity – What Is It And Why Is It Important?

By far the biggest reason to monitor relative humidity is to control moisture around a final product. In most cases this means making sure that the RH never rises too high.

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