Level measurement in buffer tanks for milk products

Application

Finished curd is stored in a buffer container before it is packaged. A level measurement in this container guarantees a continuous supply for the packaging line. The implemented sensor must fulfill the current standards of the food industry, which are: material conformity of the medium-touching parts, high surface quality (Ra) < 0.8 μm as well as hygienic process connection for optimal cleanability according to FDA and EHEDG. Compliance with operational and technical criteria, such as high precision, long-term stability, ruggedness, simple commissioning, chemical resistance and long service life, is also a prerequisite.

The process data

The solution

This measuring task is usually performed by a differential pressure measurement with two hydrostatic pressure transmitters. The measurement is affected, however, by the rapid temperature rise during the cleaning cycle and the sudden drop in temperature when the product is filled. Moreover, two process connections in the often double-walled containers are required for the measurement setup. Hence, contactless radar sensors are an interesting alternative here. Only one container aperture is required for the installation of the radar sensor.

The advantages

	Quick mounting and setup
	Reliable measurement under all process conditions
	Non-contact, maintenance-free measurement