Dieter Kriz Sensortechnik switch Germany Dieter Kriz Sensortechnik model Dieter Kriz Sensortechnik price

Dieter Kriz Sensortechnik switch is a switch that measures the air flow drawn into the engine. For electronically controlled gasoline injection engines, in order to obtain the optimal mixture concentration under various operating conditions, it is necessary to accurately measure the amount of air drawn into the engine at every instant, using this as the main basis for the ECU to calculate (control) the fuel injection quantity. If the air flow switch or wiring fails, the ECU will not receive the correct intake air signal, preventing normal control of the fuel injection quantity, which will cause the mixture to become too rich or too lean, resulting in abnormal engine operation.

Dieter Kriz Sensortechnik switch features

Currently, baffles can be designed according to the water flow rate to reduce water resistance generated when water flows through the flow switch, thereby reducing head loss in the water system. However, due to long-term impact from water flow, baffle-type switches still suffer from fatigue issues; even if the flow value is calibrated at the factory, setpoint drift may occur. They are typically used in applications where precise protection flow values are not required, i.e., for flow interruption protection where water flow in pipes is suddenly cut off. There are very few designs specifically for water-source heat pump units in China. The baffle type is specifically developed for water flow monitoring in water-loop/ground-source heat pump air conditioning units. It is equipped with different baffles for different pipe diameters, and the water resistance of each baffle does not exceed 0.5 meters of water column, which is significantly lower than that of target-type switches. Each baffle-type flow switch is equipped with pipe fittings identical to those of the water-loop heat pump unit's water pipes. On-site installation only requires connecting to the water pipe without any modification to the baffle. In addition, the pressure rating of the baffle-type water flow switch is greater than 25bar, making it a low-cost water flow switch for water-loop heat pump units with less stringent water flow requirements. Feedback from use on water-loop/ground-source heat pump units shows that differential pressure switches can effectively identify problems in the on-site installation of water piping for water-loop heat pump units, completely avoiding heat exchanger freezing caused by low water flow. Flow switches can also protect against heat exchanger freezing caused by reduced water flow due to clogged water filters. Furthermore, water pipe differential pressure switches do not carry the risk of fatigue failure associated with target flow switches. Especially when there is a small amount of air in the water piping, the flow switch operates very stably without floating issues similar to those seen in target flow switches. Feedback from years of use has not revealed any failures of the differential pressure switch itself.

Dieter Kriz Sensortechnik switch principle

Basic principles and types of ultrasonic flowmeters: When ultrasound propagates through a flowing fluid, it carries information about the fluid's flow velocity. Therefore, by receiving the ultrasonic waves, the fluid's flow velocity can be detected and converted into flow rate. Based on the detection method, ultrasonic flowmeters can be classified into different types such as transit-time difference method, Doppler method, beam deflection method, noise method, and correlation method. Ultrasonic flowmeters are non-contact instruments that have come into application only in the last decade or so with the rapid development of integrated circuit technology. They are suitable for measuring fluids that are difficult to contact and observe, as well as large-diameter pipe flows. When linked with level gauges, they can measure flow in open channels. Using ultrasonic flow measurement means no measuring elements need to be installed in the fluid, so the fluid's flow state is not altered, no additional resistance is generated, and instrument installation and maintenance do not affect production line operation, making it an ideal energy-saving flowmeter. Industrial flow measurement commonly faces difficulties in measuring large pipe diameters and high flow rates. This is because general flowmeters encounter manufacturing and transportation difficulties as the measurement pipe diameter increases, leading to higher costs, greater energy loss, and installation challenges. Ultrasonic flowmeters avoid all these disadvantages. Since various ultrasonic flowmeters can be installed externally on the pipe for non-contact flow measurement, the instrument cost is basically unrelated to the measured pipe diameter. In contrast, the cost of other types of flowmeters increases substantially with diameter. Therefore, the larger the diameter, the more superior the cost-performance ratio of ultrasonic flowmeters compared to other types with similar functions. They are considered better instruments for large-diameter flow measurement. Doppler method ultrasonic flowmeters can measure two-phase media flow, so they can be used for measuring dirty flows such as sewers and sewage. In power plants.

Dieter Kriz Sensortechnik switch selection

When selecting a flow switch, users should choose a suitable switch based on their own needs. Many users have different requirements for the switches they use, so the selected standards also vary. If professional data and results are required, national standards should be selected. However, if it is just for simple analysis as an instrument within an enterprise, enterprise standards can be selected. If you intend to purchase a flow switch, please consider carefully and choose switches with guaranteed quality and good usability. Because many people assume that new switches have higher technology, this is a very one-sided view. New products must possess mature technology to be good products. In many economic sectors, accurate flow measurement has become very important. Nowadays, switches are basically used to measure flow quantities. The switch senses fluid flow and converts it into a usable output signal; installing a switch makes operation simpler and more convenient. The quantity of flowing objects passing through per unit time is called flow rate, and different flow switches are used for different objects, often distinguished by the measured medium and the measurement method. Flow switches are generally used for the flow of media fluids in industrial pipelines. Generally, there are various media such as gas, liquid, and steam, and several types of flow switches can be universal for these media types. The first type is the vortex flow switch. Another type is the ultrasonic flow switch. With the development of ultrasonic technology, ultrasonic flow switches can generally measure the flow of most flowing objects. Ultrasonic flow switches also have various measurement methods, each with its own characteristics. We should select based on factors such as the properties of the measured fluid, flow velocity distribution, pipeline installation location, and accuracy requirements. Since industrial flow measurement commonly faces difficulties in measuring large pipe diameters and high flow rates—because general flow switches encounter manufacturing and transportation difficulties as the measurement pipe diameter increases, leading to higher costs, greater energy loss, and installation challenges—ultrasonic flowmeters avoid all these disadvantages. The flow measurement accuracy of ultrasonic flow switches is hardly affected by parameters such as temperature, pressure, viscosity, and density of the measured fluid. They can also be made into non-contact and portable measuring instruments, thus solving flow measurement problems for highly corrosive, non-conductive, radioactive, and flammable/explosive media that are difficult for other types of instruments to measure.

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