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Ege Elektronik Flow Sensor and flow measurement
Ege Elektronik Flow Sensor and flow measurement

Ege Elektronik Flow Sensor and flow measurement

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Flow Measurement

EGE offers thermodynamic flow controllers without moveable parts, which means they are robust and resistant to soiling. Controllers for fluids such as water, glycol mixtures or chemicals are as much part of the product range as sensors for gases such as air and carbon dioxide. Intrinsically safe sensors based on ATEX for explosive and hazardous areas are also available. Additional variations consist of high-temperature sensors up to 160 °C, special sensors made from such materials as Hastelloy, Monel, titanium, and tantalum with high resistance to chemicals, and programmable flow sensors with digital displays. The flow controllers are either screwed into the side of the pipe or added to the line itself in the form of inline sensors.

Fluid controllers

Air flow controller compact inline The thermal flow controllers by EGE can be used wherever flows have to be monitored. The standard one-piece sensors are made from the very durable V4a stainless steel (DIN 1.4571).  For especially aggressive fluids, EGE manufactures sensors made from special materials such as bronze, Hastelloy, titanium or even PTFE. EGE flow controllers are reliable units for the automation industry, chemical industry, and wherever flows have to be monitored in a safe, robust and low-maintenance manner.

Air flow controllers

EGE airflow controllers are defined by their quick response and reliable function. The applied function principle does not require any moveable parts for the airflow controllers, which is why they well suited for use in aggressive environments.  Airflow controllers are available for flows from 0.2 m/s to 25 m/s.

Function

The function of the flow controller is based on the thermodynamic principle. The sensor is heated internally a few degrees °C compared to the medium into which it projects. When the medium flows, the heat generated in the sensor is conducted away by the medium, i. e. the sensor cools down. The temperature within the sensor is measured and compared to the temperature of the medium. The state of flow can be derived for each medium by the temperature difference attained.

On the basis of this functional principle, EGE manufactures flow monitors for liquid and gaseous media. The sensitivity of thermodynamic flow monitors depends on the thermal characteristics of a medium. The detection range of a standard sensor for oil, for example, is three times as great than for water and for air is approx. 30 times greater than for water due to the reduced heat conductivity. Unless stated otherwise, the technical sensor data are specified for water.

Areas of application for flow monitors

Thermodynamic flow monitors function without any moving parts, therefore they are not subject to failure due to corroded bearings, torn impellers or deflector deformation. This reliability is highly valued in many industries. Today, flow monitors are used both in liquids and in the air and are employed even in explosion hazardous environments.


Monitoring of cooling

The cooling water on welding machinery is monitored using compact stainless steel devices. This ensures sufficient cooling even for rapid cycles, otherwise, the welding robot will be switched off by the sensor.

The cooling lubricant flow is monitored continuously in processing centers. The tools are protected and have a greater service life.

In metal processing, e.g. rolling mills and wire drawing machines, the rolls and coils will be cooled continually. This is monitored by thermodynamic sensors. Due to the rough environmental conditions, the sensors are designed for up to 160 °C and settings are made away from the heat with special amplifiers.


Monitoring of flow medium

The run-dry protection of pumps is a frequent application, which often uses compact sensors with time delay. In dosing technology, the aggregate, usually small flow quantities, is measured exactly by means of inline sensors. These sensors are inserted like a pipe into the line.

Monitoring of filters and sieves can be ensured by medium flow control; if the flow is progressively reduced, the filter must be renewed. Where this is not carried out, the pump is switched off in a second stage should the medium flow drop further. This uses a sensor with two switching points.

Monitoring of process flow

The monitoring of cleaning processes using aggressive media at times is often only possible with special materials, e.g. Hastelloy or tantalum.

Extraction systems for hazardous vapors at laboratory workstations as well as the hall ventilation in the hexane processing industry are monitored using airflow sensors.

CIP/SIP processes can be monitored and documented with flow monitors.

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