When it comes to monitoring the flow of liquid media, the flow monitor for water is used. These are used specifically in pipelines to keep an eye on water and cooling circuits. It is also possible to use the switch on the flow monitor for water to activate an actuator that reacts to the sensor values.

Flow monitors for water and other liquid media with a glycol content of up to 30 % demonstrate their qualities, particularly when it comes to protecting against water shortages, such as in heating and cooling systems or installations, which in the worst case can lead to operational downtime. If you are looking for a model that meets your highest requirements, we at SEIKOM Electronic are sure to have the right one for you. Our flow monitors for liquid media impress with their innovative compact design or evaluation unit for control cabinet installation as well as their G1/2-inch or G1/4-inch process connections.

Rely on quality products 100 % "Made in Germany" and take your time to browse through our professional selection of flow monitors for water.

Various examples of applications for our products

Flow monitoring for power plants

Cooling circuit monitoring

Flow monitoring for the chemical industry

Circuit monitoring

Flow monitoring for water and wastewater systems

Monitoring of water circuits and wastewater treatment plants

Flow monitoring for cooling and air conditioning systems

Chiller monitoring

High-quality flow meter for water from a single source

Around 30 years ago, we at SEIKOM Electronic set the first milestone in our company's history and, even in the early years, focused on a range of innovative measurement and control technology that stands out from the market with TÜV-certified quality, performance and functionality. Our unceasing efforts, also in terms of customer service, have made us one of the leading suppliers today, which does not mean that we rest on our laurels. Standing still is not an option for us, which is why we develop our flow monitors for water and temperature sensors for temperature measurement, Pressure transmitter for pressure measurement, various variants, for Measure air quality, Heating, ventilation, air conditioningdevices and much more on an ongoing basis. In addition, we are one of the few companies that can offer you a Safety Integrity Level range and ATEX products offers.

You can also benefit from our comprehensive and individual advice, particularly fast delivery and high reliability. With our many years of experience and extensive expertise, we are able to design individual solutions for you when it comes to flow monitors for water. Please feel free to contact us personally!

What does a flow meter for water offer?

The flow monitor for water is used to monitor and measure the flow or lack of flow of water or other liquids in a pipe system. The models are primarily used in industrial and domestic environments to ensure that liquid media flow properly through a system and that dry running is avoided in good time. When an unexpected stop or significant change in water flow is detected, a water flow monitor is able to provide an audible warning or control other devices and system components to prevent potential damage or unsafe conditions. The use of a water flow monitor is possible in both open channels and closed pipe systems.


How does a flow monitor for liquid media work?

In order for a flow monitor for water to permanently measure the flow rate of a liquid, it works with functional principles that differ depending on the model.

  1. Thermal principle - also known as the calorimetric principle

A thermal flow monitor for water uses a heated temperature sensor and another, which is not heated, as a reference. When there is a flow, the heat is carried away from the heated sensor. The difference between the two sensors provides information about the flow rate. If the liquid is not flowing or the flow rate falls below a certain value, the temperature differential changes, triggering an alarm or controlling a system.

Flow monitors for liquids from SEIKOM Electronic rely primarily on this measuring method due to the high accuracy and the fact that no moving parts are used.

  1. Mechanical principle:

A frequently used functional principle of a flow switch for water is the so-called paddle switch. Here, a paddle is immersed in the flow of liquid. When the liquid flows at a sufficient speed, it pushes the paddle in a certain direction. A switch detects the position of the paddle. If the flow rate falls below a set value, the paddle moves back to its starting position and activates the switch.

Experience has shown that paddle guards are comparatively maintenance-intensive, as the paddles can become stuck due to foreign bodies or increasing corrosion.

  1. Electronic principle

Flow monitors for water can also use the principle of inductive or capacitive detection. In this case, the flow is monitored by the change in electrical properties, such as inductance or capacitance, which are influenced by the flow velocity.

  1. Differential pressure principle

In some systems, the flow is routed via a throttle point in the pipe. The resulting pressure difference before and after the throttle point is proportional to the flow rate. A pressure switch that reacts to this difference can be used here as a flow monitor for water.

Where no floats can be installed, electromagnetic flow monitors for water are suitable. However, these can only be used with liquids that are electrically conductive. A magnetic field is introduced into the pipe system. A high electrical voltage is then applied. When the medium flows through the pipe, the magnetic field is activated and the flow rate is measured.

What are the advantages of flow monitoring for water?

Flow monitors for water are indispensable in safety-critical applications. They ensure that systems work properly and warn of possible malfunctions. For example, flow monitoring for a cooling circuit, which is dependent on a continuous flow of water, can prevent dry running and therefore overheating and consequently damage or even hazardous situations in good time.

Without the advance warning of a water flow monitor, it is not uncommon for an undetected dry run of a pump to lead to irreparable damage. By detecting the situation in good time, the water flow monitor gives you enough time to initiate countermeasures or the pump is switched off automatically.

A major advantage of flow monitors for water is the high degree of automation and precision. Let the sensors and actuators of the flow monitor for water work together and ensure that the flow monitor acts directly without your intervention when a critical value is reached. You can also detect potential problems at an early stage, long before they lead to major failures. You benefit from the flexible setting options. Depending on your requirements, you can program a flow monitor for water with different threshold values, response times or alarm conditions.

Remember that pumps in systems often run continuously, even when no water flow is required. In this case, a flow monitor for water helps to organize operation only when actually needed, enabling you to save considerable energy costs and reduce your operating costs in the long term.

Most flow monitors are also designed in such a way that they can be integrated into existing systems with minimal technical effort. Their maintenance requirements are generally low, which means you can save even more costs.

Where are the areas of application for water flow monitors?

Flow monitors for water are used in numerous industries and applications, as the monitoring of water flows is often crucial for the safety, efficiency and functionality of the systems installed here.

These are the areas of application for flow monitoring of water and co:

  • Heating, ventilation and air conditioning systems (HVAC)
  • Industrial cooling circuits
  • Fire protection systems
  • Irrigation systems
  • Hydroelectric systems
  • Pump monitoring

These few examples illustrate the wide range of applications in which flow monitors for water play a central role. They ensure the safety, efficiency and reliability of systems that depend on a constant and regulated flow of water.

Our selection of flow monitors for water

In our Product categories you will find our offers including our selection of flow monitors for water. This enables us to meet every requirement and provide customized solutions.

What you can expect from us:

The compact flow monitor RLSW®7 with relay output for monitoring liquid media comes with a sensor and reliably measures water and air flows. The device features a robust design and a stainless steel sensor housing for industrial environments. The model has been tested by TÜV NORD in accordance with DIN EN 61010-1: 2011-07. All switching points of the flow monitor for water are highly sensitive and infinitely adjustable for both liquids (0.03 ... 3 m/s) and gases (0.5 ... 20 m/s).

You will also find the evaluation unit NLSW®45-4 with relay output for monitoring the flow of liquids. This flow monitor for water has a switching output 1 NO/ 1 NC, which is suitable for installation in control cabinets. Matching the evaluation unit is the Sensor F6. A stainless steel sensor housing is available separately on request. One advantage of the flow monitor for water is its large measuring range for monitoring the flow of liquids (0.03 ... 3 m/s) and gases (0.5 ... 20 m/s). It also scores with a sensitive and infinitely adjustable switching point. This device has also been type-tested by TÜV NORD in accordance with DIN EN 61010-1: 2011-07.

Alternatively, we can supply you with the FlowGuard® FS400 for flow monitoring of liquid media with analog and switching output (4 ... 20 mA), which indicates the flow rate and contact closure via ten LEDs and is equipped with 2 control buttons for setting the switching point.

If you require a SIL1- or SIL2-classified device for flow monitoring, we look forward to being able to offer you a corresponding device in the near future - our developers are already working flat out to complete and certify the device.

Take a direct look at our flow monitors for water or contact our specialists directly if you have any questions or would like advice. Please contact us without obligation.

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