DDM Sensors offers a wide range of flow meters for various applications with water. The devices are characterized by their precision, small size and high quality. The flow meters are ideal for measuring the flow of small quantities of water in various applications.
Our flow sensors for water at a glance
Our water flow meters are designed for precision measurement in compact installation spaces.
Turbine flow meter
The turbine flow meters in the VCT and FLT series are ideal for compact installation spaces and high process pressures. They feature a wetted temperature sensor, allowing simultaneous measurement of flow and temperature. The measuring range extends from 0.05 to 1200 liters per minute. Process connections are available in threaded or hose connection versions. A digital frequency signal with TTL level is generated as the output signal. When combined with a flow computer, measurement accuracy can be further improved, achieving a deviation of less than 0.1% of the measured value.
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Thread: AN8 bis AN32; M18 bis M52
Measurement ranges: 0,06 to 1200l/m
Repeatability: ± 0,025 % of reading
Temperature measuring point: Type T thermocouple
Datasheet : pdf | 202 KB
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Impeller flow meter
Impeller flow meters are ideal for measuring low flow rates of water and other low-viscosity liquids. The NSF certification of the 800 series allows its use in the food and beverage industry. The measuring range extends from 0.05 to 30 liters per minute, with temperature tolerances up to 125°C or 60°C, depending on the model. The 900 and 1000 series are designed for process pressures up to 40 bar. Typical applications include dosing of cleaning concentrates in process technology and measuring FE and demineralized water.
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Hose connection Ø: 3/8“
Measurement range: 0,6 – 10 l/min
Repeatability: 0,1%
Material of wetted parts: PVDF including NSF
Output: Impuls (NPN or PNP)
Temperature range: -25 to 125°C
Data sheet: pdf | 200 KB
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Ultrasonic flow meter
Ultrasonic flow meters are characterized by their precision and flexibility. As they work without rotating parts, they are particularly suitable for high-purity media and applications where contamination is to be avoided. The measuring range is between 0.002 and 20 liters per minute. Our Metraflow model is a non-contact measuring system with a continuous PFA tube. Ultrasonic flow meters are ideally suited for FE water measurements in laboratory and measurement technology as well as dosing in the medical sector and can also measure demineralized water with high accuracy.
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Connection: 3/8” John Guest, 1/2” BSP, 1/2” NPT
Measurement range: 2 … 500ml/min to 0,1 … 20l/min
Repeatability: ±0.1% (25 to 100% v.MB); ±0.5% (< 25 v.MB)
Material of wetted parts: PEEK / 316 ; PEEK / Borosilikatglas
Output: Impuls (NPN or PNP); 4 – 20mA; 0 – 10V; 0 -5V; Display
Temperature range: -10 – 60°C, -10 – 110°C
Data sheet: pdf | 1 MB
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Oval gear meter
Oval gear meters are positive displacement flow meters, ideal for measuring water and other fluids. DDM Sensors offers various models to meet different application requirements. The measuring range for water varies from 0.01 to 500 liters per minute, depending on the model. Available connection options include BSP F and NPT F thread connections. The output signal is available as pulse NPN or PNP. Oval gear meters are widely used in test benches, production facilities, and laboratory technology.
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Connection: 2″ BSP F or NPT F
Measurement ranges: 5 … 500l/min at 30cst oil; 20 … 500l/min with water
Wiederholbarkeit: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <50bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 533 KB
excl. 19% VAT plus shipping costs
Application Areas for Water Flow Meters
The flow meters from DDM Sensors are used in various application areas:
Automotive Industry
Flow meters play a crucial role in cooling water measurement in the automotive industry, especially in test environments and production processes. Here are the most important areas of application and modes of operation:
- Engine test benches: Flow meters are used to monitor the coolant flow and ensure that engines do not overheat during test runs. This is essential for performance and endurance tests.
- Climate test benches: The cooling circuit is closely monitored to simulate different operating temperatures in order to test the efficiency of cooling systems.
- Production lines: During the production of engines or cooling modules, flow meters are used to ensure that cooling systems are correctly filled and sealed.
Laboratory & Measurement Technology
Flow meters for measuring FE (demineralized) water are used in various industrial and technical applications. Due to the special properties of this water, in particular its low conductivity and potential corrosiveness, suitable measuring methods and materials must be used.
Food Industry
NSF-approved flow meters are frequently used in the food industry for precise dosing of concentrates to ensure consistent product quality and optimum recipe accuracy. These flow meters are used in particular in beverage production, in the processing of syrups, flavors or additives as well as in the dairy and brewing industries. The flow meters from DDM Sensors also have NSF approval and offer a reliable solution for companies that rely on maximum accuracy and food safety.
High precision for your application
The flow meters from DDM Sensors are characterized by their high precision, which makes them an ideal solution for demanding measuring tasks. The achievable precision depends on the selected measuring principle and the configuration of the system.
- Repeatability: up to ±0.1%
- The high repeatability ensures that very similar results are always achieved for repeated measurements under the same conditions. This is particularly important for applications where consistent and reliable measured values are required.
- Measuring accuracy: up to 0.25 % (up to 0.1 % when using a flow computer)
- In conjunction with a downstream flow computer, accuracies of up to 0.1 % can be achieved with a measuring range spread of 1:100.
- The high measuring accuracy is ensured by careful calibration of the flow meters. DDM Sensors has its own calibration laboratory equipped with state-of-the-art technology. This makes it possible to precisely calibrate the flow meters for a wide range of measuring media and applications.
- To ensure long-term measurement accuracy, we recommend regular calibration of the flow meters.
100% Compatibility with Your System
The flow meters from DDM Sensors are compatible with existing systems and are supplied pre-calibrated. In addition, we also offer customized solutions that are individually tailored to the customer’s requirements. Depending on requirements, various output signals are available, including pulse signals, analog and digital signals. In addition, various connection options enable flexible integration into different system environments, ensuring seamless integration into existing processes.
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