Low-flow meters are specialized devices designed for the precise measurement of very small flow rates. These flow meters are used in various industrial sectors where the exact dosing or monitoring of very small quantities of liquid is crucial.
We offer a wide range of low flow meters based on different measuring principles and therefore suitable for various applications. These flow meters are characterized by their high precision, reliability and durability. They are easy to install and require little maintenance, making them the ideal solution for demanding measuring tasks.
Advantages of DDM flow meters for very small quantities
- Simple integration
- High precision
- Long lifespan
The flow meters for very small quantities from DDM at a glance
Depending on the requirements and medium, you can choose between turbine flow meters, oval gear meters, ultrasonic flow meters and impeller flow meters. These flow meters are suitable for measuring various media, including water, oils, chemicals and other liquids. The selection of the optimum flow meter depends on factors such as the required measuring accuracy, the measuring range, the viscosity of the medium, the temperature and the pressure.
Turbine flowmeter for small flow rates from 0.06 l/min
Turbine flow meters are particularly well-suited for measuring small flow rates in clean media. They are characterized by their high measuring accuracy and fast response time. The turbine flow meters from DDM are available in various versions to meet the requirements of different applications. They have different protection classes so that they can also be used in harsh environments. Depending on the model, the turbine flow meters are equipped with different approvals such as NSF and are therefore suitable for the food industry.

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Thread: AN8; AN10; AN12
Measurement ranges: 0,1 to 100l/m
Repeatability: ± 0,025 % of reading
Temperature probe media exposed: Type T thermocouple
Datasheet : pdf | 314 KB
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Hose connection Ø: 9,8 to 32mm
Measurement range: 0,1 to 350l/min
Repeatability: ± 0,025 % of reading
Temperature probe media exposed: Type T thermocouple
Datasheet : pdf | 314 KB
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Oval wheel meter for small flow rates from 0.01 l/min
Oval gear meters are positive displacement flow meters known for their high accuracy and resistance to viscosity changes. They are particularly suitable for measuring small flow rates of liquids with high viscosity. The oval gear meters are available in various materials and designs to meet the requirements of different applications. Depending on the model, the oval gear meters are equipped with different approvals such as ATEX.

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Connection: 1/4″ BSP F or NPT F
Measurement range: 0,01 … 1,0l/min at 30cst oil; 0,1 … 1,0l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar, <700bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 253 KB
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Connection: 1/4″ BSP F or NPT F
Measurement range: 0,03 … 4,0l/min at 30cst oil; 0,15 … 4,0l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar, <700bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 261 KB
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Connection: 1/2″ BSP F or NPT F
Measurement range: 0,05 … 10,0l/min at 30cst oil; 0,5 … 10,0l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar, <700bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 274 KB
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Connection: 3/4″ BSP F or NPT F
Measurement range: 0,25 … 50,0l/min at 30cst oil; 2,5 … 50,0l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar, <700bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 240 KB
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Connection: 1″ BSP F or NPT F, R21.50, G1-11
Measurement range: 0,5 … 100,0l/min at 30cst oil; 4,0 … 100,0l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet : pdf | 233 KB
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Connection: 1 1/2″ BSP F or NPT F
Measurement range: 2 … 200l/min at 30cst Öl; 10 … 200l/min with water
Repeatability: ±0,1%
Output: Impuls NPN; voltage
Pressure Ranges: <10bar, <50bar, <400bar,
Temperature range: -20 – 80°C, -40 – 100°C, -40 – 150°C
Data sheet: pdf | 225 KB
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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 | 220 KB
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Ultrasonic flow meter for small flow rates from 0.002 l/min
Ultrasonic flow meters are non-contact devices, making them particularly suitable for measuring aggressive, corrosive, or abrasive media. They are characterized by their high measuring accuracy, simple installation and freedom from maintenance. The ultrasonic flow meters are available in different versions to meet the requirements of different applications. Depending on the model, the ultrasonic flow meters are equipped with different approvals, such as NSF and FDA.

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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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Connection: 1/8” & 1/4″ hose
Measurement ranges: 20 … 1000 ml/min & 100 … 5000 ml/min
Repeatability: ±0.1% plus ±0.02% FSD
Material of wetted parts: PFA hose with FDA approval
Output: Impuls (NPN or PNP); 4 – 20mA; 0 – 10V; 0 -5V; Display
Temperature range: -10 – 60°C
Data sheet: pdf | 1,003 KB
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Connection: ¼” BSP
Measurement range: 2 … 500ml/min to 0,1 … 15l/min
Repeatability: ±0.1% +0.005% FSD
Material of wetted parts: 316 and PEEK
Output: Impuls (NPN or PNP);
Data sheet: pdf | 643 KB
Manuel: pdf | 736 KB
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Impeller flow meter for small flow rates from 0.05 l/min
Impeller flow meters are ideal for measuring small flow rates of low-viscosity liquids. They are characterized by their compact design and good price-performance ratio. The impeller flow meters are available in different versions to meet the requirements of different applications. Depending on the model, the impeller flow meters are equipped with different approvals and protection classes and are therefore also suitable for sensitive applications.

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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 | 129 KB
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Hose connection Ø: 8 & 12mm
Measurement range: 0,05… 0,5 l/min to 0,50 … 15,0 l/min
Repeatability: 0,1%
Material of wetted parts: PVDF including NSF, customer-specific
Output: Impuls (NPN or PNP)
Temperature range: -25 … 60°C or -25 … 125°C
Data sheet: pdf | 244 KB
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Connection: 1/4″ BSPF, 1/4″ NPTF
Measurement range: 0,05… 0,5 l/min to 0,50 … 15,0 l/min
Repeatability: 0,1%
Material of wetted parts: PVDF or stainless steel
Output: Impuls (NPN or PNP)
Temperature range: -25 … 60°C or -25 … 125°C
Data sheet: pdf | 410 KB
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Connection: 1/2″ BSPF
Measurement range: 0,05… 0,5 l/min to 2,0 … 30,0 l/min
Repeatability: 0,1%
Material of wetted partsin contact with media: PVDF or stainless steel
Output: Impuls (NPN or PNP)
Temperature range: -25 … 60°C or -25 … 125°C
Data sheet: pdf | 270 KB
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Connection: 8mm & 13mm hose; ¼“ up to 1“ BSP
Measurement range: 0,5 l/min to 160,0 l/min
Repeatability: 0,1%
Material of wetted parts : PVDF, PVC, Brass or Stainless Steel
Output: Impuls
Temperature range : -15 up to 125°C
Data sheet FT2 hall effect: pdf | 245 KB
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Connection: 8mm & 13mm hose; ¼“ up to 1“ BSP
Measurement range: 0,02 l/min up to 160,0 l/min
Repeatability: 0,1%
Material of wetted parts : PVDF, PVC, Brass or Stainless Steel
Output: Impuls
Temperature Range : -10 to 80°C
Data sheet FT2 optical: pdf | 238 KB
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Flow meters for small quantities are used here
Low-volume flow meters are used across various industries, including:
- Chemical industry: dosing of chemicals, monitoring of reactions
- Pharmaceutical industry: dosing of medicines, filling of liquids
- Food industry: dosing of flavors, bottling of beverages
- Medical technology: dosing of medication, infusion systems
- Water treatment: dosing of chemicals, monitoring of water quality
- Laboratory technology: analysis of liquids, dosing of reagents
Flow measurement technology from a single source
In addition to flow meters, DDM Sensor Solutions also offers a range of complementary products that optimize flow measurement and control in customer-specific applications. These products include converters for converting the flow meter signals into standardized output signals and display devices for visualizing the measured flow rates.
Individual flow meters for small flow rates
DDM also offers customized flow meters that are precisely tailored to the individual requirements of the respective application. For example, properties such as the measuring range or the temperature range can be adapted to the specific requirements.
Maintenance and calibration of the flow meters
All flow meters from DDM Sensor Solutions are low-maintenance and durable. Regular calibration is recommended to ensure long-term measurement accuracy. DDM offers professional calibration services to ensure that the flow meters continue to function optimally. Maintenance of the flow meters is only necessary when the desired accuracy and repeatability are no longer achieved during calibration.
Get expert advice on small-quantity flow meters today!
Are you looking for the right flow meter for your application? Our team of experts will be happy to provide you with comprehensive and individual advice. We look forward to your inquiries and tasks