product overview
Flow meters
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Accurate flow measurement is essential for any reliable process control. Without high-quality flow meters, a stable and efficient process is simply not possible. Our flow meters provide exactly that assurance.
With advanced measurement principles, robust construction, and low-maintenance designs, they guarantee stable and reproducible measurements under all conditions. Whether it involves water, chemicals, gases, or abrasive media—our solutions help you increase efficiency, minimize downtime, and monitor the quality of your end product.
Choose reliable flow measurement. Choose continuity, control, and reliability in every process.
productoverview
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JUMO flowTRANS MAG H20
JUMO flowTRANS MAG H20
Magnetic inductive flow meters
A magnetic inductive flowmeter works on the basis of Faraday's law. When an electrically conductive medium flows through a magnetic field, a voltage is induced that is directly proportional to the flow velocity of the medium. The flowmeter creates a magnetic field across the pipe; the medium (an electrically conductive fluid) flows through the field, and the electrodes in the pipe measures the induced voltage.
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recommendationTable
406065
406062
406063
406064
406010
406011
ultrasonic
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JUMO flowTRANS US W02
JUMO flowTRANS US W02
Ultrasonic flow meters
Ultrasonic flowmeters operate on the ultrasonic flow measurement principle: they measure flow by comparing the difference in transit time required for ultrasonic pulses to travel with and against the flow of the fluid. Combined with the pipe’s cross-sectional diameter, the volumetric flow rate is calculated.
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recommendationTable
406050
406051
paddlewheel
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JUMO flowTRANS PW I01
JUMO flowTRANS PW I01
Paddle wheel flow meters
Paddle wheel flowmeters measure the flow rate of liquids using a built-in rotor (paddle wheel) that is driven by the liquid flow. Magnets on the wheel activate a sensor that generates electrical pulses, with the frequency directly corresponds to the flow rate. It is a reliable, mechanical method for clean, low-viscosity liquids.
false
recommendationTable
406020
pitottube
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JUMO flowTRANS DP P01/P02/P03/P04
JUMO flowTRANS DP P01/P02/P03/P04
Pitot tube flow meter
A pitot tube flow meter measures the flow velocity of a gas or liquid by determining the difference between the total pressure. The pressure measured when the flow comes to a standstill at the tube’s orifice and the static pressure, the pressure of the flow without the velocity component. The pressure difference between these two is proportional to the square of the flow velocity.
false
recommendationTable
409601
diafragma
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JUMO flowTRANS DP R01/R02
JUMO flowTRANS DP R01/R02
Diaphragm flow meters
A diaphragm flow meter measures the flow through a narrow section (diaphragm plate) in the pipe. When the liquid or gas flows through this narrow section, a pressure difference is created before and after the diaphragm plate. According to Bernoulli’s principle, this pressure difference is directly proportional to the square of the flow velocity.
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recommendationTable
409602
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faq
Frequently asked questions
Here you'll find answers to the most frequently asked questions about flow meters
What is a magnetic inductive flow meter?
How does a magnetic inductive flow meter work?
What does the abbreviation MID stand for?
What are the key features of a MID flow meter?
What is the measuring principle behind ultrasonic flow measurement?
How does an untrasonic flow meter work (transit-time principe)?
What is an alternative to the transi-time principle?
What are the key features of an ultrasonic flow meter?
What is the measuring principle of a paddle wheel flow meter?
How does a paddle wheel flow meter work?
What are the key features of a paddle wheel flow meter?
What is the measuring principle of a paddle wheel flow meter?
How does a paddle wheel flow meter work?
What are the key features of a paddle wheel flow meter?
What is the measuring principle of a diaphragm flow meter?
How does a diaphragm flow meter work?
What are the key features of a diaphragm flow meter?
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faq1
What is a magnetic inductive flow meter?
A magnetic inductive flow meter is a flow meter that operates based on Faraday's law. When an electrically conductive medium flows through a magnetic field, a voltage is induced that is directly proportional to the flow velocity of the medium.
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faq2
How does a magnetic inductive flow meter work?
The flow meter creates a magnetic field across the pipe; the medium (the electrically conductive fluid) flows through this field, and the electrodes in the pipe wall measure the induced voltage.
The measured voltrage is:
- proportional to the velocity of the fluid
- and, together with the pipe diameter, is used to calculate the columetric flow rate (m³/h)
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faq3
What does the abbreviation MID stands for?
In the case of a MID flow meter, the abbreviation MID stands for Magnetic-Inductive Flow meter (often referred to as a Magmeter).
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faq4
What are the key features of a MID flow meter?
Key features of a MID flow meter:
- Works only with conductive media (expressed in μS/cm)
- No moving parts, accurate and low-maintenance
- Widely used in water, waste water, chemicals and food applications
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faq5
What is the measuring principle behind ultrasonic flow measurement?
An ultrasonic flow meter determines the flow velocity of a fluid by using ultrasonic sound. There are two main principles, but the most commonly used is the transit-time principle.
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faq6
How does an ultrasonic flow meter (transit-time principle) work?
Two sensors take turns transmitting ultrasonic pulses to each other, one with the flow and one against the flow. Because the sound waves travel faster with the flow and slower against the flow, a time difference arises between the two pulses. This difference is directly proportional to the flow velocity of the medium. By combining this velocity with the pipe diameter, the flow can be calculated.
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faq7
What is an alternative to the transit-time principle?
An alternative to the transit-time principle is the Doppler principle, which is often used in media containing particles or air bubbles. In the Doppler principle, the ultrasonic sound waves reflect off these particles, and the resulting frequency shift indicates the flow velocity.
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faq8
What are te key features of an ultrasonic flow meter?
Key features of an ultrasonic flow meter:
- Non-contact (clamp-on) or inline
- No obstruction, no pressure loss
- Suitable for clean (transit-time) and contaminated media (Doppler)
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faq9
What is the measuring principle of a paddle wheel flow meter?
A paddle wheel flow meter measures the flow velocity of a fluid using a rotating paddle wheel that is in contact with the flow.
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faq10
How does a paddle wheel flow meter work?
The fluid flows through the pipe and drives the paddle wheel. The rotational speed of the wheel is directly proportional to the fluid's flow velocity. A sensor (usually magnetic of Hall-effect) detects each rotation as a pulse. The number of pulses per unit of time is converted to flow rate.
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faq11
What are the key features of a paddle wheel flow meter?
Key features of a paddle wheel flow meter:
- Simple, inexpensive and suitable for clean, low-viscosity liquids
- Provides a linear signal at most flow rates
- Less suitable for contaminated media or high viscosity
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faq12
What is the measuring principle of a Pitot tube flow meter?
A Pitot tube flow meter measures the flow velocity of a gas or liquid by determining the difference between the total pressure - the pressure measured when the flow comes to rest against the opening of the tube - and the static pressure - the pressure of the flow without the velocity component. The pressure difference between these two is proportional to the square of the flow velocity.
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faq13
How does a Pitot tube flow meter work?
The front of the Pitot tube captures the flow and measures total pressure. Slide ports measure static pressure.
The difference Δp = ptot − pstat gives the velocity:
image
formule pitot meetprincipe
formule pitot meetprincipe
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landscape
By combining the velocity with the pipe diameter, the system can determine the flow rate.
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faq14
What are the key features of a Pitot tube flow meter?
Key features of a Pitot tube flow meter:
- Inexpensive, simple and low-maintenance
- Low pressure drop
- Suitable for higt velocities, especially in air/ventilation applications
- Less accurate at low velocities or in turbulent flow conditions
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faq15
What is the measuring principle of an orifice flow meter?
An orifice flow meter measures the volumetric flow rate through a constriction (orifice plate) in the pipe. When the liquid or gas flows through this constriction, a pressure difference is created before and after the plate.
According to Bernoulli's principle, this pressure difference is directly proportional to the square of the flow velocity.
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faq16
How does an orifice flow meter work?
The liquid or gas flows through a pipe containing a plate with a circular opening; as the flow passes through the constriction , the flow velocity increases, causing the pressure downstream of the constriction to drop. The upstream pressure and downstream pressure are measured here:
- Upstream pressure (P₁)
- Downstream pressure (P₂)
The pressure difference ΔP = P₁ − P₂ is converted to velocity and then to flow rate.
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faq17
What are the key features of a diaphragm flow meter?
Key features of a diafragm flow meter:
- Simple, robust and cost-effective
- Suitable for high pressures and temperatures
- Higher pressure drop than other flow meters
- Requires a conductive or non-conductive liquid/gas → very versatile
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relatednews
Related news and information
downloads
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JUMO flowTRANS MAG H20
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