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flow control and measurement

Controlling and measuring the flow rate of fluids through pipes and tanks is important for the optimal use of cooling and heating equipment, heat exchangers, etc. in HVAC industry. In the following, the technical specifications, brands, how to choose and the price of all types of flow control and measurement equipment for wholesale purchasing are presented.

Choosing and Analyzing flow control and measurement equipment

If you want to use flow control and measurement equipment to measure the amount of flow rate of fluids passing through pipes and tanks and you, do not know what flow control and measurement equipment are better, with what measurement accuracy, brand, price, and Use specifications, stay with us in the rest of this article to answer all your questions regarding the purchase price, technical specifications and the best types of flow control and measurement equipment you need.
One of the needs in various industries is to measure the flow rate of fluids through pipes and tanks. A flowmeter or flowmeter is a device that measures the flow rate of a fluid (water, oil, acid, fuel, gas, steam, etc.). Flowmeters include sensors, transducers, and transmitters. To measure the amount of fluid, the sensor first senses the fluid and sends it to the transducer; the transducer converts this physical quantity into an electrical pulse or a mechanical quantity that can be measured. Finally, the transmitter receives this quantity and converts it into a signal suitable for the control system. he does. In this article, we have tried to briefly introduce you to the types of flow control and measurement tools and their functions.

choosing a flowmeter, consider the following factors

  • fluid density
  • Electrical conductivity
  • Fluid working temperature
  • Fluid working pressure
  • Fluid viscosity
  • Fluid friction with the passage channel
  • Acidic or non-acidic

flow control and measurement

Types of flowmeter

  •  Speed flowmeter
  • Mass flowmeter
  • Volume flowmeter
  • Inferential flowmeter

speed flowmeters

  • Ultrasonic flowmeter

In this method, the flowmeter sends ultrasonic waves with a specific frequency to the fluid, and in return, by measuring the change in the frequency of the return waves, it calculates the speed and, as a result, the flow rate of the fluid.


flow control and measurement - ultra sonic

  • Turbine Flowmeter

In this method, by measuring the rotation speed of the turbine blades when the fluid flow is passing and its ratio with the speed of the fluid passing through, they calculate the volume flow of the fluid.

flow control and measurement - internal schematic flow control and measurement - turbin
  • Electromagnetic Flowmeter

In this method, an electromagnet creates a magnetic field perpendicular to the flow; then, by measuring the voltage proportional to the speed created in the conducting fluids, it calculates the volume flow. In this method, attention should be paid to the minimum fluid conductivity and fluid speed.

magnetic - flow control and measurement

  • Vortex flowmeter

In this method, electric pulses are produced by creating an obstacle in the way of the fluid, and in this way, the fluid speed and volume flow are calculated.



vertex - flow control and measurement

mass flowmeters

  • Coriolis mass flowmeter

In this method, they measure the mass flow based on the Coriolis acceleration phenomenon. In this way, a flexible tube is placed in the fluid path, and by measuring the Coriolis force resulting from the passing flow, which is caused by the oscillation perpendicular to the direction of the fluid flow passing through this tube, the mass flow rate of the fluid is measured.


flow control and measurement

  • Thermal mass flowmeter

In this method, the basis of the work is based on parameters such as pressure, density, and adhesion. The transmitter calculates the mass flow based on the thermal energy supplied to the heater and the temperature difference measurement between two temperature sensors inside the fluid tank. These flowmeters are not suitable for acidic fluids due to the possibility of sensor wear.


flow control and measurement - heater

inferential flowmeters

  • Differential Pressure Flowmeter

In this method, by placing an obstacle in the path of the fluid, the amount of pressure drop or difference is measured, and the mass flow of the fluid is calculated.


flow control and measurement - pressure

  • Variable area flowmeter

These flowmeters include a conical metal or glass tube containing a float to move according to the flow rate of the fluid. With the movement of this float, the flow rate of the fluid is obtained, and the mass flow of the fluid is calculated.


flow control and measurement

volume flowmeters

  • Positive Displacement Flowmeter

In these flowmeters, there is a chamber that divides the flow into smaller units, which calculates the total flow by counting the number of volumetric units transferred. Their flowmeters have different types: arm flowmeters, disc flowmeters, rotary flowmeters, piston flowmeters, and vane flowmeters.

Types of the flow meter or volumetric flowmeter

Purchase order and guarantee of flow control and measurement equipment

  • In the flow control and measurement group of the reference site (DamaTajhiz), you can view the information and prices of various types of flowmeters, flow-switches, transmitters, flow transmitters, etc. from reputable brands such as Anders Hauser, Rosemont, Honeywell, Corone, etc., for reviewing, selecting and bulk buying.
  • Considering that all the products on the website (DamaTajhiz) are provided with the original warranty if you bulk buy any flow control and measurement equipment offered on the website (DamaTajhiz), all the special sales discounts of each of the brands, such as Anders Hauser, Rosemont, Honeywell, Crowne, etc. are included in the order price of respected buyers. (Ask Damatajhiz experts for the specialized sales of flow control and measurement equipment)
  • After reading the above, if you have any more questions to decide to buy any kinds of flow control and measuring equipment in bulk, you can contact us through email or whatsapp to get advice and ask your questions.

Business license of DamaTajhiz
Trademark registration certificate - Stewardship business license from the Virtual Business Union - Business license from the heating and air conditioning equipment industry
Exhibition of facilities of DamaTajhiz

The presence of DAMATAJHIZ in international exhibitions of construction facilities and cooling and heating systems

See more, and choose a better

Dear user: If you make an online purchase of Dubai Control and Measurement Group products from the DAMATAJHIZ reference site, you will have the possibility of delivery within 4 to 6 working hours in Tehran (and 2 working days for other cities).

In addition to the valid business license from the heating and air conditioning trade union, the specialized group of DAMATAJHIZ has an electronic trust symbol and started its store site in 2013 in the head office of Tehran.

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IT Liquid Flow switch DB50MI

IT Liquid Flow switch DB50MI

  • SPDT sensor
  • Connection material: brass
  • Connection size: 3/8 to 2 inches
  • Maximum working pressure: 25 bar
  • Degree of protection: IP65 class II
Price inquiry
  • Out-of-Stock
IT Liquids Flow switch DB40MI

IT Liquids Flow switch DB40MI

  • Contacts: Microswitch with SPDT contacts
  • Switch capacity :5 A, 250 V AC
  • Media temperature : -20…+110°C
  • Storage temperature : -20…+70°C
Price inquiry
  • Out-of-Stock
IT Liquids Flow switch DB32MI

IT Liquids Flow switch DB32MI

  • SPDT sensor
  • Connection material: brass
  • Connection size: 3/8 to 2 inches
  • Maximum working pressure: 25 bar
  • Degree of protection: IP65 class II
  • Fluid: water, water + 50% glycol
  • Fluid pressure reduction: 0.01 bar
  • Blade material (pedal): 316L stainless steel
  • Electrical specifications: 5 amps, 250 volts AC
  • Fluid temperature: -20...110+ degrees Celsius
  • Flow rate: 5 to 6 ... 70 to 90 liters per minute of water
Price inquiry
  • Out-of-Stock
IT Liquid Flow switch DB25MI

IT Liquids Flow switch DB25MI

  • SPDT sensor
  • Connection material: brass
  • Connection size: 3/8 to 2 inches
  • Maximum working pressure: 25 bar
  • Degree of protection: IP65 class II
  • Fluid: water, water + 50% glycol
  • Fluid pressure reduction: 0.01 bar
Price inquiry
  • Out-of-Stock
IT Liquids Flow switch Model DB15MI

IT Liquids Flow switch Model DB15MI

  • Switch capacity: 5A 250v AC
  • Storage humidity: RH95%
  • Maximum pressure: 25 bar, 2500 kPa
  • Pressure drop in QMAX: 0.01bar, 1KPA
  • Tolerance: ± 15%
Price inquiry
  • Out-of-Stock
MADECO Glass flowmeter or rotameter MDRT10

MADECO Glass flowmeter or rotameter MDRT10

  • To measure the flow of liquids with low viscosity
  • Maximum working pressure: up to 8 bar
  • Ambient temperature range: -10~55 degrees Celsius
  • Maximum fluid temperature: 65 degrees Celsius
  • Accuracy: 4%
Price inquiry
  • Out-of-Stock

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