Leomi Instruments - FlowMeter Blog

  Within this blog, we will discuss the different types of thermal mass flowmeter technologies. Thermal mass flowmeters operate on the principle where a heat source is applied to the inlet of the mass flow meter and is then transmitted from one part of the device to another, increasing in temperature (gain an amount of q) based on its thermal resistance. The change in temperature as a function of time causes a corresponding change in thermal conductance (change in convective heat transfer coefficient h). As fluid flows through a pipe it changes its speed due to frictional forces and if there is a thermocouple placed at various points within this pipe can determine how much varying thermal power dissipation occurs within that length by relating it back to a known conduit’s temperature gradient. Let us discuss the types of thermal mass flowmeters: 1. INSERTION THERMAL MASS FLOW METER if we have large pipes and don’t want to cut them, then maybe we can use an insertion thermal mass fl...

Choosing a flowmeter that creates low permanent pressure loss is most important in Compressors & Blowers requirements can reduce energy loss, increase efficiency & saves money. Airflow rate measurement & control is utmost in the textile, automobile, steel and power, chemical & pharmaceuticals process. Selecting an appropriate flow measurement technique can be a daunting task. If we are aware of technologies that are suitable for a particular application, minimizing energy costs can help narrow the choice. Pressure drop loss is a major concern as example Orifice flow meter has approx 2psi -3psi pressure loss which is equal to 1-1.5% energy loss. LEOMI thermal mass (calorimetric) flow meters work on the physical principle of thermal dispersion from a heated element to the ambient medium (e.g. air or gases). And it is the proven technology that provides great savings in energy costs by almost No permanent pressure loss & high turndown ratio to the plant operators hence ...

APPLICATION Aeration air flow rate monitoring for control of Dissolved Oxygen levels in Effluent primary treatment plant. CUSTOMER India’s biggest Pharmaceutical drugs manufacturing group, Gujarat. PROBLEM An Integrated pharmaceutical plant with various departments such as API bulk drugs, tablets, liquid syrup manufacturing facility has a variable load of effluent water with a wide range of toxic organic and inorganic effluent into the effluent treatment plant for processing.  This poses a challenge to maintain DO levels with respect to aeration air injection for BOD,COD & TOC control as per regulatory norms for resuage. Air Blowers are operated on a fixed pressure control loop which creates a problem on inefficient DO controls. DO is a function of air flow not pressure.  Efficient Dissolved Oxygen ( DO) control is a challenge to obtain without accurate aeration air flow metering. Ineffective DO control means loss of energy and insufficient bacterial growth for optimum BOD...

  Thermal mass flow meters can be used in beverage production and chilling applications to measure the flow rate of fluids such as water, juice, and other beverages. In these applications, the flow meter is typically installed in a pipe or tube that carries the fluid. There are several benefits to using a thermal mass flow meter in beverage production and chilling applications: Accuracy:  Thermal mass flow meters are known for their high accuracy, which is important for accurately measuring the flow rate of fluids in a beverage production process. Low-pressure drop:  Thermal mass flow meters have a low-pressure drop, which can be important in applications where the pressure of the fluid is a concern. Versatility:  Thermal mass flow meters can be used to measure a wide range of fluids, including water, juices, and other beverages. No moving parts:  Thermal mass flow meters do not have any moving parts, which makes them low maintenance and less prone to wear and t...

  Thermal mass flowmeters are devices used to measure the flow rate of gases or liquids by measuring the heat transfer between the fluid and a sensor. They have several advantages compared to other types of flowmeters: High accuracy:  Thermal mass flowmeters are known for their high accuracy, especially in applications where the flow rate is constant or changing at a slow rate. Wide rangeability:  Thermal mass flowmeters can measure a wide range of flow rates, making them suitable for a variety of applications. Low-pressure drop:  Thermal mass flowmeters have a low-pressure drop, meaning they do not significantly restrict the flow of the fluid. This can be important in systems where pressure drop is a concern. Good repeatability:  Thermal mass flowmeters tend to have good repeatability, meaning they produce consistent results when measuring the same flow rate multiple times. No moving parts:  Thermal mass flowmeters do not have any moving parts, which makes...

  DIFFERENT TYPES OF GAS FLOW METERS Thermal mass flow meters  — Thermal mass flow meter s, thermal dispersion or immersible mass flow meters, or gas flow meters, are a type of instrument for measuring the rate at which fluid (usually air) passes through a pipe. The thermal part refers to the fact that the device is heated and differential (not absolute) in pressure across it will cause flow because of this temperature gradient, i.e., if the side without a pressure difference is hotter than the other side, then the flow will occur from hot to cold. Differential Pressure Based Flow Meter  — Differential Pressure flow meters measure velocities in fluids by reading the pressure loss across a pipe constriction. These meters can employ laminar plates, nozzles, or Venturi tubes to create an artificial constriction. Coriolis flowmeter  — Coriolis mass flow meters are very useful to have around. It’s helpful when you have a large amount of liquid or even gas that needs to be...

  PROVIDINGFLOW METER TECHNOLOGY WITH IN-HOUSE CALIBRATION       The global flow meter manufacturing industry grew to $8.9 billion in 2020, and it is projected to grow at a CAGR of 5.70 percent till FY2028. The market in India is also expected to see considerable growth due to developments in process automation in various industry core sectors such as Power, water management, chemicals, steel & cement, and more.The global flow meter manufacturing industry grew to $8.9 billion in 2020, and it is projected to grow at a CAGR of 5.70 percent till FY2028. The market in India is also expected to see considerable growth due to developments in process automation in various industry core sectors such as Power, water management, chemicals, steel & cement, and more.The global flow meter manufacturing industry grew to $8.9 billion in 2020, and it is projected to grow at a CAGR of 5.70 percent till FY2028. The m...