Leomi Instruments - FlowMeter Blog

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...