TILI Automation

 Turbine Flow Meter is a volumetric measuring turbine type. The flowing fluid engages the rotor causing it to rotate at an angular velocity proportional to the fluid flow rate. The angular velocity of the rotor results in the generation of an electrical signal (AC sine wave type) in the pickup. The summation of the pulsing electrical signal is related directly to total flow. The frequency of the signal relates directly to flow rate. The vaned rotor is the only moving part of the flow meter. Turbine Flow Meter The Turbine flow meter (axial turbine) was invented by Reinhard Woltman and is an accurate and reliable flow meter for liquids and gases. It consists of a flow tube with end connections and a magnetic multi bladed free spinning rotor (impeller) mounted inside; in line with the flow. The rotor is supported by a shaft that rests on internally mounted supports.  The Supports in Process Automatics Turbine Flow Meters are designed to also act as flow straighteners, stabilizing...

Oval gear meters are traditional, mechanical, positive displacement (PD) flow meters, first invented more than 50 years ago by OVAL Corporation of Japan and now widely used for flow metering applications. Oval gear meters measure flow by employing a geared rotor to pass known volumes of a fluid through a housing. Oval Gear Meter A very precisely adjusted gear pair within the casing forms the measuring element. The in flowing medium causes the gear pair to rotate. The rotary motion is scanned by contactless sensors. Since each individual tooth generates a pulse, this results in a very high resolution. Consequently, even the smallest volumes can be measured or dosed precisely. The measurement unit contains two pick-offs that are circumferentially offset by ? of a tooth pitch to generate a 2 channel flow-proportional frequency signal. Suitable processing of the signal provides an greater resolution and the option to identify the flow direction. Basically, the measurement accuracy increase...

 Thermal mass flow meters employ the thermal dispersion principle whereby the rate of heat absorbed by a fluid flowing in a pipe or duct is directly proportional to its mass flow. In a typical thermal flow meter gas flowing over a source of heat absorbs the heat and cools the source. As flow increases, more heat is absorbed by the gas. The amount of heat dissipated from the heat source is proportional to the gas mass flow and its thermal properties. Therefore, measurement of the heat transfer supplies data from which a mass flow rate may be calculated. Thermal Mass Flow Meter Thermal mass flow meters are designed to accurately monitor and measure mass flow (as opposed to measuring volumetric flow) of clean gases, a parameter that is not temperature dependent. Therefore, the thermal mass flow meter does not require a correction for changes in gas temperature, pressure, viscosity and density. Thermal Mass Flow Meter Advantages *Measure gas mass flow rate directly *Suitable for applic...

 Vortex Meters can be used for a wide range of fluids, i.e. liquids, gases and steam. They are to be seen as first choice, subject to verification to cover the requirements of a particular application.  Vortex meters are essentially frequency meters, since they measure the frequency of vortices generated by a “bluff body” or”shedder bar”. Vortices will only occur from a certain velocity (Re-number) on-wards, consequently vortex meters will have an elevated zero referred to as the “cut-off” point. Before the velocity becomes nil, the meter output will be cut to zero. At a certain back-flow (above cut off point) some vortex meters could produce an output signal, which could lead to a false interpretation.   Vortex meters are actual volume flow meters, like orifice meters. These being intrusive meters like orifice meters, will cause the pressure drop as flow is increased, resulting in a permanent loss. consequently, liquids near their boiling point, could introduce cavitatio...

 Mass flow meters are the types of flow meters which are mainly employed in mass-related processes such as chemical reactions, heat transfer, etc. In all these processes, accurate measurement of flow is the prerequisite. There are numerous types of mass flow meters available in the industry. However, the most widely used type is the Coriolis meter. Another type available is thermal type mass flow meters Coriolis Mass Flow Meter A Coriolis meter works on Coriolis Effect, hence it is named so. Coriolis meters are considered to be true mass meters since they tend to measure the mass rate of flow directly while other flow meter technologies measure volumetric flow. Since mass does not change, no adjustments are needed for varying fluid characteristics. Hence, a Coriolis meter operates in linear fashion. These types of meters exist in variety of designs. The most common type of unit includes 1.a U-shaped flow tube 2.a sensor assembly 3.an electronics unit In this meter unit, the liquid ...

 Coriolis flow meters represent the state-of-the-art in mass flow measurement. While incredibly versatile and accurate, their internal operation can be difficult to understand. Coriolis Flow Meters Put into very simple terms, a Coriolis flow meter works by shaking one or more tubes carrying the flowing fluid, then precisely measuring the frequency and phase of that shaking. The back-and-forth shaking is driven by an electromagnetic coil, powered by an electronic amplifier circuit to shake the tube(s) at their mechanical resonant frequency. Since this frequency depends on the mass of each tube, and the mass of the tubes depends on the density of the fluid filling the fixed volume of the tubes, the resonant frequency becomes an inverse indication of fluid density (Note 1) , whether or not fluid is flowing through the tubes. As fluid begins to move through the tubes, the inertia of the moving fluid adds another dimension to the tubes’ motion: the tubes begin to undulate (Note 2) , twisting slightly i...

 An ultrasonic flow meter is a meter that measures the flow by detecting the action of fluid flow on an ultrasonic beam (or ultrasonic pulse). Features: 1.Easy to carry; 2. maintenance; 3.Can only be used to measure cleaning liquids; 4.Not subject to pipe diameter restrictions; 5.No flow obstruction measurement, no additional pressure loss. Fluid velocity is measured by sending an ultrasonic pulse from an upstream transducer to a downstream transducer and back again. The measured difference in the amount of time that each pulse takes to traverse the pipe is directly proportional to the mean fluid velocity. ultrasonic flow meters use this measured velocity to calculate the liquid flow rate based on user-entered information about the process application. Ultrasonic Flow meters Advantages: *Ultrasonic meters are made up of no moving parts. *They experience no pressure loss. *They endow with maintenance-free operation. It is a key advantage as compared to     conventiona...