Rosemount 8800D Flow Meter

Rosemount 8800D flow meter is a common electromagnetic flow meter, developed by Emerson Corporation of the United States, it is specially designed for gas, liquid and steam flow measurement, and is suitable for many different industries and application scenarios. The flow meter is measured in a non-invasive way without disturbing the fluid flow. It can accurately measure the volume flow and mass flow of various fluids. It has the characteristics of high precision, high stability and high reliability.

Features

1. Use digital signal processing technology (DSP) to ensure the accuracy and stability of the measurement. The measurement accuracy is as high as ±0.65%.

2. The vortex flow meter has no mechanical moving parts, so it is more suitable for harsh environments, has a longer service life and is easy to maintain.

3. Suitable for medium measurement under high temperature and high pressure conditions, the temperature range is -196 °C ~ 649 °C, and the pressure resistance is up to 40 MPa.

4. It can measure various fluids such as gas, liquid and steam, and can meet various application requirements.

5. Two sensors are used for complementary calculation to improve the measurement accuracy and increase the stability and reliability of the application.

6. The flow meter is easy to install, has high reliability, and saves operating costs

7. Support multiple output signal modes, easy to be compatible with various on-site communication and control systems.

Working Principle

The measurement principle of the vortex flow meter is based on the phenomenon of vortex flow when the fluid flows through a fixed obstacle. The fluid forms a vortex street downstream of the obstacle. The frequency of these vortex streets is proportional to the flow velocity. By detecting the frequency of the vortex street, the flow velocity of the fluid can be obtained to calculate the flow rate.

Rosemount 8800D  Flow meter uses a sensor and electronic transmitter system to achieve vortex frequency detection and signal processing. The sensor converts the vortex frequency into an electrical signal, and then processes and converts it through digital signal processing technology (DSP), and finally outputs 4-20mA or other types of flow signals.

Technical Parameters

Rosemount 8800D Flow meter's sensor consists of two separate electrodes that measure the interaction of electrons and magnetic fields to determine the velocity and flow rate of a fluid. The flow meter adopts digital signal processing technology, which can realize on-site configuration and parameter setting, supports multiple communication protocols, and can also be used with other equipment.

Measuring Ranges

Rosemount 8800D Vortex Flow meter has a very wide measurement range and can measure gases, liquids and steam. The specific measurement range depends on the flow meter specification, medium state and fluid characteristics. Generally speaking, the measurement range of gas is relatively large, followed by liquid, and the measurement range of steam is the smallest.

Installation and Maintenance

1. Installation: When installing, pay attention to ensure that the installation direction of the flow meter is consistent with the fluid flow direction. The vortex flow meter has high requirements on the straight pipe section, and it should be ensured that there is enough straight pipe length in the upstream to eliminate the turbulence and vortex of the fluid flow and ensure the correct operation of the flow meter.

2. Maintenance: Since the Rosemount 8800D vortex flow meter has no moving parts, it basically requires no maintenance. However, it is still necessary to regularly check the appearance, connections and sealing status of the equipment during used to ensure normal operation.

Rosemount 8800D flow meter are widely used in flow measurement and process control. It can accurately measure a variety of different liquids, gases and vapors, including acidic solutions, saturated steam, hot oil, hydrogen and liquefied gas, etc. In addition, the flow meter also has the advantages of corrosion resistance, high temperature resistance, high pressure resistance, low flow measurement and zero point stability of the flow meter.

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