The installation and maintenance of VEGA level transmitters are key steps to ensure their accurate and stable operation. The following is based onVEGA liquid level transmitterInstallation and maintenance guidelines compiled based on general characteristics and industry best practices:

1、 Installation steps

1. Confirm the model and parameters:

-VerifyVEGA liquid level transmitterWhether the model is consistent with the design requirements, including range, accuracy, output signal, process interface, process material, electrical interface, explosion-proof level, etc.

-Check if the medium temperature, pressure, density, corrosiveness, etc. are within the transmitter specifications.

2. Choose installation location:

-The liquid level transmitter should be installed at a position that can truly reflect the average liquid level inside the container.

-Avoid installation near liquid flow impact, vortices, dead zones, or near inlet/outlet pipes, and maintain sufficient distance.

-The installation location should be away from high temperature, vibration, corrosive gases, and strong electromagnetic interference sources.

3. Installation direction and method:

-The liquid level transmitter should be installed vertically to ensure measurement accuracy.

-Depending on the specific model, top mounted (single flange/immersion), side mounted (double flange), or other non-contact (such as guided wave radar, ultrasonic) installation methods may be used.

-Ensure that the probe or capillary is vertically immersed in the medium and avoid contact with the tank wall. For double flange type, ensure that the flange interfaces on the high and low pressure sides are flush and installed horizontally (unless special design allows tilting).

4. Connection and fixation:

-Use gaskets of the correct material, size, and form, apply an appropriate amount of sealing grease, and tighten the flange bolts evenly and step by step in diagonal cross order to the specified torque.

-Carefully place the transmitter body on the bracket and secure it.

-When connecting the pressure pipe (if applicable), ensure that the pressure pipe is as short as possible to reduce delay, and follow the slope requirements to discharge gas or condensate.

5. Electrical connection:

-Open the electrical junction box cover of the transmitter and use appropriate tools to connect the wires to the corresponding terminals according to the wiring diagram.

-Ensure that the wires are securely fastened and strictly follow the requirements of the explosion-proof area (such as using armored cables and sealed joints).

-Reliable grounding to prevent electrical interference.

6. Parameter setting and debugging:

-According to actual needs, parameter settings are made through the panel configuration of the liquid level control box, including depth value, range, minimum alarm value, maximum alarm value, and start-up value settings.

-Use the settings tool to adjust parameters and confirm saving.

-Perform zero point calibration when the container is in a known liquid level state and the system is in a stable operating condition after shutdown.

2、 Maintenance Guide

1. Regular inspection:

-CheckVEGA liquid level transmitterCheck for obvious physical damage, leakage, and corrosion of the body and connecting components (flanges, pressure pipes, capillaries, junction boxes).

-Check if the transmitter dial and display window are clear and if the displayed values are reasonable.

-Check if the junction box cover is tightly closed and well sealed; Whether the cable sheath is damaged and whether the sealing joint is intact.

2. Cleaning and maintenance:

-Regularly compare transmitter readings with other indicators (such as on-site magnetic flip plates, glass level gauges) or DCS historical trends to determine if the output is stable.

-Clean the antenna/probe end face with a soft cloth and non corrosive solvent to avoid scratching or damaging the smooth surface.

-For float/float ball transmitters, check if the float moves freely without deformation, breakage, or jamming, and clean the dirt inside the conduit.

3. Zero point calibration and range calibration:

-Follow the steps in the installation guide to perform zero calibration again at the known zero point.

-If conditions permit, precision testing and calibration can be conducted at zero and full points (or intermediate points).

4. Special media handling:

-For media with high viscosity, easy crystallization, and easy scaling, shorten the inspection and cleaning cycle.

-Consider using steam or chemical agents to heat/clean the interface (ensuring that the transmitter allows it).

-For corrosive media, focus on checking the corrosion of isolation diaphragms, flange sealing surfaces, and capillary tube sheaths to ensure the correct selection of materials.

5. Environmental adaptability treatment:

-In high temperature environments, check the status of the filling fluid to avoid slight decomposition of silicone oil caused by high temperatures, which may affect accuracy.

-In low-temperature environments, ensure that the filling liquid (silicone oil) of the transmitter does not solidify and take instrument insulation and heat tracing measures.

-In a vibrating environment, check if the fasteners are loose and add fixing points to reduce the impact of vibration on the transmitter.

6. Safety measures:

-Before maintenance, ensure that the relevant process equipment has been shut down, isolated (with valves closed), depressurized, and emptied (if possible), and perform lockout and tagout procedures.

-Equip personal protective equipment for corrosive or harmful media.

The installation and maintenance of VEGA level transmitters must strictly follow the product manual and relevant safety regulations to ensure their accuracy, stability, and long-term operation.