How to Properly Install A Single Flange Pressure Transmitter?

The accuracy and reliability of a single flange pressure transmitter largely depend on its installation quality. Due to process and economic considerations, these transmitters are often installed in harsh environments. Therefore, proper installation methods and precautions are crucial. Below are the key steps and considerations for ensuring the correct installation of a single flange pressure transmitter.

1. Choosing the Installation Location

The single flange pressure transmitter can be directly mounted on pipelines or tank walls using a flange. Selecting the right installation location is the first step to ensure measurement accuracy.

• Vertical Installation: The transmitter body can rotate within the flange, but the flange face must remain vertical. If the flange face is vertical, rotating the transmitter won’t affect the zero point. If horizontal installation is required (e.g., on a vertical pipeline), the hydraulic head effect caused by different connecting pipe heights must be eliminated, and the zero point should be readjusted after installation.

• Avoid Vibration and Shock: Install the transmitter in a location with minimal vibration and shock to prevent external mechanical forces from affecting measurement accuracy.

• Temperature Control: Install the transmitter in an area with minimal temperature fluctuations to avoid extreme temperature effects on measurements.

2. Installation Steps

1. Inspect the Transmitter and Pipeline: Before installation, check the transmitter for any damage, especially the measuring diaphragm. Ensure the pipeline or tank wall connection surface is clean and flat.

2. Secure the Flange: Mount the transmitter on the pipeline or tank wall using the flange. Ensure the flange face is vertical and tighten it with appropriate bolts and gaskets to prevent leaks.

3. Adjust the Zero Point: If the flange face is not vertical (e.g., in horizontal installation), readjust the transmitter’s zero point after installation to eliminate hydraulic head effects.

4. Connect the Pressure Tube: If a pressure tube is used, ensure its length and diameter meet requirements to avoid pressure loss. Keep the tube as short and straight as possible.

3. Key Precautions

• Avoid Overload: The static pressure overload limit is usually indicated on the product or in the manual. Ensure the maximum pressure does not exceed the transmitter’s full range to prevent damage.

• Protect the Diaphragm: The measuring diaphragm is located at the front of the transmitter and can be easily damaged by contact with hard objects. Avoid touching or pressing the diaphragm during installation and use.

• Environmental Suitability: Avoid installing the transmitter in high-temperature, high-humidity, or corrosive environments. If unavoidable, use protective measures like covers or corrosion-resistant materials.

• Professional Installation: Installation, calibration, and maintenance should be performed by qualified engineers or technicians. Read the product manual carefully and follow all guidelines to ensure proper operation.

• Safe Removal: The transmitter should only be removed under atmospheric pressure. Ensure system pressure is fully released before removal to avoid hazards.

4. Common Issues and Solutions

• Zero Drift: If zero drift occurs after installation, it may be due to improper installation or temperature changes. Recalibrate the zero point or check the installation location.

• Inaccurate Measurements: If measurements are inaccurate, check for issues with the pressure tube (e.g., excessive length, blockages). Ensure the tube meets specifications and clear any blockages.

• Transmitter Damage: If the transmitter malfunctions after installation, check for overloading or diaphragm damage. Ensure system pressure is within the transmitter’s rated range and inspect the diaphragm.

5. Conclusion

Proper installation of a single flange pressure transmitter is essential for ensuring measurement accuracy and long-term reliability. By selecting the right location, following correct installation steps, protecting the diaphragm, and relying on professional calibration and maintenance, you can avoid common issues and ensure optimal performance. Always refer to the product manual and adhere to guidelines for safe and effective use.

By following these steps and precautions, you can ensure the quality of installation, improve measurement accuracy, and extend the transmitter’s service life.