When it comes to reliable and accurate liquid level monitoring in harsh and challenging environments, choosing the right instrumentation is critical. At ESI Technology, we specialise in precision-engineered solutions designed to withstand the toughest applications. One of our flagship products, the PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform, is specifically built to deliver accurate readings even in conditions where traditional transmitters may fail.

What is the PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform?

The PR3420 is a robust, high-performance submersible pressure transmitter designed for continuous depth and level measurement in tanks, reservoirs, rivers, and sludge applications. Unlike standard transmitters, the PR3420 includes an innovative sludge platform, making it ideal for environments where suspended solids, debris, or sludge can build up and interfere with sensors.

This feature ensures the sensor remains clear of obstructions and continues to operate accurately, extending its service life and reducing the need for maintenance. The PR3420 is built to ESI Technology’s renowned standards of quality, making it a trusted choice for industries including:

• Wastewater treatment

• Environmental monitoring

• Slurry and sludge processing

• Industrial effluent management

• Water resource management

Key Features of the PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform

At ESI Technology, we know that downtime and inaccurate data cost businesses money. That’s why the PR3420 has been engineered to provide dependable performance in even the most demanding environments. Some of its standout features include:

• Sludge platform design – Prevents build-up around the sensing element, ensuring consistent accuracy.

• Rugged stainless steel construction – Corrosion-resistant housing to withstand aggressive liquids.

• High accuracy and stability – Delivers precise measurements for reliable process control.

• Vented cable – Compensates for atmospheric pressure changes, improving long-term stability.

• Customisable ranges – Available in different pressure ranges to suit specific depth or level monitoring requirements.

• Long-term reliability – Engineered for continuous immersion with minimal servicing needs.

These features make the PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform an invaluable tool for operators who demand accurate monitoring in conditions where other sensors quickly become fouled.

Why Choose the PR3420 for Sludge Applications?

Sludge and slurry environments present unique challenges. Sediment, organic matter, and debris can quickly clog or damage sensors, leading to incorrect readings and costly downtime. The PR3420’s sludge platform provides a physical barrier that keeps the transmitter performing optimally, even in environments with high levels of suspended solids.

In wastewater treatment plants, for example, the PR3420 allows operators to monitor water levels accurately throughout clarifiers, digesters, and holding tanks. In environmental monitoring, it ensures reliable measurement of rivers and reservoirs where silt and sediment can otherwise compromise data quality.

By investing, organisations benefit from:

• Reduced maintenance costs

• Longer equipment life

• Consistent, accurate data for better decision-making

• Increased operational efficiency

ESI Technology: Your Trusted Partner

At ESI Technology, we are proud to design and manufacture our instruments to the highest standards. With decades of experience in pressure measurement technology, our products are used worldwide across critical industries. The PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform reflects our commitment to innovation, durability, and customer satisfaction.

When you choose ESI Technology, you are not just buying a sensor—you are partnering with a team dedicated to providing expert support and tailored solutions for your application.

Applications

The versatility of the PR3420 means it can be applied across a wide range of industries. Typical uses include:

• Wastewater plants – Monitoring tanks, sludge pits, and settlement processes.

• Industrial processing – Measuring effluent and slurry levels in manufacturing environments.

• Environmental projects – Tracking water levels in rivers, lakes, and reservoirs with high sediment.

• Agriculture – Managing slurry pits and water storage for livestock operations.

Wherever sludge or sediment is a concern, the PR3420 provides a reliable, low-maintenance solution.

Conclusion

The PR3420 is more than just a pressure transmitter—it is a solution purpose-built for the most challenging environments. Combining robust construction with innovative sludge-resistant design, it ensures accuracy, reliability, and efficiency in critical monitoring applications.

At ESI Technology, we are proud to offer this advanced product as part of our comprehensive range of pressure measurement solutions. If you are seeking reliable, long-term performance in sludge, slurry, or sediment-heavy applications, the PR3420 is the transmitter you can trust.

Contact ESI Technology today to discuss how the PR3420 Submersible Depth and Level Pressure Transmitter with Sludge Platform can support your operations.