PR3441 Submersible Pressure Transmitter: Reliable Level Measurement in Demanding Environments

 Accurate liquid level measurement is critical across water treatment, environmental monitoring, marine applications, and industrial processes. The ESI PR3441 Submersible Pressure Transmitter has been designed specifically for these challenging environments, delivering reliable hydrostatic level measurement with excellent long-term stability and durability.

Using proven piezoresistive sensor technology, the PR3441 provides precise depth and level measurement in liquids while maintaining outstanding repeatability and performance over time. Its robust stainless-steel construction and high-strength moulded cable make it well suited to harsh installations where reliability is essential.

Designed for Accurate Hydrostatic Level Measurement

The PR3441 measures liquid level by detecting the hydrostatic pressure created by the height of liquid above the sensor. This simple but highly effective method allows operators to continuously monitor water levels, reservoir depths, boreholes, tanks, and pumping stations.

A vented polyurethane cable connects the transmitter to the surface atmosphere, ensuring accurate compensation for changes in barometric pressure. Additionally, the transmitter features a stainless-steel nose cone with radial inlet holes that help prevent debris and sludge accumulation around the sensing element.

The result is a dependable submersible pressure transmitter that performs consistently even in demanding operating conditions.

Applications for the PR3441

The versatility of the PR3441 makes it suitable for a wide range of level measurement applications.

Common uses include:

• Borehole water level monitoring
• Reservoir and storage tank level measurement
• Groundwater monitoring
• Water mains pressure measurement in inspection chambers
• Submersible pump outlet pressure monitoring
• Environmental monitoring projects
• Marine and offshore level measurement systems

Because the transmitter is suitable for boreholes as small as 25 mm in diameter, it offers an excellent solution for groundwater and environmental monitoring applications where installation space is limited.

Intrinsically Safe Options for Hazardous Areas

Many level measurement applications operate in hazardous environments where explosive gases, vapours, or dust may be present. For these installations, ESI offers an intrinsically safe version of the PR3441.

The transmitter is available with ATEX and IECEx approvals for use in Zone 0 gas environments, Zone 20 dust environments, and Group I M1 mining applications. These certifications allow operators to install the sensor safely in potentially explosive atmospheres while maintaining reliable measurement performance.

This makes the PR3441 particularly suitable for wastewater treatment plants, industrial process facilities, chemical storage systems, and mining operations.

DNV Approved for Marine Applications

For marine and offshore installations, certification is often a critical requirement. The PR3441 is available with DNV approval, providing confidence that the transmitter meets the stringent standards required for marine environments.

DNV approval makes the PR3441 an excellent choice for:

• Ballast water monitoring
• Seawater level measurement
• Offshore platforms
• Marine storage tanks
• Shipboard monitoring systems

Its rugged construction and proven performance help ensure reliable operation even in harsh offshore conditions.

PR3420 Sludge Platform Version for Sediment Applications

While the PR3441 performs exceptionally well in general level measurement applications, some installations present an additional challenge: sediment build-up.

For tanks, lagoons, settling ponds, wastewater facilities, and other environments where sludge or sediment accumulates, ESI offers the PR3420 Submersible Pressure Transmitter with Sludge Platform. The integrated platform raises the sensing element above the sediment layer, helping prevent blockages and maintaining measurement accuracy.

This design significantly reduces the risk of measurement errors caused by sludge covering the sensing diaphragm. As a result, the PR3420 is ideal for:

• Wastewater treatment plants
• Sludge tanks
• Settlement ponds
• Mining slurry applications
• Industrial process tanks
• Environmental monitoring in sediment-rich areas

Like the PR3441, the PR3420 is also available with ATEX and IECEx approvals for hazardous area installations.

A Proven Solution for Challenging Level Measurement Applications

Whether measuring groundwater levels, monitoring reservoirs, managing wastewater processes, or operating in marine environments, the ESI PR3441 provides dependable and accurate level measurement. Furthermore, for applications involving sludge or sediment, the PR3420 Sludge Platform version offers an effective solution that helps maintain measurement integrity over the long term.

Together, these submersible pressure transmitters provide reliable performance, robust construction, and certification options that allow engineers to tackle even the most demanding level measurement challenges with confidence.

Want a quote? Contact our sales team [email protected] or call +44(0)1978 262255