PRE430H Vibrating Wire Osmometer

PRE430H Vibrating Wire Osmometer – Reliable Pore Water Pressure Monitoring

Accurate pore water pressure measurement is crucial for the safety and stability of civil engineering structures. The PRE430H Vibrating Wire Osmometer is a sophisticated device designed to provide high-precision monitoring in various construction environments. Leveraging advanced vibrating wire technology, this osmometer ensures precise data collection and long-term reliability. In this article, we’ll cover the PRE430H’s standout features, technical specifications, step-by-step installation, applications, and the benefits it offers to your projects.

Why Choose the PRE430H Vibrating Wire Osmometer?

High-Performance Measurement

The PRE430H Vibrating Wire Osmometer is built on the vibrating wire principle, delivering outstanding measurement performance. With a measurement accuracy of ±0.5% F.S and linearity/sensitivity of 0.1% F.S, it is perfectly suited for long-term monitoring applications in foundations, tunnels, dams, and more.

Robust and Durable Construction

Made from stainless steel, the PRE430H boasts excellent resistance to corrosion and harsh environments. Its waterproof design and superior insulation make it an ideal choice for permanent installation in demanding conditions.

Fast and Accurate Data Transmission

The device features a pulse excitation mode for fast measurement and adopts digital signal detection, ensuring the data remains accurate and free from distortion, even over long distances. Its strong anti-interference capability further enhances reliability in complex construction settings.

Technical Specifications at a Glance

Practical Installation Guide

Installation in Concrete

The PRE430H Vibrating Wire Osmometer is usually buried in construction joints of concrete blocks for layered pouring. Follow these steps:

1️⃣ Prepare the Measurement Point

• Reserve a hole: 20 cm diameter, 30 cm depth.

2️⃣ Install the Osmometer

• Wrap the device with filter material and place it in the hole.

• Fill the hole with saturated fine sand and cover with a plate.

3️⃣ Connect and Start Measurement

• Straighten the cable, lead it to the monitoring station, measure the initial value, and proceed with concrete pouring.

Installation in Earth-Rock Dam Foundations

For installations in earth-rock dams:

1️⃣ Expose the Foundation

• When the fill height exceeds the foundation by 50–100 cm, excavate to expose an area of 50×40 cm.

2️⃣ Place the Device

• Add a 20 cm sand layer at the bottom.

• Insert the osmometer wrapped in filter material and cover with 20–30 cm of sand.

• Saturate the sand layer with water.

3️⃣ Cable Arrangement

• Lead cables along a 50×50 cm trench, arranged in parallel in an S-shape.

4️⃣ Backfill and Compact

• Backfill in layers and compact with a wooden hammer, ensuring the fill density and moisture meet design requirements.

5️⃣ Final Compaction

• If backfill is <120 cm, compact manually or with light machinery.

• If 120–200 cm thick, compact using static rolling.

• If >200 cm, proceed with standard rolling.

6️⃣ Measurement Recording

• Record data before and after burial for consistent tracking.

Key Applications

✅ Dams and Hydropower Stations
Used to monitor seepage and leakage along dam structures.

✅ Tunnels and Foundations
Monitors pore water pressure in foundations, enhancing structural stability and reducing failure risks.

✅ Transport Infrastructure
Essential in railways, highways, and bridges to maintain foundation integrity.

Advantages of the PRE430H Vibrating Wire Osmometer

🌟 Exceptional Accuracy
Its ±0.5% F.S accuracy and 0.1% F.S sensitivity ensure you always get reliable data.

🌟 Durable and Cost-Effective
Stainless steel construction and low maintenance needs save time and money in the long run.

🌟 Flexible Applications
Versatile for various projects: dams, tunnels, bridges, and buildings.

🌟 Enhanced Safety
Real-time data allows proactive risk management and protection of workers and structures.

Conclusion

The PRE430H Vibrating Wire Osmometer is your trusted partner for precise and reliable pore water pressure measurement in demanding construction environments. With its robust construction, digital signal detection, and easy installation, it’s an investment in safety and longevity for any project.

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