SITRANS P320 is a high-end differential pressure transmitter from Siemens, specifically designed for liquid level measurement in industrial tanks and vessels. The device stands out with its high accuracy, excellent pressure resistance, flexible configuration, and user-friendly interface, making it suitable for design engineers, operations teams, and maintenance personnel alike.
With a wide range of configuration options, SITRANS P320 meets diverse level measurement requirements, from open tanks and closed tanks to special process media applications.
Differential Pressure Level Measurement Applications with SITRANS P320
1. Open Tank Level Measurement
In open tanks, the measurement principle is based on the hydrostatic pressure of the liquid column.
- The LP side is vented to atmosphere
- The transmitter measures only the pressure at the tank bottom
Key advantages of SITRANS P320:
- High accuracy, up to ±0.075%
- Stable and reliable measurement signal
- Ideal for inventory control and continuous level monitoring applications
2. Closed Tank – Dry Leg Configuration
Applied for closed tanks with overhead pressure such as gas, steam, or nitrogen (N₂).
- The LP side is connected to the top of the tank to compensate static pressure
- Enables accurate level measurement even under high-pressure operating conditions
Outstanding technical capabilities:
- Static pressure resistance up to 160 bar (depending on configuration)
- Ensures system stability and operational safety
3. Closed Tank – Wet Leg Configuration
An ideal solution for:
- Steam vessels
- Condensable process media
In this configuration, the LP side always contains a fixed liquid column to balance pressure.
SITRANS P320 supports:
- Quick Start Wizard for level applications
- Fast input of tank height and fluid density
- Automatic calculation of LRV/URV, including negative LRV in wet leg configurations
👉 This significantly reduces configuration time and minimizes engineering errors.
4. Level Measurement with Transmitter Installed Below Tank Bottom (Zero Suppression)
In certain installations, the transmitter is mounted below the tank bottom, which results in:
- Residual pressure even at 0% level
Advantages of SITRANS P320:
- Direct LRV setting on the display or via HART
- No need to drain the tank during calibration
- Saves time and enhances operational safety
5. Level Measurement with Remote Seal Diaphragms
A dedicated solution for process media that are:
- High temperature
- Corrosive
- Prone to solidification
The diaphragm seal system and capillary tubes fully isolate the process medium from the transmitter.
Key features:
- Intelligent temperature compensation algorithms
- Minimizes oil expansion effects caused by ambient temperature variations
- Ensures long-term stable level signals
VN TECH GROUP – Authorized Siemens Distributor in Vietnam
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Conclusion
With its robust design, high accuracy, flexible configuration, and intelligent features, Siemens SITRANS P320 is the ideal solution for differential pressure level measurement in various industries, including:
- Chemical industry
- Food & Beverage
- Energy & Power
- Water and Wastewater Treatment
Guided by the principle of delivering the highest-quality products and services, VN Tech Group JSC remains committed to understanding customer needs in both industrial plants and production facilities. Professional installation support and optimized engineering solutions make VN Tech Group JSC a trusted partner.
Currently, Siemens SITRANS P320 is officially distributed in Vietnam by VN Tech Group JSC.
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