Selection of Pressure Instruments for Water and Gas Supply Systems in Jiangsu Province

In urban infrastructure development in Jiangsu Province, the safe and stable operation of water and gas supply systems is of paramount importance. Pressure instruments, as the core equipment for monitoring pipeline network performance, play a critical role; their proper selection directly affects the system’s control accuracy and safety. Given Jiangsu’s unique climatic conditions and the characteristics of the media involved, a scientifically sound instrument‑selection process must take into account a wide range of factors.

Core requirements for pressure instruments in water and gas supply systems

The operating environment of water and gas supply systems is complex, placing stringent requirements on pressure instrumentation:

• High Precision and Stability:Even minor fluctuations in pipeline pressure can affect end-user experience or pose safety risks; therefore, instrumentation must exhibit long-term operational stability and high measurement accuracy.
• Corrosion Resistance and Pressure Resistance:Differences in water quality within the supply system, as well as trace impurities that may be present in the gas distribution network, necessitate that instrument wetted‑part materials exhibit robust corrosion resistance and withstand potential pressure surges in the pipeline network.
• Environmental Adaptability:In the Jiangsu region, summers are characterized by high temperatures and frequent rainfall, with particularly high humidity during the plum‑rain season. Instruments must therefore feature superior water‑ and moisture‑resistance to withstand complex outdoor or semi‑outdoor installation environments.

Common Types of Pressure Instruments and Their Applicable Scenarios

Depending on their measurement principles and output methods, the commonly used pressure instruments mainly include the following types:

• Bourdon tube pressure gauge:It features a simple structure, is cost-effective and practical, and is suitable for routine monitoring scenarios where pressure data can be read directly on-site, such as local inspections at pump stations or pressure-regulating stations.
• Pressure transmitter:It can convert pressure signals into standard electrical signals, facilitating integration with automated control systems. It is suitable for main water and gas supply networks that require remote monitoring and centralized data management.
• Digital pressure gauge:Combining on-site display with high-precision measurement, select models support data logging and remote transmission, making them suitable for critical process points or calibration references where measurement accuracy is paramount.

Key Considerations for Product Selection in the Jiangsu Region

When making specific equipment selections, it is necessary to take into account the actual conditions in Jiangsu Province and give particular attention to the following aspects:

• Medium property matching:For water supply systems, the wetted‑part materials—stainless steel or those with an anti‑corrosion coating—should be selected based on local water quality conditions. For gas supply systems, the instrument materials must be compatible with the gas composition and comply with the specific requirements for hazardous (explosion‑proof) areas.
• Protection Level Selection:In Jiangsu’s rainy and humid climate, outdoor‑installed pressure gauges should be rated to a high protection standard to prevent moisture ingress that could damage internal components or compromise measurement accuracy.
• Ease of Maintenance and Calibration:Water and gas supply systems typically require uninterrupted operation; when selecting equipment, consideration should be given to maintenance-free instrument designs or configurations that facilitate online calibration, thereby reducing long-term operation and maintenance costs.

Selection Summary and Operations & Maintenance Recommendations

The selection of pressure instruments is a systematic process. In the construction of water and gas supply systems in Jiangsu, only by fully integrating pipeline network process requirements, medium characteristics, and regional climatic conditions can one choose pressure instruments that both meet measurement needs and offer high reliability. At the same time, establishing a regular inspection and calibration regime is an essential foundation for ensuring the long-term accuracy of these instruments and safeguarding the city’s critical infrastructure.