Application of Nexisense General-Purpose Pressure Transmitters in Heating Systems: Stable Monitoring to Improve Efficiency and Safety

Heating systems provide thermal energy to maintain indoor temperatures at comfortable levels, ensuring comfort for residential and commercial spaces. Modern automated heating control systems consist of a control center, field units, communication networks, local instruments, and regulation devices, working together to distribute heat accurately. Pressure transmitters, as key instruments, ensure stable system pressure and prevent failures. Nexisense general-purpose pressure transmitters are widely applied in this field due to their reliable performance, helping to optimize operation.

Definition and Function of Pressure Transmitters

A pressure transmitter converts pressure signals into standard electrical signals. In heating systems, it monitors key points in real-time, such as boiler outlets, supply and return pipes, and water tank levels. The data is transmitted to the control center to adjust output based on heat demand, maintaining system balance and preventing overpressure leaks or low-pressure circulation issues.

Nexisense products support remote signal transmission, aiding remote management and fault warning.

Principle of Operation

General-purpose pressure transmitters are based on diffused silicon or ceramic chip technology. Medium pressure acts on the sensing diaphragm, causing resistance or capacitance changes, which are amplified and compensated by built-in circuits to output standard signals such as 4-20mA. Temperature compensation reduces environmental effects, ensuring accuracy.

This principle suits wide-temperature variations in heating systems and provides fast response.

Internal Structure Analysis

Nexisense general-purpose transmitters are compact, with a stainless steel housing rated IP65 or higher. The core components include the sensing element, isolation diaphragm, and signal processing board. Various interfaces, such as threaded or flanged connections, facilitate pipeline integration.

Compact size and lightweight design improve on-site assembly efficiency.

Key Advantages

Compact structure and easy installation make it suitable for space-limited heat exchange stations or boiler rooms. It offers high stability, vibration and corrosion resistance, suitable for long-term continuous operation. Fast response ensures real-time data transmission and rapid adjustment.

These features ensure efficient and stable system performance during seasonal load variations, reducing energy consumption.

Application Scenarios in Heating Systems

Boiler outlet pressure monitoring: prevents overpressure damage and ensures stable water supply.

Heat exchange station supply and return pressure: calculates differential pressure to optimize heat exchange and balance secondary network circulation.

Water tank level measurement: calculates level from bottom pressure to control feedwater pumps.

End-of-building pipe monitoring: measures branch pressure and adjusts valves for time- and zone-based heating.

These applications help companies respond to thermal load changes, improving comfort and energy efficiency.

Measurement Method and Installation Guidelines

Measurements are typically direct contact, using gauge or differential pressure modes. Install at stable pressure points, avoiding elbows or valves that cause interference. Threaded connections are common and can be paired with isolation valves for easy maintenance.

Signals can be connected to PLC or SCADA systems for closed-loop control.

Maintenance Guidelines

Regularly inspect and clean the diaphragm to prevent fouling from affecting accuracy. Calibrate zero and full scale annually to verify output. Protect against freezing in winter and high temperatures in summer. Ensure secure wiring and proper grounding to reduce interference.

Proper maintenance ensures long-term reliability and lowers failure rates.

Technical Specifications

Typical Nexisense general-purpose specifications: range 0-1.6MPa to 0-40MPa (customizable), accuracy ±0.5% FS, output 4-20mA or digital signal. Operating temperature -40℃ to 85℃, overload 150% FS. Response time<10ms, material 304/316 stainless steel.

Other Optimization Suggestions

Combine with flow and temperature sensors for multi-parameter monitoring to enhance system intelligence. Wireless transmission options support remote operation and reduce on-site intervention.

Frequently Asked Questions

What if heating system pressure fluctuates significantly?
Add a buffer tank or variable-speed pump and use transmitter data for optimization.

How is water tank level calculated from pressure?
Level = Pressure / (Density × Gravity), automatically converted by software.

Does low winter temperature affect accuracy?
Built-in compensation covers heating environment range.

Are there installation considerations?
Install vertically downward to avoid air bubble accumulation.

Is explosion-proof support available?
Some models are suitable for hazardous boiler room areas.

Conclusion

General-purpose pressure transmitters play a core role in heating systems, monitoring pressure from the boiler to end points, ensuring balance and efficient heat distribution. Nexisense provides reliable solutions with compact, stable, and fast-response designs. With proper application and maintenance, system safety, comfort, and energy efficiency can be significantly improved. In the context of energy-saving and smart heating trends, such devices help enterprises achieve sustainable operation and customer satisfaction.