Tiếng Việt
What is an HVAC System?
An HVAC system (Heating, Ventilating, and Air Conditioning) is responsible for controlling the temperature, humidity, and air quality in environments such as factories, shopping centers, cold storage, or clean rooms. This system helps maintain a comfortable and safe environment for both people and equipment, playing an important role in controlling airflow, temperature, and humidity.
Components and Working Principle of HVAC
HVAC System Structure
Heating:
When the room temperature is lower than the set point, the thermostat activates a burner or boiler to generate heat.
Heat is transferred through the air (for burners) or water (for boilers) via a heat exchanger.
A fan pushes the warm air through ducts to the heated space.
Ventilation:
Fresh air from the outside is drawn into the system through fans and air filters.
The air handling unit adjusts the temperature and humidity, then distributes clean air to the rooms.
Old or polluted air is exhausted through exhaust fans.
Air Conditioning:
The refrigerant is compressed by a compressor and passes through a condenser to dissipate heat into the environment.
The liquid refrigerant passes through a throttling valve to reduce pressure and becomes cooler before entering the evaporator.
In the evaporator, the refrigerant absorbs heat from the air inside, cooling the air.
The cooled air is distributed to the space via fans, while the heat is expelled outside through the condenser.
Working Principle of HVAC System
Why Use Differential Pressure Sensors in HVAC Systems?
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Airflow Control:
Ensures that airflow is evenly distributed to areas within the building or factory, maintaining a comfortable environment. -
Monitoring and Maintenance of Filters:
In HVAC systems, air filters prevent dirt and pollutants from entering. When the filter becomes clogged, the differential pressure between both sides of the filter increases, alerting the operator to replace the filter at the right time, ensuring performance and energy savings. -
Room Pressure Control:
For areas requiring strict pressure control (clean rooms, laboratories, hospitals), differential pressure sensors ensure positive or negative pressure as required. -
Fan Performance Optimization:
Differential pressure sensors are used to adjust fan speed in HVAC systems, ensuring the fan operates at the highest efficiency, saving energy and prolonging the lifespan of the equipment. -
Monitoring Heat Exchange Efficiency:
Sensors measure the differential pressure across heat exchangers (such as heating/cooling coils) to check the airflow or fluid circulation.
They help detect issues such as blockages or performance degradation early. -
Leak Detection:
Differential pressure sensors can detect leaks in air ducts or water pipelines by comparing pressure between different sections.
Why Use Huba Control Differential Pressure Sensors in HVAC Systems?
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High Accuracy and Fast Response:
The response time of Huba Control differential pressure sensors is: FS <20s
High accuracy (Fs): ±0.1% to ±1.5% -
Flexible Measuring Range:
Huba Control offers a variety of sensor models with different measuring ranges (from very small to very large), suitable for various applications such as monitoring pressure in air ducts, across filters or heat exchangers, maintaining clean room pressure, or negative pressure. -
Compact Size and Easy Installation:
Huba Control sensors are compact in design, making them easy to install in the limited space of HVAC systems.
They support common protocols and signals (4-20 mA, 0-10 V), making it easy to integrate with automatic control systems. -
Stability and Long-Term Use:
Huba Control is known for its high stability and resistance to pressure drift after long-term use, which is crucial for HVAC systems where frequent calibration is a major challenge.
Huba Control Sensor Solutions 699, 604, and 692 for HVAC Systems
Differential Pressure Sensor 699 – Accurate Pressure Measurement with Fast Response:
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The 699 model is designed to measure differential pressure in HVAC systems with high accuracy, fast response, and a flexible range from a few Pa to several kPa.
Key Specifications:- Accuracy: ±0.3% of the measured value
- Output signal: 4-20 mA, 0-10 V, etc.
- Application: Pressure monitoring across filters, heat exchangers, clean room pressure control
- Compact size, easy to install even in limited spaces
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Pressure Switch 604 – Mechanical Pressure Switch with High Reliability:
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This mechanical pressure switch is used in air and fluid systems, offering superior reliability.
Key Specifications:- Pressure Range: From -50 mbar to +50 mbar
- Simple pressure adjustment, high durability
- Application: With on/off function to monitor pressure in air or fluid pipes to protect equipment from excessive or unstable pressure
- Suitable for harsh environments and easily integrates into existing systems
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Differential Pressure Sensor 692 – Stable Pressure Monitoring with High Accuracy:
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The 692 model is ideal for differential pressure monitoring in HVAC and industrial applications, providing continuous and stable pressure data.
Key Specifications:- Measuring Range: From 0-250 Pa to 0-7500 Pa
- High Accuracy: ±1.5% of the measured value
- Output signal: 0-10 V, 4-20 mA, or other custom signals
- Application: Airflow control, room pressure and fan control, filter monitoring, and other HVAC systems
- Durable design, easy to install in various types of systems
Datapak – Official Distributor of Huba Control in Vietnam
24/7 Support
Our team is always ready to consult and answer any questions via phone, email, or on-site.
Commitment to Providing Quick and Accurate Solutions
We understand that every business has unique needs. Our team at Datapak will advise and propose the most suitable sensor options for your operational realities, helping to save costs while ensuring optimal efficiency.
Long-Term Partnership
Not only do we supply products, but Datapak also supports customers during installation, operation, and maintenance, ensuring equipment operates stably and achieves the highest efficiency.
Contact us now for consultation, solution proposals, and fast quotes!
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Hotline: 0795.40.60.80
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