1. Main applications:

With the increasing emphasis on building quality by the government and the need for disaster prevention, mitigation, and the construction of a harmonious society, building quality inspection departments at all levels have intensified their quality inspections of external windows made of different materials used in the construction industry. At the same time, door and window manufacturing enterprises have also strengthened their product factory inspections. In response to market demand, based on independent innovation and extensive absorption of advanced technologies from both domestic and international sources, has developed the fully automatic CWWS series of physical performance testing instruments for doors and windows. Now, on the basis of the original product, a new generation of products has been developed.

This machine is primarily designed for testing the airtightness, water tightness, and wind pressure resistance of various architectural exterior doors and windows. It is widely applicable to construction engineering quality inspection departments, product quality inspection departments, universities, and aerospace research institutions

Based on standards: EN1026 EN1027 EN12211 ISO6612 ISO6613

The machine can be design according to the different test standards.

II. Main Technical Indicators:

1. Water tightness: Water flow supply range: 80~1600L/h; Accuracy level: Not greater than Level 2.5.

Water spray volume range: 1~3L/m².min; spray angle: (120±10)°

2. Air flow measurement range: 0~650m³/h; Accuracy level: <±3% of indicated value.

3. Wind pressure range and adjustment range: -7000Pa to +7000Pa; pressure measurement accuracy: <±2% of indicated value;

4. Displacement range: ±50mm; Displacement resolution: 0.01mm; Accuracy: ±0.1%FS.

5. Fluctuation compression: Fluctuation cycle: 3s~5s. Fluctuation time per level: 5min

6. Control mode: Microcomputer-based fully automatic + CNC fully automatic

7. Power Supply: 380V±10%, 50HZ; Power: 12KW.

8. Overall dimensions: dimensions of the Static pressure chamber ： 3910×1400×3700

9. Measurement of external window dimensions: 0.6m×0.6m to 3.0m×3.0m

III. Host Configuration:

1. Centrifugal fan;

2. A set of dedicated embedded control system motherboard and software;

3. High-precision pressure transmitter;

4. Imported frequency converter;

5. Water source control center: 80-1800L/h water flow meter, electric self-priming pump, adjustable manual flow valve to adjust the water flow rate, and determine the flow rate through the flow meter;

6. Displacement sensor;

7. Anemometer;

8. Lenovo brand computer (19-inch LCD monitor, 1G memory, 160G hard drive);

9. HP color inkjet A4 printer.

IV. Product Features:

1. Accuracy

1.1 Nonlinear correction for sensors: The system employs a 24-bit analog-to-digital converter (AD) to perform nonlinear correction for multiple points of the sensors, achieving precise calibration of the sensors.

1.2 Fast sampling speed and good real-time performance: The system synchronously collects signals from various sensors with fast sampling speed, and adopts high-speed Ethernet communication, thus achieving more accurate measurement and control. For example, when preparing to apply a pressure pulse of 500Pa, the displayed value changes continuously from 0 to 500.

1.3 Design ingenious displacement sensor accessories to meet the requirements of national standards.

2. Convenience

2.1 The adoption of a fully digital embedded measurement and control system, with its powerful functionality, simplifies experimental operations, achieving true dual display and dual control, as well as "one-click" operation. For instance, when conducting wind pressure resistance tests in a fully automated manner using a microcomputer, simply pressing the start button automatically completes the entire testing process. Offline numerical control in fully automated mode: Each key corresponds to a step-by-step testing process, making operation simple and allowing for automatic calculation of deflection and P1, P2, P3 values. For example, pressing the "positive preparation for pressurization" key automatically completes the positive preparation for pressurization.

2.2 Button-controlled spraying, easy to operate: The rainwater sprinkler head is controlled by an electromagnetic valve, and the spraying can be controlled by operating the button according to the specimen size indicated on the panel.

2.3 By utilizing a database to manage experimental data, users are able to independently edit the format of experimental reports.

2.4 No need to operate the frequency converter, simple: It adopts an imported universal frequency converter without programming function, and only requires the setting of four commonly used parameters before leaving the factory, without user operation.

3. Time-saving

3.1 The adoption of a sample clamping mechanism that facilitates one-point advancement and full-line clamping significantly reduces the clamping time and labor intensity for operators.

3.2 The CNC system features a "one-click" fully automated process, with synchronous calculation of test data, and relevant data for the next test step is automatically obtained. It allows for continuous testing, saving test time.

4. Reliability

4.1 The CNC system directly controls the frequency converter, with optimized and upgraded structure, making it more reasonable and reducing the system's failure rate.

4.2 Based on the principle of "one tree supporting a thousand pounds", a new upper support device has been designed and can be adjusted according to different test window specifications.

5. Progressiveness

The self-developed fully digital measurement and control system adopts an embedded single-board microcomputer structure, equipped with a preemptive multitasking operating system. It has built-in powerful measurement and control software that integrates measurement, control, calculation, and storage functions. It also incorporates standard network functions and utilizes high-speed Ethernet communication, allowing it to be connected to a PC via a standard network cable for data sharing.