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Large-flow digital display scale dual-purpose air leakage tester Q90

The Q90 air leakage tester is a special equipment for testing the air tightness of ventilation and air conditioning and fire dampers. It is suitable for large shopping malls, office buildings, automobile air leakage, subway stations and public works ventilation and air conditioning systems in the air ducts, air conditioning units, fire dampers, and airtight Air leakage, control valve and other tightness quality tests.

This product applies the test principle of the venturi nozzle method, using the internationally advanced ultra-micro-hole nozzle method. It has been successfully developed after several years on the basis of the air duct leakage tester. It is the first domestic product air leakage test. The instrument has reached the international advanced level in application technology. It has a very reasonable design, small size and convenient use. It is designed completely in accordance with China's test requirements and supplements the gap in domestic air leakage testing. The advantage of the Venturi nozzle method to test the air inlet volume is that the data is stable and there is no drift in the data. It only needs to change the nozzle diameter to cover a wide measurement range, and the measuring aperture does not change. The measurement accuracy will never change. The instrument is solid-state eternal and invariable precision mode. However, the processing accuracy requirements are very high. The measuring aperture of the Venturi nozzle needs to be 0.2 mm, the aperture accuracy is ±0.1 microns, and the reading is a scale read-only flow, which can ensure that the accuracy of the instrument will never change after too many years. It can be understood by the principles of the two products: piano and electronic keyboard. Solid-state mechanical pianos can be used for hundreds of years without any change in tone, while electronic pianos will change drastically within a year or two and are prone to failure. The real Q90 uses the principle of the Venturi nozzle method. Moreover, the test hole of the flow nozzle is under negative pressure, so this hole will never be blocked. The processing party of the test hole is a Russian military equipment factory. The following are photos of Q90 nozzles with four different flow ranges.

The high-pressure quartz tube used for the scale display can withstand pressure up to 8000Pa. The manufacturer of the high-pressure quartz tube is Hamamatsu, Japan. The direct reading unit of the air leakage test data of the instrument is L/S, and the direct reading unit of the test pressure is Pa.

The original Q90 motor is produced by Russia’s MiCairo Company. The turbocharged impeller is also produced in Russia. This motor and turbine are used for heat dissipation of turbojet engines in Russia, so the volume is small and the wind pressure and air volume are high. The total weight of the motor is 9.5. Kilograms, the speed is 33000 rpm, the torque is 7 N/m, the total pressure of the fan is 7500 Pa, and the total air volume is 4000 cubic meters per hour. The following is a photo of the motor and turbocharged impeller produced by the real Russian Mi Cairo company. The motor shell is made of pure aluminum alloy, with multiple heat conduction grooves distributed, and the tail part is a high-speed fan for heat dissipation. The turbocharged impeller consists of 34 blades, and the turbocharger (the shape is a new generation of fluid mechanics design) is made of chromium-manganese-titanium alloy, which can withstand high temperatures and does not produce any deformation at ultra-high speeds.

The inverter is imported from Fujitsu, Japan, and the high-power current is below 22A. This is the inverter photo.

The digital display sensor is a medical type (stability can be up to ten years) gas flow sensor and pressure sensor imported from the United States NXP Company. The following is the test report of the US laboratory

The latest model Q90 air leakage tester can test the air leakage of various specifications of fire dampers, air ducts, central air conditioners, airtight rooms, etc. under complex industrial and mining and harsh on-site environments. It has variable frequency technology and high-pressure super large air volume fans. With world-class technology, the products are exported to the United States, India, Africa, Germany and other countries. The total sales volume has exceeded 1,000 units, occupying more than 90% of the domestic air leakage detection market. Compared with the air leakage that foreign manufacturers have recently developed As far as the air volume tester is concerned, first, the core components of the air leakage tester produced by our factory are all produced by Russian military industry manufacturers. It has a small air volume and a very high air pressure. The air outlet diameter is 105 mm and the maximum air volume is It is 4000m³/h, the maximum wind pressure can reach 7500Pa, and the total volume of the instrument is 30 kg, which cannot be achieved by imported instruments. Generally, the core components of imported instruments are civilian products, which results in large volume and heavy weight, and small air output. The wind pressure is not enough. The lighter the weight and the smaller the size at the test site, the more convenient it is to carry, and the instrument has portability and practicality on site. Secondly, the air leakage tester produced by our factory has the world-class frequency conversion technology, which can be suitable for all kinds of air ducts, fire dampers of various specifications, central air conditioners, and airtight rooms. Some foreign instruments do not have this function. As a result, the test air pipe was broken when testing small air pipes and low-pressure air pipes, which made it impossible to test, and high-pressure air pipes and large-area system air pipes could not be suppressed or measured. Third, the simplicity and practicability of operation. Compared with foreign air leakage testers, the instruments produced by our factory are simple to operate. Ordinary technical engineers can learn to operate and use directly by reading the instructions and schematic diagrams, which is simpler than foreign products A lot easier to understand. Fourth, market awareness. Since the products produced by our factory have been sold at home and abroad for nearly 7 years, the maturity and awareness of the products are understandable. Fifth, our company has distributors in various provinces and cities for the after-sales of products. Some small parts of customers only need to be repaired and maintained at the local distributors, which saves the trouble of the maintenance time and the manufacturers. It takes at least a few months or even more than a year to repair foreign instruments. Fifth, the price, regardless of the price of the instrument and the price of accessories, foreign products are several times or even ten times higher than ours, and foreign products are new market-oriented instrument structures and technologies that have reached maturity, and the repair rate is better than ours. Factory products are much higher. Sixth, our company promises that the small parts of the instrument will be maintained free of charge for life, which is unattainable by all foreign manufacturers. Seventh, the core motor is produced by Russia's Michele military enterprise. The motor warranty is 2 years, which is unattainable by all instruments.

Now our company's Q90 is currently the most powerful, stable, and precise finalized product on the market. It can test large-scale air-conditioning systems, air-conditioning units, fire dampers, large-scale smoke extraction systems, pharmaceutical factory purification rooms, nuclear polluted gas pipelines, airtight rooms and other multi-functional new products. The company's many years of technological innovation Q90 are exported to Europe and the United States. In developed countries, Africa, India, Pakistan and other projects under construction, the air leakage test instruments are all our company’s Q90. Q90 was the designated air leakage tester for nuclear power plants under construction in China with AP1000 system at the end of 2010. Many research institutes have updated this product after the new model Q90 obtained the national metrology license and national patent, such as Shanghai Academy of Construction Sciences, Shenzhen Academy of Construction Sciences, Guangdong Academy of Construction Sciences, China Electronic System Third Company, Shenzhen Construction Engineering Quality Inspection Co., Ltd., Shenzhen Tyco Construction Inspection Co., Ltd., Shenzhen Hengyi Construction Engineering Quality Inspection Center, Guangdong Industrial Equipment Installation Fifth Company, Guangdong Industrial Installation Fourth Company, Shenzhen Shenke Engineering Inspection Co., Ltd., Guangdong Jianyue Engineering Inspection Co., Ltd., Zhejiang Architectural Design and Research Institute, Shenzhen Jingheng Engineering Inspection Co., Ltd., China Electronic System Second Corporation, China Nuclear Industry Construction Group Co., Ltd., Dalian Weijia Shipbuilding, Dalian Shipyard, etc. have all been purchased The latest instrument of Q90.

The main technical parameters：

Scale air leakage range： 3L/s—142L/s（10-537m³/h）
Digital display air leakage range：0-1300m³/h，
Measuring pressure range：0-4000Pa

(Large-scale air leakage flow device)
Test pressure range： 0Pa—4000Pa
Power： 2500 W
Motor speed： 0 — 33000r / m i n
Applicable power supply： 220VAC或120V/60HZ（With power adapter）
Dimensions： 475*405*315
Weight： 30公斤
Test accuracy： 3%