Experimental steps of building door and window on-site detector - Database & Sql Blog Articles

Building Door and Window Detector

Overview

The Building Door and Window Field Detector is a new portable device developed by our company. It allows for efficient and accurate testing of air tightness, water tightness, and wind pressure resistance in building windows and doors.

It uses a manual knob to adjust air pressure, displaying the instrument's cycle detection results including air pressure, airflow, and deformation displacement. The wind source and control system are all integrated into a suitcase, making it compact, lightweight, easy to carry, reliable, and user-friendly.

Applicable Standards

JG/T 211-2007 "On-site Inspection Method for Airtight, Watertight, and Wind Pressure Resistance of Building Exterior Windows"

GB/T 7106, 7, 8 standards.

Main Specifications

Voltage: AC 220V

Power: 7.2kW

Airtight Pressure: ±200Pa

Watertight Pressure: 0 ~ +700Pa

Wind Pressure: ±2000Pa

Airflow: 20m/s (267.8 L/hour)

Working Environment

1. Relative humidity: ≤85% without condensation;

2. Temperature: 0 ~ 50°C;

3. Altitude: <1500 meters;

Display the correspondence between channel number and detected value

Channel Number | Measured Value

CH1 | ±200Pa pressure

CH2 | Airflow 0 ~ 267.8 L/hour (20m/s)

CH3 | ±6000Pa pressure (Actual = Display ×10)

CH4, 5, 6 | Three-point displacement display, 0 ~ 20mm

Steps

1) Install the static pressure box, air path, and water system;

2) Open the suitcase and insert the straight pipe section of the wind pipe into the positive pressure port;

3) Insert the airflow meter into the straight pipe and connect its cable plug to the socket on the suitcase;

4) Apply plastic cloth to the window and insert the hose into the plastic bag, sealing it with tape;

5) Insert the pressure tube into the controller and clamp it inside the plastic bag;

6) Close the air switch, turn on the power, and ensure the airtight indicator is on;

7) Adjust the “Voltage” knob counterclockwise to the minimum;

8) Press the “Airtight” and “Wind 1” buttons; if wind is insufficient, press “Wind 2” as well;

9) Rotate the “Voltage” knob clockwise while monitoring the CH1 pressure value to reach 150Pa;

10) Press “Wind Power 1” button;

11) When the pressure returns to zero, press “Wind Again 1” to stabilize at 150Pa for 3 seconds, then press “Wind Power 1” again;

12) Repeat steps 9–11 and adjust the “Voltage” knob to the minimum;

13) Press “Wind Power 1” button;

14) Slowly rotate the “Voltage” knob clockwise while watching the CH1 pressure stabilize at 100Pa for 10 seconds;

15) Continue rotating the knob clockwise until the pressure reaches 150Pa and stabilizes for 10 seconds;

16) Rotate the “Voltage” knob counterclockwise until the pressure returns to 100Pa and stabilizes for 10 seconds;

17) Adjust the “Voltage” knob to the minimum;

18) Insert the straight pipe section into the negative pressure port;

19) Slowly rotate the “Voltage” knob clockwise while watching the CH1 pressure reach -150Pa;

20) Press “Wind Power 1” button;

21) When the pressure returns to zero, press “Wind Again 1” to stabilize at -150Pa for 3 seconds, then press “Wind Power 1” again;

22) Repeat step 19 once and adjust the “Voltage” knob to the minimum;

23) Press “Wind Power 1” button;

24) Slowly rotate the “Voltage” knob clockwise until the pressure stabilizes at -100Pa for 10 seconds;

25) Continue rotating the knob to reach -150Pa and stabilize for 10 seconds;

26) Rotate the “Voltage” knob counterclockwise until the pressure stabilizes at -100Pa for 10 seconds;

27) Adjust the “Voltage” knob to the minimum;

28) Insert the straight pipe section into the positive pressure port;

29) Press “Wind Power 1” button;

30) Slowly rotate the “Voltage” knob to reach 500Pa and stabilize for 3 seconds, then press “Wind Again 1”;

31) Repeat steps 28–30 and press “Wind Power 1”;

32) Open the sprinkler system to regulate the water flow to 2L/min/m² and start spraying;

33) After 5 minutes of spraying, press “Wind Again 1” and slowly rotate the “Voltage” knob to stabilize at 100Pa for 5 minutes;

34) Continue increasing pressure step by step to 700Pa and stabilize for 5 minutes to complete the stable pressure test;

35) Spray for another 5 minutes, press “Wind Again 1”, rotate the knob to stabilize at the design pressure for 15 minutes to complete the design value test;

36) Adjust the “Voltage” knob to the minimum and press “Wind 1” button;

37) Prepare for pressurization;

38) Insert the straight pipe into the positive pressure port;

39) Rotate the “Voltage” knob to reach 500Pa and press “Wind Power 1”;

40) When the pressure returns to zero, press “Wind Again 1” to stabilize at 500Pa for 3 seconds, then press “Wind Power 1” again;

41) Repeat step 40 and adjust the “Voltage” knob to the minimum;

42) Press “Wind Power 1” button;

43) Rotate the “Voltage” knob to reach 200Pa and record the displacement values from CH4, 5, 6 to calculate deflection B ≥ 1/300;

44) Rotate the knob to 400Pa and record the same data to check B ≥ 1/300;

45) Continue rotating to 1800Pa and record the data to ensure B ≥ 1/300;

46) Rotate to 2000Pa and record the data to confirm B ≥ 1/300;

47) Adjust the “Voltage” knob to the minimum;

48) Insert the straight pipe into the negative pressure port;

49) Rotate the “Voltage” knob to reach -500Pa and press “Wind Power 1”;

50) When the pressure returns to zero, press “Airtight” to stabilize at -500Pa for 3 seconds, then press “Airtight” again;

51) Repeat step 50 once and adjust the “Voltage” knob to the minimum;

52) Press “Wind Power 1” button;

53) Rotate the “Voltage” knob to reach -200Pa and record the displacement values to calculate B ≥ -1/300;

54) Rotate to -400Pa and record the same data to ensure B ≥ -1/300;

55) Continue to -1800Pa and record the data to confirm B ≥ -1/300;

56) Rotate to -2000Pa and record the data to check B ≥ -1/300;

57) Adjust the “Voltage” knob to the minimum;

58) Turn off the air switch and power, ensuring the indicator light is off;

59) End the test;

60) Adjust the “Voltage” knob to the minimum;

61) Press “Wind 1” and “Wind 2” buttons;

62) Turn off the air switch and power, and ensure the power indicator is off.

Precautions

1) Ensure the airflow meter is inserted correctly into the straight pipe;

2) Connect a reliable grounding wire at the site for safety;

3) Convert all units to match the standard requirements for accurate judgment.