The level of water resistance of electronic measuring instruments also reflects the ability of the instrument to prevent moisture and dust, especially for outdoor activities, inevitably in the harsh environment of high humidity or dust, the instrument's sealing and waterproof capacity to ensure the safe operation of the instrument And life is crucial. To this end, the IEC 529 standard has been developed internationally. In order to adapt to this, the Japanese industry standard classifies the waterproof protection of electronic instruments into 10 levels, which are denoted by IPX1, IPX2,... Protection class type, meaning <br> <br> unprotected
1 Anti-drip type I Vertically dropping water drops without harmful effects 2 Anti-drip type II and vertical direction 15†Drops falling within the range without harmful effects 3 Rainproof type and vertical direction within 60 degrees without harmful effects of rainfall 4 Splash-proof type Water splash in any direction No harmful influence 5 Spray-proof type Directly affected by water jet in an arbitrary direction 6 Water resistant type Directly received by water in any direction Will not enter the interior 7 Anti-dip type Under the conditions, even if it is immersed in water, it will not enter the inner 8 water type long time immersed in a certain pressure of water can still use 9 moisture proof type Humidity in the relative humidity greater than 90% can still use the international industry standard waterproof registration IP and Japan's industry standard JIS waterproof rating is close to 0-8 in the 9th grade, IP grade also made dust regulations.
Know IPIX Dust and Waterproof Degree Dust Level (The first X indicates)
0: No protection 1 : Prevent large solids intrusion 2 : Prevent medium solids from invading 3 : Prevent small solids from invading 4 : Prevent objects from entering solids larger than 1 mm 5 : Prevent harmful dust from accumulating 6 : Prevent dust from entering waterproof class completely (The second X indicates)
0: No protection 1: Water droplets drip into the housing No effect 2: When the housing is tilted to 15 degrees, water droplets drip into the housing No effect 3: Water or rain does not affect from the 60 degree corner to the housing 4: Liquid from any direction Spilled to the outer shell No harm effect 5: Flush with water without any damage 6: Can be used in cabin environment 7: Can withstand flooding for a short time (1m)
8: Immersion in water for a long time under a certain pressure Example: There is a scale or the indicator is indicated as IP65, indicating that the product can completely prevent dust from entering and flushing with water without any harm.
The IPXX class rules for waterproofing experiments
(1) IPX1
Method name: vertical drip test test equipment: drip test device Sample placement: place the sample on the rotating sample stage at 1r/min according to the normal working position of the sample, and the distance from the top of the sample to the drip outlet should not exceed 200mm
Test conditions: drip volume 10.5mm/min
Duration: 10min
(2) IPX2
Method name: tilting 15° dripping test Test equipment: drip test apparatus Sample placement: Make one surface of the specimen 15° from the vertical, and the distance from the top of the specimen to the drip nozzle should not exceed 200mm. After each face is tested, change it to another face, four times in total.
Test conditions: drip volume 30.5mm/min
Duration: 4×2.5min (total 10min)
(3) IPX3
Method name: Spray test method:
a. Pendulum-type pouring test test equipment: pendulum-tube splashing water splashing test device Sample placement: Select a suitable radius of the pendulum tube, so that the sample table height is in the position of the diameter of the pendulum tube, the sample is placed on the sample table The distance from the top of the sample to the water outlet of the sample is no more than 200mm, and the sample table does not rotate.
Test conditions: The water flow rate is calculated as the number of spray holes in the oscillating tube. Each hole is 0.07L/min. When the water is poured, the water spray holes in the 60° arc section on both sides of the midpoint of the oscillating pipe are sprayed to the sample. The sample was placed in the center of a semi-circular tube. The oscillating tube oscillates along both sides of the vertical by 60°, for a total of 120°. Each swing (2×120°) about 4s
Test time: continuous watering 10min
b. Sprinkler-type water-spraying test equipment: Hand-held water-splashing water-spraying test device Sample placement: The parallel distance from the top of the test to the nozzle of the hand-held nozzle is between 300mm and 500mm. Test conditions: The balance weight should be installed during the test. Material baffle, water flow 10L/min
Test time: According to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area), minimum 5min
(4) IPX4
Method name: splash test method:
a. Placed tube type splash test test equipment and sample placement: Same as above paragraph a of IPX3;
Test conditions: Except for the following conditions, the same with the aforesaid section of IPX3; the water spray area is the water spray of the spray hole in the 90° arc section on both sides of the midpoint of the pendulum pipe to the sample. The sample was placed in the center of a semi-circular tube. The oscillating tube oscillates 180° along both sides of the vertical, totaling about 360°. Each swing (2 × 360°) for about 12s
Test time: Same as above for IPX3 (a 10min).
b. Sprinkler-type splash test test equipment and sample placement: Same as above-mentioned paragraph b of IPX3;
Test conditions: remove the baffle with balance weights on the equipment, and the rest are the same as the above paragraph b of IPX3;
Test time: the same as the above IPX3 b, that is, according to the shell surface area of ​​the sample to be tested, 1min per square meter (excluding the installation area) at least 5min
(5) IPX5
Method name: Water Spray Test Equipment: The inner diameter of the spray nozzle is 6.3mm
Test conditions: The distance from the test sample to the water spray nozzle is 2.5m to 3m, and the water flow rate is 12.5L/min (750L/h)
Test time: Calculated according to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area) at least 3min
(6) IPX6
Method name: Strong water spray test;
Test Equipment: The inner diameter of the nozzle is 12.5mm
Test conditions: The distance from the test sample to the water spray nozzle is 2.5m to 3m, and the water flow rate is 100L/min (6000L/h)
Test time: Calculated according to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area) at least 3min
(7) IPX7
Method name: short-term immersion test equipment and test conditions: immersion tank. The dimensions should be such that after the sample is placed in the immersion tank, the distance from the bottom of the sample to the surface of the water is at least 1 m. The distance from the top of the sample to the surface of the water is at least 0.15m
Test time: 30min
(8) IPX8
Method name: continuous diving test;
Test equipment, test conditions and test time: agreed upon by both sides of the supply and demand (sales), and its severity should be higher than IPX7.
Note: In addition, many outdoor electronic products also emphasize floating ability.
1 Anti-drip type I Vertically dropping water drops without harmful effects 2 Anti-drip type II and vertical direction 15†Drops falling within the range without harmful effects 3 Rainproof type and vertical direction within 60 degrees without harmful effects of rainfall 4 Splash-proof type Water splash in any direction No harmful influence 5 Spray-proof type Directly affected by water jet in an arbitrary direction 6 Water resistant type Directly received by water in any direction Will not enter the interior 7 Anti-dip type Under the conditions, even if it is immersed in water, it will not enter the inner 8 water type long time immersed in a certain pressure of water can still use 9 moisture proof type Humidity in the relative humidity greater than 90% can still use the international industry standard waterproof registration IP and Japan's industry standard JIS waterproof rating is close to 0-8 in the 9th grade, IP grade also made dust regulations.
Know IPIX Dust and Waterproof Degree Dust Level (The first X indicates)
0: No protection 1 : Prevent large solids intrusion 2 : Prevent medium solids from invading 3 : Prevent small solids from invading 4 : Prevent objects from entering solids larger than 1 mm 5 : Prevent harmful dust from accumulating 6 : Prevent dust from entering waterproof class completely (The second X indicates)
0: No protection 1: Water droplets drip into the housing No effect 2: When the housing is tilted to 15 degrees, water droplets drip into the housing No effect 3: Water or rain does not affect from the 60 degree corner to the housing 4: Liquid from any direction Spilled to the outer shell No harm effect 5: Flush with water without any damage 6: Can be used in cabin environment 7: Can withstand flooding for a short time (1m)
8: Immersion in water for a long time under a certain pressure Example: There is a scale or the indicator is indicated as IP65, indicating that the product can completely prevent dust from entering and flushing with water without any harm.
The IPXX class rules for waterproofing experiments
(1) IPX1
Method name: vertical drip test test equipment: drip test device Sample placement: place the sample on the rotating sample stage at 1r/min according to the normal working position of the sample, and the distance from the top of the sample to the drip outlet should not exceed 200mm
Test conditions: drip volume 10.5mm/min
Duration: 10min
(2) IPX2
Method name: tilting 15° dripping test Test equipment: drip test apparatus Sample placement: Make one surface of the specimen 15° from the vertical, and the distance from the top of the specimen to the drip nozzle should not exceed 200mm. After each face is tested, change it to another face, four times in total.
Test conditions: drip volume 30.5mm/min
Duration: 4×2.5min (total 10min)
(3) IPX3
Method name: Spray test method:
a. Pendulum-type pouring test test equipment: pendulum-tube splashing water splashing test device Sample placement: Select a suitable radius of the pendulum tube, so that the sample table height is in the position of the diameter of the pendulum tube, the sample is placed on the sample table The distance from the top of the sample to the water outlet of the sample is no more than 200mm, and the sample table does not rotate.
Test conditions: The water flow rate is calculated as the number of spray holes in the oscillating tube. Each hole is 0.07L/min. When the water is poured, the water spray holes in the 60° arc section on both sides of the midpoint of the oscillating pipe are sprayed to the sample. The sample was placed in the center of a semi-circular tube. The oscillating tube oscillates along both sides of the vertical by 60°, for a total of 120°. Each swing (2×120°) about 4s
Test time: continuous watering 10min
b. Sprinkler-type water-spraying test equipment: Hand-held water-splashing water-spraying test device Sample placement: The parallel distance from the top of the test to the nozzle of the hand-held nozzle is between 300mm and 500mm. Test conditions: The balance weight should be installed during the test. Material baffle, water flow 10L/min
Test time: According to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area), minimum 5min
(4) IPX4
Method name: splash test method:
a. Placed tube type splash test test equipment and sample placement: Same as above paragraph a of IPX3;
Test conditions: Except for the following conditions, the same with the aforesaid section of IPX3; the water spray area is the water spray of the spray hole in the 90° arc section on both sides of the midpoint of the pendulum pipe to the sample. The sample was placed in the center of a semi-circular tube. The oscillating tube oscillates 180° along both sides of the vertical, totaling about 360°. Each swing (2 × 360°) for about 12s
Test time: Same as above for IPX3 (a 10min).
b. Sprinkler-type splash test test equipment and sample placement: Same as above-mentioned paragraph b of IPX3;
Test conditions: remove the baffle with balance weights on the equipment, and the rest are the same as the above paragraph b of IPX3;
Test time: the same as the above IPX3 b, that is, according to the shell surface area of ​​the sample to be tested, 1min per square meter (excluding the installation area) at least 5min
(5) IPX5
Method name: Water Spray Test Equipment: The inner diameter of the spray nozzle is 6.3mm
Test conditions: The distance from the test sample to the water spray nozzle is 2.5m to 3m, and the water flow rate is 12.5L/min (750L/h)
Test time: Calculated according to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area) at least 3min
(6) IPX6
Method name: Strong water spray test;
Test Equipment: The inner diameter of the nozzle is 12.5mm
Test conditions: The distance from the test sample to the water spray nozzle is 2.5m to 3m, and the water flow rate is 100L/min (6000L/h)
Test time: Calculated according to the surface area of ​​the shell of the tested sample, 1min per square meter (excluding installation area) at least 3min
(7) IPX7
Method name: short-term immersion test equipment and test conditions: immersion tank. The dimensions should be such that after the sample is placed in the immersion tank, the distance from the bottom of the sample to the surface of the water is at least 1 m. The distance from the top of the sample to the surface of the water is at least 0.15m
Test time: 30min
(8) IPX8
Method name: continuous diving test;
Test equipment, test conditions and test time: agreed upon by both sides of the supply and demand (sales), and its severity should be higher than IPX7.
Note: In addition, many outdoor electronic products also emphasize floating ability.
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