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Designed in accordance with the National Standard of the People's Republic of China (Test Method for Waterproof Asphalt Membrane) (GB328.4-89), it is a special test equipment for testing the water absorption of petroleum asphalt paper-based felt and waterproof felt membrane. At the same time, it can also be used for various water absorption tests of tiles.
Daily maintenance of the anti-piercing instrument:
When using the device, its input signal or its external load should be limited within the specified range. and overload operation is prohibited.
Optical and chemical instruments and their accessories should be handled with care to avoid vibration.
Never touch the optical glass surface with bare hands. Do not wipe off dust and dirt with your hands or a rag, use special products or special tools to remove it.
The device isnot suitable for operation and use in a magnetic or electric field and shielding measures must be taken to prevent device damage or reduce measurement accuracy.
Mechanical instruments and devices must be operated without load before use to ensure that there is no error before loading. Lubricate before use and wipe after use.
The structure and functional principle of the puncture protection tester:
Structure:
The instrument consists of a Base and a pad 1. Block 2. Punch rod, tube with scale, positioning mark, hook, top cover, controller assembly, weight, locking tube bolt, pressure plate and column.
Controller components include but are not limited to: the bottom bottom of the controller, the controller screw, the controller spring, the controller top cover, the controller slider, andthe control screw.
Working principle:
Use the controller assembly to lift the weight and fix it at the required height. The height can be read from the positioning mark Press the control screw, the spring of the controller is compressed;
The round hole of the controller slider is in line with the round hole of the controller top cover and aligned with the round hole on the bottom bottom of the controller. At this point the heavy hammer falls and the impact punch acts down on the sample plate. Lift the heavy hammer and punch and take out the sample plate to observe the sample perforation resistance.
How to use:
Before use, check whether the positioning mark is aligned with the zero line, put the pad and pad on the base and put it on Lower the weight. watch youe whether the scale on the positioning mark coincides with the zero line on the metal tube. If there is a deviation, adjust the two screws of the positioning mark.
Set the weight to the specified drop height of 300mm and secure with the control screw. According to 5.2 of the GB12952--91 standard, freely distribute the E-sample cut on the support plate ;
Place the prepared sample in the center of the base of the instrument, press the control screw, the weight falls freely, hitting the specimen's plunger, and the plunger transmits the force of impact to the specimen.
Lift the heavy hammer, the hook on the heavy hammer will be automatically hooked by the controller, lift the punch by hand, take out the sample and checkTo check if the sample is perforated, test three samples.
If there is no obvious perforation, carry with youPerform a watertightness test on the sample using the device shown and place the round glass tube vertically in the center of the sample's puncture test point.
Pour the colored aqueous solution into the glass tube and check the filter paper after standing for 16 hours. If the penetration phenomenon indicates that the sample has been perforated.
