Precautions for Using and Daily Maintenance of the Asphalt Penetration Tester

　　The asphalt penetration tester is simple and convenient to use, exhibits low temperature drift, and is suitable for a wide range of environmental conditions. It achieves automation and digitalization of the testing process, providing China’s road, municipal engineering, construction, petroleum, and other sectors with an automated asphalt testing instrument that features high precision, excellent stability, and reliable performance.
　　Purpose of the Asphalt Penetration Tester:
　　This instrument is primarily used to determine the penetration of viscous petroleum asphalt, viscous shale asphalt, and liquid petroleum asphalt, as well as the residue remaining after distillation or emulsification of asphalt materials.
　　The penetration of asphalt is the depth to which a standard needle of specified weight and size penetrates vertically into the specimen under prescribed time and temperature conditions.
　　Precautions for using the asphalt penetration tester:
　　1. When using the equipment, carefully read the technical manual, familiarize yourself with the technical specifications, operational performance, usage methods, and precautions, and strictly follow the step-by-step instructions provided in the instrument’s user manual.
　　2. Personnel using the equipment for the first time must operate it under the guidance of a trained operator and may only perform independent operations once they have become proficient.
　　3. The instruments, equipment, and materials used in the experiment should be arranged reasonably and neatly, facilitating operation, observation, and data recording.
　　4. Before powering on electronic instruments and equipment, ensure that the supply voltage matches the instrument’s specified input voltage. Instruments and equipment equipped with three-wire power plugs must be plugged into power outlets with protective grounding to ensure safety.
　　5. When using the device, its input signal or external load should be kept within the specified range; overloading is strictly prohibited.
　　6. Optical and chemical instruments and their accessories should be handled with care to avoid vibrations. Never touch the surfaces of optical glass with your hands. If dust or dirt is found, do not wipe it off with your hands or a cloth; instead, use specialized cleaning products or tools designed specifically for this purpose.
　　7. The equipment should not be operated or used in magnetic or electric fields; shielding measures must be taken to prevent damage to the instruments and equipment or to avoid a reduction in measurement accuracy.
　　8. Before using mechanical instruments and equipment, be sure to run them under no-load conditions first to ensure they are free of malfunctions before applying any load. Lubricate them before use and wipe them clean after use.
　　Daily Maintenance and Care Instructions for the Asphalt Penetration Tester
　　1. Instruments and equipment must not be disassembled, modified, or taken apart for use at will. If it is indeed necessary to develop new functions or carry out renovations and upgrades, approval procedures must be followed according to the hierarchical management authority before implementation.
　　2. Regularly maintain and service equipment, and store it in a dry, well-ventilated area. For instruments and equipment that will be left unused for extended periods, power them on periodically to prevent moisture and mold from damaging the equipment and its components.
　　3. Establish a regular verification and calibration system for key technical indicators of large-scale, high-precision, and valuable equipment to ensure that the equipment maintains its proper technical specifications. Keep accurate records of all usage activities.