Explosion - proof mark: Ex i b IIC T4 Gb Explosion-proof Vibration Meter WA - V166E can conduct vibration measurements on rotating machinery and the like. They are able to measure the effective values of vibration acceleration and vibration velocity, as well as the peak - to - peak value of displacement. In the velocity measurement mode, the instrument will automatically analyze and issue alarms according to the ISO10816 standard, and it can measure temperature through infrared. It features easy operation and portability. It is mainly used for the rapid inspection of equipment such as steam turbines, hydroturbines, motors, fans, pumps, compressors, and machine tools, and can also be applied to the preventive inspection of mechanical equipment failures. The measured values of the vibration measuring instrument are directly displayed on the liquid - crystal display, which is suitable for on - site equipment operation and maintenance personnel to monitor the equipment status. They can detect problems in a timely manner to ensure the normal and reliable operation of the equipment. The instrument is equipped with an AC signal output socket for the recording and analysis of vibration signals. During measurement, just hold the instrument, touch the tip of the instrument to the measured object, and press the OK/MEAS button.