The weightless scale instrument is softly connected and separated by gravity. Although the unloading electric vibration machine is also softly connected, its gravity and the weighing bucket are supported by three tension sensors, and are connected by the material column in the weighing bucket.Weightless scale instrumentThe working principle is to first feed material to the weighing hopper from the feeding electro-vibration machine, and stop feeding when the given upper limit of the given weight of the silo is reached. When the unloading reaches the given weight lower limit, stop unloading; repeat the action. The flow rate of the material is determined by the weight of the material lost in the silo, so it is called a weight loss scale.

The weightless scale instrument is controlled by a multi-channel metrological verification raw material, which belongs to static data weighing. The whole process of metrological verification: feeding and blanking is a working cycle time. The raw materials are sampled regularly, and the instantaneous net weight is calculated by subtracting the initial weight from the initial weight, and then compared with the preset value. When the comparative value is equal to the preset value, the command data signal is sent out, and the feeding is carried out. After the raw material feeding is carried out, the computer sends out the The whole process of metrological verification is the same as above, the difference is that after the blanking is carried out, the total flow of blanking is compared with the given value, and the error is calculated and stored, and the next cycle time is reduced and compensated to ensure the total flow rate. Accurate flow. In this way, continuous raw materials can be maintained day after day. This method of measuring and verifying raw materials will not be harmed by tare weight and silo sticking materials, and has the functions of automatic tare weight removal and automatic zero calibration.

The weightless scale instrument uses a self-stabilizing linear amplifier circuit, which will increase the weak data signal by hundreds of times, considering the connection between the sensor and the computer. If the amplifier causes a failure, the system will not be able to work. The system software analog display information is abnormal. The fault is usually the amplifier DIP switch is loose, and it can be repaired by turning it several times. If it is still loose, it should be replaced. If it is damaged, check the DC power supply of the amplifier, check the operational amplifier block and electronic components. If there is doubt about the characteristics of the amplifier, the amplifier function test should be carried out. mV meter monitoring, connected to the input terminal of the weightless scale meter. The amplifier is adjusted to 700 times, the digital multimeter is dialed in the DC 10V gear, and the output terminal of the net weight intelligent transmitter is connected. The proportion of the displayed information should be 0-7V. If the display information of the weightless scale instrument does not show the proportion, or cannot reach the magnification ratio, it indicates that the smart transmitter is faulty, and inspection and maintenance should be carried out.