How to improve the precision of weightlessness scale?
1. Application of weightlessness scale. Weightlessness scale is an automatic weighing equipment that completes high-precision continuous quantitative analysis and feeding according to static data. It can reliably, accurately and steadily feed dry and dispersed liquid, powder, granular, flake and other raw materials, reduce the consumption of raw materials, and improve the consistency of the mortar of the mixture. (Measurement accuracy reaches 0.2%) Second, the equipment and principle of weight loss scale. 1. The programmable controller server used in this new project is LS21-18MTH-1WT. PLC has 8 safe channel data input/10 safe channel transistor output. Multi-channel weighing/distortion/working pressure/supporting mixed server with 24-bit screen resolution. LS21-E4P(T) control module, platinum thermal resistance or thermal resistance type optional temperature expansion control module. The AC servo motor is LS11-15060A servo controller + motor. 2. The whole process of feeding: When the net weight in the silo is lower than the set offline value, open the feeding valve to lock the motor rated power and feeding rate. When the net weight in the silo is greater than or equal to the set online value, Stop feeding. (Or terminate when the set larger battery charging time is exceeded) After the weight sensor is stable, the rated power of the motor and the battery charging rate will be turned on. 3. The operation process of the weightless scale: the weight sensor collects the total flow data in real time and submits it to the PLC for solution. After calculation, the parallel processing data information is transmitted to the touch screen for interface display information and data communication on the one hand, and on the other hand, the rated power of the motor is manipulated to achieve the goal of real-time adjustment of the total flow. 3. What is the key part of the weightlessness scale? The marketing and promotion staff who must have a sample program flow are: LSJS24 Remarks name: Weightlessness weighing program flow. 1. LS21-18MTH-1WT type programmable controller. 2. LS21-4P(T) type swelling control module (used to check temperature) 3.3 servo controller. LS11-15060A+a motor 4. A 7-inch Tianshan Tongtai touch screen 5. Weight sensor. Fourth, the liquid weight-loss weight-loss scale accurately measures the video of the rounding scene (the mobile phone screen is small, and the video can be played on the computer) first set the total flow, otherwise it is not easy to start. Before starting, check whether each gate valve is open to prevent damage to the equipment. Answer: The calibration can be carried out according to the calibration instructions. b: Basic parameters. 1. Steady flow time, the current rate will be automatically saved when the program is executed, and stored in the steady operation rate. At the next start, you can enter the changed value into the total flow start value or key in the value, so that you can quickly complete the smooth operation rate and prevent the consumption of raw materials. 2. Limit the feeding time to prevent the deviation caused by long-term feeding due to the destruction of the sensor, the common failure of the feeding relay or the overflow of raw materials. 3. The adjustment method can calculate the total flow according to the weight or (rate adjustment can be used to avoid the destruction of the weight sensor in an emergency) C: The main dialog box instantly displays the information you want to query. d: Common problems: Some liquids have poor circulation, which may cause liquid to flow back. At this time, the liquid must be heated or a pressure relief package must be added in front of the pump. According to the need to connect wire connectors and shielded cables. Prevent electromagnetic induction and electrostatic interference.