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The last edit to this post was made by tiandiyi*an on 2017-10-20 at 07:11. 1. Adjustment of the sensor’s zero-point output voltage in static condition: After installing the ICS-ST explosion-proof belt scale and connecting the wires as specified in the diagram, power it on. Taking a scale frame with a capacity of 17A as an example, supply power to both weighing sensors. Do not connect the two sets of signal wires together yet; instead, use a multimeter to measure the millivolt signal voltage of each sensor. Adjust the screws located beneath the sensors so that the millivolt voltages of both sensors are equal (tightening the screws increases the voltage, while loosening them decreases it). The same applies to the scale frame with 4 sensors: adjust the millivolt voltages of the 4 sensors to be equal, then connect them together through a junction box and feed them into the main motherboard. Make sure to leave a gap between the upper beam and the scale frame, as stated in step 2 of the installation notes for the explosion-proof belt scale above. Attached wiring diagram: 2. Overview of parameter settings (for details, refer to the installation manual for the explosion-proof belt scale). Reset to factory settings; (2) Speed parameter settings; (3) Sensor range settings; (4) Roller spacing settings; (5) Angle of inclination of the scale frame; (6) Selection of scale frame model; (7) Modification of communication baud rate; (8) Setting of scale frame number. Settings for upper and lower load limits; (10) Setting of the number of times abnormal values occur. 3. Zero-point calibration during dynamic no-load conditions: (1) Determine the time required for one full cycle of operation, that is, the time it takes for the belt to complete one rotation, measured in seconds. Alternatively, mark points on the belt and use a stopwatch to record the time taken for one full cycle once the belt’s speed becomes stable. If it is 110 seconds per cycle, then set it to 110 seconds. Operation method: Menu button — Enter password — OK button — Button 2 for zero calibration — Button 3 to enter values. ⑵The number of rotation cycles is usually set to 1; if it is set to 3, after calibration the main unit of the explosion-proof belt scale will store the average zero value over those 3 cycles (once the zero-point calibration is complete). ⑶Turn on the belt before calibration, and wait until the belt is running at speed for a while and has stabilized before starting. Once calibration is complete, the main unit of the explosion-proof belt scale will save the zero value. Operation method: Menu key — Enter password — Confirm key — Key 2 for zero calibration — Key 2 — Confirm key; the message “Calibrating…” will be displayed. Once calibration is complete, press the menu key to return. ⑷: Repeat step 3 above, “Automatic Calibration”. There are three times in total; record the zero weight after each calibration, calculate the average value, and manually enter the zero weight. Operation method: Menu key — Enter password — Confirm key — Key 2 for zero calibration — Key 1 for manual calibration, enter the value, then use the confirm key to save it. Settings for zero-point calibration of operating time. Note 1: Once the explosion-proof belt scale is operating properly, it is recommended that the installer change the password. 2: The explosion-proof belt scale starts measuring the weight of the material only when it enters the operation interface, and it can also communicate with the host computer only in this interface. 3: Assuming that the normal belt flow rate is n (tons per hour), the belt speed is v (meters per second), and the length of the scale frame is L (meters), then the weight of the weights to be used, m (tons), is equal to n*L* / (v*3600). For a 17A scale frame, if weights of the same value need to be hung at 8 locations, the weight of each individual weight chosen should be as close as possible to one-eighth of m. 4: After code hanging calibration or chain code calibration is completed, the approximate value of the instantaneous flow rate can also be obtained using the aforementioned formula. That is, n = m * v * 3600 / L. This formula can be used to determine whether the calibration result is correct.