Inspection items before using the weighing scale:

1. Contact area: Confirm that there is no contact between the front and rear conveyor belts.

2. Set parameters: Confirm whether the standard value, upper limit, and lower limit values are set correctly.

3. Measurement accuracy: Transport the same measuring product from the auxiliary conveyor belt more than 20 times to confirm whether its fluctuation is large.

4. Confirmation of testing range: Only transmit the main product, and then upload the test piece onto the main product to confirm "no testing" and "testing" respectively.

5. Remove the action and confirm the correct removal of normal, overweight, and underweight products.