The safe operation of capsule weighing scales must strictly follow standardized procedures. Today, the editor will take you to understandSafe operation steps for capsule weighing scale：
1、 Preparation before operation
1. Environmental and equipment inspection
Ensure that the scale body is installed on a flat and stable ground, away from vibration sources and airflow interference (ambient temperature -5 ℃~40 ℃, humidity ≤ 95%).
Check that the sensor, windproof cover, and removal device are intact, remove any residue from the scale pan, and disinfect the contact surface.
Verify that the output of the pressure valve is stable at 0.5-0.8Mpa (applicable to pneumatic equipment).
2. Security protection
Operators should wear sterile gloves and masks to avoid direct contact with capsules and cross contamination.
Corrosive drugs require the use of customized scales made of 304 stainless steel to prevent material corrosion.
2、 Startup and Calibration
1. Initialization operation
After powering on, perform a device self-test to confirm that there are no fault prompts on the display screen.
Force zeroing: When unloaded, click the "reset" button to ensure that the weighing platform is zeroed before starting.
2. Accuracy verification
Static calibration: Use standard weights (covering the range) to place the scale platform and adjust the displayed value to match the actual weight (tablet accuracy needs to be ≤± 0.5mg).
Dynamic testing: Verify the matching of belt speed and rejection threshold parameters through capsule samples of known weight.
3、 Production weight inspection operation
1. Parameter settings
Set the upper and lower limits of capsule weight, sorting threshold, and rejection delay time on the touch screen.
Enable anti mixing mechanism to avoid cross contamination (mandatory use of high-risk drugs).
2. Operation monitoring
The capsules are spread flat through the weighing area, and the system automatically determines qualified/defective products (such as empty capsules or insufficient dosage).
Real time monitoring of alarm prompts: If the light blocking exceeds the time limit or continues to exceed the weight limit, immediately stop the machine to check for foreign objects or mechanical faults.
Regular sampling: Manually retest the capsules in the collection warehouse for non-conforming products to verify the accuracy of exclusion.
4、 End and maintenance
1. Safe shutdown
Turn off the power according to the procedure and clean the residue on the scale pan and material contact surface.
Record the on duty operation log (including alarm events and sampling results).
2. Periodic maintenance
Perform zero calibration before daily use and perform dynamic accuracy verification every week.
Explosion proof environments (such as dust workshops) require the use of Exd/Exia grade scales and regular inspections of explosion-proof sealing.
5、 Key precautions
1. Overloading is prohibited: a single weighing should not exceed 130% of the measuring range to prevent sensor damage.
2. Anti static measures: When handling flammable drugs, the equipment should be grounded and synthetic gloves should be prohibited.
3. Personnel qualifications: Only trained and qualified employees are allowed to operate, and unauthorized modification of safety parameters is strictly prohibited.