Winner2000Laser particle size analyzer, as a domestically produced cost-effective particle size detection equipment, is widely used in fields such as electronics and materials science. To ensure its measurement accuracy and long-term stability, a systematic daily maintenance system needs to be established. Develop maintenance plans from four dimensions: equipment cleaning, component maintenance, environmental management, and software maintenance.

1、 Equipment cleaning and pollution prevention management

surface cleaning

After daily use, dip a microfiber soft cloth into it75%Wipe the instrument casing with ethanol solution to avoid using a damp cloth to directly wipe and prevent liquid from seeping into the interior. Focus on cleaning the dust prone areas such as the operation panel and sample tank interface to prevent electrostatic adsorption particles from affecting circuit stability.

Deep cleaning of sample system

Wet unit maintenance: Rinse the circulation pipeline with deionized water every week, targeting the hardness of the water quality>200mg/LThe region adopts monthly1-2mmParticle size quartz sand is used for pipeline backwashing to remove scale deposits. The ultrasonic dispersion chamber needs to be disassembled and cleaned quarterly to prevent sample residue from causing a decrease in ultrasonic efficiency.

Sample pool treatment: Immediately wipe the pool wall with an ethanol cotton swab after each test. For organic sample contamination, acetone soaking and ultrasonic cleaning can be used5Minutes, avoid cross contamination.

Optical system protection

Use specialized lens paper to wipe the laser emission in a single direction every month/Receiving window, it is strictly prohibited to wipe back and forth to cause scratches. When fog is found on the window, nitrogen should be used in a dry environmentair gunBlow and, if necessary, contact the manufacturer to replace the optical film layer.

2、 Preventive maintenance of key components

Distributed system calibration

Check the power attenuation of the ultrasound generator every quarter40kHzOutput power below frequency30WWhen necessary, the piezoelectric ceramic transducer needs to be replaced. The mixing motor needs to be filled with food grade silicone grease every month to ensure0-3000rpmSpeed linearity error<1%.

Replacement of flow path components

The inlet filter screen of the circulating pump500Clean once every hour, when the flow rate decreases to6L/minReplace the pump membrane when needed. sample poolOCircle every200After the second test, it needs to be replaced to prevent liquid leakage from affecting the circuit board.

3、 Environmental Control Standards

Temperature and humidity management

The operating environment of the equipment needs to be maintained20-25℃, humidity<65%RHConfigure a temperature and humidity recorder that automatically triggers an alarm when environmental parameters exceed the standard. At this time, the test should be paused and dehumidification should be started/Heating equipment.

Shock and dust prevention

The instrument needs to be placed on a separate marble table with isolated frequency>5HzThe vibration. Use particle size before daily operation>5MmThe particle counter detects the cleanliness of the workspace when ≥0.5Mmparticle count>350Ten thousand grains/mWhen the pressure is low, the laminar flow purification system needs to be activated.

4、 Software and Calibration Management

System Maintenance

Perform monthly software integrity checks and verify the accuracy of analysis algorithms using validation tools provided by the manufacturer. When it appearsD50Value repeatability error>0.5%When necessary, the calibration file needs to be reloaded.

Metrological Calibration

Used every six monthsGBW(E)120011Full range calibration of standard particles, with a focus on verification0.6MmThe10MmThe100MmThe accuracy of three feature points. The calibration report should include information such as environmental parameters, standard substance certificate numbers, etc.

By implementing this maintenance plan, it is possible toWinner2000The measurement repeatability error of laser particle size analyzer is stably controlled within<0.5%The equipment's fault free operation time has been extended to8000More than hours. It is recommended to establish a maintenance file to record information such as maintenance items, time, and replacement parts for each maintenance, providing data support for equipment lifecycle management.