Automatic moisture analyzerIt is an intelligent analytical instrument used for rapid and accurate determination of moisture content in samples, widely used in various industries such as food, pharmaceuticals, chemicals, grains, feed, plastics, tobacco, etc. The core principle is usually based on the heating weight loss method (i.e. pyrolysis weight loss method), which uses a built-in high-precision weighing sensor and a controllable heating system to heat the sample at a constant temperature or step by step under program settings, causing the moisture to evaporate. Then, the moisture percentage is automatically calculated based on the change in mass before and after heating.

It integrates microprocessor control, high-sensitivity electromagnetic force balance sensor, efficient halogen or infrared heating source, and intelligent operation interface, with the advantages of rapid temperature rise, precise temperature control, good repeatability, and easy operation. The entire testing process does not require manual intervention, and can be automatically completed within minutes from weighing, heating, drying to result calculation and data display, significantly improving detection efficiency and accuracy, avoiding the drawbacks of traditional oven methods such as long time consumption and large human errors.

　　Automatic moisture analyzerThe usage method is as follows:

1. Preparation work:

Check the instrument: Ensure that the instrument is installed correctly and in normal working condition, and check whether the power supply, heating system, condensing system, and computer interface are normal.

Calibration instrument: Use standard moisture samples or solutions for calibration to ensure measurement accuracy.

Preparation of samples: The sample quality should be uniform, reducing surface moisture absorption, and the particle size and shape should meet the requirements of the instrument. Suitable containers should be used for powder, granular or liquid samples.

Select measurement mode: Select direct moisture measurement, titration measurement, and other modes according to the measurement requirements.

Start software: Turn on the instrument power, start the software interface, and enter test parameters (such as target moisture content accuracy, test temperature, time, etc.).

2. Select measurement method and set parameters:

Select measurement method: Choose appropriate methods such as evaporation as needed, set measurement time, temperature, and standard reaction mode (if necessary, set relevant formulas or detection conditions).

Choose a measuring container: Select a suitable clean and dry container based on the sample type, and use a dedicated micro sample bottle or other container that can hold the instrument.

Weighing samples: Accurately weigh a certain amount of sample (usually a few milligrams to a few grams) and add it to a container.

Place the sample: Place the container containing the sample in the measuring position of the instrument, ensuring good contact with the heating zone.

Set test parameters: Set parameters such as sample weight, target moisture content, temperature, testing time, calculation method, etc. on the control panel or software interface.

3. Initiate testing and monitoring process:

Start Test: Click the "Start" button, and the instrument will automatically heat the sample, control temperature and humidity changes, and perform moisture evaporation or measurement.

Monitoring and testing: The instrument displays real-time data (such as water evaporation rate, current water content value), monitors the working status, and ensures no abnormalities.

4. Obtain and analyze results:

Obtain results: After the test is completed, the instrument automatically stops and provides the moisture content measurement result for data analysis, and the final result is displayed on the screen.

Export results: Export the test results as a table or chart, record it in the system or print it out.

Verification results: Carefully verify the test results to ensure accuracy. If there are any abnormalities, the measurement parameters can be retested or adjusted.

5. Precautions for operation:

Sample processing: The sample should be dried as much as possible to avoid the influence of external moisture. Suitable containers and measuring ranges should be selected for different substances, and attention should be paid to solvent volatility for liquid samples.

Regular calibration: Use standard moisture liquids or samples with known moisture content to calibrate the instrument regularly to ensure measurement accuracy.

Temperature control: Ensure stable temperature control during the heating process. Excessive temperature may cause sample decomposition or incomplete evaporation of water.

Record parameters: Record each measurement parameter (such as sample number, test temperature, humidity, final moisture content, etc.).

Instrument maintenance: Regularly check the heating system, condensing system, and weighing part of the instrument to avoid damage caused by prolonged use.

6. Problem Investigation and Resolution:

Unstable test results: This may be due to uneven sample distribution, changes in external humidity, or instrument calibration issues. It is necessary to check the sample and instrument settings.

High or low measurement value: Check if the temperature control system and heating system of the instrument are normal to ensure that the sample size is appropriate.