I. Use of environmental regulations

The calorimeter has strict requirements on the use environment. First, the ambient temperature needs to be stable between 15-30 ° C. Excessive temperature fluctuations will affect the accuracy of the instrument test results and may lead to data deviations. Second, the ambient humidity should be controlled at 40% -60%. Excessive humidity can easily cause moisture in the internal components of the instrument, causing failure and shortening the service life of the instrument. At the same time, the use place should be kept away from strong electromagnetic interference sources, such as large motors, transformers, etc., to avoid electromagnetic interference affecting the normal operation and detection accuracy of the instrument.

II. Operator qualification requirements

The personnel operating the calorimeter must have professional qualifications. On the one hand, they need to go through a systematic training on the operation of the calorimeter to be familiar with the working principle, operation process and precautions of the instrument. The training content should cover the basic structure of the instrument, the detection principle, sample processing, data reading and analysis, etc. On the other hand, the operator should hold the relevant employment certificate to prove that they have the ability to operate the calorimeter independently, and can strictly follow the operating specifications for testing to ensure the reliability and accuracy of the test results.

III. Sample handling regulations

Sample processing is a key link in calorimeter testing. Samples must be representative and can truly reflect the calorific value characteristics of the substance to be tested. When sampling, it is necessary to strictly follow the relevant standards and specifications to ensure the uniformity and stability of the sample. For solid samples, pre-treatment such as grinding and drying is required to make them meet the specified particle size and humidity requirements; for liquid samples, attention should be paid to preventing volatilization and pollution to ensure the integrity of the sample. In addition, the weighing of the sample must be accurate, using a balance with accuracy that meets the requirements, and operating according to the standard weighing method to avoid affecting the test results due to weighing errors.

IV. Instrument calibration requirements

In order to ensure the detection accuracy of the calorimeter, regular calibration is essential. Calibration work should be carried out according to the specified cycle. It is generally recommended to calibrate at least once every quarter. If the instrument is used frequently or the detection environment changes greatly, the calibration cycle can be appropriately shortened. Calibration requires the use of standard substances, such as benzoic acid with known calorific value. Operate in accordance with the instrument calibration operating procedures, record the calibration data, and compare the calibration results with the standard value. If the deviation exceeds the allowable range, the instrument should be adjusted and repaired in time until the calibration is qualified before continuing to use.

V. Safety protection regulations

There are certain safety risks in the use of the calorimeter, and safety protection must be done well. Operators should wear protective glasses, protective gloves and other personal protective equipment to prevent samples from splashing, instrument burns and other accidents. At the same time, obvious safety warning signs should be set around the instrument, and irrelevant personnel should be prohibited from approaching. When using flammable and explosive samples, relevant safety regulations should be strictly observed to ensure that the operating environment is well ventilated, away from fire sources and heat sources, and to prevent explosions and fire accidents. In addition, regular safety inspections of the instruments should be carried out to detect and eliminate safety hazards in a timely manner, and to ensure the personal safety of the operators and the normal operation of the instruments.