How is the temperature measurement instrument of the thermogravimetric analyzer calibrated?
The thermogravimetric analyzer uses the cooling method to measure the specific heat capacity of solid-liquid materials such as rock and soil. Due to the inhomogeneity of the rock and soil, the representativeness of the samples was fully considered in the number of samples taken. By inserting a thermocouple in the center of the sample, the heat transfer process of the sample can be accurately measured. By comparing with the value of the water temperature thermocouple, the temperature balance state after heat transfer can be judged. The device uses high-precision thermocouples and temperature measuring instruments to ensure measurement accuracy.
Features of thermogravimetric analyzer:
The instrument can analyze multi-component gases. Among them, the gas measurement of carbon monoxide, nitrogen oxides, sulfur dioxide, and oxygen is based on the principle of electrochemical sensing. The instrument is equipped with a temperature sensor, which can measure the temperature of flue gas. And according to user requirements to increase the air excess coefficient, carbon dioxide concentration, combustion efficiency and other parameters.
The thermogravimetric analyzer adopts microprocessor control mode, and is equipped with a large-screen LCD display and RS232 interface, one-button control, and the Chinese interface is easy to operate. With a network, data transmission can be implemented. It is suitable for the detection of the concentration of flue gas emission from the environmental protection department, electric power, chemical industry, metallurgy, boiler, kiln, gas emission and automobile exhaust concentration.
1. The instrument has advanced manufacturing technology, good shockproof performance and long service life.
2. Equipped with a pre-filter and a fine filter to effectively filter out impurities in the exhaust gas.
3. 250mm or 500mm sampling conduit, with gas-water separator attached,
4. Real-time detection of condensed water, timely and automatic notification to manually discharge accumulated water.
5. It can be powered by 220V AC or the battery of the car, which is very suitable for working in the laboratory and in the field.
Zero point adjustment of thermogravimetric analyzer temperature measuring instrument:
1. Insert the cold end (blue end) of the water temperature thermocouple and the sample thermocouple into the ice water insulation barrel, add water into the test insulation barrel, turn on the mixer, put the sample thermocouple into the position of the water temperature thermocouple, Connect the wires between the thermocouple and the meter, and power on the meter for about half an hour.
2. Observe whether there is a difference between the two temperature values. If there is a difference, you can modify the Sc parameter of the instrument. The specific operation is as follows.
3. Record the difference between the temperature of the sample thermocouple and the water temperature thermocouple, press the "0" key of the sample temperature instrument and hold it for about 2 seconds to enter the parameter setting state. Press the "0" key in the parameter setting state, the instrument will display each parameter in turn, the parameter lock LOC setting 808 enters to modify the parameters, press the "0" key continuously to display the Sc parameter, and use the "▲" and "▼" keys to modify the parameter value, Eliminate the difference between the sample thermocouple temperature and the water temperature thermocouple.
