Heraeus carbon analyzer

Heraeus carbon analyzerindustrial applications
Multi Lab uses appropriate measuring cups and applies thermal analysis methods to test various parameters in cast iron.
The following items were determined through thermal analysis: pouring temperature (PEAK), liquidus temperature (TL), and solidus temperature (TS). The liquid phase point and solid phase point form the basis for calculating various parameters. These parameters can be calculated using various formulas described in later chapters:

Multi Lab can automatically measure undercooling based on the cooling curve. When undercooling occurs, the points on the cooling curve will be measured, and the * point is the liquidus temperature TL. It is used to calculate two elements, namely carbon equivalent CEL and eutectic SC. The second point is the small undercooling TMIN.TMIN and 1150℃The value is used to calculate the temperature difference Δ T:
ΔT=1150—TMIN
The third point is that TMAX.TMIN and TMAX are used to calculate the measured temperature difference Δ TM:
ΔTM＝TMAN—TMIN
Multi Lab can be used not only for thermal analysis, but also for measuring immersion temperature. By using the combination key (CLR) (5), the temperature display window will be covered, making it difficult to see the analysis display clearly. When the window is not visible, the measurement of immersion temperature can still be carried out. Because for this analysis, the measurement process can be divided into three stages: when the measured temperature exceeds the set initial value, it will display "MEAN",Heraeus carbon analyzerAfter the measurement is terminated, "END" will be displayed after two seconds.
The dual analysis measurement system can be combined in Multi Lab for synchronous determination of gray mouth and white cast iron solidification. Use a suitable Quik Cup sample cup. Multi Lab can calculate the above elements and perform undercooling measurements at the same time. The dual analysis system requires the installation of an additional preamplifier board. Multi Lab can automatically distinguish whether an additional preamplifier board is installed properly, as well as the channels from which the subcooling temperature and analysis temperature come. The various signal transmission functions are similar to those in conventional analysis: in order to keep Multi Lab in the "READY" state, the two measurement inputs must be in the idle state, that is, one sample cup must be installed on each sample cup support. After both measurement channels have completed the analysis, "END" will be displayed. In the following chapter, a more detailed description of double analysis measurement will be provided.
By using Quik Nod spheroidization cups, Multi Lab can also measure spheroidization rates. When the function switch of Multi Lab Quil Cup is turned to level 4 (Quality4), the balling rate measurement is activated.In this measurement, signal transmission is different from conventional analysis. The result indicating the degree of sphericity is that all percentage values expressed in percentage form are divided into GOOD/AVERAGE/POOR.
The limit values for calibrating GOOD/AVERAGE/POOR can be set at the bottom of a menu. At the end of the measurement, the measurement results will be displayed as follows through the signal transmission function of the measurement stage of the analysis channel:
READY "(green) flashing" GOOD "(good) range
Measurement "(yellow) flashing" AVERAGE "(general) range
END "(red) flashing" POOR "(normal) range

equipment debugging
After connecting the AC cable and sample cup holder, Multi Lab can be put into operation after an initial period of less than one minute.
After turning on the power switch of the device, the program will perform several internal trial runs. After about three seconds, a screen will display a representation of the system, with the version number of the software displayed in the bottom right corner.

， Perform further system experiments using the Multi Lab program. After successfully completing these experiments, the following screen will be displayed on the monitor for approximately 5 seconds.