Calorimeter reverse calibration of the specific operation

First press the calorimeter's “settings” button to enter the setting interface. The first “system” has four parameters: E, A, K, and Q. It is the data that you just finished calibration input, do not touch it. , directly move the cursor keys to modify all the parameters in the “coal” and “raw material” items to 0.000 respectively according to the “effective” key. (Actually, you have changed to 0.0000 in the previous calibration, you also Do not move, tell you this step is to make you understand that benzoic acid is not containing hydrogen sulfide water, because, usually when you do coal, you must enter these data, if you want to do reverse calibration in any gap, you must To delete all the sulfur hydrogen water data in the coal, it is necessary to delete all the parameters in the “Setting” screen of the calorimeter. After all the parameters have been entered, press the “Valid” button again to exit the “Setting” screen.

Press the Calorimeter “Measurement” button again. Note that the reverse calibration is the same as usual for coal. The only difference from the coal is that the sulfur hydrogen water in the set key interface is 0.000, then press “1. "Select coal, enter the number, package weight 0.000, (do not want to change the number directly by the effective key will be over), flaky benzoic acid weight can be, so far, all the input is completed only waiting to print the results.

Finally, compare Qb with benzoic acid in the print results. The two errors do not exceed 120 J, ie, reach the national standard. The calorimeter can be used normally. If the error is too large, it needs to be recalibrated.