Hitachi F 2500 Manual
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4 - 16 (f) PMT Voltage A function for controlling the voltage of the photomultiplier detector (photomultiplier tube). Select one of the following values. Changing from 400 V to 700 V increases the data value about two digits and changing from 700 V to 950 V increases it about 1 digit. • 950 V (only with F-4500) • 700 V • 400 V (g) Auto statistic cal. number Calculation is made for mean value, SD (standard deviation) and CV (coefficient of variation). Set the number...
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4 - 17 (4) Standards Clicking the Standards tab opens the window shown in Fig. 4-16. Fig. 4-16 Standards Tab (a) Sample table Sample table gives a list of standards for sample measurement or calibration curve preparation. This table contains the items listed below. NOTE: The size of the sample table columns (cells) is changeable. Bring the cursor to a boundary line between left and right table headers, and it changes into the one shown below. Now click...
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4 - 18 (b) Update By clicking this button, sample numbers are set by the entered number of samples. The displayed sample names, comments, etc. are all cleared. (c) Insert When the initial screen is opened, the Insert button becomes active. Click this button to insert data at the end of the sample list. (d) Delete Click the column of the sample No. to be deleted, and it becomes active. Now click the Delete button and the item is deleted. (5) Monitor When...
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4 - 19 (c) Open data processing window after data acquisition Select whether or not to conduct data processing after sample measurement. When selected (check mark is applied), the data is saved automatically after measurement and its file is displayed as an icon on the window. And by opening this icon, data processing such as peak detection is available. When this function is not selected, data processing can be achieved by reading out the file via File-Open. (d) Print report...
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4 - 20 (7) Output (a) Print Report A report will be printed. For printing method, refer to 4.5. (b) Use Microsoft® Excel Data will be transferred to Microsoft® Excel. For transfer method, refer to 6.13. (c) Use print generator Select this method for using the report generator (option). For usage, refer to the instruction manual of the report generator. • Include date • Include method • Include calibration curve • Include standards data • Include...
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4 - 21 4.3 Defining Your Samples When “Use Sample Table” has been set for the Analysis Method, the samples must be defined before measurement. (1) Open the monitor window and select the Sample table command in the Edit menu or click the button. (2) When the Sample Table window in Fig. 4-19 appears, fill in the blank section. For instance, if there are five samples, click the Insert button five times. Or enter “5” for Number of Samples and click the Update button....
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4 - 22 4.4 Conducting Measurement First, create a working curve, and then proceed to sample measurement. (1) Set the analysis method, and the window in Fig. 4-20 will appear provided a sample table is not used. Fig. 4-20 When a sample table is used, the window in Fig. 4-21 will appear. Fig. 4-21 4.4 Conducting Measurement
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4 - 23 (2) There are two methods of starting measurement. (a) Select the Measure command from the Spectrophotometer menu. (b) Click the (measurement) button on the measurement toolbar. (3) Standards will be measured. When finished, the window in Fig. 4-22 will appear. So click the OK button. Fig. 4-22 (4) Now measure the samples. If a sample table is not used, click the Sample button. To interrupt the measurement for other samples, click the...
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4 - 24 (6) For conducting remeasurement after completing a series of measurements, click the data area to be remeasured as shown in Fig. 4-24 and then click the Remeasure button. For saving data after remeasurement, click the End button or button. The procedure is the same when a sample table is used. Both standards and samples can be remeasured. Fig. 4-24 (7) For conducting a blank measurement, click the Blank button. (8) Data is saved on completion of measurement....
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4 - 25 (a) Standard data The measurement results of standards used for preparing a calibration curve are displayed. Fig. 4-25-1 Standard Data (b) Calibration curve A calibration curve obtained from standard data is displayed. The curve can also be traced. Concentration and photometric value are indicated at the top left of this field. (c) Sample data Sample data such as photometric value (Abs), concentration (Conc), mean value (Avg Conc), standard deviation (SD),...