User manual VAISALA VLOG 4.4

[. . . ] Veriteq > > > > > vLog 4. 4 User's Guide w w w. veriteq. com w w w. vaisala. com Copyright Copyright © 2010 Veriteq Instruments, Inc. No copying, distribution, publication, modification, or incorporation of this document, in whole or part, is permitted for commercial purposes without the express written permission of Veriteq Instruments. Veriteq, a Vaisala company 13775 Commerce Parkway Richmond, BC V6V 2V4 Canada Trademarks Veriteq Instruments, Veriteq, Veriteq vLog and Veriteq Spectrum are trademarks of Veriteq Instruments. Windows is a registered trademark of Microsoft Corporation. [. . . ] 55 Setting System Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Batch Transfer of Logger Data to the PC . . . . . . . . . . . . 56 45 Transferring Logger Files Transferring Data When you transfer data from a data logger's memory, vLog creates a copy of the data and stores it on your PC as a logger file. Logger transfers can be performed either individually (logger by logger) or in a batch (by selecting a range of COM ports). Data from secure loggers (VL loggers) will be stored in secure logger files. Data from non-secure loggers (SP loggers) will be stored in non-secure files. Though all files will have the . spl extension, files from SP loggers are non-secure and can be opened in Veriteq Spectrum. Files from VL loggers are secure and can only be opened in vLog. After inserting a logger file into vLog, you can view the information as a graph or as a tabular report. VL Loggers Only: During the data transfer process, vLog generates a Logger File Creation Report and a unique Logger File ID Number. The Logger File ID Number also appears in the Logger file and on the Graph file and provides a convenient way to track the data from the data logger to the final Graph file. Though it is not recommended, it is possible to track and verify the data by configuring vLog to ask you for a username and password when transferring data. If you select this option, vLog asks you for the password when you verify the Graph file. (For more, see Verifying a Graph - Old Method Not Recommended on page 73). Note: The transfer process does not affect or delete the data on the data logger. Before transferring data, you may want to set the transfer preferences. You should also ensure that you have write permission to the folder on the PC where you are going to save your transferred files. Setting Transfer Preferences You can configure the default file name format for the Logger file. Though it is not recommended, you can also configure vLog to prompt you for a username and password when you transfer data. You can configure vLog to display a Logger File Creation Report after the transfer. This report displays all the details of the transfer. It can be printed and it provides a secure and verifiable link between logger files and printed records. This report is only produced for individual logger transfers, not for batch transfers. [. . . ] The serial communication ports on the computer are commonly referred to as COM1, COM2, COM3, and so on. Serial ports exchange data sequentially, one unit at time. The ability of a sensor or measurement instrument to maintain its performance characteristics over a specified period of time A temperature-sensing element (a thermally-sensitive resistor) composed of sintered semiconductor material that exhibits a large change in resistance in proportion to a small change in temperature. The relationship between temperature and resistance is approximated for most thermistors by the Steinhart-Hart equation. [. . . ]