User manual VAISALA SPECTRUM 4.0

[. . . ] Veriteq > > > > > Spectrum 4. 0 User 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, and Veriteq Spectrum are trademarks of Veriteq Instruments. Windows is a registered trademark of Microsoft Corporation. [. . . ] In the Confirm System Time window, check the system time. If the time shown is incorrect, click Cancel, and then use the Windows Control Panel to make the appropriate changes. See Setting System Date and Time on page 41. Note: The PC's date and time must be accurate when clearing a data logger's memory or the date and time values in future logger files may be incorrect. After you click OK, a confirmation window opens. 3. Click OK. 32 Veriteq Spectrum 4. 0 User's Guide Mounting Data Loggers Because they are small and light, you can easily mount Veriteq data loggers in the field using a variety of techniques including Velcro strips, double-sided tape, duct tape, and magnetic strips. In harsh environments, place the data logger in a standard industrially-rated enclosure, and run external sensors and probes from the enclosure using special fittings in the openings. Some tips for placing the data loggers: Ventilation: Don't obstruct the air passage holes in the logger. There should be a clear path for the air to get to the internal sensors (if they are used or available). Vibration: Excessive vibration can knock the unit off its mounting. If the location is subject to excessive jarring or vibration, mount the logger more securely. Temperature: Excessive temperature (low or high) can affect adhesives. Moisture: Moisture can also affect the adhesive durability. Permanence: Make sure the mounting location is permanent for the duration of the recording period. Public access: If the logger location is too visible, people may interfere with the readings. Make sure it is not too accessible. Using External Temperature Probes Veriteq SP 1000, 1016, 1400, 1416, and 1700-series data loggers have external temperature channel(s) for use with an external temperature probe. Using the external temperature probe enables you to collect data from hard-to-get-at locations, such as in duct work or under pipe insulation. You can use an external temperature probe with these data loggers, provided the probe was calibrated with the data logger. To use an external temperature probe: 1. Enable the desired channel on the logger (see Enabling and Disabling Logger Channels on page 27). If you do not need to monitor from the internal temperature sensor, disable it to conserve memory. Note: You can disable most unused channels - external probe or not - to save data logger memory. One exception is the internal temperature channel on SP-1700 data loggers. 33 Getting Started 2. Attach the temperature probe to the connector on the data logger. 3. [. . . ] The sample interval applies to all enabled channels on the logger. You may want to occasionally change the sample interval on the logger because: · Faster sample rates may be required by the application. · You need to record readings over a longer duration. · You want to minimize the collection of unnecessary data. [. . . ]