But above all, the thing is supposed to record the data and provide for evaluation. The recording works - you can set an interval and select desired four periods during which the collected data to be recorded. However: All of these settings can be made via PC not on the device, but only with the supplied software. However, is simply a zero number.
My first problem: Under Windows 7 64bit the connected device has been detected only in exceptional times, under XP, it went against tidy. Something should really no longer happen: 64bit Windows XP has been around for hours, and Windows 7 is now available for quite a while in the market. In order to work with the newer version of Windows with the device at all, I have found me a more recent version of the software. The produced during installation but an error message - then she ran after all, however, only in English. Well ...
The program reminds the design of Windows 3.1 and is somewhat hakelig to use. It annoys me, for example, that I often get after you connect the device no graph display. I have to then delete the newly already downloaded from the device data on the PC and re-read (which lasts ...). Another problem: You indeed can control the chart single measurement time points with the mouse and then read the relevant data, but it often works only with coaxing and some mouse wobbling. The collected data can not be deleted on the device - this is necessary to remove the battery from the device and perform a hard reset. Oh yes: If the program downloads the data from the logger, it does nothing else: During this time, about to send settings to the logger, is not possible.
The loaded on the PC data can be exported: if you have chosen the chart view as a bitmap in BMP format (I say yes, Windows 3.1 sends his regards) in the text view as a CSV file. The CSV export results for me but one for Excel 2010 hardly digestible Datenbrei: Although the values for a single measurement point end up in a line of its own, but, unfortunately, in a single column; and unfortunately, the program attaches to each record the date and time of downloading from the device. This is of course the same for thousands of values. What shoud that? With some tinkering in Word 2010, I then hammer out a halfway usable table. This however can not be!
Conclusion: The instrument itself is okay, if you can live with the relatively large measurement uncertainty. It is useful, for example, to reconstruct variations in temperature and humidity in a daily or weekly history. It should even be possible to use it for monitoring in the freezer (I'm curious ...). Ultimately a nice gadget. The manual for the device is pretty neat and useful, even if it omits the important information on the measuring accuracy. However, the software for the device is a disaster: who delivers something as a producer in 2012, should better change the industry. Those who do not bother at the fumbling sometimes necessary, can buy the datalogger. And so he gets from me just two stars. In principle, I can not in good conscience recommend the purchase.
