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Data loggers have the ability to track an extensive range of energy and environmental measurements including temperature, relative humidity, AC/DC current and voltage, differential pressure, time-of-use (lights and motors), light intensity, water level, soil moisture, rainfall, wind speed and direction, pulse signals, and more. In simple words, Data logging is the measuring, recording and analyzing of physical or electrical parameters over a period of time. Data loggers are used in a broad range of applications that may include in-vehicle data logging, environmental monitoring, structural health monitoring, and machine condition monitoring. Commonly used and needed measurements counts temperature, strain, voltage, current, pressure, force, and as well as acceleration. On average data loggers are compact, battery-powered devices equipped with an internal micro processor, data storage, and one or more sensors. First, the data logger is attached to a personal computers or MAC computer by the means of a Universal serial bus interface. Accompanying data logger software is used to select logging parameters (sampling intervals, start time, etc.) and stimulate the logger. The logger is then detached and installed in the preferred place where it tracks every measurement and stores it in memory along with the time and date. Once the desired monitoring period is ended, the data logger is then reconnected to the computer and the software is used again to read out the data and exhibit the measurements in graphs that show profiles over time. Tabular data can be vision as well, or sell abroad to a spreadsheet for additional management. In the case of web based data logging systems, data are pressed to the Internet for right to use and with wireless data nodes, data are transformed to a fundamental earpiece Rs232 loggers are easy to attach as; the recording period is reliant on the memory capability of the data logger and the preferred trial rate. To verify the duration split the memory capacity (number of samples the device can record) as a result of the trial rate. At the same time as an example assume that a given data logger can store 10,000 samples. If it is preferred to track 2 samples each minute, the data logger can run for 10,000/2 or 5,000 minutes (about 3.5 days). If the sample rate was cut in half (1 sample per minute), the tracking era would twice to 7 days. Rs232 contains the following features: • Logs asynchronous serial communication (RS-232 compatible) • Baud rates up to 115200 bps • Logs 2 streams simultaneously (RX and TX) • 2 Gigabytes internal memory • Powered from a USB port, or external power supply • No software or drivers required, Windows, Linux, and Mac compatible • USB Flash Drive mode • Time and date stamping (Time Keeper and Wi-Fi version) • Built-in battery (Time Keeper and Wi-Fi version) • Background connection to the Internet over a local Access Point (Wi-Fi version) • Automatic E-mail reports with recorded data (Wi-Fi version) • On-demand access at any time through TCP/IP (Wi-Fi version) • Support for WEP, WPA, and WPA-2 encryption (Wi-Fi version) For more information: http://www.keydemon.com/rs232_logger/
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