The Many Uses For A Data Logger
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Electronic data that is collected over a certain period of time or from a specified location is usually stored on a Data Logger that uses instruments and sensors which may be built into the device or attached to it externally to do the recording. Electronic signals are generally provided through the use of a processing chip. Most of the devices are battery powered, portable, small and microprocessor controlled. Data from the sensors is stored in memory chips.
A personal computer running custom software is often used to retrieve the data and to view then analyze it. Some of the devices have the facility to attach a keyboard and an LCD screen to them, enabling the operator to view the data without removing the device from the site.
There are many different types of data logging equipment, ranging from very simple counters in one environment to collecting a large range of measurements for specialized applications in a constantly changing environment. Many of the devices are programmable while others take static measurements and have limited or non changeable parameters. In many applications, these devices have replaced chart recorders.
A major benefit of using the logger is that it can be left unattended for 24 hours or more. The collection cycle may be started, then they can be left on their own to store and measure various types of data over long periods. An accurate picture of the local environment may be built up with data such as air temperature and relative humidity over the monitoring period. A humidity sensor will measure moisture content and air temperature. A relative humidity percentage is a ratio of the moisture in the air that will be supported by air at a specific temperature.
Anyone who uses a measuring instrument should be confident that the results obtained from the instrument are accurate and adhere to specifications. There are many laboratories throughout the world that specialize in the calibration and certification of measuring sensors. Calibration is necessary to ensure that the quality of the entity being measured conforms to internationally accepted standards.
The pressure sensor used to record the pressure of liquids or gases generates an electrical signal in the transducer. A transducer is a device that converts energy from one form into another. For example the pressure on the transducer is converted to an electrical signal that can be measured. There are various methods for generating the energy forms such as diaphragms, pistons, Bourdon tubes or bellows which are activated by the application of force or pressure over an area. The conversions are performed using a variety of sensing technologies such as capacitive, electromagnetic, piezoelectric, potentiometric and optical.
There are a great number of applications that make use of data logging devices. These include weather stations, the recording of soil moisture, road traffic counting, vibration and shock monitoring, vehicle testing, scientific measurements and hundreds more. The modern data logging device can now be combined with wireless technology for transmitting the data to central collection points.
Sophisticated versions of early data logging devices are now to be found in automobile fault diagnostics, aircraft data recorders, automobile crash data before and after, event recording and hundreds more. A humidity sensor is now very widespread in industry.
Article Source: Articlelogy.com
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