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Data Loggers

Published on Nov 23, 2015


A data logger (also data logger or data recorder) is an electronic device that records data over time or in relation to location either with a built in instruments or sensors or via external instruments and sensors. Increasingly, but not entirely, they are based on a digital processor (or computer). They generally are small, battery powered, portable, and equipped with a microprocessor, internal memory for data storage, and sensors.

Some data loggers interface with a personal computer and utilize software to activate the data logger and view and analyze the collected data, while others have a local interface device (keypad, LCD) and can be used as a stand-alone device. Data loggers vary between general purpose types for a range of measurement applications to very specific devices for measuring in one environment or application type only.

It is common for general purpose types to be programmable; however, many remain as static machines with only a limited number or no changeable parameters. Electronic data loggers have replaced chart recorders in many applications. One of the primary benefits of using data loggers is the ability to automatically collect data on a 24-hour basis. Upon activation, data loggers are typically deployed and left unattended to measure and record information for the duration of the monitoring period. This allows for a comprehensive, accurate picture of the environmental conditions being monitored, such as air temperature and relative humidity.

Data Loggers

Cold Chain Distribution Imini Plus Pdf - DataLogger

The NEW I Mini Plus PDF data logger from Escort will generate a comprehensive PDF report without the need for proprietary software or interface on receipt by the Receiver. The I Mini Plus PDF data logger is the ideal instrument for monitoring temperature sensitive shipments to distant destinations where proprietary software and interfaces are unavailable. Every data logger is supplied with a simple USB to USB cable for PC connection and travels with the logger in the consignment. Report generation includes a summary of transport condition, time spent out of specification and trip statistics.

In addition the report provides date, time and temperature of all readings plus a graph of the temperature of the trip. The PDF report can be validated by Console software by emailing the PDF report and binary files to the Supplier thus meeting the requirements for 21 CFR Part11. For complete solutions for complex real-time processing and control applications, contact CAS DataLogger’s Solution Analysts for application specific designs. Pricing based on individual application needs and required results.

Block Diagram of Data Logger

Data Loggers Diagram


Sensors are used to take readings or measurements at regular intervals of their environment.

• The sensors could be collecting data on a wide range of things such as temperature, humidity, pressure, wind speed, water currents, electrical voltage, pH readings etc.

• The sensors may be either analogue or digital. If they take analogue readings, an Analogue to Digital Converter (ADC) will be needed to convert the signal into digital data which the computer can understand.

• As the sensor takes a reading, the data is sent though a cable or wireless link to the data logger.

• The data logger usually stores the data for a period of time before sending it in a large batch to a computer which will process and analyse it.

• A data logger is often a hand-held battery-operated device which has a large amount of memory.

Using the data logger software, download the data to the pc. Most data logger software packages allow the user to view data in a number of different formats. The most common formats are graphical and tabular. The graphical format, as shown in Figure 3, allows the data to be viewed pictorially asa graph. This format provides the user with a quick means for getting a feel for what is happening and observing trends. The tabular format, shown in Figure 4, provides the user with the raw data.

Data in this format can be exported to a spread sheet application such as Microsoft Excel, for further manipulation. Once the data is in the pc, it can be saved as a file on the computer or floppy disk for recall at a later date or printed. Madge Tech data loggers are small, battery powered ,intelligent electronic devices that record measurements of physical parameters in the world for later retrieval by a computer. As the technology improves, significant achievements in performance can be made.

Madge Tech has defined its mission as in corporating the latest technology into its data loggers as soon as it becomes available. At Madge Tech, we are taking the lead in the industry when it comes to price/performance as we have an unrelenting commitment to pursue performance improvements in our existing data loggers as well as designing and developing new data loggers.


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