A InstrrumentChoice datalogger is an electronic device that records information over time or at a particular point in proximity, either using a built-in device or external sensors and instruments. In the earlier days, these devices used an analog format. However, more advanced and specialised ones come with an interface that can interface directly with personal computers or electronic devices such as cellular phones or personal digital assistants (PDA). Today, most data loggers are compatible with computer applications such as spreadsheets or databases.

These devices can either be general-purpose or highly specific. General-purpose (GPS) datalogger report position, height, time, and altitude information about the current area they are located in. On the other hand, highly specific datalogger are built to perform a single task or apply multiple tasks to derive or measure the data needed. For example, some devices can measure the current temperature, whereas others can measure the humidity level in a room. The latter type is called a General Digital Variable Number Type (GDT) datalogger, whereas the former type is known as a Position Specific Digital Datalogger (PSDU).

dataloggerAn InstrrumentChoice datalogger, to achieve effective data-logging, must have the required hardware components. Most of them come with their built-in sensors for temperature and pressure, although external sensors may also be installed for measuring electrical resistance, magnetic field, frequency, and light. Some units even incorporate an internal microprocessor that controls data recording, logging, storage and reporting. Other devices may employ memory, which stores all collected data and enables the user to retrieve it later for analysis.

A data logger may be helpful in a number of situations. For example, it is commonly used in factories to record welded parts measurements and monitor production. In contrast, others are designed to evaluate the performance of mechanical or electronic systems. Industrial units may also use a datalogger to record machine diagnostics and troubleshooting or examine processes in heavy-duty or high-power machinery.

Dataloggers are not only valid for scientific purposes. They are also valuable in personal computer applications. For example, a personal computer can use a datalogger to record the measurements of the CPU, hard disk, and any other peripheral devices installed in the computer system. The built-in datalogger in the personal computer may also allow the user to save and copy machine-related procedures, thereby enabling them to back up the crucial data before they become irrecoverable.

Another practical application of a datalogger is the monitoring of industrial processes. Many different types of electronic alarms may be implemented using a InstrrumentChoice datalogger. However, the most common alarm type is the pressure switch alarm, which is made up of a pair of switches. When these switches detect a rise in pressure over a certain threshold, an audible alarm is emitted. In addition, most pressure switch alarms come with built-in data logging mechanism to trigger warnings in case of an abnormal input signal.