12/30/2023 0 Comments Sum of dependent data data logger proThe data logger’s acquired data and calculated values will need to be transferred to a PC or other device for increased access, sharing, analysis, and reporting. A sophisticated data logger can receive the electrical signals from the sensors, perform any programmed calculations, convert the data as necessary to other units of measurement, and store the resultant data in the data logger’s memory. The data logger can be programmed to scan the sensors of the data acquisition system repeatedly after a specified interval has passed (the scan rate), under specified conditions, or after the occurrence of a particular event type (such as rainfall). Communications (data storage and retrieval)Ī facility may individually select each of their data acquisition system’s components, thereby creating a customized solution that will meet their specific needs.These components may include the following: The general-purpose data logger is often considered the brain of a data acquisition system, but it is only one of the interfaced components used in the process of acquiring, recording, transmitting, and analyzing measurements. What is the role of a data logger in a data acquisition system?Ī data acquisition system consists of multiple electronic devices that act together to serve the primary purpose of collecting measured data. The following illustration depicts the most common parts of a general-purpose data logger: What are the different parts of a data logger? For example, a data logger may be programmed to respond to a measured rise in water level by closing a floodgate and sending a notification to personnel. In addition to their measurement and monitoring functions, some data loggers can trigger an alarm or notification, as well as control an external device, in response to any of the following: a specific, measured site condition time of day or event. Transmit measurement data and calculated values.Initiate a variety of telecommunications.Process statistical and mathematical data.Provide measurements at specific time intervals.Most modern, general-purpose data loggers are microprocessor-controlled electronic devices that can interface directly with a variety of sensors to do the following: For the purpose of this discussion, our focus will be on general-purpose data loggers. Another data logger may be a general-purpose device that is used in many different applications to log data from multiple sensors of varying types. For example, one data logger may be packaged together with a sensor for a single application-specific purpose, such as measuring temperature. Today, a wide range of devices are referred to as "data loggers," and they can vary greatly in their functionality. Which term is used often varies by industry or discipline. Note: Similar terms for "data logger" include "datalogger," "logger," "data recorder," "data acquisition system," and "RTU" (remote terminal unit). Today, data is typically stored on modern flash memory and often transmitted via a variety of telemetry methods. Over time, data loggers evolved to store data digitally on various types of media. Early data loggers were strip chart recorders that recorded measurement data onto paper. In cases where a smart sensor provides digital output, the data logger simply records the data. In some cases, the data logger interprets the electrical signal from the sensor and converts it to units. PakBus, PakBus Encryption, Modbus RTU/ASCII/TCP, DNP3, SDI-12, and othersĪ data logger is a device used to record and store the output of one or more sensors. PakBus, Modbus, DNP3, SDI-12, TCP, UDP, and othersĤ single-ended or 2 differential (individually configured) The number of analog inputs, switched excitations, and digital ports assume all the ports are configured the same.)Ħ single-ended or 3 differential (individually configured) Up to 12 single-ended or 6 differential (The CR6 has 12 universal and 4 control terminals that can be programmed for a variety of functions. Four analog inputs can provide pulse/digital I/O functions.ĬPI, PakBus, SDM, SDI-12, Modbus, TCP, DNP3, UDP, NTCIP, NMEA 0183, I2C, SPI, and others Two analog inputs can measure 4 to 20 mA or 0 to 20 mA natively. CR1000X Measurement and Control Dataloggerġ6 single-ended or 8 differential (individually configured).
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