The CR300 Series data logger

CR300 series data loggers are multi-purpose, compact, measurement and control data loggers. These small, low-cost, high-value data loggers offer fast communications, low power requirements, built-in USB, and excellent analog input accuracy and resolution. They can measure most hydrological, meteorological, environmental, and industrial sensors. They concentrate data, make it available over varied networks, and deliver it using your preferred protocol. They also perform automated on-site or remote decision making for control and M2M communications. CR300 series data loggers are ideal for small applications requiring long-term remote monitoring and control.

CR300 Series product line

The CR300 series product line consists of the CR300 and the CR310. The primary differences between the CR300 and CR310 are that the CR310 offers removable terminals and a 10/100 Ethernet connection.

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The CR300 series can include Wi-Fi, cellular, or the following radio options for different regions:

• RF407: US and Canada
• RF412: Australia and New Zealand
• RF422: Europe
• RF427: Brazil

Overview

The CR300 series data logger is the main part of a data acquisition system (see CR300 series data acquisition system components for more information). It has a central-processing unit (CPU), analog and digital measurement inputs, analog and digital outputs, and memory. An operating system (firmware) coordinates the functions of these parts in conjunction with the onboard clock and the CRBasic Campbell Scientific's BASIC-like programming language that supports analog and digital measurements, data processing and analysis routines, hardware control, and many communications protocols. application program.

The CR300 series can simultaneously provide measurement and communications functions. Low power consumption allows the data logger to operate for extended time on a battery recharged with a solar panel, eliminating the need for ac power. The CR300 series temporarily suspends operations when primary power drops below 9.6 V, reducing the possibility of inaccurate measurements.

Operations

The CR300 series measures almost any sensor with an electrical response, drives direct communications and telecommunications, reduces data to statistical values, performs calculations, and controls external devices. After measurements are made, data is stored in onboard, nonvolatile memory. Because most applications do not require that every measurement be recorded, the program usually combines several measurements into computational or statistical summaries, such as averages and standard deviations.

Programs

A program directs the data logger on how and when sensors are measured, calculations are made, data is stored, and devices are controlled. The application program for the CR300 series is written in CRBasic Campbell Scientific's BASIC-like programming language that supports analog and digital measurements, data processing and analysis routines, hardware control, and many communications protocols., a programming language that includes measurement, data processing, and analysis routines, as well as the standard BASIC instruction set. For simple applications, Short Cut A CRBasic programming wizard suitable for many data logger applications. Knowledge of CRBasic is not required to use Short Cut., a user-friendly program generator, can be used to generate the program. See also:

• Creating a Short Cut data logger program
• https://www.campbellsci.com/videos/datalogger-programming 

For more demanding programs, use the full-featured CRBasic Editor The CRBasic programming editor; stand-alone software and also included with LoggerNet, PC400, and RTDAQ software.. The CRBasic Editor help contains program structure details, instruction information and program examples: https://help.campbellsci.com/crbasic/cr300/ .