Measurement and Control Products for WEATHER Measurement and Control Products for WATER Measurement and Control Products for ENERGY Measurement and Control Products for MACHINES Measurement and Control Products for STRUCTURES Measurement and Control Products for EARTH
 Retired Products

CR510 Basic Datalogger

The CR510 provided sensor measurement, timekeeping, data reduction, data/program storage and control functions. It stored up to 62,000 data points. Data and programs were stored...

CR510-2M Basic Datalogger w/2M Additional Memory

The CR510-2M provided sensor measurement, timekeeping, data reduction, data/program storage and control functions. It stored up to 1,000,000 data points. Data and programs were stored...

CR10X Datalogger for Measurement & Control

The CR10X provided sensor measurement, timekeeping, data reduction, data/program storage and control functions. The CR10X stored up to 62,000 data points. Data and programs were...

CR10X-2M Measurement & Control Datalogger w/2 M Additional Memory & Wiring Panel

The CR10X-2M stored up to 1,000,000 data points. The CR10X-2M provided sensor measurement, timekeeping, data reduction, data/program storage and control functions. Data and programs were stored...

CR23X Micrologger® for Data Acquistion

The CR23X Micrologger® was a portable, self-contained package that could store over 1,000,000 data points. It consisted of measurement and control electronics, communication ports, keyboard,...

CR23X-4M Micrologger®

The CR23X-4M could store over 2,000,000 data points. The CR23X-4M Micrologger® was a portable, self-contained package. It consisted of measurement and control electronics, communication ports, keyboard,...

CR9000 Measurement & Control System

The CR9000 was a modular, multiprocessor system that provided precision measurement capabilities in a rugged battery-operated package. Its Base System included a CR9031 CPU module,...

CR9000C Measurement & Control System

The CR9000C was our "compact" version of the CR9000. The CR9000C was a modular, multiprocessor system that provided precision measurement capabilities in a rugged battery-operated...

CR500 Basic Datalogger

The CR500 provided four single-ended (two differential) analog inputs, two pulse counters, two switched excitation channels, and one control port. It used the CR10KD for...

CR10 Measurement and Control System

The CR10 was a predecessor of the CR10X. The CR10X was eventually replaced with the CR1000.  The CR10 consisted of a CR10M Measurement and Control...

21X Micrologger®

The 21X Micrologger featured a self-contained package that had an integrated power supply, keyboard, and display. Its on-board power supply contained alkaline batteries.

21XL Micrologger® with Rechargeable Battery Base

The 21XL Micrologger featured a self-contained package that had an integrated power supply, keyboard, and display. Its on-board power supply contained sealed rechargeable batteries.

BDR301 Basic Data Recorder

The BDR301 featured an SDI-12 intelligent sensor interface, four single-ended (two differential) analog input channels, one switched excitation, one digital output, and two pulse counting...

BDR320 Basic Data Recorder

The BDR320 had an SDI-12 interface, 2 differential (4 single-ended) analog input channels, 1 switched excitation output, 4 digital control outputs (one continuous), and 2...

CR21 Micrologger®

The CR21 and CR21L were initially replaced with the 21X and 21XL. Although these loggers have been retired for many years, replacement parts remain available...

CR5 Measurement & Control System

Completed in 1975, the CR5 was our first data acquisition system. It was also our first modular datalogger; modules needed for the application could be...

Resources and Links

About Dataloggers & Data Acquisition Systems

Campbell Scientific dataloggers are at the center of our rugged, reliable data acquisition systems. Our dataloggers share similar measurement and programming capabilities; selection of the appropriate datalogger depends mainly on the type, number, precision, and speed of measurements required.

Multiplexers and/or SDM devices may be added to augment measurement and control capabilities that include:

  • measuring most sensors
  • providing non-volatile data storage and on-board battery-backed clock (excludes CR7)
  • on-board data processing
  • initiating measurement and control functions based on time or event
  • controlling external devices such as pumps, motors, alarms, freezers, valves, etc.
  • using our PC support software or keyboard/display to program
  • operating independently of ac power, computers, and human interaction
  • consuming minimal power from a 12 Vdc source
  • interfacing with on-site and telecommunication devices such as telephone modems (including cellular and voice-synthesized), short haul modems, radio transceivers, satellite transmitters, and ethernet interfaces
  • operating temperature range of -25° to 50ºC; optional extended ranges are available

FAQs for

What are dataloggers?
Dataloggers, which may also be referred to as Measurement and Control Units (Systems) or Microloggers, are the heart of a data acquisition system. They measure sensors at a specific scan rate, process data, store the data, and initiate telecommunications. Our dataloggers also have control capabilities allowing them to respond to specific site conditions by opening flood gates, turning fans off/on, etc.
How many sensors can a datalogger measure?

The number of sensors that can be measured is determined by the sensor(s) and the datalogger(s). See the sensor's operator's manual to determine the channels each sensor uses. Review the small datalogger comparison chart and the large datalogger comparison chart for the number of analog channels, pulse counting channels, switched excitation channels, digital ports, and continuous analog ports provided by each datalogger.

What is SDI-12?

The official definition of SDI-12 is Serial Data Interface at 1200 baud. Having stated that, SDI-12 is a protocol that was developed within the water resources field to make it easier to determine if a sensor and a datalogger were compatible. Instead of having to work through the specifications of the datalogger and the sensor for output, input, excitation, wiring, power, programming, etc., all SDI-12 sensors would have just three wires—a serial data line, a ground line, and a 12 V power line.

Are Campbell Scientific dataloggers Modbus compatible?

The CR510, CR500, CR10X, CR23X, CR800, CR850, CR3000, and CR1000 can be used for Modbus applications.

The CR510, CR500, and CR10X require a special operating system. Purchase an operating system with the Modbus protocol, and download it to the datalogger using CSOS downloading software or the DevConfig Utility.

Modbus protocol is standard in the CR23X, CR800, CR850, CR3000, and CR1000.

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