A Quick Comparison of the CR1000X, CR1000, and CR6 Dataloggers

by Timothy Jeppsen | Updated: 03/19/2020 | Comments: 4

Search the Blog

Subscribe to the Blog

Get an email when a new article is posted. Choose the topics that interest you most.

Area / Application

Product Category


Corporate / News

Enter your email address:

Suggest an Article

Is there a topic you would like to learn more about? Let us know.

Leave this field empty

CR1000X logo

We recently released the CR1000X Measurement and Control Datalogger, and you may be wondering how it compares with our widely used CR1000 datalogger and our innovative CR6 datalogger. If you’re in the market for a new data logger, how do you know which one is best suited to your application? In this blog article, we’ll look at some differentiators that may help you with your purchasing decision.

How will you use your data logger?

One method to decide among the three data loggers is to consider your basic measurement and control needs and how you will use your data logger. Although these three data loggers share common functionality traits so that they can all be used in most applications, perhaps one of the scenarios described below matches with your situation.


There is no reason to continue to purchase the CR1000. The CR1000 has been an excellent choice in data loggers; however, the CR1000X can do everything the CR1000 can—only better! The CR1000X will even fit seamlessly into an existing network of CR1000s.


If your application requires between four and 10 sensors (typical of full meteorological, agricultural, and hydrological/water quality monitoring systems), the CR1000X will be your ideal choice. The CR1000X includes dedicated analog and digital ports—an excellent combination when your application requires a varied selection of sensors to be measured and/or devices to be controlled. These features are also beneficial when your application will remain unchanged for long periods—years or decades measuring the same parameters. The CR1000X also introduces the highest level of accuracy in analog measurements of any of our data loggers.

The CR1000X may be your best solution in any of these scenarios:

  • You have a traditional monitoring station intended for long-term, continuous operation.
  • High accuracy is critical for your analog sensors.
  • You are currently using CR1000 dataloggers.


CR6 datalogger

Although many of the communication functions and specifications of the CR6 are the same as the CR1000X, the unique universal terminals of the CR6 can be configured to operate as digital, analog, or vibrating wire inputs. These universal terminals make the CR6 an ideal data logger for repurposing to meet the changing needs of your multiple applications, such as for research projects that change frequently. Also, because of the universal terminals, up to six low-level ac ports can be configured. This makes an ideal configuration when you are measuring multiple sensors that generate low-level ac (that is, wind speed sensors, water flow sensors, etc.). If your application requires a data logger with integrated radio communications, the CR6 may provide the solution you’re looking for. Unlike the CR1000X, the CR6 provides options with Wi-Fi or spread-spectrum radios built into the data logger, eliminating the need for an external radio. The CR6 is also an ideal data logger when you are using up to six vibrating wire sensors, which are used extensively in structural monitoring.

The CR6 may be your best solution in any of these scenarios:

  • Your system is used with vibrating wire sensors.
  • You frequently change the sensor types you use in your system.
  • You require an integrated radio system. 

Tip: You can expand the functionality of all three data loggers using input/output expansion modules, communication peripherals, and memory expansion devices.  

Which specifications are most important to you?

Another method to make your selection is to review the specifications of the three data loggers to determine which one most closely meets your application’s requirements. The chart below highlights some of the specifications for the three data loggers:

CR1000 CR1000X CR6
Processor 7 MHz,
10 ms execution
100 MHz,
1 ms execution
100 MHz,
1 ms execution
Power 9.6 to 16 Vdc

< 1 mA @12 Vdc

1 Hz sample:
1 mA @ 12 Vdc

1 Hz sample + RS-232:
16 mA @ 12 Vdc
10 to 18 Vdc

< 1 mA @ 12 Vdc

1 Hz sample:
1 mA @ 12 Vdc

1 Hz sample + RS-232:
28 mA @ 12 Vdc
10 to 16 Vdc

< 1 mA @ 12 Vdc

1 Hz sample:
3 mA @ 12 Vdc

1 Hz sample + RS-232:
28 mA @ 12 Vdc
Memory 4 MB SRAM

512 KB CPU

Up to 4 MB of internal data storage


Up to 72 MB of internal data storage


Up to 72 MB of internal data storage
Analog 13-bit resolution

16 single-ended
(8 differential) analog channels
24-bit ADC

16 single-ended
(8 differential) analog channels
24-bit ADC

Up to 12 single-ended
(6 differential) analog channels
Vibrating Wire No No Yes
0 to 20 mA No RG1, RG2 RG1 (only available for CR6 models with double blue strips next to "CR6" on the label)
Pulse P1 and P2, C1 to C8 P1 and P2, C1 to C8

C1 to C8 configurable in pairs, pull-up or pull-down resistor
C1 to C4, U1 to U12

Configurable in pairs, pull-up or pull-down resistor
Vx Vx1 to Vx3

Switched power
Vx1 to Vx4

Switched or continuous power at 3.3 V / 5 V (regulated)
C1 to C4, U1 to U12

Switched or continuous power at 3.3 V / 5 V
5 V Dedicated 1 1 0
12 V 2 1 1
SW12V 1 2 2
C Ports 8 8 4
RS-232 1 (RS-232) 3 (C5, C7, RS-232/CPI) 3 (C1, C3, RS-232/CPI)
RS-485 No 2 (C5, C7) 2 (C1, C3)
CS I/O Yes Yes Yes
CPI No Yes Yes
Ethernet No Yes Yes
Memory Flash Card  No up to 16 GB (purchased separately) up to 16 GB (purchased separately)
USB No Yes Yes


CR6, CR1000X, and CR1000 dataloggers

Selecting a data logger is an individual decision that is dependent upon the needs of your organization and your application. We hope the information in this article has helped you determine your most suitable data logger—or at least, has gotten you started in the selection process. If you have any questions about how the CR1000X, CR1000, and CR6 compare, please post them below.

Share This Article

About the Author

timothy jeppsen Timothy is the Senior Marketing Manager at Campbell Scientific, Inc. He began his Campbell Scientific career as an Applications Engineer specializing in aquaculture applications and has also held positions as a sales engineer, manager of the Water Resources Group, and Marketing Product Manager for data loggers and communications products. Timothy received his bachelor’s degree in marketing from Utah State University and his master’s degree in quantitative genetics from Auburn University.

View all articles by this author.


XxVashxX | 03/18/2020 at 08:15 PM

This comparative table and explanation was great, maybe must include the CR300 and CR310 in the comparison as are also great dataloggers that fit many aplications ride now, also i believe there is a little mistake in the memory of the CR6, could you take a look on that?


Robin D | 03/19/2020 at 08:37 AM

The spec information regarding the memory of the CR6 has been updated in the article. Thank you.

As the title of the article mentions ("A Quick Comparison of the CR1000X, CR1000, and CR6 Dataloggers"), the article was intended to be a comparison of just those three data loggers, when it was originally published on August 16, 2017. The CR1000 is now retired. Any comparison of the CR1000X, CR6, CR300, and CR310 would require writing a new blog article. This suggestion will be passed along. Thank you.

masdarmech | 03/20/2020 at 06:10 AM

why only C5,C7 and CPI ports mentioned as RS232 for cr1000x. what about C1 and C3? i have successfully communicated with RS232 devices on C1 and C3 ports.

is there a 12V implementation of RS232 in CR1000X similar to PCs with RS232 port?

ZooKeeper | 03/20/2020 at 08:12 AM

Good question. C5, C7, and CPI are true RS232 zero crossing and go to about ±7V. C1 and C3 are only 0 to 5V levels when using RS232 logic like the C terminals of the CR1000. And yes, C1 and C3 should work for most RS232 devices. We didn't want to misrepresent the capabilities of C1 and C3.

Please log in or register to comment.