Replacing Your CR1000 Datalogger with a CR1000X: What You Should Know

by Timothy Jeppsen | Updated: 10/11/2017 | Comments: 0

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CR1000X logo

As soon as people learned that we were replacing the CR1000 datalogger with the CR1000X datalogger, they asked us these questions: “Can I load a program I wrote for my CR1000 into a CR1000X?” and “Will the CR1000X fit in the same space as my CR1000?”

Easy answer—yes, mostly. Let me explain. The upgrade improvements in the CR1000X are not simply cosmetic. The CR1000X is a completely new product from the ground up. However, because the programming and functions are very similar between the CR1000X and CR1000, the replacement is fairly straightforward.

In the following sections, I’ll highlight the similarities and differences of the two dataloggers that you should know about.

Size

Physically, replacing a CR1000 with a CR1000X is simple. The size of the CR1000X is the same as the CR1000.

CR1000 and CR1000X dimensions

Wiring Panel

Here is where things get different. Removable terminal strips on the CR1000X wiring panel provide a quick and effective way to quickly swap dataloggers without removing sensor wires or the entire wiring panel. The complete wiring panel and datalogger are still separate components. Like the CR1000, the CR1000X is in a sealed, protective enclosure, shielded from direct electrical damage through the terminal and port connectors. The wiring panel becomes the first line of protection for the datalogger. This increases the probability that the data is saved if catastrophic damage should occur. And in most cases, the repairs are limited to the wiring panel.

CR1000 wiring panel

CR1000 Wiring Panel



CR1000X wiring panel with terminal strip removed

CR1000X Wiring Panel with Terminal Strip Removed


The CR1000X wiring panel is not generally intended to be interchanged with another CR1000X wiring panel.

Because the CR1000X can measure analog current directly (0 to 20 mA or 4 to 20 mA), the wiring panel is not designed to be interchangeable.

interchangeability of CR1000 wiring panels

If the wiring panel of the CR1000X becomes damaged and a new wiring panel is required, the CR1000X wiring panel must be calibrated with the CR1000X measurement module to maintain current-measurement accuracy.


The CR1000 wiring panel can be interchanged with another CR1000 wiring panel.

For the CR1000, any wiring panel can be used with any CR1000 datalogger.

interchangeability of CR1000X wiring panels


The CR1000X and CR1000 wiring panels cannot be interchanged.

  • The CR1000X wiring panel cannot be used with a CR1000 measurement module.
  • The CR1000X measurement module cannot be used with a CR1000 wiring panel.

interchangeability of CR1000 and CR1000X wiring panels

Programming

Although there are significant additions to the CR1000X program instructions that are not available in the CR1000, in most cases you can load your program written for the CR1000 into a CR1000X with minor instruction changes. The most notable of these changes is in the analog measurement instructions. I will use the Differential Measurement, VoltDiff(), to illustrate. 

Parameter CR1000 CR1000X
VoltDiff(Dest,1,mV5000,1,True ,0,_60,1.0,0) VoltDiff(Dest,1,mV5000,1,True ,0,60,1.0,0)
Dest The Dest parameter is a variable in which to store the results of the measurement. Same as the CR1000.
Reps The Reps parameter is the number of times the measurement should be made. Measurements are made on consecutive channels. If the Reps parameter is greater than 1, the Dest parameter must be a variable array. Same as the CR1000.
Range The Range parameter is the expected voltage range of the input from the sensor. The following range options are available:
Alphanumeric Description
mV5000 ±5000 mV
mV2500 ±2500 mV
mV250 ±250 mV
mV25 ±25 mV
mV7_5 ±7.5 mV
mV2_5 ±2.5 mV
autorange Uses the most suitable range.
mV2500C ±2500 mV; checks for open input.
mV250C ±250 mV; checks for open input.
mV25C ±25 mV; checks for open input.
mV7_5C ±7.5 mV; checks for open input.
mV2_5C ±2.5 mV; checks for open input.
autorangeC Uses the most suitable range; checks for open input.
The Range parameter is the expected voltage range of the input from the sensor. The following range options are available:
Alphanumeric Description
mV5000 ±5000 mV
mV1000 ±1000 mV
mV200 ±200 mV
autorange Uses the most suitable range.
mV5000C ±5000 mV; checks for open input.
mV1000C ±1000 mV; checks for open input.
mV200C ±200 mV; checks for open input.
autorangeC Autorange; checks for open input.
DiffChan The DiffChan parameter is the number of the differential channel on which to make the first measurement. If the Reps parameter is greater than 1, the additional measurements will be made on sequential channels. Same as the CR1000.
RevDiff A constant is entered for the RevDiff parameter to determine whether the inputs are reversed and a second measurement made. This function removes any voltage offset errors due to the datalogger measurement circuitry, including operational input voltage errors.
  • False (or 0) = Do not make a second measurement.
  • True (or 1) = Reverse inputs and make a second measurement.
Same as the CR1000.
SettlingTime The SettlingTime parameter is the amount of time to delay after setting up a measurement and before making the measurement. Same as the CR1000.
Integ
(for CR1000)

fN1
(for CR1000X)
The Integ parameter is the amount of time, in microseconds, to integrate a signal for the channel being measured. Three options are available:
Option Description
250

Performs a 250 μs integration.

_60Hz

Performs a 16.667 ms integration; filters 60 Hz noise.

_50Hz Performs a 20 ms integration; filters 50 Hz noise.
The fN1 (first notch frequency) parameter determines the lowest frequency that will be eliminated or notched out by the sinc filter. Any value between 5 Hz and 93.75 kHz can be entered, but common options for filtering noise are the following:
Option Description
15000

Performs a 0.0667 ms integration.

_60Hz (or 60)

Performs a 16.667 ms integration; filters 60 Hz noise.

_50Hz (or 50) Performs a 20 ms integration; filters 50 Hz noise.
Mult, Offset Both the Mult and Offset parameters are a constant, variable, array, or expression by which to scale the results of the measurement. With a multiplier (mult) of 1 and an offset of 0, the output is in millivolts. Same as the CR1000.

  

Recommended for You: For programming assistance, watch the "CRBasic | Help System" video.

Converting a CR1000 Program to a CR1000X Program

There are two quick ways I use to convert a CR1000 program to a CR1000X program.

Option A

  1. Rename the CR1000 program file name extension to .CR1X. For example, if your CR1000 program file is Temp.CR1, rename it to Temp.CR1X.
  2. After this file is renamed, open it with the CRBasic Editor.
  3. Change the comment line at the beginning of the program instruction from 'CR1000 Series Datalogger to 'CR1000X Series Datalogger, and then compile the program. (This is not necessary for the program, but it is good practice to have correct comments in your programs.)
  4. When you compile this program, the errors will be indicated. Edit these errors, and the program will compile correctly. (For help, watch the error-checking segment [5:55] of the "CRBasic | Common Errors" video.) 

Option B

  1. Open the CR1000 program file in the CRBasic Editor, and copy all the instructions in the program.
  2. Create a new program for the CR1000X in the CRBasic Editor.
  3. Delete all the lines of instruction in the program, and copy all the lines of instruction from the CR1000 program.
  4. Change the comment line at the beginning of the program instruction from 'CR1000 Series Datalogger to 'CR1000X Series Datalogger, and then compile the program. (This is not necessary for the program, but it is good practice to have correct comments in your programs.)
  5. When you compile this program, the errors will be indicated. Edit these errors, and the program will compile correctly. (For help, watch the error-checking segment [5:55] of the "CRBasic | Common Errors" video.)

Conclusion

Replacing your current CR1000 dataloggers with our new CR1000X dataloggers should be a fairly straightforward process, and I hope the information in this article is helpful to you. If you have any questions I didn’t address, please post them below.


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About the Author

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

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