RETIRED ›
This product is no longer available and has been replaced by: CR300,CR310. Some accessories, replacement parts, or services may still be available.
CR211X Datalogger with 922 MHz Spread-Spectrum Radio
Services Available
Repair Yes
Calibration No
Free Support Yes

Overview

The CR211X is a small, low-cost datalogger that includes an internal 922 MHz spread-spectrum radio for transmitting data to another CR211(X), an RF411 radio, or an RF431 radio. The 922 MHz frequency is used in Australia and Israel.

The CR211X provides stand-alone operation in harsh, remote environments. It reads input from one or two sensors, then transmits its data wirelessly via its internal radio. Multiple CR211Xs can be configured as a network, or units can be deployed individually.

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Benefits and Features

  • Small, low-cost data logger with internal spread spectrum radio for wireless communications
  • Integrated radio lets this data logger function like a wireless sensor in a network, transmitting to a master data logger
  • Ideal applications include wind energy, rural water, water level/flow, aquaculture, water quality
  • Gas Discharge Tube (GDT) protected inputs
  • Optimal for measuring one or two simple sensors
  • Makes SDI-12, single-ended analog, pulse, switch closure, and bridge measurements
  • Battery-backed clock that ensures accurate time is maintained while data logger is disconnected from battery power

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Detailed Description

The CR211X can be used in a wireless sensor network. Wireless sensor networks are appealing because they are often more economical than trenching, laying conduit, and pulling wire. When used as a wireless sensor, the CR211X measures the sensors attached to it, then transmits its data wirelessly via its spread-spectrum radio to a master datalogger. The master datalogger must support the PakBus communication protocol (e.g., CR800, CR850, CR1000, CR3000). For more information on how to configure a PakBus system, please read our PakBus Networking Guide.

The CR211X has several input channels for measuring a variety of sensors. Gas discharge tubes provide rugged electrostatic discharge protection for the inputs.

The CR211X does not make differential measurements and is not compatible with SDM devices, multiplexers, or thermocouples. (Refer to the Compatibility section on the web page for compatible sensors, peripherals, and software.) Recalibration services are not offered for the CR211X datalogger.

Specifications

-NOTE- Note: Additional specifications are listed in the CR200X-Series Specifications Sheet.
Internal Spread-Spectrum Radio Operating Frequency Range 920 to 928 MHz
Radio Power 250 mW
Older CR211X dataloggers (serial # < 19143) have 100 mW radios.
Transmitter Power Output 100 mW
Maximum Scan Rate 1 Hz
Analog Channels
  • The single-ended analog inputs can also be used as control ports.
  • 5 single-ended (no differential) individually configured
Pulse Count Channels 2
Switched Excitation Channels 2 voltage
Digital Ports
  • Certain digital ports can be used to count switch closures.
  • 2 I/O
Communication Ports 1 RS-232
Switched Battery Port 1
Input Voltage Range 0 to 2500 mV
Analog Voltage Accuracy ±(0.25% of reading + (1.2 mV)x(offset)) at -40° to +50°C
Analog Voltage Resolution 0.6 mV
A/D Bits 12
Operating Temperature -40° to +50°C
Power Requirements 7 to 16 Vdc
Typical Current Drain
  • ~0.2 mA (quiescent)
  • ~3 mA (active, no radio)
  • ~20 mA (active, radio receive)
  • ~75 mA (active, radio transmit)
Protocols Supported PakBus (leaf node only), SDI-12 (@ -40° to +50°C)
Warranty 3 years
Dimensions 14.0 x 7.6 x 4.8 cm (5.5 x 3.0 x 1.9 in.)
Weight 271 g (9.5 oz)

Memory

Final Storage 512 kB of flash memory for approximately 125,000 data points
Operating System 106 kB of flash memory
Intermediate Storage 8 kB of SRAM for communication buffers, calculations, variables, etc.

Compatibility

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Sensors

Product Compatible Note
014A-L
03002-L
03101-L
034B-L
05103-45-L (retired)
05103-L
05106-L (retired)
05305-L
083E-L (retired)
092-L (retired)
107
108
109
109SS-L
110PV-L (retired)
237-L (retired)
255-100
27106T-L
43347-L
52202-L
A100LK-L
CMP11-L (retired)
CMP21-L
CMP6-L (retired)
CS100
CS106
CS215-L (retired)
CS300-L (retired)
CS410-L (retired)
CS451
CS456
CS460-L (retired)
CS470 (retired)
CS471 (retired)
CS475-L (retired)
CS511-L
CS526-L (retired)
CS547A-L
CS616
CS625 (retired)
CS650
CS655
CS700-L
CSAT3 (retired)
CSIM11-L
CSIM11-ORP-L
ENVIROSCAN (retired)
HC2S3-L (retired)
HMP155A-L
HMP60-L
LI190SB-L (retired)
LI200X-L (retired)
LWS-L
OBS-3+ (retired)
OBS300 (retired)
OBS500 (retired)
P2546A-L
SEN12512 (retired)
SR50A-L (retired)
TB4-L
TB4MM-L
TE525-L
TE525MM-L
TE525WS-L
WINDSONIC1-L
WINDSONIC4-L
WXT520 (retired)

Software

Product Compatible Note
LoggerNet Version 2.1 or higher
PC200W (retired)
PC400 Version 1.0 or higher
PCONNECT (retired) Version 3.0 or higher
PCONNECTCE (retired) Version 2.0 or higher
Short Cut
VISUALWEATHER

Additional Compatibility Information

Communications

The CR211X can communicate with a PC via direct connect, NL201 Network Link Interface, NL240 Wi-Fi Network Link, MD485 multidrop modem, and digital cellular modems. Data can be viewed on an iOS device, an Android device, CD295 DataView II Display, or a user-supplied PDA. To use an iOS or Android device, go to the Apple Store or Google Play and download our LoggerLink Mobile Apps free of charge. User-supplied PDAs require either PConnect or PConnectCE software.

The CR211X's internal spread spectrum radio can transmit data to other CR211(X) loggers, RF411 radios, or RF431 radios. Certain CR211X settings must match the radio's settings for communications between the data logger and radio to be successful. The factory default settings of these devices might not match; therefore, they may need to be reconfigured before communications can take place.

If the CR211X is in the transparent mode, it can communicate with the retired CR210 loggers or RF410 radios.

Measurement & Control Peripherals

Campbell Scientific’s SDM devices and multiplexers are not supported.

Sensors

The CR211X can measure a variety of sensors including SDI-12 sensors and 4 to 20 mA sensors. It cannot make differential measurements and is not compatible with the freezing-rain/ice, fuel moisture/temperature, geographic position, present weather, soil heat flux, soil matric water potential, and strain sensors listed on our price lists.

Enclosures

Applications with minimal power requirements can use the ENC200 enclosure to house the data logger and the #16869 sealed rechargeable battery. The ENC200 cannot house a barometer or a battery that is larger than the #16869. However, an ENC10/12 or ENC12/14 enclosure is adequate for most CR211X-based systems.

Power Supplies

The CR211X uses an external power supply and has a built-in regulator. When connected to the on-board charging circuit, the sealed rechargeable battery should be 7 A h or smaller. Using larger batteries with the data logger's built-in charger may result in excessive PC board heating. This is especially a concern when the battery is deeply discharged or failing with a shorted cell. Campbell Scientific also recommends that solar panels be 10 W or less and wall chargers be 1 A or smaller.

Operating System Considerations

Newer data loggers with 250 mW radios must use OS 3 or higher for their data logger operating system.

Downloads

CR200X Series OS v.04 (1.29 MB) 22-09-2015

Execution of this download installs the Operating System and Compiler on your computer for the following dataloggers:CR200X, CR206X, CR211X, CR216X and CR295X.  It also updates the support files for the CRBasic Editor.  

Note: Newer CR206X dataloggers (serial # ≥ 19122) and newer CR211X dataloggers (serial # ≥ 19143) have 250 mW radios that must use OS 3 or higher for their datalogger operating system.

View Update History

Frequently Asked Questions

Number of FAQs related to CR211X: 1

  1. The CR200X-series and the retired CR200-series dataloggers are NOT compatible with SDMs or multiplexers. If more channels are needed or may be needed in the future, consider purchasing a CR800, CR850, or CR1000 instead.