CR205

Name: CR205
Brand: Campbell Scientific
SKU: CR205
Availability: Discontinued

Datalogger with 915-MHz Spread-Spectrum Radio

CR205

End of life

Datalogger with 915-MHz Spread-Spectrum Radio

No longer available to order

This product is retained for service, documentation, and compatibility information.

Replaced by

CR300
Measurement and Control Datalogger
CR310
Measurement and Control Datalogger

Model:: CR205
Item Number:: CR205

Overview

In September 2005, the CR205 Datalogger was replaced by the CR206 Datalogger. The CR206 has improved communication capability. The CR205 can be used within a CR206(X) network, but the CR206(X) needs to be in the transparent mode. Contact one of our application engineers for details.

Benefits

Ideal where only a few sensors will be measured
On-board 12 Vdc lead acid battery charger
Stores 32,000 data points (nonvolatile)
Data format is table-based

Specifications

A/D Converter: 12 bit
Scan Rate: Once per second
(maximum)
Single-Ended Analog Channels: 5
(individually configured)
Analog Voltage Range: 0 to +2500 mV
Measurement Resolution: 0.6 mV
Excitation Channels: 2
(programmable for either +2.5 or +5 volts)
Switched Battery Port: 1
Pulse Count Channels: 2
Control Ports: 2
Battery Voltage Range: 7 to 16 Vdc
Communications: RS-232

Accessories

(3)

Other Accessories

(3)

Replacement Parts

(2)

Ships With

(2)

Operator's Manual
10873
Serial Data Cable, 9-Pin Socket (Female) to 9-Pin Pin (Male)
Orderable

Compatibility

Communications

The CR205's internal spread spectrum radio can transmit data to other CR205 loggers or RF400 radios. It can also communicate with CR206(X) loggers, RF401 radios, or RF430 radios if they are set to the transparent mode. Certain CR205 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.

The CR205 can communicate with a PC via direct connect, NL100 Ethernet interface, MD485 multidrop modem, and digital cellular modems. Data can be viewed on the CD295 DataView II display, Archer-PCon Field PC, or a user-supplied PDA (PConnect or PConnectCE software required).

Measurement & Control Peripherals

The CR205 is not compatible with SDM devices and multiplexers.

Sensors

The CR205 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 CR205-based systems.

Power Supplies

The CR205 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 Ahr 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.