Campbell Scientific’s new Micrologger®, the CR3000, has replaced the CR23X. The CR3000 is a rugged, self-contained package with an integrated keyboard, display, and power supply. Design features include:
- Processing speed that is four times faster than the CR1000 and seven times faster than the CR23X
- 16-bit resolution on five analog ranges
- Dedicated SDM channels
- Two switched 12 V outputs
- Current excitation (Ix) for resistance measurements
- Four Mbyte storage capacity
- Electronically isolated RS-232 port
- Removable, labeled terminal strips that are lockable
- PakBus® communication protocol
- Backlit, 128 x 64 pixel graphical or eightline numeric LCD display
- Identical footprint to the CR23X
I/O Channels
For measurement and control, the CR3000 provides 14 differential/28 single-ended analog inputs, four switched voltage excitation channels, three current excitation channels, four pulse inputs, 21 analog grounds, five power grounds, one +5 V terminal, two 12 V terminals, two switched 12 V terminals, eight digital I/O terminals, and three SDM terminals.
Pulse count inputs and all digital I/O ports have the ability to count pulses using 24-bit counters that handle the maximum input frequencies. Earlier dataloggers had 16-bit counters that needed special treatment for higher frequencies. Pulse count inputs count switch closures, “high frequency,” and low-level AC signals. The digital I/O inputs count switch closures and “high frequency” signals without additional signal conditioning. Digital I/O ports can also be used to count low-level AC signals with the addition of the LLAC4 module.
For communications, the CR3000 provides an electronically-isolated RS-232 port and a CS I/O port. Additionally, eight digital I/O terminals can be configured as pairs (transmit and receive) for up to four independent communications (COM) ports. These COM ports support serial communication from 300 to 115200 baud, and can be used to:
- Collect data from “smart” sensors
- Communicate between dataloggers
- Connect to another modem or network link
- “Pass through” communications from a modem on the CS I/O or RS-232 port to a digital camera or other device connected to a COM port.
A parallel peripheral port that supports the CFM100 CompactFlash® Module is built in. The CFM100 uses the peripheral port to expand the CR3000’s memory using CompactFlash cards.
Battery Base Options
The alkaline base option includes 10 D-cell batteries with a 10 Ahr rating at 20°C. The rechargeable base option provides an internal 7 Ahr sealed rechargeable battery that can be trickle-charged via vehicle power, solar panels, or ac power. For charging the battery via ac power, a 110 Vac wall charger is offered for US customers or other countries with 110 Vac outlets. A 100 to 240 Vac wall charger is also available. When using vehicle power, our DCDC18R Boost Regulator is used to increase the vehicle’s supply voltage to charging levels required by the CR3000.
The low-profile (no battery) option requires a user-supplied dc source. It is used when the system’s power consumption requires a larger capacity battery or when it’s advantageous for the datalogger to have a smaller depth or weight.
Datalogger Programming
The CR3000 is programmed using CRBasic. CRBasic programs can be created using the Short Cut program generator or the CRBasic Editor. Short Cut generates CR3000 programs and wiring diagrams in four easy steps and supports almost all of Campbell Scientific sensors. The CRBasic Editor uses a flexible BASIC-like programming structure to create more complex CR3000 programs. Short Cut generated programs can be imported into the CRBasic Editor to add instructions or functionality not supported by Short Cut. Short Cut and the CRBasic Editor are available in LoggerNet 3.2 Datalogger Support Software.
For CR23X customers, LoggerNet 3.2 includes the Transformer application to convert existing CR23X Edlog programs to CR3000 CRBasic programs.
CR23X Availability
Limited quantities of CR23X Microloggers are available for purchase. As with all of our retired products, we will continue to service the CR23X as long as parts are available.
