It can also automatically control calibration
sequences and compute conditional averages that
exclude invalid data. The CR3000 measures sensors,
communicates via modems, reduces data, controls
external devices, and stores both data and programs
in either non-volatile Flash memory or
battery-backed SRAM. The standard 1 Mbyte memory
stores 500,000 data points in two final storage
areas. With the 4 Mbyte option, the CR3000 can store
over 2 million data points.
The CR3000's operating system includes a
comprehensive set of measurement, processing, and
output/program control instructions to create a datalogger program. Measurement instructions
specific to 2-, 3-, 4-, and 6-wire bridge
configurations, voltage outputs, vibrating wire
sensors, SDI-12 sensors, thermocouples, Synchronous
Devices for Measurement (SDMs), and multiplexers are
standard. Most sensors can be measured directly by
the CR3000; Terminal Input Modules (TIMs) and other
interfaces provide signal conditioning for
A 16-Character Keyboard allows on-site editing of
CR3000 programs and manual entry of commands or data.
Analog Inputs - Twenty-four single-ended (12
differential) channels measure voltage levels with
15-bit resolution on five software selectable
Pulse Counting Channels - The CR3000 has four
8-bit (two 16-bit) pulse channels for measuring
switch closures, low-level ac pulses, and high
Digital Input/Output Ports - The CR3000 has eight
digital input/output control ports. All of the ports
can be used for output control and to sense the
status of external devices. Three of these ports can
read SDM peripherals and four of them can be
configured as pulse counters or interrupt inputs.
Continuous Analog Outputs - Two continuous analog
outputs with 15-bit resolution provide voltage
levels to strip chart recorders or proportional
Switched Excitation Outputs - Four outputs
provide precision excitation voltages for resistive
bridge measurements. The excitation is programmable
over a ±5000 mV range.
Power Connections - The continuous 5 V and 12 V
terminals are for connecting sensors and non-CSI
peripherals. The switched 12 V terminal is program
Storage and Retrieval Options
Solid-State and Card Storage Modules - reliably
store data and datalogger programs. The data and
programs can be downloaded later to a PC.
Direct Links use the CR3000's RS-232 port to
connect the datalogger to a computer. The CR3000 can
be connected to the computer over distances up to 50
Short Haul Modems provide local communications
between the CR3000 and a PC with an RS-232 serial
Multidrop Interfaces link a central computer and
up to 200 dataloggers on a single coaxial cable.
Radio Frequency (RF) Communication allows up to
254 stations to be interrogated over a single UHF or
Telephone Networks use landlines or cellular
transceivers for communications between the
datalogger and PC. Our voice synthesized modem
transmits the CR3000's data by voice.
Satellite Transmitters transmit data via the
GOES, Argos, or INMARSAT-C satellite systems.
PC200W Starter Software allows you to transfer
the datalogger's program and collect data via a
direct communications link. PC200W is available at
no charge with the CR23X.
Loggernet Datalogger Support Software is a
full-feature software. It supports:
- Direct and telecommunications links
- Datalogger programming for most commercially
available sensors, SDMs, multiplexers, and relays
- Real-time data display
- Report generation
Standard operating range is -25° to +50° C. With
the extended range options, the CR23X's electronics
(excluding batteries) are tested and guaranteed over
a -40° to +80° C range.
Datalogger, CR3000 only
Datalogger w/ 4 MB 5.5 lbs.