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CR300

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CR300 is a Campbell Scientific compact measurement and control datalogger with fixed terminals, a 24-bit ADC, USB and RS-232 connectivity for small remote monitoring systems.
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Technical specifications for CR300

  • Manufacturer:
    Campbell Scientific
  • Part Number:
    CR300
  • Product Family:
    CR300 Series
  • Product Type:
    Measurement and Control Datalogger
  • Stock:
    1
  • Operating temperature range:
    -40 to +70 °C
  • Environmental condition:
    Non-condensing
  • Maximum scan rate:
    10 Hz
  • Case material:
    Powder-coated aluminum
  • Analog inputs:
    6 single-ended or 3 differential, individually configured
  • Pulse counters:
    8: P_SW, P_LL, C1, C2 and SE1 to SE4
  • Voltage excitation terminals:
    2: VX1 and VX2
  • Communication ports:
    USB Micro-B and RS-232
  • Switched 12 V terminal:
    1
  • Digital I/O:
    7 configurable terminals; SE4 does not support external interrupt
  • Analog input limits:
    -100 to +2500 mV
  • Analog voltage accuracy at 0 to 40 °C:
    ±(0.04% of measurement + offset)
  • Analog voltage accuracy at -40 to +70 °C:
    ±(0.1% of measurement + offset)
  • Analog-to-digital converter:
    24-bit
  • Charger input:
    16 to 32 Vdc; 0.9 A maximum current limit
  • External battery input:
    10 to 18 Vdc
  • Real-time clock accuracy:
    ±1 minute per month
  • Communication protocols:
    PakBus, Modbus, DNP3, SDI-12, TCP, UDP and others
  • CPU drive:
    80 MB serial flash for serial number 2813 or newer; 5 MB for serial number 2812 or older
  • Data storage:
    30 MB serial flash for serial number 2813 or newer; 10 MB for serial number 2812 or older
  • Average idle current:
    1.5 mA at 12 Vdc
  • Average active current:
    5 mA at 12 Vdc for a 1 Hz scan with one analog measurement
  • Processor-always-on current:
    23 mA at 12 Vdc
  • Weight:
    0.55 lbs (0.25 kg)
  • Estimated shipping dimensions:
    13.97 x 7.62 x 4.56 cm (5.5 x 3.0 x 1.8 in.); additional clearance is required for cables and leads
  • Tariff Code:
    Please confirm the destination before shipping.
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Communication Programming Monitoring & Control

Features:

  • Combines a 24-bit measurement system with individually configurable analog inputs.
  • Provides fixed terminals with digital I/O, pulse counting and switched excitation functions.
  • Stores CRBasic programs and measurement records in onboard serial-flash memory.
The current ordering configuration is CR300, the fixed-terminal measurement and control datalogger retained for service, documentation and compatibility information.

It acquires sensor signals, processes measurements, stores records and supports programmed control decisions for compact unattended monitoring stations.

Before integrating a legacy unit, confirm the serial-number memory generation, terminal wiring, power input, communication hardware and required program environment.

Availability is subject to Apter Power inventory and sourcing confirmation.
Verified resources for Campbell Scientific CR300: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Supports small hydrological and meteorological stations that require scheduled sensor measurements and long-term field data collection.
  • Serves environmental and industrial monitoring installations that combine local analysis with unattended remote operation.
  • Fits compact control projects where a low-power logger must acquire signals and make programmed field decisions.
  • USB Micro-B supports direct computer connection, while the RS-232 port provides serial integration with external equipment.
  • PakBus, Modbus, DNP3 and SDI-12 connect compatible Campbell networks, controllers and intelligent sensors.
  • The embedded web page and supported Internet protocols provide browser and remote-data services through a configured interface.
  • CRBasic defines measurement schedules, calculations, data tables, device control and communications for the field application.
  • Short Cut can generate straightforward sensor programs, while CRBasic Editor supports advanced logic and processing.
  • Program design must match the installed memory generation, scan timing and communication services before deployment.
  • Sensor readings can be reduced to calculated or statistical values before selected records are written to data tables.
  • Application logic can evaluate field conditions and switch connected devices for automated local or remote decisions.
  • Measurement and communication tasks operate together so recorded data reaches supervisory systems over the chosen path.
Description
CR300 is the fixed-terminal measurement and control datalogger in Campbell Scientific's compact CR300 Series. It combines configurable analog inputs, digital I/O, pulse counting and switched excitation with onboard program and data storage.

The logger measures connected sensors, executes CRBasic processing, stores selected results and makes programmed control decisions for unattended stations. USB, RS-232 and supported serial or Internet protocols provide setup and data-retrieval paths.

Confirm the serial-number memory generation, fixed-terminal wiring, power source, communication option and existing CRBasic program before replacement. The base model must not be treated as CR310 or a radio, Wi-Fi or cellular ordering variant without matching the label.
Alternative Names
CR300 CR-300 CR 300 Campbell Scientific CR300 Campbell CR300 CR300 Measurement and Control Datalogger Campbell Scientific CR300 Data Logger
Technical notes
CR300 programs and settings must be archived before replacement or an OS rollback; verify fixed-terminal wiring and the installed communication option.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which terminal arrangement distinguishes CR300 from CR310?
CR300 uses fixed field terminals, while CR310 adds removable terminals and native 10/100 Ethernet, so the two configurations are not identical.
Can an existing CRBasic application be moved to CR300 without review?
Review the program instructions, memory generation, scan timing, terminal assignments and communication services against the exact unit before deployment.
Which field projects are a practical fit for CR300?
It suits compact hydrological, meteorological, environmental and industrial stations that combine sensor measurement, data storage and programmed control.
What does the OEM lifecycle notice mean when sourcing CR300?
Campbell Scientific lists CR300 as retired and no longer available to order, so Apter Power confirms legacy stock or sourcing options for each inquiry.
Is CR1000X a drop-in replacement for CR300?
No automatic drop-in equivalence is stated; review the enclosure, terminals, CRBasic program, power, I/O and communication architecture before migration.
Which records should accompany a CR300 manual and quotation request?
Provide the label, serial number, communication option, existing program, wiring record, required quantity and destination so documentation and sourcing match the installation.

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