CR350 Measurement and Control Datalogger

Compact data logger with RS-485, ideal for small applications

The CR350 is a multi-purpose, extremely low power, compact measurement and control data logger. This entry-level data logger, with its rich instruction set, can measure most hydrological, meteorological, environmental, and industrial sensors. The CR350 concentrates data, makes it available over varied networks, and delivers it using your preferred protocol. The CR350 also performs automated on-site or remote decision-making for control and M2M communications. This data logger is ideal for small applications requiring long-term, remote monitoring and control.

Category:

The CR350 is a low-powered data logger designed to measure sensors, analyze data, and store data and programs. A battery-backed clock assures accurate timekeeping. The on-board, BASIC-like programming language—common to all Campbell Scientific data loggers—supports data processing and analysis routines.

Terminal Descriptions

  • Two switched 12 V terminals (SW12V) for powering sensors or communication devices, 2100 mA
  • Two sensor excitation or continuous 0.15 to 5 V terminals (VX1, VX2) for sensor excitation or output control
  • Four multipurpose analog input terminals (SE1–SE4)
    • Analog functions (SE1–SE4)
      • Analog inputs: 4 single-ended or 2 differential inputs with -100 to +2500 mV and ±34 mV ranges 24 bit ADC
      • 4 to 20 mA or 0 to 20 mA inputs (SE1, SE2 only)
    • Digital I/O functions (SE1–SE4) consist of 3.3 V logic levels for:
      • High frequency counter (35 kHz)
      • Pulse width modulation
      • Interrupts and timer input
      • Period average (200 kHz, amplitude dependent)
  • Two Pulse Counting Terminals (P_SW, P_LL)
    • P_SW
      • Switch closure (150 Hz)
      • High frequency counter (35 kHz)
    • P_LL
      • Low level ac (20 kHz)
      • High frequency counter (20 kHz)
  • Two Control Terminals (C1, C2): C terminals are software configurable for digital functions
    • Digital I/O functions consist of 5 V output and 3.3 V input logic levels for:
      • SDI-12
      • High frequency counter (3 kHz)
      • Switch closure (150 Hz)
      • General status/control voltage source 5 V; 10 mA @ 3.5 V
      • Interrupts
      • Serial asynchronous communication Tx/Rx pair

Benefits and Features

    • Two dedicated SDI-12 terminals to expand SDI-12 sensor use
    • Extremely low current requirements
    • Two dedicated RS-232/RS-485 terminals to support smart sensors or modems
    • Easy setup with PC software and USB-C connectivity
    • Ability to measure analog and digital sensors with confidence
    • Trusted Campbell Scientific quality, including integral surge and ESD protection
    • Integrated radio option to network wirelessly to another node or Internet gateway
    • CR350-WIFI ideal for short-range, wireless IP communication
    • Removable terminal block for easy wiring
    • Ability to communicate anywhere using built-in cellular or satellite peripherals
    • Integrated 12 V battery solar charge regulator to charge batteries
    • Flexibility to connect with PakBus, Modbus, DNP3, GOES, and other standard communication protocols
    • Multiple general-purpose I/O and programmability to analyze and control measurement acquisition
    • Event-driven communications and physical outputs for notifications
Operating Temperature Range
  • -40° to +70°C
  • Non-condensing environment
Maximum Scan Rate 10 Hz
Case Material High-impact-resistant polycarbonate, recycle code 7
Analog Inputs 4 single-ended or 2 differential (individually configured)
Pulse Counters 8 (P_SW, P_LL, C1, C2, and SE1 to SE4)
Voltage Excitation Terminals 2 (VX1, VX2)
Communications Ports
  • USB Type C 2.0
  • RS-232
  • RS-485
Switched 12 Volt 2 terminals
Digital I/O 7 terminals (C1, C2, P_SW, and SE1 to SE4) configurable for digital input and output. Includes status high/low, pulse width modulation, external interrupt, and communication functions. Exception: C2 and P_SW don’t do pulse-width modulation.
Analog Input Limits -100 to +2500 mV
Analog Voltage Accuracy
  • Accuracy specifications do not include sensor or measurement noise.
  • ±(0.04% of measurement + offset) at 0° to 40°C
  • ±(0.1% of measurement + offset) at -40° to +70°C
ADC 24-bit
Power Requirements 16 to 32 Vdc for charger input (CHG) (Current limited to 1.1 A maximum for power converter or solar panel input.)
Real-Time Clock Accuracy ±3 min. per year
Internet Protocols Ethernet, PPP, RNDIS, ICMP/Ping, Auto-IP(APIPA), IPv4, IPv6, UDP, TCP, TLS (v1.2), DNS, DHCP, SLAAC, NTP, Telnet, HTTP(S), FTP(S), SMTP/TLS, POP3/TLS, MQTT(S)
Communication Protocols PakBus, PakBus Encryption, Modbus RTU/ASCII/TCP, DNP3, SDI-12, and others
CPU Drive/Programs 50 MB serial flash
Data Storage 50 MB serial flash
Idle Current Drain, Average 0.5 mA (@ 12 Vdc)
Active Current Drain, Average
  • < 1.5 mA (@ 12 Vdc for 1 Hz scan with 1 analog measurement)
  • 8 mA (@ 12 Vdc with processor always on)
Dimensions 16.3 x 8.4 x 5.6 cm (6.4 x 3.3 x 2.2 in.)

Additional clearance required for cables and leads.

Weight 288 to 306 g (0.64 to 0.68 lb) depending on communication option selected
CR350-RF407 Option
Radio Type Frequency Hopping Spread Spectrum (FHSS)
Output Power 5 to 250 mW (user-selectable)
Frequency 902 to 928 MHz (US, Canada)
RF Data Rate 200 kbps
Receive Sensitivity -101 dBm
Antenna Connector RPSMA (External antenna required; see www.campbellsci.com/order/rf407 for Campbell Scientific antennas.)
Idle Current Drain, Average 12 mA (@ 12 Vdc)
Active Current Drain, Average < 80 mA (@ 12 Vdc)
CR350-RF412 Option
Radio Type Frequency Hopping Spread Spectrum (FHSS)
Output Power 5 to 250 mW (user-selectable)
Frequency 915 to 928 MHz (Australia, New Zealand)
RF Data Rate 200 kbps
Receive Sensitivity -101 dBm
Antenna Connector RPSMA (External antenna required; see www.campbellsci.com/order/rf412 for Campbell Scientific antennas.)
Idle Current Drain, Average 12 mA (@ 12 Vdc)
Active Current Drain, Average < 80 mA (@ 12 Vdc)
CR350-RF422 Option
Radio Type 868 MHz SRD 860 with Listen Before Talk (LBT) and Automatic Frequency Agility (AFA)
Output Power 2 to 25 mW (user-selectable)
Frequency 863 to 870 MHz (European Union)
RF Data Rate 10 kbps
Receive Sensitivity -106 dBm
Antenna Connector RPSMA (External antenna required; see www.campbellsci.com/order/rf422 for Campbell Scientific antennas.)
Idle Current Drain, Average 9.5 mA
Active Current Drain, Average 20 mA
CR350-RF427 Option
Radio Type Frequency Hopping Spread Spectrum (FHSS)
Output Power 5 to 250 mW (user-selectable)
Frequency 902 to 907.5 MHz/915 to 928 MHz (Brazil)
RF Data Rate 200 kbps
Receive Sensitivity –101 dBm
Antenna Connector RPSMA (External antenna required)
Idle Current Drain, Average 12 mA (@ 12 Vdc)
Active Current Drain, Average < 80 mA (@ 12 Vdc)
CR350-RF452 Option
Radio Type Frequency Hopping Spread Spectrum (FHSS)
Output Power 10 mW to 1,000 mW (user-selectable)
Frequency 902 to 928 MHz
RF Data Rate 115.2 or 153.6 kbps
Receive Sensitivity
  • -108 dBm (@ 115.2 kbps for 10-4 BER
  • -103 dBm (@ 153.6 kbps for 10-4 BER
Antenna Connector RPSMA (External antenna required)
Idle Current Drain, Average < 29 mA (maximum @ 12 Vdc)
Active Current Drain, Average < 84 mA (maximum @ 12 Vdc)
CR350-WIFI Option
Operational Modes Client or Access Point
Operating Frequency 2.4 GHz, 20 MHz bandwidth
Antenna Connector Reverse Polarity SMA (RPSMA)
Antenna pn 16005 unity gain (0 dBd), 1/2 wave whip, omnidirectional with articulating knuckle joint for vertical or horizontal orientation
Transmit Power 7 to 18 dBm (5 to 63 mW)
CR350-CELL205 Option
-NOTE- The CR350-CELL205 option is not compatible with a Verizon cellular network.
Certifications IC (Industry Canada) 10224A-201611EC21A
Cell Technologies
  • 3G (UMTS/HSPA+)
  • 4G (LTE CAT-1)
3G Frequency Bands 850, 1700/2100 (AWS), and 1900
4G Frequency Bands 700, 850, 1700/2100 (AWS-1), 1900
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Idle 14 mA (average)
Power Consumption – Active 75 mA (average)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Radio Output Power
  • 23 dBm on LTE
  • 24 dBm on UMTS
  • 27 dBm on EDGE
  • 33 dBm on GSM
Radio Sensitivity Range -99.5 to 110.5 dBm (10 M)
CR350-CELL210 Option
-NOTE- The CR350-CELL210 option is only compatible with a Verizon cellular network.
Cell Technologies 4G (LTE CAT-1)
4G Frequency Bands 700, 850, 1700, 1900, 2100
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Low Power Mode 5 mA
Power Consumption – Idle 28 mA (average)
Power Consumption – Active 90 mA (average)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Radio Output Power 23 dBm on LTE
Radio Sensitivity Range -99.5 to 110.5 dBm (10 M)
CR350-CELL215 Option
-NOTE- The CR350-CELL215 option is intended for use in EMEA countries.
Cell Technologies
  • 2G (GSM/GPRS/EDGE)
  • 3G (UMTS/HSPA+)
  • 4G (LTE CAT-1)
2G Frequency Bands 900 and 1800 MHz
3G Frequency Bands 850, 900, and 2100 MHz
4G Frequency Bands 800, 850, 900, 1800, 2100, and 2600 MHz
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Idle 14 mA (average)
Power Consumption – Active 75 mA (average)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Radio Output Power
  • 23 dBm on LTE
  • 24 dBm on UMTS
  • 27 dBm on EDGE
  • 33 dBm on GSM
Radio Sensitivity Range -99.5 to 110.5 dBm (10 M)
CR350-CELL220 Option
-NOTE- The CR350-CELL220 option is intended for use in Australia and New Zealand.
Cell Technologies
  • 3G (UMTS/HSPA+)
  • 4G (LTE CAT-1)
3G Frequency Bands
  • 850 and 2100 MHz (EC-21AUT)
  • 850, 900, 1900, and 2100 MHz (EC-21AU)
4G Frequency Bands
  • 700, 850, 1800, 2100, and 2600 MHz (EC-21AUT)
  • 700, 900, 1700, 1800, 1900, 2100, and 2600 MHz (EC-21AU)
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Idle 14 mA (average)
Power Consumption – Active 75 mA (average)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Radio Output Power
  • 23 dBm on LTE
  • 24 dBm on UMTS
Radio Sensitivity Range -99.5 to 110.5 dBm (10 M)
CR350-CELL225 Option
-NOTE- The CR350-CELL225 option is intended for use in Japan.
Cell Technologies 4G (LTE CAT-1)
4G Frequency Bands 800 (lower), 800 (upper), 850+, 900, 1800, and 2100 MHz
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Idle 14 mA (average)
Power Consumption – Active 75 mA (average)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Radio Output Power 23 dBm on LTE
Radio Sensitivity Range -99.5 to 110.5 dBm (10 M)
CR350-CELL230 Option
Cell Technologies LTE-Cat M, NB-IoT
Frequency Bands
  • LTE M B1/B2/B3/B4/B5/B8/ B12/B13/B18/B19/ B20/B25/B26/B27/B28/B66/B85
  • LTE NB-IoT B1/B2/B3/B4/B5/B8/ B12/B13/B18/B19/ B20/B25/B28/B66/B71/B85
Antenna Connector SMA (External antenna required; see www.campbellsci.com/order/cr350 for Campbell Scientific antennas.)
Power Consumption – Idle 23 mA average (26 mA if GPS is on)
Power Consumption – Active 50 mA average (53 mA if GPS is on)
SIM Interface 3FF (6 position/contacts)

Supports SIMs that require 1.8 or 3 V

Brochures: CR350 Measurement and Control Datalogger

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Brochures: CR350 Series Specifications Sheet

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