Name: Campbell Scientific CR350 - Measurement and Control Datalogger
Brand: Campbell Scientific
SKU: CR350
Price: 1195.00 USD
Availability: InStock

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.

The following outlines the primary differences between the CR300, CR310, and CR350 dataloggers:

The CR310 and CR350 offer removable connectors.
The CR310 includes a 10/100 Ethernet connection.
The CR350 has two independent RS-232/RS-485 ports and USB-C.

The CR350 includes Wi-Fi, cellular, or the following radio options for different regions:

CR350-RF407: US and Canada
CR350-RF412: Australia and New Zealand
CR350-RF422: Europe
CR350-RF427: Brazil

Note: Campbell Scientific does not recommend the CR350 for use as a PakBus router in networks with more than 50 devices. Large arrays or string variables may also reach memory limits. For such applications, a CR1000X Measurement and Control Datalogger is recommended.

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
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

Detailed Description

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

Specifications

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