CR850 Measurement and Control Datalogger with Built-in Keyboard and Display
Smaller, Simpler Datalogger
Research-grade power with built-in keyboard and display
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications

Overview

The CR850 is a smaller, research-grade datalogger that includes an on-board keyboard display as part of its integrated package. It is intended for smaller configurations in which fewer sensors will be measured. Each CR850 reads input from sensors, then transmits the data via a communication peripheral; most sensors and telecommunication devices are compatible. Multiple CR850s can be configured as a network or units can be deployed individually. This rugged datalogger can provide stand-alone operation in harsh, remote environments.

Read More

Benefits and Features

  • Integrated keyboard and display screen let you program, manually initiate data transfers, and view data, all on site.
  • Ideal applications include wind profiling, weather stations, ETo/agriculture, air quality, soil moisture, water level/stage, aquaculture, vehicle testing, Time Domain Reflectometry, SCADA, and water quality
  • Simpler in design, the CR800 and CR850 are easier to program and wire.
  • Serial communications with serial sensors and devices supported via I/O port pairs
  • Contains custom ASIC chip that expands pulse count, control port, and serial communications capabilities
  • Supports PakBus, Modbus, SDI-12, and DNP3 protocols
  • Compatible with channel expansion peripherals allowing you to expand your system
  • Includes both an CS I/O port and an RS-232 port for connecting communication devices
  • Gas Discharge Tube (GDT) protected inputs
  • Battery-backed clock that ensures accurate time is maintained while datalogger is disconnected from battery power
  • Program with LoggerNet, PC400, or Short Cut to fit your setup

Images


CAD Files:

Please login or register to view 3D files.

Detailed Description

The CR850 consists of measurement electronics encased in a plastic shell with an integrated wiring panel, 16- character keyboard, and display screen. The display can show 8 lines x 21 characters (64 x 128 pixels). Custom menus are supported allowing customers to set up choices within the datalogger program that can be initiated by a simple “toggle” or “pick list”. Its keyboard and display screen is used to program the datalogger, manually initiate data transfer, and display data.

The CR850 uses an external  power supply. Low power consumption allows the it to operate for extended periods on a battery recharged with a solar panel—eliminating the need for AC power. The CR850 suspends execution when primary power drops below 9.6 V, reducing the possibility of inaccurate measurements.

The on-board operating system includes measurement, processing, and output instructions for programming the datalogger. The programming language, CRBasic, uses a BASIC-like syntax. Measurement instructions specific to bridge configurations, voltage outputs, thermocouples, and pulse/frequency signals are included. Processing instructions support algebraic, statistical, and transcendental functions for on-site processing. Output instructions process data over time and control external devices.

Specifications

-NOTE- Note: Additional specifications are listed in the CR800-Series Specifications Sheet.
Maximum Scan Rate 100 Hz
Analog Inputs 6 single-ended or 3 differential (individually configured)
Pulse Counters 2
Switched Excitation Channels 2 voltage
Digital Ports
  • Certain digital ports can be used to count switch closures.
  • 4 I/Os or 2 RS-232 COM
    I/O ports can be paired as transmit and receive for measuring smart serial sensors.
Communications Ports
  • 1 CS I/O
  • 1 RS-232
Switched 12 Volt 1
Input Voltage Range ±5 Vdc
Analog Voltage Accuracy ±(0.06% of reading + offset) at 0° to 40°C
Analog Resolution 0.33 µV
A/D Bits 13
Power Requirements 9.6 to 16 Vdc
RTC Clock Accuracy ±3 min. per year (Correction via GPS optional.)
Protocols Supported PakBus, Modbus, DNP3, FTP, HTTP, XML POP3, SMTP, Telnet, NTCIP, NTP, SDI-12, SDM
CE Compliance Standards to which Conformity Is Declared IEC61326:2002
Warranty 3 years
Dimensions 24.1 x 10.4 x 5.1 cm (9.5 x 4.1 x 2 in.)
Weight 0.7 kg (1.5 lb)

Temperature Range

Standard -25° to +50°C
Extended -30° to +80°C

Memory

Operating System 2 MB flash
CPU Usage, Program Storage & Data Storage 4 MB

Current Drain

Sleep Mode
  • 0.7 mA (typical)
  • 0.9 mA (max)
Active
  • 1 to 16 mA typical (without RS-232 communication)
  • 17 to 28 mA typical (with RS-232 communication)

Compatibility

Sensors

With several channel types, the CR850 is compatible with nearly every available sensor, including thermocouples, SDI-12 sensors, and 4 to 20 mA sensors. A custom ASIC chip expands its pulse count, control port, and serial communications capabilities. The CR850's I/O ports can be paired as transmit and receive, allowing serial communications with serial sensors and devices.

Measurement & Control Peripherals

The CR850 is compatible with all of our CDMs (requires an SC-CPI), SDMs, multiplexers, vibrating-wire interfaces, terminal input modules, and relays. 

Communications

The CR850 communicates with a PC via direct connect, NL201 Ethernet Interface, multidrop modems, short haul modems, phone modems (land line, digital cellular, and voice-synthesized), RF telemetry, and satellite transmitters (Argos and High Data Rate GOES).

Data can be viewed on its onboard keyboard display, CD100 Mountable Display with Keypad, user-supplied iOS or Android device (requires LoggerLink), CD295 DataView II Display, or a user-supplied PDA (PConnect or PConnectCE software required).

The SC115 is the only compatible external data storage device. The CR850 does not have a peripheral port and is therefore not compatible with the CFM100, NL115, or NL120.

Enclosures

The CR850 and its power supply can be housed in any of our standard enclosures. 

Power

Any 12 Vdc source can power the CR850 datalogger. Power supplies commonly used with the CR850 are the BPALK, PS100, and PS200. The BPALK provides eight non-rechargeable D-cell alkaline batteries with a 7.5 A h rating at 20°C.

Both the PS100 and PS200 consist of a sealed rechargeable 7 A h battery and a charging regulator. Their battery should be connected to a charging source (either a wall charger or solar panel). These two power supplies differ in their charging regulator. The PS100 has a standard regulator and the PS200 has a micro-controller-based smart regulator. The PS200's regulator provides two-step constant voltage charging and temperature compensation that optimize battery charging and increases the battery’s life.

Also available are the BP12 and BP24 battery packs, which provide nominal ratings of 12 and 24 A h, respectively. These batteries should be connected to a regulated charging source (e.g., a CH100 or CH200 connected to a unregulated solar panel or wall charger).

Software

CRBasic, the CR850's full programming language, supports simple or complex programming and many onboard data reduction processes. Compatible software includes:

  • Short Cut
  • PC200W
  • PC400 (version 1.4 or higher)
  • LoggerNet (version 3.3 or higher)
  • RTDAQ
  • PConnect (version 3.3 or higher)
  • PConnectCE (version 2.2 or higher)
  • VisualWeather (version 2 or higher)

Downloads

CR800 OS v.31.08 (4.52 MB) 06-30-2017

Execution of this download installs the CR800 Operating System and Compiler on your computer.  It also updates the CR800 support files for the CRBasic Editor.  

Note: This OS has crossed the 2 Meg CR800 size limit for remote download.  The OS must be downloaded to the 2 Meg CR800 via direct connect with the Device Configuration Utility.  All OS download methods are supported by the 4 Meg CR800.

Upgrading from versions prior to version 28 of the Operating System will reset the datalogger’s CPU drive.  This is due to a change in the format of the file system from FAT16 to FAT32.  In order for the datalogger to operate correctly, as part of the upgrade, the CPU drive is formatted to FAT32.  Any programs stored and running from the CPU drive will be lost.  It is not recommended to update the datalogger’s Operating System over a remote connection where program control regulates the communication equipment (turning it on or off, etc.).  In these cases, an on-site visit and a backup using DevConfig’s backup utility is necessary to update the datalogger’s Operating System.

Watch the Video Tutorial: Sending an OS to a Local Datalogger.

In all cases where the datalogger is being updated from an Operating System prior to 28, the use of DevConfig’s backup utility is recommended due to the CPU drive being formatted using the new FAT32 format.

View Update History

Device Configuration Utility v.2.16 (46.3 MB) 08-18-2017

A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.

Supported Operating Systems:

Windows 10, 8.1, 8, and 7 (Both 32 and 64 bit)

View Update History

Frequently Asked Questions

Number of FAQs related to CR850: 148

Expand AllCollapse All

  1. Yes, using the DisplayMenu/EndMenu() and MenuItem instructions.
  2. No. The display has its own OS that is not programmable using CRBasic.
  3. Baler 2.2 was developed before the release of the CR800 and, therefore, does not work with it.The latest version of Baler does work with the CR800 and can be found in the Downloads section of the Baler product page.

    Note: As newer versions of Baler are released, upgrades to older versions may not work. The notes associated with the upgrade or patch indicate which previous version needs to be installed before installing the upgrade.

  4. Yes. The CR800 and CR850 are compatible with exactly the same options as the CR1000 but with a lower channel count.

  5. Yes, unless the CR1000 program contains measurement instructions for channels not available on the CR800 or CR850.
  6. Yes. Refer to the SerialIn() and SerialOut() instructions in the CRBasic Editor.
  7. Yes. Many customers use the Iridium satellite transceiver.
  8. This can be done using the PakBus networking instruction SendGetVariables(), among other possible solutions. See the datalogger manual for detailed instructions and help.

Case Studies

New Mexico: Weather Monitoring
Chevron Mining, Inc., (CMI) owned and operated a 6.6 million-metric-ton-per-year (6.6 million-U.S.-ton) molybdenum mining and......read more
South Dakota: Canal-Based Irrigation System
The semiarid region just north of the Black Hills in western South Dakota has vast......read more
North Carolina: ALERT Stations Updated
The Charlotte-Mecklenburg Flood Information and Notification System (FINS) consists of over 125 gaging stations spread......read more
Mexico: Six Airports Get Automatic Weather Stations
Weather is, of course, a critical component of safe and efficient air travel. Pilots, navigators,......read more
New Zealand: Water Quality Monitoring
High-grade coal has been mined on the West Coast of New Zealand since the 1870s.......read more