CR850

Name: CR850
Brand: Campbell Scientific
SKU: 18788
Availability: Discontinued

Measurement and Control Datalogger

CR850

Retired

Measurement and Control Datalogger

No longer available to order

This product is retained for service, documentation, and compatibility information.

Replaced by

CR350
Measurement and Control Datalogger

Model:: CR850
Item Number:: 18788
Warranty:: 3 years

Overview

The CR850 is a smaller, research-grade data logger 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 data logger can provide stand-alone operation in harsh, remote environments.

Key Advantages

Smaller, Simpler Data Logger
Research-grade power with built-in keyboard and display

Technical 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 data logger program that can be initiated by a simple “toggle” or “pick list”. Its keyboard and display screen is used to program the data logger, 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 data logger. 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.

Product Notes

needs power supply

Benefits

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 data logger is disconnected from battery power
Program with LoggerNet, PC400, or Short Cut to fit your setup

Specifications

-NOTE-: Note: Additional specifications are listed in the CR800-Series Specifications Sheet.
Operating Temperature Range: -25° to +50°C
(standard)
Non-condensing environment
Maximum Scan Rate: 100 Hz
Analog Inputs: 6 single-ended or 3 differential
(individually configured)
Pulse Counters: 2
Voltage Excitation Terminals: 2
(VX1, VX2)
Communications Ports: CS I/O
RS-232
Switched 12 Volt: 1 terminal
Digital I/O: 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.
Input Limits: ±5 V
Analog Voltage Accuracy: ±(0.06% of reading + offset)
at 0° to 40°C
ADC: 13-bit
Power Requirements: 9.6 to 16 Vdc
Real-Time Clock Accuracy: ±3 min. per year
(Correction via GPS optional.)
Internet Protocols: FTP, HTTP, XML POP3, SMTP, Telnet, NTCIP, NTP
Communication Protocols: PakBus, Modbus, DNP3, SDI-12, SDM
Idle Current Drain, Average: 1 mA
(@ 12 Vdc)
Active Current Drain, Average: 1 to 16 mA
(1 Hz sample rate @ 12 Vdc without RS-232 communication)
16 mA
(100 Hz sample rate @ 12 Vdc without RS-232 communication)
28 mA
(100 Hz sample rate @ 12 Vdc with RS-232 communication)
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)

Accessories

(4)

Common Accessories

(4)

Other Accessories

(1)

27373
14 to 28 AWG 5-Position Terminal Connector with Lever Nut
The 27373 facilitates connecting multiple wires into the same terminal, such as for SDI-12.
Orderable

Replacement Parts

(9)

Services

(4)

Similar Products

(2)

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).