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这个产品是无效的且被替换: CR300,CR310.
CR295X 用于卫星通讯的数据采集器
Services Available
Repair Yes
Calibration Yes
Free Support Yes

概览

CR295X是我们最小巧的成本最低的数据采集器,测量一两个传感器,再使用GOES卫星发射器传输数据。多个CR295X可以被设置成数据采集器网络;或者,众多CR295X单元也可被逐个配置。CRBasic是完整的编程语言,支持简单或复杂的CR295X编程,以及很多在线的数据删减处理。CR295X还能在严酷的远程环境中独立工作。

优势与特点

  • Small, low-cost data logger designed for use with GOES satellite transmitters
  • When combined with the TX320 GOES satellite transmitter, the CR295X can be used in extremely remote locations.
  • Ideal applications include wind energy, rural water, water level/flow, aquaculture, water quality
  • Gas Discharge Tube (GDT) protected inputs
  • Optimal for measuring one or two simple sensors
  • Makes SDI-12, single-ended analog, pulse, switch closure, and bridge measurements
  • 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
  • PakBus, Modbus, and SDI-12 protocols supported

图像

技术说明

CR295X包括一个额外的RS-232串口,与TX320、TX312 或 SAT HDR GOES卫星发射器进行通讯。CR295X有几个输入通道,可以测量一系列的传感器。气体放电管为输入通道提供了坚固耐用的电子放电保护功能。

CR295X不可以作差分测量,也不支持SDM设备、扩展板或热电偶(参阅兼容性标签查找可兼容的传感器、外设和软件)。没有提供给CR295X数据采集器的再校准服务。

产品规格

-NOTE- Note: Additional specifications are listed in the CR200X-Series Specifications Sheet.
Maximum Scan Rate 1 Hz
Analog Channels
  • The single-ended analog inputs can also be used as control ports.
  • 5 single-ended (no differential) individually configured
Pulse Count Channels 2
Switched Excitation Channels 2 voltage
Digital Ports
  • Certain digital ports can be used to count switch closures.
  • 2 I/O
Communication Ports 2 RS-232
Switched Battery Port 1
Input Voltage Range 0 to 2500 mV
Analog Voltage Accuracy ±(0.25% of reading + (1.2 mV)x(offset)) at -40° to +50°C
Analog Voltage Resolution 0.6 mV
A/D Bits 12
Operating Temperature -40° to +50°C
Power Requirements 7 to 16 Vdc
Typical Current Drain
  • ~0.2 mA (quiescent)
  • ~3 mA (active)
Protocols Supported PakBus (leaf node only), SDI-12
Warranty 3 years
Dimensions 14.0 x 7.6 x 4.8 cm (5.5 x 3.0 x 1.9 in.)
Weight 242 g (8.5 oz)

Memory

Final Storage 512 kB of flash memory for approximately 125,000 data points
Operating System 106 kB of flash memory
Intermediate Storage 8 kB of SRAM for communication buffers, calculations, variables, etc.

兼容性

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

软件

Product Compatible Note
LOGGERNET Version 2.1 or higher
PC200W
PC400 Version 1.0 or higher
PCONNECT (retired) Version 3.0 or higher
PCONNECTCE (retired) Version 2.0 or higher
Short Cut
VISUALWEATHER Version 2.0 or higher

Additional Compatibility Information

Communications

The CR295X is compatible with our TX320, TX312 (retired), and SAT HDR GOES (retired) satellite transmitters.

The CR295X can communicate with a PC via direct connect, NL201 Network Link Interface, NL240 Wi-Fi Network Link, MD485 multidrop modem, and digital cellular modems. Data can be viewed on an iOS device, an Android device, CD295 DataView II Display, or a user-supplied PDA. To use an iOS or Android device, go to the Apple Store or Google Play and download our LoggerLink Mobile Apps free of charge. User-supplied PDAs require either PConnect or PConnectCE software.

Measurement & Control Peripherals

Campbell Scientific’s SDM devices and multiplexers are not supported.

Power Supplies

Typical power supply is a BP12 12 Ahr or BP24 24 Ahr battery, CH100 or CH200 regulator, and an SP10 or SP20 solar panel. The CR295X includes a cable for connecting it with the satellite transmitter and power supply.

Enclosures

An ENC16/18 enclosure can house the CR295X logger, satellite transmitter, and power supply; smaller enclosures cannot house the power supply required for GOES communications. Hardware is included with the data logger for mounting to an enclosure backplate.

Sensors

The CR295X can measure a variety of sensors including SDI-12 sensors and 4 to 20 mA sensors. It cannot make differential measurements and is not compatible with the freezing-rain/ice, fuel moisture/temperature, geographic position, present weather, soil heat flux, soil matric water potential, and strain sensors listed on our price lists.

下载

CR200X Series OS v.04 (1.29 MB) 22-09-2015

Execution of this download installs the Operating System and Compiler on your computer for the following dataloggers:CR200X, CR206X, CR211X, CR216X and CR295X.  It also updates the support files for the CRBasic Editor.  

Note: Newer CR206X dataloggers (serial # ≥ 19122) and newer CR211X dataloggers (serial # ≥ 19143) have 250 mW radios that must use OS 3 or higher for their datalogger operating system.

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常见问题解答

CR295X: 39

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  1. Not directly. If the CS15-L is connected to a CR200(X) datalogger, the data logger can take the ac measurement and control a solid-state relay based on some threshold within the data logger program. The solid-state relay can then control other relays, solenoids, or motor starters. (Use of a solid-state relay is preferred because the data logger can trigger it with a small 5 Vdc mA signal.) For more information, see the “Measurement and Control Peripherals” section of the operator’s manual.

  2. Yes. The simplest method is to use conditional program statements that execute most of the code based on time. For example, the data could be scheduled to log at 6 a.m. and finish at 8 p.m. using CRBasic instructions such as IfTime(). Another option is to use an IfThen/EndIf construction that does a logical test of light-level measurements based on a light sensor. An additional option is to use calculated sunrise and sunset times along with a combination of RealTime() and Case instructions.

    For more information, see the “Decisions, Decisions, Decisions…” article. 

  3. Technically, the SRM-5A is compatible with the CR200X-series dataloggers, but it is more complicated to use it with these data loggers. To use a SRM-5A with a CR200X-series datalogger, the SRM-5A must be in the DTE position on the station modem. In addition, user-supplied adapters and gender changers are needed to complete the connections between the SRM-5A and the RS-232 port of the data logger. Contact Campbell Scientific for more information.

  4. If small amounts of data are transferred per transmission, it will not be a problem. Larger amounts of data can overrun buffers in the modem, causing lost data. In that situation, lower the baud rate on the data logger to avoid the issue.

  5. This might happen because the data logger clock is being adjusted by a remote time source. If this occurs close to the same time that the data logger is due to store data, it can result in either a skipped record or an additional record of data.

    If LoggerNet 4 is used to collect data on a schedule, check the setup for that data logger. Look at the settings on the Clock tab in the LoggerNet Setup Screen. If that is enabled, the clock is checked and set at midnight every day and may interfere with data collection at that same time.

    Skipped scans and power outages could also result in records missing from a data table. Check the data logger’s station status or Status table and look for skipped scans, watchdogs, and low 12 V counts.

  6. Some Campbell Scientific sensors with an RS-232 output are supported in Short Cut. Because of the large variety of serial data formats, other sensors require creating a program in the CRBasic Editor. CRBasic Editor is included in several of the purchased software packages, such as LoggerNet. For more information, see the “Interfacing Serial Sensors with Campbell Scientific Dataloggers” application note.

    Note: The CR200X-series dataloggers have very limited serial capabilities.

  7. Current data loggers compatible with the BMP5 Direct SDK are the CR200X-series, CR1000, CR3000, CR800, and CR850.

    Retired compatible data loggers include the CR10X-PB, CR23X-PB, and CR510-PB. These data loggers must have the optional PakBus operating system installed, which is available on the Downloads page of our website.

  8. The maximum cable length depends on the interface being used.

    • RS-232 connections will reach 15 m (50 ft).
    • RS-485 connections go beyond 610 m (2,000 ft).
    • IP connections can be routed worldwide. 
  9. The available COM ports listed in the COM Port drop-down menu are supplied to PC400 by the Windows Operating  System (OS). If there are no COM ports shown for selection, it most likely means that there are no COM ports registered with the Windows OS. This can be confirmed using the Windows Device Manager (Control Panel | Device Manager | Ports).

    Most modern laptops are not equipped with native RS-232 COM ports. In this situation, a USB-to-RS-232 adapter cable must be used to connect to the data logger. Even when the drivers for this device have been properly installed, the derived COM port will not be shown for selection until the cable is attached to the laptop.

  10. No, because it would not work. The SC32B is used to do the following:

    • Convert data logger logic levels (on the CS I/O port) to RS-232 levels 
    • Optically isolate the data logger from the RS-232 peripheral 

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