Campbell RainVUE SDI-12 Series Product Manual
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Campbell RainVUE SDI-12 Series Product Manual

Precipitation sensors
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10/2020
Copyright © 2020
Campbell Scientific
CSL I.D - 1359

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Summary of Contents for Campbell RainVUE SDI-12 Series

  • Page 1 10/2020 Copyright © 2020 Campbell Scientific CSL I.D - 1359...
  • Page 3 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...
  • Page 5 About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in (square inch) = 645 mm Mass: 1 oz.
  • Page 7 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...

  • Page 9: Table Of Contents

    Table of contents 1. Introduction 2. Precautions 3. Initial inspection 4. QuickStart 5. Overview 6. Specifications 7. Installation 7.1 Siting 7.2 Mounting 7.3 Wiring 7.4 Data logger programming 7.4.1 SDI-12 programming 8. Operation 8.1 SDI-12 measurements 8.2 SDI-12 extended commands 8.3 SDI-12 version 1.4 identify measurement commands and responses 8.4 Rainfall intensity correction 8.5 Device Configuration Utility...
  • Page 10 C.1.1 Acknowledge active command (a!) C.1.2 Send identification command (al!) C.1.3 Start verification command (aV!) C.1.4 Address query command (?!) C.1.5 Change address command (aAb!) C.1.6 Start measurement commands (aM!) C.1.7 Start concurrent measurement commands (aC!) C.1.8 Start measurement commands with cyclic redundancy check (aMC! and aCC!) 34 C.1.9 Stopping a measurement command C.1.10 Send data command (aD0! …...

  • Page 11: Introduction

    3. Initial inspection Check the packaging and contents of the shipment. If damage occurred during transport, immediately file a claim with the carrier. Contact Campbell Scientific to facilitate repair or replacement. Check model information against the shipping documents to ensure the expected products and the correct lengths of cable are received.

  • Page 12: Quickstart

    On cables and cabled items, the model number is usually found at the connection end of the cable. Report any shortages immediately to Campbell Scientific. 4. QuickStart A video that describes data logger programming using Short Cut is available at: www.campbellsci.eu/videos/cr1000x-data logger-getting-started-program-part-3...
  • Page 13 5. Repeat steps three and four for other sensors you want to measure. Click Next. 6. In Output Setup, type the scan rate, a Table Name, and Data Output Storage Interval. Click Next. NOTE: Because of the delays using SDI-12, Campbell Scientific recommends measurement scans of 10 seconds or more. RainVUE-Series SDI-12 Precipitation Sensors...

  • Page 14: Overview

    7. Select the output options. 8. Click Finish and save the program. Send the program to the data logger if the data logger is connected to the computer. 9. If the sensor is connected to the data logger, check the output of the sensor in the data display in LoggerNet, RTDAQ, PC400, or PC200W to make sure it is making reasonable measurements.

  • Page 15: Specifications

    Features: Suitable for non-freezing precipitation and high intensity rain events Robust and versatile for applications where data precision and accuracy are critical Unique aerodynamic shape increases measurement accuracy in windy conditions Meets WMO recommendations for funnel area Adjustable mounting feet to simplify levelling Sensor returns tilt, temperature, and supply voltage for sensor diagnostics Compatible CRBasic data loggers: GRANITE-series, CR6, CR3000, CR1000X, CR800-series, CR300-series, and CR1000...

  • Page 16: Installation

    RainVUE-series should not be installed over a large paved or concrete surface. 7.2 Mounting The RainVUE-series has three equally-spaced levelling feet. Next to each levelling foot is a hole for securing the sensor to a flat surface. The CM241 mounting bracket offered by Campbell Scientific RainVUE-Series SDI-12 Precipitation Sensors...
  • Page 17 allows the RainVUE-series to be mounted on a CM300-series mounting pole or to a user- supplied 1.5 in. IPS (1.9 in. OD) unthreaded pipe. Mounting poles are placed directly into a concrete foundation, attached to a concrete foundation with the J-bolts, or are self-supporting with three legs (see FIGURE 7-1 (p.
  • Page 18 Procedure for mounting to a CM241 bracket and levelling the sensor: 1. Loosen and remove the three base thumb screws then lift the funnel upward. FIGURE 7-2. Thumbscrew on RainVUE 20 2. Remove the wing nuts and washers from the CM241 mounting bracket. FIGURE 7-3.
  • Page 19 3. Line up the RainVUE-series mounting holes over the CM241 mounting bolts and place the sensor on the bracket. FIGURE 7-4. Exploded view of RainVUE-series and CM241 bracket. Wing nuts and pole not shown. 4. Loosely secure the RainVUE-series to the CM241 using the washers and wing nuts. 5.
  • Page 20 8. Remove the piece of foam from under the tipping mechanism. This foam may be saved and used whenever the sensor is transported. 9. Tip the tipping assembly several times to ensure the tipping mechanism is moving freely. 10. Pull and remove the insulator tab used to prevent draining of the backup coin cell battery during shipping and storage.

  • Page 21: Wiring

    Power ground U and C terminals are automatically configured by the measurement instruction. If multiple SDI-12 sensors are connected to a data logger, Campbell Scientific recommends using separate terminals when possible. However, multiple SDI-12 sensors can connect to the same data logger control or U terminal.

  • Page 22: Sdi-12 Programming

    provided in the following sections. Downloadable example program is available at www.campbellsci.eu/downloads/rainvue-example-program. 7.4.1 SDI-12 programming SDI12Recorder() instruction is used to measure a RainVUE-series. This instruction sends a request to the sensor to make a measurement and then retrieves the measurement from the sensor.
  • Page 23 data can be collected. After receiving the service request or waiting the indicated time, the data logger will send the D! command to collect the data. The C! command follows the same pattern as an M! command with the exception that it does not require the data logger to pause its operation until the values are ready.

  • Page 24: Sdi-12 Extended Commands

    Enter the following SDI-12 extended commands using the transparent mode while the computer is communicating with the data logger through a terminal emulator program. It is accessed through Campbell Scientific data logger support software or other terminal emulator programs. Data logger keyboards and displays cannot be used. Refer to SDI-12 transparent mode (p.
  • Page 25 Table 8-2: SDI-12 extended commands SDI-12 Values returned or function Comments command Typically this command is issued on the start of the Resets the total adjusted rain aXWARA! water year, which is accumulator to 0.00. normally October 1 or January 1. Resets the total adjusted rain to a current value and returns the number aXWA+xx.xx!

  • Page 26: Sdi-12 Version 1.4 Identify Measurement Commands And Responses

    Table 8-2: SDI-12 extended commands SDI-12 Values returned or function Comments command Returns two lines of header information, then returns updated Command is only intended aXTEST! data at every tip and every 2 seconds for testing and debugging or until a break is detected with each the sensor.
  • Page 27 Table 8-3: Identify commands for the RainVUE-series Type of command Command Sensor response Comment ttt: response time Identify (seconds) atttn measurement for the aIV! V command n: # of values returned AdjRain: adjusted or Identify intensity-corrected aAdjRain,Inches measurement for precipitation since last aIM_001! or aAdjRain,mm parameter 1 of...

  • Page 28: Rainfall Intensity Correction

    8.4 Rainfall intensity correction During intense rainfall, extra water can accumulate in the bucket before the tipping mechanism tips. The following graph shows the relationship between bucket volume and rainfall rate. The RainVUE-series includes a microprocessor that corrects for the intensity sensitivity of the bucket mechanism.
  • Page 29 1. Loosen and remove the three base thumb screws then lift the funnel upward. 2. Use a Philips screwdriver to remove the four screws on the RainVUE-series interface. 3. Remove the interface cover to access the USB port. 4. Open Device Configuration Utility. 5.
  • Page 30 6. If this is the first time connecting the RainVUE-series to the computer, click install USB driver for the RainVUE before connecting the cable to the computer. 7. Use the supplied USB cable to connect the RainVUE-series USB port to a computer USB port.

  • Page 31: Maintenance And Troubleshooting

    9.1 Maintenance 9.2 Troubleshooting 9.1 Maintenance To ensure reliable and accurate measurements, Campbell Scientific recommends doing the following every month. 1. Check the integrity of the cable and data logger connections. Replace cable if damaged. 2. Inspect the funnel for any damage or blockage. To clear a blockage, remove the funnel from the base and remove debris.

  • Page 32: Internal Lithium Battery

    (p. 16)). Replace the battery when voltage is approximately 2.7 VDC. Campbell Scientific recommends replacing the battery every 2 to 3 years and after each loss of power event. High temperature can reduce the battery life and low temperatures can decrease battery capacity lowering available power and sensor runtime.

  • Page 33: Updating Operating System

    4. Replace the old lithium battery with the new battery (3 V Coin Cell CR2032). 5. Place the interface cover on the interface and secure with the four screws. 6. Replace the funnel and tighten the three base thumb screws to secure the funnel to the base.

  • Page 34: Troubleshooting

    7. Click OK. 9.2 Troubleshooting Symptom: On a CRBasic data logger, data values report NAN, or on a non-Campbell Scientific data logger, data values do not change when the tipping mechanism is activated and new measurement commands are issued. Solution: 1.
  • Page 35 Symptom: Reported data values are lower than expected. Solution: 1. Ensure that the filter is clean and allows water to flow through it. 2. Check that the tipping mechanism can move freely. 3. Use a voltmeter on the switch to verify the switch is activated as expected while transitioning from one side to the other.

  • Page 37: Appendix A. Importing Short Cut Code Into Crbasic Editor

    Appendix A. Importing Short Cut code into CRBasic Editor Short Cut creates a .DEF file that contains wiring information and a program file that can be imported into the CRBasic Editor. By default, these files reside in the C:\campbellsci\SCWin folder. Import Short Cut program file and wiring information into CRBasic Editor: 1.

  • Page 39: Appendix B. Xtest! Operation

    Appendix B. XTEST! operation Use the XTEST! SDI-12 command to validate the calibration. Enter this command in the transparent mode while the computer is communicating with the data logger through a terminal emulator program. This command displays simulated rain fall data that does not affect rain accumulators used for the normal operation.
  • Page 40 Corrected Total Rain Fall Rain Fall Balance 0.000 0.000 0.000 0.000 0.010 0.010 0.011 0.021 0.011 0.032 0.012 0.044 0.010 0.054 0.011 0.065 0.023 0.088 0.011 1.180 0.011 1.191 0.011 1.202 0.012 1.214 0.010 1.224 0.000 1.224 0.000 1.224 The corrected rain fall and total rain fall values include intensity correction. When the simulated rain is ran through the gauge at a fast rate, the number of tips may be lower than expected, but the corrected rain fall should be close to the actual amount of simulated rain.

  • Page 41: Appendix C. Sdi-12 Sensor Support

    SDI-12, Serial Data Interface at 1200 baud, is a protocol developed to simplify sensor and data logger compatibility. Only three wires are necessary — serial data, ground, and 12 V. With unique addresses, multiple SDI-12 sensors can connect to a single SDI-12 terminal on a Campbell Scientific data logger.

  • Page 42: Acknowledge Active Command (A!)

    Table C-1: Campbell Scientific sensor SDI-12 command and response set Response Name Command aAb! Change Address b<CR><LF> Start Measurement atttn<CR><LF> aM1!...aM9! aMC! Start Measurement atttn <CR><LF> aMC1!...aMC9! and Request CRC Start Concurrent Measurement atttnn<CR><LF> aC1!...aC9! aCC! Start Concurrent Measurement atttnn<CR><LF> aCC1!...aCC9! and Request CRC a<values><CR><LF>...

  • Page 43: Start Verification Command (Av!)

    mmmmmm 6 characters specifying the sensor model 3 characters specifying the sensor version (operating system) Up to 13 optional characters used for a serial number or other specific xxx…xx sensor information that is not relevant for operation of the data logger Terminates the response <CR><LF>...

  • Page 44: Start Measurement Commands (Am!)

    C.1.6 Start measurement commands (aM!) A measurement is initiated with the M! command. The response to each command has the form atttn<CR><LF>, where a = sensor address ttt = time, in seconds, until measurement data is available. When the data is ready, the sensor notifies the data logger, and the data logger begins issuing D commands.
  • Page 45 nn = the number of values to be returned when one or more subsequent D commands are issued. See the following example. A data logger has three sensors wired into terminal C1. The sensors are addresses X, Y, and Z. The data logger will issue the following commands and receive the following responses: Table C-3: Example aC! sequence The data logger makes a request to sensor X to start...

  • Page 46: Start Measurement Commands With Cyclic Redundancy Check (Amc! And Acc!)

    Table C-3: Example aC! sequence Ten seconds later, after a total of 40 seconds have passed, the data logger starts the process of YD0! collecting data from sensor Y by issuing the first D command. The sensor immediately responds with the sensor Y+1+2+3+4+5+6<CR><LF>...

  • Page 47: Continuous Measurement Command (Ar0

    characters of data in response to a D command that follows an M! or MC! command. A sensor may return up to 75 characters of data in response to a D command that follows a C! or CC! command. Data values are separated by plus or minus signs. Command: aD0! (aD1! …...

  • Page 48: Changing An Sdi-12 Address

    Transparent mode is entered while the computer is communicating with the data logger through a terminal emulator program. It is accessed through Campbell Scientific data logger support software or other terminal emulator programs. Data logger keyboards and displays cannot be used.
  • Page 49 7. Type SDI12 and press Enter. 8. At the Select SDI12 Port prompt, type the number corresponding to the control port where the sensor is connected and press Enter. The response Entering SDI12 Terminal indicates that the sensor is ready to accept SDI-12 commands. 9.

  • Page 50: Changing An Sdi-12 Address - Cr200(X) Series

    NOTE: The transparent mode for the CR6, CR3000, CR800-series, CR300-series, and CR1000 data loggers is similar to that shown for the CR1000X. C.2.2 Changing an SDI-12 address — CR200(X) Series 1. Connect a single SDI-12 sensor to the CR200(X). 2. In LoggerNet Connect, under data logger, click Terminal Emulator. The terminal emulator window opens.

  • Page 51: References

    FIGURE C-1. CR200(X) example of using the SDI-12 transparent mode to change the SDI- 12 address from 0 to 1 C.3 References SDI-12 Support Group. SDI-12: A Serial-Digital Interface Standard for Microprocessor-Based Sensors – Version 1.4. River Heights, UT: SDI-12 Support Group, 2017. http://www.sdi- 12.org/current_specification/SDI-12_version-1_4-Dec-1-2017.pdf.
  • Page 52 Campbell Scientific regional offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...

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