Campbell CRS451 User Manual
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Campbell CRS451 User Manual

Submersible water-level recording sensor
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Download this manual See also: Instruction Manual
CRS451/CRS456
Submersible Water-Level
Recording Sensor
Issued: 3.3.14
Copyright © 2013-2014 Campbell Scientific, Inc.
Printed under licence by Campbell Scientific Ltd.
CSL 996

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  • Page 1 CRS451/CRS456 Submersible Water-Level Recording Sensor Issued: 3.3.14 Copyright © 2013-2014 Campbell Scientific, Inc. Printed under licence by Campbell Scientific Ltd. CSL 996...
  • 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 READ FIRST 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...

  • Page 7: Table Of Contents

    Dislodge Bubbles ................... 5 Well Installation ..................5 Other Installations .................. 5 Battery Voltage Reading ................ 5 Attaching Suspension Cable to CRS451/CRS456 ........6 Programming ............. 7 Settings ....................7 Connect to the CRS451/CR456 .............. 8 Configure CRS45X for Measurements ........... 8 Compensating Measurements for Barometric Pressure ......
  • Page 8 Appendices Appendix A. Calibration Certificate ..............A-1 Appendix B. Conversion to Units of Measurement ..........B-1 Table B-1. Conversion Factors ................B-1...

  • Page 9: Introduction

    The CRS451 has a 316L stainless-steel case that can be submerged in most canals, wells, ponds, lakes, and streams. The CRS456 has a rugged titanium case that allows it to be used in saltwater or other harsh environments.

  • Page 10: Ships With

    A number of additional advanced measurement techniques are employed to harness the best possible performance available from today’s state of the art pressure sensor technology. The CRS451/CRS456 reverts to a low power sleep state between measurements. A series of measurements are performed yielding a temperature and pressure value.
  • Page 11 0.1% full-scale range TEB Temperature: ±0.2°C 0.0035% full-scale range Resolution: 2x pressure range Overpressure: –30° to 80°C Dry Storage Temperature: Operating Temperature: 0° to 60°C Freezing conditions may damage the CRS451/CRS456 (see CAUTION Section 6.2, Avoiding Freezing Conditions, more information). Body Material CRS451:...

  • Page 12: Installation

    The CRS451 is a sealed gauge sensor and when not submerged will read approximately 1 bar at sea level and less as elevation increases. The CRS451 is calibrated at 9 pressures starting at 0.6 bar up to full scale referenced to 1 bar.

  • Page 13: Dislodge Bubbles

    Battery Voltage Reading The voltage of the lithium ion battery used in the CRS451/CRS456 will abruptly decrease at the end of the battery’s useful life, which makes predicting remaining battery life difficult by measuring battery voltage alone.

  • Page 14: Attaching Suspension Cable To Crs451/Crs456

    CRS451/CRS456 Submersible Water-Level Recording Sensor Attaching Suspension Cable to CRS451/CRS456 Attach the split ring to the CRS451 cap.

  • Page 15: Programming

    Settings Before connecting to the CRS451/CR456, you can change the sensor name or the appearance of HydroSci screens by clicking on Settings at the upper right portion of the HydroSci screen.

  • Page 16: Connect To The Crs451/Cr456

    CRS451/CRS456 Submersible Water-Level Recording Sensor Connect to the CRS451/CR456 Select CRS45X from the left margin. Select appropriate COM Port. Click Connect button. Configure CRS45X for Measurements Click Configuration. Select Create New Configuration button located at lower left of screen.
  • Page 17 User Manual Select the type of measurements you want to make. a) Barometer Pressure Reference should be selected if you want to use CR45X sensor as a barometer to compensate for changes in barometric pressure. b) Disable: To preserve battery between deployments always configure the sensor for storage after use.
  • Page 18 CRS451/CRS456 Submersible Water-Level Recording Sensor Select a Start and Stop Time. a) Select a time in the future when measurements should begin. Selecting a time in the past will force the sensor to begin making measurements immediately at the indicated frequency. If an offset calculation was selected in the previous screen, the sensor will not make correct measurements.
  • Page 19 User Manual b) If desired, select time in future when measurements should cease. c) Select the rate at which measurements will be made. This does not configure the senor for data storage, only the rate at which measurements are made.
  • Page 20 CRS451/CRS456 Submersible Water-Level Recording Sensor Select and Name Data Tables for Datalogging. a) Up to four different Data Tables can archive data at independent intervals with any combination of elements (samples, averages, maximum, etc). b) Contents of the Data Table are selected in the next screen.
  • Page 21 User Manual Select which data, in which format and unit of measurement, is to be included in each of the data tables selected in the previous screen. Once the Data Tables have been configured, the configuration process is finished and the Finish button can be selected.

  • Page 22: Compensating Measurements For Barometric Pressure

    CRS451/CRS456 Submersible Water-Level Recording Sensor Once the configuration is complete, it must be copied to the CRS451 before it will take effect. Click on Apply Configuration to CRS45X to start this process. Before sending the configuration file to the CRS45X, HydroSci may provide a warning that your start and stop times may need adjusting.

  • Page 23: 7.4.1 Using An Additional Crs45X

    Configure CRS45X for Measurements). 7.4.2 Using a Barometer The barometric pressure data from a nearby Campbell Scientific weather station or other Campbell Scientific monitoring platform also can be used to compensate for barometric pressure. The Data tab is used to process and merge the data file from the test sensor with the data file from the barometric reference sensor.
  • Page 24 CRS451/CRS456 Submersible Water-Level Recording Sensor Select a data file you wish to be corrected by barometric pressure values. a) The Field Application Used to Produce Collected Measurement Data information will be shown based on the collected data file selected. Press the browse button next to the Barometric Pressure Reference Data...
  • Page 25 Column in the data file. The reference column must be a measurement of pressure or level. If from a nearby Campbell Scientific weather station, note that the reference column must have units associated with it. The units can be any pressure or level units as defined in HydroSci and they must match exactly the HydroSci abbreviation as shown here.
  • Page 26 CRS451/CRS456 Submersible Water-Level Recording Sensor Once the corrected data file has been built, press the View Corrected Data File button to open the file in View. The View Data button at the bottom of the screen can also be used to open View.

  • Page 27: Maintenance

    Maintenance Campbell Scientific recommends that the CRS451/CRS456 be factory recalibrated every 24 months. Before a CRS451/CRS456 is sent to Campbell Scientific, the customer must get an RMA (returned material authorization) number and fill out the Declaration of Hazardous Material and Decontamination form.

  • Page 28: Every Two To Three Years Or On A Rotating Schedule

    Every Two to Three Years or on a Rotating Schedule  Send the CRS451/CRS456 in for inspection and calibration. Battery Replacement Remove the set screws on the cap end of the CRS451. New Battery Screwdriver Gently pull the end out of the housing.
  • Page 29 User Manual Unplug the connecter.
  • Page 30 CRS451/CRS456 Submersible Water-Level Recording Sensor Gently pull the battery out the end. Disconnect the battery. Remove the battery. Slide in the new battery. Plug in the new battery.
  • Page 31 User Manual Slide the battery into the housing. Reconnect the cable.
  • Page 32 CRS451/CRS456 Submersible Water-Level Recording Sensor Gently slide the end piece with its O-rings into the housing. NOTE Nicking the O-ring could result in a leak. Line up the holes and insert the set screw. Do not over tighten the set screw.

  • Page 33: Troubleshooting

    User Manual Troubleshooting The most common causes for erroneous pressure transducer data include:  Low battery  Damaged CRS451/CRS456 Water damage Damage to diaphragm due to excessive pressure  Atmospheric pressure not subtracted from pressure reading Problem: Unit will not respond when attempting USB communications.
  • Page 34 CRS451/CRS456 Submersible Water-Level Recording Sensor...

  • Page 35: Appendix A. Calibration Certificate

    This value is listed as a percentage of the full scale range of the sensor. When a CRS451/CRS456 is returned to Campbell Scientific for calibration, the sensor will be returned with an Instrument Data Report. This report will include values in the Pressure Before [kPa] column.
  • Page 36 Appendix A. Calibration Certificate...

  • Page 37: Appendix B. Conversion To Units Of Measurement

    Appendix B. Conversion to Units of Measurement Table B-1. Conversion Factors Unit of Measurement Factor of Conversion Feet 2.3066587369 Inches 27.679904843 Metres 0.1019716213 Millimetres 101.9716213...
  • Page 38 Appendix B. Conversion to Units of Measurement...
  • Page 40 CAMPBELL SCIENTIFIC COMPANIES Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES • www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA • www.csafrica.co.za sales@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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