Campbell CRS451 Instruction Manual
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Campbell CRS451 Instruction Manual

Submersible water-level recording sensor
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CRS451/CRS456 Submersible
Water-Level Recording Sensor
Revision: 1/14
C o p y r i g h t
©
2 0 1 3 - 2 0 1 4
C a m p b e l l
S c i e n t i f i c ,
I n c .

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  • Page 1 CRS451/CRS456 Submersible Water-Level Recording Sensor Revision: 1/14 C o p y r i g h t © 2 0 1 3 - 2 0 1 4 C a m p b e l l S c i e n t i f i c ,...
  • Page 3 Campbell pricelist or product manual. Products not manufactured, but that are re-sold by Campbell, are warranted only to the limits extended by the original manufacturer. Batteries, fine-wire thermocouples, desiccant, and other consumables have no warranty.
  • Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an application engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. Campbell Scientific’s shipping address is: CAMPBELL SCIENTIFIC, INC.

  • Page 5: Table Of Contents

    Dislodge Bubbles ................. 5 Well Installation ................... 5 Other Installations ................6 Battery Voltage Reading ..............6 Attaching Suspension Cable to CRS451/CRS456 ....... 6 7. Programming .............. 8 Settings ....................8 Connect to the CRS451/CR456 ............8 Configure CRS45X for Measurements ..........9 Compensating Measurements for Barometric Pressure ......
  • Page 6 Table of Contents Appendices A. Calibration Certificate ..........A-1 B. Conversion to Units of Measurement ....B-1 Table B-1. Conversion Factors ................B-1...

  • Page 7: Introduction

    HydroSci software is included and supports test set up, data retrieval, and data display. 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 8: 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 9 CRS451/CRS456 Submersible Water-Level Recording Sensor Fast scan rate • Large data storage capacity • • High accuracy Long battery life • • Data retrieval through sealed USB connector Measurement Time: < 1 s typical Output: micro USB Internal Data Collection Memory:...

  • Page 10: Installation

    Weight: 230 g (0.51 lb) The CRS451 is a sealed gage 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 11: Avoiding Freezing Conditions

    With long drops, it may be necessary to use the weighted nose cone (option –WN). For surface installations the instrument’s body can be strapped with tie wraps or tape. Campbell Scientific offers cable ties (pn 7421) to secure the cable. If installing in a well, fasten the cable to the well head.

  • Page 12: Other Installations

    CRS451/CRS456 Submersible Water-Level Recording Sensor Other Installations The CRS451/CRS456 can be installed in any position; however, when it leaves the factory it is tested in the vertical position. There will be an offset error if not installed vertically; contact Campbell Scientific for more information.
  • Page 13 CRS451/CRS456 Submersible Water-Level Recording Sensor...

  • Page 14: 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 15: Configure Crs45X For Measurements

    CRS451/CRS456 Submersible Water-Level Recording Sensor Configure CRS45X for Measurements 1. Click Configuration. 2. Select Create New Configuration button located at lower left of screen. 3. 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.
  • Page 16 CRS451/CRS456 Submersible Water-Level Recording Sensor 4. Add offset to relate water level measurements to a known datum or reference point. (Aquifer test start at level 0.) a) This step is optional and not required. b) This offset takes effect at the Start Time—which is set in a subsequent screen—so it is necessary that this sensor be in its permanent...
  • Page 17 CRS451/CRS456 Submersible Water-Level Recording Sensor 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...
  • Page 18 CRS451/CRS456 Submersible Water-Level Recording Sensor 6. 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 19 CRS451/CRS456 Submersible Water-Level Recording Sensor 7. 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.
  • Page 20 8. Once the Data Tables have been configured, the configuration process is finished and the Finish button can be selected. 9. 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.

  • Page 21: Compensating Measurements For Barometric Pressure

    7.4.2 Using a Barometer The barometric pressure data from a nearby Campbell Scientific weather station or other Campbell Scientific monitoring platform can also 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 22 CRS451/CRS456 Submersible Water-Level Recording Sensor 2. 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.
  • Page 23 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 24 CRS451/CRS456 Submersible Water-Level Recording Sensor 5. Press the browse button next to the Corrected Data File field to indicate where the corrected data file should be stored. Rename the file as applicable. 6. After completing all of the fields, press the Build Corrected Data File button.
  • Page 25 CRS451/CRS456 Submersible Water-Level Recording Sensor In View, use the File | Open menu item to browse to any data file you would like to view. To select the data values to be graphed, click on the column heading(s) in the data file with a single mouse click. The selection will be highlighted and will automatically be added to the graph.

  • Page 26: 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 27: Battery Replacement

    CRS451/CRS456 Submersible Water-Level Recording Sensor Battery Replacement Remove the set screws on the cap end of the CRS451. New Battery Screwdriver...
  • Page 28 CRS451/CRS456 Submersible Water-Level Recording Sensor Gently pull the end out of the housing. Unplug the connecter.
  • Page 29 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 30 CRS451/CRS456 Submersible Water-Level Recording Sensor Slide the battery into the housing. Reconnect the cable.
  • Page 31 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 32: Troubleshooting

    CRS451/CRS456 Submersible Water-Level Recording Sensor 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 33: 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 34 Appendix A. Calibration Certificate...

  • Page 35: 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 Meters 0.1019716213 Millimeters 101.9716213...
  • Page 36 Appendix B. Conversion to Units of Measurement...
  • Page 38 Campbell Scientific Ltd. (CSL Germany) Fahrenheitstraße 13 28359 Bremen GERMANY www.campbellsci.de • info@campbellsci.de Campbell Scientific Spain, S. L. (CSL Spain) Avda. Pompeu Fabra 7-9, local 1 08024 Barcelona SPAIN www.campbellsci.es • info@campbellsci.es Please visit www.campbellsci.com to obtain contact information for your local US or international representative.

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Crs456

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