USER 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.
Guarantee This equipment is guaranteed against defects in materials and workmanship. This guarantee applies for twelve months from date of delivery. We will repair or replace products which prove to be defective during the guarantee period provided they are returned to us prepaid.
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 in2 (square inch) = 645 mm2 Length: 1 in. (inch) = 25.4 mm 1 ft (foot) = 304.8 mm 1 yard = 0.914 m 1 mile = 1.609 km Mass: 1 oz. (ounce) = 28.35 g 1 lb (pound weight) = 0.454 kg Pressure: 1 psi (lb/in2) = 68.95 mb Volume: 1 UK pint = 568.
Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction ....................................................... 1 2. Cautionary Statements ..................................... 1 3. Initial Inspection and Handling Guidelines ..... 1 3.1 Ships With .............................................................................................. 2 4. Overview .................................
Appendices Appendix A. Calibration Certificate ................................................................... A-1 Appendix B. Conversion to Units of Measurement ............................................ B-1 Table B-1. Conversion Factors ..........................................................................
CRS451/CRS456 Submersible Water-Level Recording Sensor 1. Introduction The CRS451 consists of a water-level and water-temperature sensor that has its own time clock and memory to store the collected data, in a compact stainlesssteel case. This frees users to place the sensor in remote sites and let it collect data for long periods of time.
CRS451/CRS456 Submersible Water-Level Recording Sensor 3.1 4. Ships With #27555 USB 2.0 Cable Type A Male to Micro B Male, 6ft #29225 HydroSci Software on CD Overview The CRS451/CRS456, Submersible Water-Level Recording Sensor, provides reliable, accurate pressure/level measurements that are fully temperature compensated. The 24 bit A/D has simultaneous 50/60 Hz rejection and automatic calibration for each measurement.
User Manual Data retrieval through sealed USB connector Measurement Time: < 1 s typical Output: micro USB Internal Data Collection Memory: 4 MB HydroSci Supported Operating Systems: Windows XP, Windows Vista, or Windows 7 Logging/Scanning Modes: Standard, Delta, Logarithmic Power Requirements: Internal user-replaceable lithium battery Battery Life: 5+ years when logging interval is once per hour Power Consumption Quiescent Current: < 80 μA Measurement/ Communication Current: 4 mA for 1 s m
CRS451/CRS456 Submersible Water-Level Recording Sensor Weighted and NPT Material: Stainless Steel Dimensions Length: Diameter: 22.23 cm (8.75 in) 2.22 cm (0.875 in) Weight: 230 g (0.51 lb) 1 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.
User Manual the water body is at risk of freezing solid, placing the sensor in a stilling well that extends below the frost line will protect the sensor from freezing water. 6.3 Dislodge Bubbles While submersing the CSR451/CRS456, air bubbles may become trapped inside the nose cone, causing small, offset errors until the bubbles dissolve. Dislodge these bubbles by gently shaking the CRS451/CRS456 while under water. 6.
CRS451/CRS456 Submersible Water-Level Recording Sensor 6.7 Attaching Suspension Cable to CRS451/CRS456 Attach the split ring to the CRS451 cap.
User Manual 7. Programming Communicating with the CRS451/CRS456 requires a micro USB cable and HydroSci software running on a computer with Windows XP or later. The CRS451/CRS456 is configured using the HydroSci software provided with the unit. A DVD containing HydroSci is shipped with the CRS451/CRS456. CAUTION 7.1 If you are using an XP computer, please have the driver disc in the CD/DVD drive before plugging in the USB cord.
CRS451/CRS456 Submersible Water-Level Recording Sensor 7.2 7.3 8 Connect to the CRS451/CR456 1. Select CRS45X from the left margin. 2. Select appropriate COM Port. 3. Click Connect button. Configure CRS45X for Measurements 1. Click Configuration. 2. Select Create New Configuration button located at lower left of screen.
User Manual 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. b) Disable: To preserve battery between deployments always configure the sensor for storage after use. 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.
CRS451/CRS456 Submersible Water-Level Recording Sensor 5. Select a Start and Stop Time. a) 10 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.
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.
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.
User Manual 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. 8. Once the Data Tables have been configured, the configuration process is finished and the Finish button can be selected.
CRS451/CRS456 Submersible Water-Level Recording Sensor 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. Before sending the configuration file to the CRS45X, HydroSci may provide a warning that your start and stop times may need adjusting. If the Start Time is in the past, the CRS45X will immediately begin logging data but any offset you may have applied will not be effective.
User Manual 7.4.1 Using an Additional CRS45X One simple way to complete this correction is to deploy an additional CRS45X as a reference sensor. For this method, in the Select Field Application window, choose Barometer Pressure Reference (see Section Error! Reference source not found., Configure CRS45X for Measurements). 7.4.
CRS451/CRS456 Submersible Water-Level Recording Sensor 2. Select a data file you wish to be corrected by barometric pressure values. a) 3. 16 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 File field to browse the data files from the barometric reference sensor.
User Manual 4. Select a data file you wish to use as the barometric pressure reference data file. a) Use the drop-down list to select the Barometric Pressure Reference 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.
CRS451/CRS456 Submersible Water-Level Recording Sensor 7. 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. 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.
User Manual An example of the measured data and the barometric pressure compensated data is shown here. The original data are shown in blue and the compensated data are shown in red. The barometric pressure sensor data are shown below, also in blue. 8. Maintenance Campbell Scientific recommends that the CRS451/CRS456 be factory recalibrated every 24 months.
CRS451/CRS456 Submersible Water-Level Recording Sensor 8.2 Check battery condition by using a laptop and HydroSci software to view the battery voltage (see Section 6.6, Battery Voltage Reading). The battery replacement procedure is provided in Section 8.3, Battery Replacement. Check all readings; adjust offsets if necessary. Check recent data. Every Two to Three Years or on a Rotating Schedule 8.3 Send the CRS451/CRS456 in for inspection and calibration.
User Manual Unplug the connecter.
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.
User Manual Slide the battery into the housing. Reconnect the cable.
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.
User Manual 9. 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. Suggestion: Replace battery. Correct COM Port used for communication not selected in HydroSci.
CRS451/CRS456 Submersible Water-Level Recording Sensor 26
Appendix A. Calibration Certificate Each CRS451/CRS456 has been calibrated to meet printed accuracy specification at multiple temperature and pressure ranges. If additional verification is required, a Calibration Certificate can be purchased for each CRS451/CRS456 Water-Level Recording Sensor. The Instrument Data Report provides a list of the pressure and temperature at which the sensor was tested. Pressure [kPa] is the pressure applied (listed in kilopascals) to the sensor.
Appendix A.
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.
Appendix B.
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