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Campbell CS451 Instruction Manual

Submersible pressure transducer
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CS451/CS456 Submersible
Pressure Transducer
Revision: 1/13
C o p y r i g h t
©
2 0 0 9 - 2 0 1 3
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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Summary of Contents for Campbell CS451

  • Page 1 CS451/CS456 Submersible Pressure Transducer Revision: 1/13 C o p y r i g h t © 2 0 0 9 - 2 0 1 3 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 applications 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

    Table of 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 ............1 4. Quickstart ..............2 Step 1 —...
  • Page 6 Every Two to Three Years or on a Rotating Schedule ...... 24 9. Troubleshooting............24 Appendix A. Calibration Certificate..........A-1 Figures 5-1. CS451 nose cone options..............7 7-1. A200 Sensor-to-PC Interface............. 11 7-2. Connect screen .................. 12 7-3. Terminal Emulator ................13 7-4.

  • Page 7: Introduction

    Sensor will be damaged if it is encased in frozen liquid. • Although the CS451/CS456 is rugged, it is also a highly precise scientific instrument and should be handled as such. There are no user-serviceable parts and any attempt to disassemble the device will void the warranty.

  • Page 8: Quickstart

    The desiccant tube must always be attached to the CS451/CS456. Step 2 — Choose Appropriate Depth The CS451/CS456 must be installed below the water at a fixed depth. This depth should be chosen so the water pressure will never exceed the transducer’s pressure range (twice its pressure range).

  • Page 9: Step 3 - Dislodge Bubbles

    With long drops it may be necessary to use the weighted nose cone (option -WN). The transducer body can be strapped with tie wraps or tape. Campbell Scientific offers cable ties (pn 7421) that can be used to secure and strain relief the cable.

  • Page 10: Step 6 - Use Scwin To Program Datalogger And Generate Wiring Diagram

    Step 6 — Use SCWin to Program Datalogger and Generate Wiring Diagram The simplest method for programming the datalogger to measure a CS451/CS456 is to use SCWin. 1. Open Short Cut and click on New Program then select Next. 2. Select a datalogger and scan interval then select Next.
  • Page 11 CS451/CS456 Submersible Pressure Transducer 3. Select CS451/CS456 Pressure Sensor, click the right arrow to add it to the list of sensors to be measured, then select Next. 4. Select Offset Calculation then select lvl_ft for the Linked Level and enter the initial water level in the Observed Level Reading box.

  • Page 12: Overview

    1 second. The measurement cycle is activated by commands via SDI-12 or RS-232 terminal commands. The design uses a piezoresistive sensor housed in a 316L stainless-steel (CS451) or titanium (CS456) package to enhance reliability. The rugged construction makes the CS451/CS456 suitable for water level measurement in irrigation applications, water wells, lakes, streams and tanks.

  • Page 13: Cs451 Nose Cone Options

    CS451/CS456 is shipped with an address of 0. Two values are output by the CS451/CS456—pressure/level and temperature. The CS451/CS456 is shipped from the factory to output pressure in psig and temperature in degrees Celsius. The CS451/CS456 has three nose cone options. FIGURE 5-1 shows the nose cone options.

  • Page 14: Specifications

    CS451/CS456 Submersible Pressure Transducer Specifications Features: • Output acceptable for recording devices with SDI-12 or RS-232 capability including Campbell Scientific dataloggers • Quality construction that ensures product reliability • Rugged stainless steel or titanium case that protects piezoresistive sensor •...
  • Page 15 60 m (200 ft) RS-232: 60 m (200 ft) Cable Type: 5 Conductor, 26 AWG Hytrel Jacket Body Material: CS451 – 316L Stainless Steel CS456 – Titanium Element Material: CS451 – 316L Stainless Steel CS456 – Hastelloy Top Cone Material: Delrin Dimensions: Length 213.36 mm (6.875 in)

  • Page 16: Operation

    SDI-12 commands or by using Campbell Scientific’s software Device Configuration Utility. 7.1.1 PC Connection Using the A200 The A200 or another device is required to connect the CS451/CS456 to a PC. This allows sensor settings to be changed via our Device Configuration Utility. 7.1.1.1 Driver Installation...

  • Page 17: Powering The Sensor

    CS451/CS456 Submersible Pressure Transducer 7.1.1.3 Powering the Sensor The A200 provides power to the sensor when it is connected to a PC’s USB port. An internal DC/DC converter boosts the 5 Vdc supply from the USB connection to a 12 Vdc output is required to power the sensor.

  • Page 18: Device Configuration Utility (Version 2.03 Or Higher)

    Device Configuration Utility and connecting the transducer to the PC, select CS451 from the Device Type list on the left column of the screen. In the PC Serial Port box, select the COM port that was assigned to the A200 (see Section 7.1.1.4, Determining which COM Port the A200 has been...

  • Page 19: Terminal Emulator

    Transparent mode is entered while the PC is in telecommunications with the datalogger through a terminal emulator program. It is most easily accessed through Campbell Scientific datalogger support software, but is also accessible with terminal emulator program. To enter the SDI-12 transparent mode, enter Terminal Emulator from LoggerNet, PC400 or PC200W datalogger support software.

  • Page 20: Rs-232 Connection Via Pc Terminal Software

    PC terminal software can be used to communicate with the CS451/CS456 via the RS-232 communication mode (see FIGURE 7-4). The CS451/CS456 is connected to the PC via the A200 (see Section 7.1.1, PC Connection Using the A200). Upon setup, the terminal emulator software will request you enter the Communication connection;...

  • Page 21: Sdi-12 Commands

    Help menu 7.1.5 SDI-12 Commands The CS451/CS456 uses an SDI-12 compatible hardware interface and supports a subset of the SDI-12 commands. The most commonly used command is the aM! command, issued by the datalogger, where a represents the sensor address.

  • Page 22: Sdi-12 Addresses

    Possible addresses are 0 to 9, A to Z, and a to z. The CS451/CS456 is shipped from the factory with the address set to 0. The address on the CS451/CS456 can be changed by sending an SDI-12 change address command ‘aAb!’, where a is the original address and b is the new...

  • Page 23: Extended Sdi-12 Commands

    If additional control ports are not available, then the address will need to be changed. 7.1.5.2 Extended SDI-12 Commands Extended SDI-12 commands can be used to configure the CS451/CS456 data output and sample number. These commands are used to select the temperature units (Celsius or Fahrenheit), pressure/level units (psig, kPa, bar, feet, meter, inches, or millimeter), and the integration time for each measurement.

  • Page 24: Installation Considerations

    CS456 should be used in harsh water applications, including salt water. 7.2.1 Non-Vertical Installations The CS451/CS456 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;...

  • Page 25: Split Mesh Cable Grip (Pn 25431)

    FIGURE 7-5 shows a transducer’s cable suspended using the split mesh cable grip. FIGURE 7-5. Transducer suspended with split mesh cable grip Wiring NOTE Power down your system before wiring the CS451/CS456. The shield wire plays an important role in noise emissions and susceptibility as well as transient protection.

  • Page 26: Sdi-12

    SCWin is the preferred method for programming the datalogger. SCWin generates a wiring diagram that shows how to connect the CS451/CS456 to your Campbell Scientific datalogger. This section is for users who are using CRBasic or Edlog to program their datalogger.

  • Page 27: Crbasic Programming

    Dataloggers that use CRBasic include our CR200(X)-series, CR800, CR850, CR1000, CR3000, and CR5000. These dataloggers use the SDI12Recorder() to read the CS451/CS456. A multiplier of 1.0 and an offset of 0.0 yield water level in psig and temperature in degrees C.

  • Page 28: Example Program For Cr1000 Datalogger

    Our CR500, CR510, CR10(X), and CR23X dataloggers are programmed with Edlog. These dataloggers use Instruction 105 to read the CS451/CS456. Your datalogger manual has a detailed explanation of Instruction 105. Please note that Edlog only allocates one input location for Instruction 105.

  • Page 29: Example Program For Cr10(X) Dataloggers

    CS451/CS456 Submersible Pressure Transducer 7.4.2.1 Example Program for CR10(X) Dataloggers Below is a portion of a CR10X program that measures the CS451/CS456. The instructions below do not store data in final storage. NOTE Instruction 92, Instruction 77 and processing instructions such as Instruction 70 are required to store the data permanently.

  • Page 30: Every Visit

    Check all sensor readings: adjust transducer offsets if necessary • Check recent data Every Two to Three Years or on a Rotating Schedule • Send the CS451/CS456 in for inspection. Troubleshooting The most common causes for erroneous pressure transducer data include: • poor sensor connections to the datalogger •...
  • Page 31 CS451/CS456 Submersible Pressure Transducer Suggestion: A kinked or plugged vent tube will not effectively vent a gauge pressure (Vented) type of device. Normal changes in barometric pressure will appear as water level fluctuations and these types of errors are typically on the order of 1 foot of water level.
  • Page 32 CS451/CS456 Submersible Pressure Transducer...

  • Page 33: Calibration Certificate

    This value is listed as a percentage of the Full Scale range of the sensor. When a CS451/CS456 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 36 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 • cleroux@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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