Campbell CS451 Instruction Manual
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Campbell CS451 Instruction Manual

Submersible pressure transducer
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CS451/CS456 Submersible
Pressure Transducer
Revision: 5/18
C o p y r i g h t
©
2 0 0 9 - 2 0 1 8
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: 5/18 C o p y r i g h t © 2 0 0 9 - 2 0 1 8 C a m p b e l l S c i e n t i f i c ,...
  • Page 4 (780) 454-2655. Campbell Scientific (Canada) Corp. is unable to process any returns until we receive this form. If the form is not received within three days of product receipt or is incomplete, the product will be returned to the client at the client’s expense.
  • Page 5 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 CLIENT ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.
  • Page 6 PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. (CSI) primarily for the US market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in...

  • Page 8: 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. Precautions ..............1 3. Initial Inspection ............1 4.
  • Page 9 D.3.2 Changing an SDI-12 Address – CR200(X) Series ....D-7 References ..................D-8 E. RS-232 Connection Via Computer Terminal Software ..............E-1 Figures 5-1. CS451 nose cone options ..............5 7-1. Transducer suspended with split mesh cable grip ....... 9 7-2. Heyco Cable Grip ................10 7-3.
  • Page 10 Table of Contents D-1. Campbell Scientific Sensor SDI-12 Command and Response Set .. D-1 D-2. Example aM! Sequence ..............D-3 D-3. Example aC! Sequence ..............D-4 E-1. RS-232 Settings ................E-1 E-2. RS-232 Terminal Commands ............E-2 CRBasic Examples B-1.

  • Page 12: 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 13: Quickstart

    Open Short Cut and click Create New Program. Double-click the datalogger model. In the Available Sensors and Devices box, type CS451 (1). You can also locate the sensor in the Sensors | Water | Level & Flow folder. Double- click CS450/CS451/CS455/CS456 Pressure Transducer (2). Water level defaults to feet and temperature defaults to degrees Celsius.
  • Page 14 CS451/CS456 Submersible Pressure Transducer In the Available Sensors and Devices box, type Offset (1) and double- click the Offset Calculation (2) under the Sensors | Water | Level & Flow folder. For the Linked Level parameter (3), select the variable that stores the level measurement (typically Lvl_ft or Lvl_m).

  • Page 15: Overview

    LoggerNet, PC400, RTDAQ, or PC200W to make sure it is making reasonable measurements. Overview The CS451/CS456 pressure transducer provides a reliable, accurate pressure/level measurement that is fully temperature compensated. Its 24-bit A/D has simultaneous 50/60 Hz rejection and automatic calibration for each measurement.

  • Page 16: Cs451 Nose Cone Options

    The CS451/CS456 has two communication options: SDI-12 and RS-232. The CS451/CS456 is shipped from the factory with both communications options enabled. As an SDI-12 sensor, the CS451/CS456 is shipped with an address of 0. Two values are output by the CS451/CS456—pressure/level and temperature.

  • Page 17: Specifications

    • Weighted nose cone offered adds 0.2 kg (7.4 oz) to the transducer weight. Additional weight makes submersion of the transducer easier Compatible with Campbell Scientific CRBasic dataloggers: • CR1000X, CR300 series, CR6, CR200(X) series, CR800 series, CR1000, CR3000, and CR5000...

  • Page 18: Installation

    ISA S51.1. 0.05% full scale range accuracy not available in the 0 to 2.9 psig range. Campbell Scientific recommends using separate terminals when possible. Installation If using Short Cut to program the datalogger, skip Section 7.3, Wiring (p.

  • Page 19: Installation Considerations

    The desiccant tube must always be attached to the CS451/CS456. 7.1.2 Appropriate Water 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 overpressure range (twice the pressure range).

  • Page 20: Installation Procedure

    7.2.2 Secure the Transducer 7.2.2.1 Tie Wrap/Tape The transducer body can be strapped with cable ties or tape. Campbell Scientific offers cable ties that can be used to secure and strain relief the cable. If installing in a well, fasten the cable to the well head.

  • Page 21: Heyco Cable Grip

    CS451/CS456 Submersible Pressure Transducer 7.2.2.3 Heyco Cable Grip To protect your transducer during deployment, Campbell Scientific offers the Heyco cable grip (FIGURE 7-2) to clamp the transducer to the submerged end of a 1-inch PVC pipe (FIGURE 7-3). The PVC pipe will help protect the sensor and cable from debris and disturbances while also providing a more secure means of anchoring the sensor to minimize movement.

  • Page 22: Offset Calculation

    For example, if the correct elevation of the water, as measured by a staff gage or other measurement device, is 20 feet, and the CS451 provides a reading of 5.76 psig, then: 5.76 psig • 2.31 ft/psig = 13.3056 ft.

  • Page 23: Rs-232 Connections

    (p. B-1) Programming basics and programming examples for Edlog dataloggers are provided at www.campbellsci.com\old-manuals. The SDI12Recorder() measurement instruction programs CRBasic dataloggers to measure the CS451/CS456 sensor. For most CRBasic dataloggers, the SDI12Recorder() instruction has the following syntax: SDI12Recorder(Destination, SDIPort, SDIAddress, “SDICommand”,...

  • Page 24: Operation

    SDI-12 Sensors | Transparent Mode.) 8.1.1 Computer Connection Using the A200 The A200 or another device is required to connect the CS451/CS456 to a computer. This allows sensor settings to be changed via DevConfig. 8.1.1.1 Driver Installation If the A200 has not been previously plugged into your computer and your computer operating system is not Windows 7, the A200 driver needs to be loaded onto the computer.

  • Page 25: Powering The Sensor

    CS451/CS456 Submersible Pressure Transducer FIGURE 8-1. A200 Sensor-to-Computer Interface TABLE 8-2. Wire Color, Function, and A200 Connection Wire Color Wire Function A200 Connection Power +12Vdc Black Ground White RS-232 Tx (Output) Blue RS-232 Rx (Output) Yellow Ground Clear Signal Ground 8.1.1.3 Powering the Sensor...

  • Page 26: Device Configuration Utility (Version 2.03 Or Higher)

    (p. 13) After installing DevConfig and connecting the transducer to the computer, select CS451 from the Device Type list on the left column of the screen. In the Communication Port box, select the COM port that was assigned to the A200 (see Section 8.1.1.4, Determining which COM Port the A200 has been...

  • Page 27: Sdi-12 Measurement Commands

    CS451/CS456 Submersible Pressure Transducer The CS451/CS456 supports the commands that are listed in TABLE 8-3. When using an M! command, the datalogger waits for the time specified by the sensor, sends the D! command, pauses its operation, and waits until either it receives the data from the sensor or the sensor timeout expires.

  • Page 28: Measuring Multiple Sdi-12 Sensors

    Campbell Scientific recommends that the CS451/CS456 be factory recalibrated and checked every 24 months. Before a CS451/CS456 sensor 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 29: Every Two Years

    CS451/CS456 Submersible Pressure Transducer Every Two Years Send the CS451/CS456 to the factory for recalibration and inspection. • 10. Troubleshooting The most common causes for erroneous pressure transducer data include: • poor sensor connections to the datalogger damaged cables •...

  • Page 30: Importing Short Cut Code Into Crbasic Editor

    Appendix A. Importing Short Cut Code into CRBasic Editor This tutorial shows: Importing a Short Cut program into a program editor for additional • refinement Importing a wiring diagram from Short Cut into the comments of a • custom program Short Cut creates files, which can be imported into CRBasic Editor.

  • Page 32: Example Programs

    Appendix B. Example Programs CRBasic Example B-1. CS451 SDI-12 Program for CR1000X Datalogger 'CR1000X Series 'Declare Variables and Units FRun Changed Public BattV Public PTemp_C Public CS451(2) Public Observed Public Lvl_corr Public Offset Alias CS451(1)=Lvl_ft Alias CS451(2)=Temp_C Units BattV=Volts Units...
  • Page 33 EndIf 'Call Data Tables and Store Data CallTable Hourly CallTable Daily NextScan EndProg CRBasic Example B-2. CS451 SDI-12 Program for CR200(X)-Series Datalogger 'CR200(X) Series 'Declare the variable for the water level measurement Public CS451(2) 'Rename the variable names Alias CS451(1)=Level...

  • Page 34: 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 36: Sdi-12 Sensor Support

    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 datalogger. This appendix discusses the structure of SDI-12 commands and the process of querying SDI-12 sensors.

  • Page 37: Acknowledge Active Command (A

    Appendix D. SDI-12 Sensor Support TABLE D-1. Campbell Scientific Sensor SDI-12 Command and Response Set Name Command Response Start Concurrent atttnn<CR><LF> Measurement aC1!...aC9! Start Concurrent aCC! Measurement and atttnn<CR><LF> aCC1!...aCC9! Request CRC a<values><CR><LF> Send Data aD0!...aD9! a<values><CRC><CR><LF> Information on each of these commands is given in following sections.

  • Page 38: Address Query Command

    Appendix D. SDI-12 Sensor Support n = the number of values to be returned when one or more subsequent D! commands are issued D.2.4 Address Query Command (?!) Command ?! requests the address of the connected sensor. The sensor replies to the query with the address, a.

  • Page 39: Start Concurrent Measurement Commands (Ac

    Appendix D. SDI-12 Sensor Support D.2.7 Start Concurrent Measurement Commands (aC!) A concurrent measurement (aC!) command follows the same pattern as the aM! command with the exception that it does not require the datalogger to pause its operation, and other SDI-12 sensors may take measurements at the same time.

  • Page 40: Start Measurement Commands With Cyclic Redundancy Check (Amc! And Acc

    Appendix D. SDI-12 Sensor Support TABLE D-3. Example aC! Sequence Sensor Z immediately responds with Z+1+2+3+4+5+6+7+8+9+10<CR><LF> the sensor address and the 10 values. 10 seconds later, after a total of 30 seconds have passed, the datalogger XD0! starts the process of data from sensor X by issuing the first D command.

  • Page 41: Sdi-12 Transparent Mode

    Transparent mode is entered while the computer is communicating with the datalogger through a terminal emulator program. It is accessed through Campbell Scientific datalogger support software or other terminal emulator programs. Datalogger keyboards and displays cannot be used. The terminal emulator is accessed by navigating to the Datalogger list in PC200W, the Tools list in PC400, or the Datalogger list in the Connect screen of LoggerNet.

  • Page 42: Changing An Sdi-12 Address - Cr200(X) Series

    Appendix D. SDI-12 Sensor Support Under Select Device, located in the lower left side of the window, select the CR1000 station. Click Open Terminal. Select All Caps Mode. Press Enter until the datalogger responds with the CR1000> prompt. Type SDI12 and press Enter. At the Select SDI12 Port prompt, type the number corresponding to the control port where the sensor is connected and press Enter.

  • Page 43: References

    Appendix D. SDI-12 Sensor Support 10. To change the SDI-12 address, type aAb!, where a is the current address from the above step and b is the new address. Press Enter. The sensor changes its address and responds with the new address. 11.

  • Page 44: Rs-232 Connection Via Computer Terminal

    Stop bits Flow control None You will now be able to communicate with the CS451/CS456. At the prompt, push the <Enter> key several times. This will wake-up the RS-232 mode of the sensor. TABLE shows the RS-232 commands that can be entered once it is in the RS-232 mode.
  • Page 45 Appendix E. RS-232 Connection Via Computer Terminal Software TABLE E-2. RS-232 Terminal Commands Terminal Commands Values Returned Serial Number, Pressure/Level, Temperature (in configured units) Serial Number, Pressure (kPa), Temperature (°C) Serial Number, ∆R(ohms), Rb(ohms), Temperature (°C), Element Serial Number, Product Name Copyright information, OS Version and Date, Serial Number, Element Serial Number, Product Name, User Defined Name (Station Name), SDI-12 Address...
  • Page 47 Campbell Scientific Worldwide Offices Australia Germany Location: Garbutt, QLD Australia Location: Bremen, Germany Email: Email: info@campbellsci.com.au info@campbellsci.de Website: www.campbellsci.com.au Website: www.campbellsci.de Brazil South Africa Location: São Paulo, SP Brazil Location: Stellenbosch, South Africa Email: andread@campbellsci.com.br Email: sales@csafrica.co.za Website: Website: www.campbellsci.com.br www.campbellscientific.co.za...

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