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Campbell CS451 Product Manual

Submersible pressure transducer
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CS451/CS456
Submersible Pressure Transducer
Revision: 8/19
Copyright © 2009 – 2019
Campbell Scientific

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  • Page 1 CS451/CS456 Submersible Pressure Transducer Revision: 8/19 Copyright © 2009 – 2019 Campbell Scientific...
  • 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 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 • 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 CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...

  • Page 9: 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. QuickStart ..............2 5.
  • Page 10 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 ......10 7-2. Heyco Cable Grip ................10 7-3.
  • Page 11 Factory Settings .................. 14 8-2. Wire Colour, Function, and A200 Connection ........15 8-3. CS451/CS456 SDI-12 Commands ............. 17 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.

  • Page 13: 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 14: Quickstart

    Open Short Cut and click Create New Program. Double-click the data logger 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).
  • Page 15 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 16: 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 17: 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 18: 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 data loggers: • CR1000X, CR300 series, CR6, CR200(X) series, CR800 series, CR1000, CR3000, and CR5000...
  • Page 19 Total Error Band (TEB) includes the combined errors due to nonlinearity, hysteresis, nonrepeatability, and thermal effects over the compensated temperature range, per 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.

  • Page 20: Installation

    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 21: Dislodging Bubbles

    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 22: Heyco Cable Grip

    FIGURE 7-1. Transducer suspended with split mesh cable grip 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 23: Measure The Initial Elevation

    For example, if the correct elevation of the water, as measured by a staff gauge 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 24: Sdi-12 Data Logger Connections

    For the CR6 and CR1000X data loggers, triggering conflicts may occur when a companion terminal is used for a triggering instruction such as TimerInput(), PulseCount(), or WaitDigTrig(). For example, if the CS451 is connected to C3 on a CR1000X, C4 cannot be used in the TimerInput(), PulseCount(), or WaitDigTrig() instructions.

  • Page 25: Changing Nose Cones

    Edlog data loggers are provided at www.campbellsci.com\old-manuals. The SDI12Recorder() measurement instruction programs CRBasic data loggers to measure the CS451/CS456 sensor. For most CRBasic data loggers, the SDI12Recorder() instruction has the following syntax: SDI12Recorder(Destination, SDIPort, SDIAddress, “SDICommand”,...

  • Page 26: 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 27: A200 Wiring

    CS451/CS456 Submersible Pressure Transducer NOTE Drivers should be loaded before plugging the A200 into the computer. The A200 drivers can be downloaded, at no charge, from: www.campbellsci.eu/downloads. 8.1.1.2 A200 Wiring One end of the A200 has a terminal block while the other end has a type B female USB port.

  • Page 28: Determining Which Com Port The A200 Has Been Assigned

    (p. 14) 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 29: Sdi-12 Commands

    Transparent Mode. The CS451/CS456 supports the commands that are listed in TABLE 8-3. When using an M! command, the data logger 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 30 CS451/CS456 Submersible Pressure Transducer TABLE 8-3. CS451/CS456 SDI-12 Commands aM6! or aC6! ΔR Ohms Ohms Temperature °C IN – DAC counts single-ended measurement, IN+ DAC counts single- ended measurement OUT DAC counts differential measurement aM7! or aC7! Pressure/Level Configured Settings (provides 2.

  • Page 31: Measuring Multiple Sdi-12 Sensors

    Measuring Multiple SDI-12 Sensors Campbell Scientific recommends using separate terminals when possible. However, multiple CS451/CS456 sensors or other SDI-12 sensors can be connected to a single data logger control or U terminal. Each SDI-12 device must have a unique SDI-12 address. See Appendix D, SDI-12 Sensor Support , for more information.

  • Page 32: Sample Number Command

    Campbell Scientific recommends that the CS451/CS456 be factory recalibrated and checked every 24 months. The CS451/CS456 has no user-serviceable parts. Cable can be damaged by abrasion, rodents, sharp objects, twisting, crimping or crushing, and pulling. Carefully handle the cable to avoid damage. If the cable is damaged, send the sensor to Campbell Scientific for repairs.

  • Page 33: 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 data logger • damaged cables •...

  • Page 35: Importing Short Cut Code Into Crbasic Editor

    Appendix A. Importing Short Cut Code into CRBasic Editor Short Cut creates a .DEF file that contains wiring and memory usage information, and a program file that can be imported into the CRBasic Editor. By default, these files reside in the C:\campbellsci\SCWin folder. Import Short Cut program file and wiring information into CRBasic Editor: Create the Short Cut program following the procedure in Section 4, .

  • Page 37: Example Programs

    Appendix B. Example Programs CRBasic Example B-1. CS451 SDI-12 Program for CR1000X Data Logger '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...
  • Page 38 'Call Data Tables and Store Data CallTable Hourly CallTable Daily NextScan EndProg CRBasic Example B-2. CS451 SDI-12 Program for CR200(X)-Series Data Logger 'CR200(X) Series 'Declare the variable for the water level measurement Public CS451(2) 'Rename the variable names Alias CS451(1)=Level...

  • Page 39: 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 41: 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 data logger. This appendix discusses the structure of SDI-12 commands and the process of querying SDI-12 sensors.

  • Page 42: 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 aCC! Measurement and atttnn<CR><LF> aCC1!...aCC9! Request CRC a<values><CR><LF> aD0!...aD9! Send Data a<values><CRC><CR><LF> Extended aXNNN! a<values><CR><LF> Commands Information on each of these commands is given in following sections.

  • Page 43: 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 44: Start Concurrent Measurement Commands (Ac

    Appendix D. SDI-12 Sensor Support D.2.7 Start Concurrent Measurement Commands (aC!…aC9!) A concurrent measurement (aC!) command follows the same pattern as the aM! command with the exception that it does not require the data logger to pause its operation, and other SDI-12 sensors may take measurements at the same time.

  • Page 45: 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 data logger XD0! starts the process of data from sensor X by issuing the first D command.

  • Page 46: Extended Commands

    Transparent mode is entered while the computer is communicating with the data logger through a terminal emulator program. It is accessed through Campbell Scientific data logger support software or other terminal emulator programs. Data logger keyboards and displays cannot be used.

  • Page 47: Changing An Sdi-12 Address

    Appendix D. SDI-12 Sensor Support Changing an SDI-12 Address , are used with most Campbell Scientific (p. D-7) data loggers. Appendix D.3.2, Changing an SDI-12 Address – CR200(X) Series , lists the steps used for CR200(X)-series data loggers. (p. D-7) D.3.1 Changing an SDI-12 Address...

  • Page 48: References

    Appendix D. SDI-12 Sensor Support Select All Caps Mode. Press Enter until the data logger responds with the CR2XX> prompt. Type SDI12 and press Enter. The response SDI12> indicates that the sensor is ready to accept SDI-12 commands. To query the sensor for its current SDI-12 address, type ?! and press Enter. The sensor responds with its SDI-12 address.

  • Page 49: 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 50 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 52 INFO Global Sales & Support Network A worldwide network to help meet your needs Australia Costa Rica Southeast Asia Garbutt, QLD Australia San Pedro, Costa Rica Bangkok, Thailand Location: Location: Location: 61.7.4401.7700 506.2280.1564 66.2.719.3399 Phone: Phone: Phone: info@campbellsci.com.au info@campbellsci.cc thitipongc@campbellsci.asia Email: Email: Email:...

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