INSTRUCTION MANUAL CS470/CS471 Compact Bubbler System Revision: 7/14 C o p y r i g h t © 2 0 0 9 - 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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Precautions DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC. FAILURE TO PROPERLY AND COMPLETELY ASSEMBLE, INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS, TOWERS, AND ATTACHMENTS, AND FAILURE TO HEED WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS INJURY, PROPERTY DAMAGE, AND PRODUCT FAILURE.
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 3.1 Shipping Kit and Accessories .............................................................. 2 3.1.
Table of Contents Appendices A. Importing Short Cut Code ...................................... A-1 A.1 Importing Short Cut Code into a Program Editor............................ A-1 A.1.1 CRBasic Datalogger ................................................................. A-1 A.1.2 Edlog ........................................................................................ A-2 B. Example Programs.................................................. B-1 B.1 CRBasic Programs ..............................
Table of Contents 10-1. D-1. D-2. D-3. Status LED ......................................................................................... 17 CS470/CS471 SDI-12 Command and Response Set ...................... D-1 Send Data Return Values ................................................................ D-3 Advanced SDI-12 Commands.........................................................
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CS470/CS471 Compact Bubbler System 1. Introduction The CS470 and CS471 are designed for general liquid level measurements. They use SDI-12 or RS-232 communications protocols to communicate with a SDI-12 or RS-232 recorder simplifying installation and programming. 2. 3. Cautionary Statements • READ AND UNDERSTAND the Precautions section at the front of this manual.
CS470/CS471 Compact Bubbler System 3.1 Shipping Kit and Accessories 3.1.1 Shipping Kit The CS470/CS471 ships with: • • • • (1) Installation Kit (top DIN rail with fastening parts; screw terminal blocks, pin jumpers) (2) #505 Screws (2) #6044 Grommets (1) #1113 Flat-bladed screwdriver 3.1.2 Accessories The following are ordered as Common Accessories: • • • 4. CABLE4CBL-L 4-Conductor 22 AWG Cable — used to connect the CS470/CS471 to a datalogger. Cable length is user-specified.
CS470/CS471 Compact Bubbler System 3. When Short Cut opens, select New Program. 4. Select Datalogger Model and Scan Interval (60 second or higher scan interval is recommended). Click Next.
CS470/CS471 Compact Bubbler System 5. Under the Available Sensors and Devices list, select the Sensors | Generic Measurements folder. Select SDI-12 Sensor, click to move the selection to the Selected device window. Enter the result names and units. The default SDI-12 address is 0 and the default SDI-12 command is aM!. The SDI-12 address should only be changed from the default when more than one sensor is connected to the same datalogger channel.
CS470/CS471 Compact Bubbler System 5. 7. Select any other sensors you have, then finish the remaining Short Cut steps to complete the program. The remaining steps are outlined in Short Cut Help, which is accessed by clicking on Help | Contents | Programming Steps. 8. If LoggerNet, PC400, or PC200W is running on your PC, and the PC to datalogger connection is active, you can click Finish in Short Cut and you will be prompted to send the program just created to the datalogger. 9.
CS470/CS471 Compact Bubbler System • • • Does not use pressurized nitrogen tank — requiring less frequent attendance Existing tubes can be used Compatible with Campbell Scientific CRBasic dataloggers: CR200(X) series, CR800 series, CR1000, CR3000, and CR5000. Also compatible with Edlog dataloggers: CR500, CR510, CR10(X), and CR23X Power Requirements: 10 to 30 Vdc (typically supplied by the datalogger Power Consumption: Quiescent current < 0.
CS470/CS471 Compact Bubbler System 7.1 DIP Switch Settings The default DIP switch settings are shown in TABLE 7-1. The default settings support SDI-12 communications, which is the communication method typically used by our dataloggers. The DIP switch settings need to be changed if using 4 to 20 mA communications (see Appendix C, 4 to 20 mA Operation). TABLE 7-1. Dip Switch Settings for SDI-12 Communications 7.
CS470/CS471 Compact Bubbler System For optimal measurement results, the bubble chamber should be horizontal and aligned in the direction of water flow (maximum tolerance ±5°). The bubble chamber has a ball-and-socket joint that adjusts to 15° in any direction. 7.3 Mounting the CS470/CS471 The CS470/CS471 electronic box should be in a dry and dust-free location such as a Campbell Scientific enclosure. It mounts to an enclosure backplate using DIN rails (included with shipped material).
CS470/CS471 Compact Bubbler System 7.4 7.5 Connect Tubing to the CS470/CS471 1. Cut the bubble tube at a 90° angle with a sharp knife (not scissors). 2. Insert the tubing as far as possible into the tube fitting. 3. Rotate the nut until finger tight. 4. Tighten the nut with a wrench about one and one-quarter turns. Bubble Chamber Installation 1. Install conduit (metal or plastic) from the CS470/CS471 to where the bubble chamber will be located.
CS470/CS471 Compact Bubbler System FIGURE 7-2. Bubble Chamber Installation 10 2. Fasten the conduit in place 3. Attach an elbow or tee joint at the bubble chamber location. The elbow or tee joint should terminate with a 2-inch NPT female threaded connection. 4. Route the tubing through the conduit. 5. Cut the tubing at a 90° angle with a sharp knife (not scissors). 6.
CS470/CS471 Compact Bubbler System FIGURE 7-3. Connection of the Bubble Tube 7. Install the NPT adapter on the end of the elbow or tee joint. 8. Activate the CS470/CS471 while immersing the bubble chamber. The CS470/CS471 needs to be activated, so that the piston pump is operating during this procedure. 9. Insert the tubing as far as possible into the bubble chamber’s tube fitting 10. Rotate the nut until finger tight. 11.
CS470/CS471 Compact Bubbler System measuring tube for the required time period. The purge function can also be activated via an SDI-12 command. NOTE Press the membrane button for at least one second as otherwise the error is called and displayed at the Status LED. FIGURE 7-4. Purge Button and Status LED 7.7 Wiring All electrical connections are made using two screw terminal strips (supplied) at terminal blocks A and B on the underside of the CS470/CS471 (see FIGURE 7-5).
CS470/CS471 Compact Bubbler System FIGURE 7-5. CS470/CS471 Screw Terminals TABLE 7-2.
CS470/CS471 Compact Bubbler System 7.8 Programming Short Cut is the best source for up-to-date datalogger programming code. Programming code is needed, • • when creating a program for a new datalogger installation when adding sensors to an existing datalogger program If your data acquisition requirements are simple, you can probably create and maintain a datalogger program exclusively with Short Cut.
CS470/CS471 Compact Bubbler System 8. 8.1 1. Choose Edit/Insert Block. 2. After the Insert Block dialog box appears, type in a base name for the input locations. Each input location will have the base name with an underscore and a consecutive number. 3. In the Start Address field, type in the number of the first input location. 4. In the Number of InLocs field, type in 7 and select OK. Operation SDI-12 Commands NOTE This section briefly describes using the SDI-12 commands.
CS470/CS471 Compact Bubbler System 8.4 • Use low capacitance, low resistance, screened cable (as fitted by Campbell Scientific) to reach distances of several hundred meters. • Ensure that the power ground cable has low resistance and is connected to the same ground reference as the datalogger control ports. • Be aware that “daisy-chaining” sensors reduces the maximum cable length roughly in proportion to the number of sensors connected in parallel.
CS470/CS471 Compact Bubbler System 9.1 Replacing Tubing 1. Untighten the nut securing the tubing to the hose connection. 2. Pull out tubing. 3. Untighten the nut securing the tubing to the bubble chamber. 4. Pull out tubing. 5. Follow procedures provided in Sections 7.4, Connect Tubing to the CS470/CS471, and 7.5, Bubble Chamber Installation, to reconnect the tubing. 10. Troubleshooting 10.
CS470/CS471 Compact Bubbler System NOTE Any error states arising can be displayed as follows: Press pump membrane button briefly (< 1 sec). The LED lights once for a longer period as confirmation, then pauses. 1st error state arising, then pause. 2nd error state arising, then pause. LED lights continue until all error states arising have flashed. The CS470/CS471 repeats all error states arising for approximately two minutes.
Appendix A. Importing Short Cut Code This tutorial shows: • • How to import a Short Cut program into a program editor for additional refinement. How to import a wiring diagram from Short Cut into the comments of a custom program. A.1 Importing Short Cut Code into a Program Editor Short Cut creates files that can be imported into either CRBasic Editor or Edlog program editor. These files normally reside in the C:\campbellsci\SCWin folder and have the following extensions: • • • • • • • .
Appendix A. Importing Short Cut Code 6. Import wiring information to the program by opening the associated .DEF file. Copy and paste the section beginning with heading “-Wiring for CRXXX–” into the CRBasic program, usually at the head of the file. After pasting, edit the information such that a ' character (single quotation mark) begins each line. This character instructs the datalogger compiler to ignore the line when compiling the datalogger code. A.1.
Appendix B. Example Programs B.1 CRBasic Programs B.1.
Appendix B. Example Programs B.1.
Appendix B. Example Programs B.2 Edlog Program Below is a portion of a CR10X program that measures the CS470/CS471. NOTE The instructions below do not store data in final storage. Instruction 92, Instruction 77 and processing instructions such as Instruction 70 are required to store the data permanently.
Appendix B.
Appendix C. 4 to 20 mA Operation The load resistance connected to the CS470/CS471 must not exceed a specific maximum value. This value depends on the level of the supply voltage of the CS470/CS471. If the load resistance is greater, the output current can no longer be evaluated. Smaller load resistances are allowed. • Read off the maximum load resistance for your power supply from FIGURE C-1. Example: Power supply 18 volt max. load resistance 450 Ohm.
Appendix C. 4 to 20 mA Operation C.1 Setting Operating Parameters using DIP Switches The following 4 to 20 mA operating parameters can be set with DIP switches. DIP switches 1, 2, and 3 are reserved for the SDI-12 interface. Setting measurement type to level or depth • Level Measurement – Set DIP Switch 4 to the OFF position. • Depth Measurement – Set DIP Switch 4 to the ON position. Scaling the measurement With DIPS 5 and 6 you can scale the available measuring range to a smaller range.
Appendix D. SDI-12 Sensor Support D.1 SDI-12 Command Basics SDI-12 commands have three components: Sensor address (a) – a single character, and is the first character of the command. The default address of zero (0) can be used unless multiple sensors are connected to the same port. Command body (e.g., M1) – an upper case letter (the “command”) followed by alphanumeric qualifiers. Command termination (!) – an exclamation mark. An active sensor responds to each command.
Appendix D. SDI-12 Sensor Support D.1.3 Send Identification Command (aI!) Sensor identifiers are requested by issuing command aI!. The reply is defined by the sensor manufacturer, but usually includes the sensor address, SDI-12 version, manufacturer’s name, and sensor model information. Serial number or other sensor specific information may also be included. An example of a response from the aI! command is: 13OTT HACH CBS107 Where: SDI-12 version =1.
Appendix D. SDI-12 Sensor Support TABLE D-2. Send Data Return Values SDI-12 Command Number of Values Returned D! 7 Level [m], Level [cm], Level [ft], Pressure [mbar], Pressure [psi], Temperature [°C], Status D0! 1 Level [m]; resolution: 0.001 m D1! 1 Level [cm]; resolution: 1 cm D2! 1 Level [ft]; resolution: 0.01 ft D3! 1 Pressure [mbar]; resolution: 0.01 mbar D4! 1 Pressure [psi]; resolution: 0.001 psi D5! 1 Temperature [°C]; resolution: 0.1 °C D6! 1 Status Values Returned D.
Appendix D. SDI-12 Sensor Support 4. Press the key until the datalogger responds with the CR2XX> prompt. At the CR2XX> prompt, make sure the All Caps Mode box is checked and enter the command SDI12 . The response SDI12> indicates that the C470/CS471 is ready to accept SDI-12 commands. 5. To query the C470/CS471 for its current SDI-12 address, key in ?! and the C470/CS471 will respond with its SDI-12 address. If no characters are typed within 60 seconds, then the mode is exited.
Appendix D. SDI-12 Sensor Support In that case, simply enter the command SDI12 again, press , and key in the correct control port number when prompted. 6. To change the SDI-12 address, key in aAb! , where a is the current address from the above step and b is the new address (see FIGURE D-2). The C470/CS471 will change its address and the datalogger will respond with the new address. To exit SDI-12 transparent mode, select the Close Terminal button. FIGURE D-2.
Appendix D. SDI-12 Sensor Support 7. To query the CS470/CS471 for its current SDI-12 address, enter the command ?!. The CS470/CS471 will respond with the current SDI-12 address. 8. To change the SDI-12 address, enter the command aAb!; where a is the current address from the above step and b is the new address. The CS470/CS471 will change its address and the datalogger will exit the SDI12 Transparent Mode. 9. Activate the SDI-12 Transparent Mode on Control Port 1 again by entering 1X .
Appendix D. SDI-12 Sensor Support D.3 Advanced SDI-12 Commands All advanced SDI-12 commands begin with O (the letter not zero). TABLE D-3. Advanced SDI-12 Commands Command Response Description aOXP! aOXP Activate purge function. The parameter represents the setting defined as follows: 0 = purge function deactivated 1 = purge function activated aOXG! or aOXG! a Set/query value for local gravitational constant. Format: c: bb: aaaaaa: cb.
Appendix D. SDI-12 Sensor Support 0.003086 m/s2 for each kilometer above sea level. With the following formula the local gravitational constant g in m/s2 can be calculated: g = 9.780356 * (1 + 0.0052885 sin2 -0.0000059 sin2 2) -0.003086 h where is the degrees of latitude and h the height above sea level in km. (Jursa, A.S., Ed., Handbook of Geophysics and the Space Environment, 4th ed., Air Force Geophysics Laboratory, 1985, pp. 14-17). Example: At a height above mean sea level of 0.
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