INSTRUCTION MANUAL CS106 Barometric Pressure Sensor Revision: 9/14 C o p y r i g h t © 1 9 9 5 - 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 4. Quickstart .................................................................... 1 5. Overview ...........
Table of Contents B. Example Programs.................................................. B-1 B.1 CRBasic Programs .......................................................................... B-1 B.1.1 Example CR1000 Program Using Sequential Mode ................ B-1 B.1.2 Example CR1000 Program Using Pipeline Mode .................... B-2 B.2 Edlog Program................................................................................. B-3 Figures 7-1. 7-2. 7-3. 7-4. 8-1.
CS106 Barometric Pressure Sensor 1. Introduction The CS106 measures barometric pressure for the range of 500 to 1100 mb. This range equates to from below sea level (as in a mine) to over 15,000 feet above sea level. Designed for use in environmental applications, the CS106 is compatible with all Campbell Scientific dataloggers. 2. 3. Cautionary Statements • READ AND UNDERSTAND the Precautions section at the front of this manual.
CS106 Barometric Pressure Sensor 2 3. When Short Cut opens, select New Program. 4. Select Datalogger Model and Scan Interval (default of 5 seconds is OK for most applications). Click Next.
CS106 Barometric Pressure Sensor 5. Under the Available Sensors and Devices list, select Sensors | Meteorological | Barometric Pressure folder. Select CS106 Barometric Pressure Sensor. Click to move the selection to the Selected device window. Enter the Sea Level Elevation Correction. The default units for the sea level elevation correction is meters; this can be changed by clicking on the Elevation Correction Units box and selecting Feet.
CS106 Barometric Pressure Sensor WARNING 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, RTDAQ, 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.
CS106 Barometric Pressure Sensor 6.2 Accuracy Total Accuracy***: ±0.3 mb @ +20 °C ±0.6 mb @ 0 to +40 °C ±1 mb @ –20 to +45 °C ±1.5 mb @ –40 to +60 °C Linearity*: ±0.25 mb @ 20 °C Hysteresis*: ±0.03 mb @ 20 °C Repeatability*: ±0.03 mb @ 20 °C Calibration Uncertainty**: ±0.15 mb @ 20 °C Long-Term Stability: ±0.
CS106 Barometric Pressure Sensor 7. Installation 7.1 Jumper Settings The CS106 can be operated in one of two modes: shutdown and normal. The mode is selected by a jumper located underneath the plastic cover of the barometer. When the jumper is not installed, the CS106 is in shutdown mode and the datalogger turns the CS106 on and off with a control port or excitation channel; to use the excitation channel, the datalogger must be able to provide an excitation voltage of 5 Vdc.
CS106 Barometric Pressure Sensor for mounting the CS106, and hardware for mounting the ENC100 to a tripod, tower, or pole. FIGURE 7-2. ENC100 is a very small enclosure that can house one CS106 Remember that for the sensor to detect the external ambient pressure, the enclosure must vent to the atmosphere (i.e., not be “hermetically sealed”). Enclosures purchased from Campbell Scientific properly vent to the atmosphere.
CS106 Barometric Pressure Sensor 7.3 Wiring 7.3.1 Datalogger Connection Before connecting the barometer to the datalogger, a yellow warning label must be removed from the pigtails. The warning label reminds the user of the importance of properly connecting the barometer to the datalogger. Wiring is shown in FIGURE 7-3 and TABLE 7-1.
CS106 Barometric Pressure Sensor TABLE 7-1. Signal and Ground Connectors for CS106 Wire CS106 Terminal Datalogger Single-Ended Measurement Datalogger Differential Measurement Blue VOUT S.E. Input High Side of Diff Input Yellow AGND AG (CR10(X), CR500, CR510) (Other Dataloggers) Low Side of Diff.
CS106 Barometric Pressure Sensor 7.4 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.
CS106 Barometric Pressure Sensor Volt (SE) (P1) 1: 1 Reps 2: 25 2500 mV 60 Hz Rejection Range 3: 1 SE Channel 4: 1 Loc [ CS106 ] 5: 0.240 Multiplier 6: 500 Offset At sea level, a multiplier of 0.24 and an offset of 500 will report the barometric pressure in mbar or hPa. The offset will need to be adjusted if the barometer is not at sea level (see Section 8.5, Correcting Pressure to Sea Level). If different barometric pressure units are desired, see Section 8.2, Conversion Factors.
CS106 Barometric Pressure Sensor 8.2 Conversion Factors In the example programs, the pressure is reported in millibars (mb). To report pressure in different units, multiply the measured pressure by the appropriate conversion factor. This is done by including an expression in a CRBasic program or using Z=X*F (P37) in an Edlog program. See TABLE 8-1 below for conversion factors. TABLE 8-1. Conversion Factors for Alternative Pressure Units 8.3 To find Multiply by hPa or mb 1.0 kPa 0.1 mm of Hg 0.
CS106 Barometric Pressure Sensor 8.5 Correcting Pressure to Sea Level The weather service, most airports, radio stations, and television stations adjust the atmospheric pressure to a common reference (sea level). Equation 3 can be used to find the difference in pressure between the sea level and the site. That value (dP) is then added to the offset (500 mb in our example programs) in the measurement instruction. U. S. Standard Atmosphere and dry air were assumed when Equation 3 was derived (Wallace, J. M.
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Appendix A. Importing Short Cut Code Into CRBasic Editor 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.
Appendix A. Importing Short Cut Code Into CRBasic Editor NOTE Once the file is edited with CRBasic Editor, Short Cut can no longer be used to edit the datalogger program. Change the name of the program file or move it, or Short Cut may overwrite it next time it is used. 5. The program can now be edited, saved, and sent to the datalogger. 6. Import wiring information to the program by opening the associated .DEF file.
Appendix B. Example Programs B.1 CRBasic Programs B.1.1 Example CR1000 Program Using Sequential Mode This CR1000 program uses the sequential mode, which is the simplest mode and can be used for most meteorological applications. Although the example is for the CR1000, other CRBasic dataloggers, such as the CR200(X), CR800, CR850, CR3000, and CR9000(X) are programmed similarly. In the example, the CR1000 measures the CS106 once an hour.
Appendix B. Example Programs B.1.2 Example CR1000 Program Using Pipeline Mode Although this example is for the CR1000, other CRBasic dataloggers, such as the CR200(X), CR800, CR850, CR3000, and CR9000(X) are programmed similarly. In the example, the CR1000 measures the CS106 once an hour in a program that runs at 1 Hz. In order to keep the CR1000 running in a pipeline mode, the measurement instruction is placed outside the “If” statement.
Appendix B. Example Programs B.2 Edlog Program Although this example is for the CR10X, other Edlog dataloggers, such as the CR510, CR23X, 21X, and CR7, are programmed similarly. In the example, the CR10X turns on the CS106 one minute before the top of the hour using a control port. On the hour the datalogger measures the CS106, and then it turns the CS106 off.
Appendix B.
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