Campbell cs215 Instruction Manual
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Campbell cs215 Instruction Manual

Temperature and relative humidity probe
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CS215 Temperature and
Relative Humidity Probe
Revision: 7/12
C o p y r i g h t
©
2 0 0 5 - 2 0 1 2
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 cs215

  • Page 1 CS215 Temperature and Relative Humidity Probe Revision: 7/12 C o p y r i g h t © 2 0 0 5 - 2 0 1 2 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

    CS215 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 4.1 Step 1 —...
  • Page 6 A.3 Operating Range of RH Element ............A-1 A.4 Measurement Below 0ºC..............A-2 Figures 4-1. CS215 and 41303-5A Radiation Shield on a tripod mast ..... 3 4-2. CS215 and 41303-5A Radiation Shield on a CM200 Series Crossarm.................... 3 7-1. Screen capture of SDI-12 Transparent Mode on CRBasic CR200(X) Series Datalogger using control port C1/SDI12 and changing SDI-12 address from 0 to 1 ........

  • Page 7: Introduction

    If damage to the cable is suspected, consult with a Campbell Scientific applications engineer. • Although the CS215 is rugged, it should be handled as a precision scientific instrument. • The black outer jacket of the cable is Santoprene® rubber. This compound was chosen for its resistance to temperature extremes, moisture, and UV degradation.

  • Page 8: Quickstart

    CS215 Temperature and Relative Humidity Probe 4. Quickstart 4.1 Step 1 — Mount the Probe Review Section 7, Installation, for complete instructions. To install the CS215, you will need: • 41305-5A 6-plate Radiation Shield • 1/2" open end wrench •...

  • Page 9: Cs215 And 41303-5A Radiation Shield On A Tripod Mast

    CS215 Temperature and Relative Humidity Probe 41303-5A CS215 Tripod or Tower Mast FIGURE 4-1. CS215 and 41303-5A Radiation Shield on a tripod mast Tripod or Tower Mast 41303-5A CS215 CM200 Series Crossarm FIGURE 4-2. CS215 and 41303-5A Radiation Shield on a...

  • Page 10: Step 2 - Use Scwin Short Cut To Program Datalogger And Generate Wiring Diagram

    4.2 Step 2 — Use SCWin Short Cut to Program Datalogger and Generate Wiring Diagram The simplest method for programming the datalogger to measure the CS215 is to use Campbell Scientific's SCWin Short Cut Program Generator. 1. Open Short Cut and click on New Program.
  • Page 11 CS215 Temperature and Relative Humidity Probe 3. Select CS215 Temperature and Relative Humidity Sensor then click the right arrow to add it to the list of sensors to be measured. 4. Define the name of the public variables. Variables default to AirTC and RH that hold the air temperature and relative humidity measurements.

  • Page 12: Overview

    6. Wire according to the wiring diagram generated by SCWin Short Cut. 5. Overview The CS215 probe uses a single chip element that incorporates both a temperature and RH sensor. Each element is individually calibrated with the calibration corrections stored on the chip. The element is easily changed in the field.

  • Page 13: Specifications

    The probe housing is designed to withstand permanent exposure to all weathers and to fit into a range of radiation shields including lower cost compact shields. Lead length for the CS215 is specified when the sensor is ordered. Table 5-1 gives the recommended lead lengths.

  • Page 14: Temperature Measurement

    CS215 Temperature and Relative Humidity Probe 6.1 Temperature Measurement Operating Range: -40° to +70°C ±0.3°C at 25°C, ±0.4°C over +5° to +40°C, Accuracy: ±0.9°C over -40° to +70°C Response Time with Filter: 120 s (63% response time in air moving at 1 m/s)

  • Page 15: Installation

    7.2 Assembly and Mounting The CS215 must be housed inside a radiation shield when used in the field. Typically, the 41303-5 6-plate shield is used. This radiation shield has a U-bolt for attaching the shield to tripod mast / tower leg (see Figure 4-1 in Section 4, Quickstart), or CM200 series crossarm (see Figure 4-2 in Section 4, Quickstart).

  • Page 16: Wiring

    “daisy-chain” fashion which can minimize cable runs in some applications. (However, see below for limits on the total cable length.) There are two ways to set the SDI-12 address of the CS215: • By sending the required commands to the sensors via an SDI-12 recorder/datalogger that allows talk through to the sensor.

  • Page 17: Power Conservation

    In very low power applications battery power can be conserved by turning the 12 V supply to the CS215 on just before the measurement (allowing a ‘warm- up’ time of at least 100 ms) and then turning it off afterwards.

  • Page 18: Measurements At Slow Scan Rates

    Celsius and relative humidity as a percentage (0 to 100)). NOTE If your Short Cut version does not include specific support for the CS215, the generic SDI12 Sensor instruction can be used by setting the first parameter label to represent temperature and the second for relative humidity.

  • Page 19: Measurements At Fast Scan Rates

    The example program provided in Section 7.4.3.4, CR5000 Program for Measuring One Sensor Every 30 Seconds, shows how the SlowSequence() can be used to make measurements from the CS215 while the main scan can run at a much faster rate.

  • Page 20: Example Programs

    7.4.3.1 CR200(X) Program for Measuring One Sensor Every 30 Seconds 'CR200(X) Series Datalogger 'Example program showing measurement of a single CS215 sensor every 30 sec 'Declare the variables we are going to use Public CS215meas(2)'An array suitable to read the SDI-12 data into...

  • Page 21: Cr3000 Program For Measuring One Sensor Every 10 Seconds

    CS215 Temperature and Relative Humidity Probe 7.4.3.3 CR3000 Program for Measuring One Sensor Every 10 Seconds 'CR3000 'Example program showing measurement of a single CS215 sensor every 10 seconds 'Declare Variables and Units we are going to use. Public TRHData(2)

  • Page 22: Cr10(X) Program Measuring A Sensor Every Minute

    Inloc Editor to ensure two locations are free (refer to Edlog help for more information). ;{CR10X} ;Example program for a CS215 sensor on control port 1 ;Measures every minute and stores some summary statistics ;once per hour *Table 1 Program...

  • Page 23: Changing The Sdi-12 Address Using Loggernet And A Datalogger

    Up to ten CS215s or other SDI-12 sensors can be connected to a single datalogger control port. Each SDI-12 device must have a unique SDI-12 address between 0 and 9. (The CS215 also supports the extended range up to 126.) The factory-set SDI-12 address for the CS215 is 0.

  • Page 24: Cr800/Cr850 Datalogger

    4. Press the <enter> key until the datalogger responds with the “CR800>” prompt. 5. To query the CS215 for its current SDI-12 address, press the <enter> key. At the “CR800>” prompt, make sure you are in Caps Lock mode and...

  • Page 25: Cr1000 Datalogger

    SDI12 and press the <enter> key. The CR800 will respond with “Enter control port 1 or 3.” Enter control port and press enter. Type in ?! and the CS215 will respond with SDI-12 address. If no characters are typed within 12 seconds, then the mode is exited.

  • Page 26: Mixed-Array "Edlog" Dataloggers

    4. Press the <enter> key until the datalogger responds with the “CR1000>” prompt. 5. To query the CS215 for its current SDI-12 address, press the <enter> key. At the “CR1000>” prompt, make sure you are in Caps Lock mode and enter the command SDI12 and press the <enter>...

  • Page 27: Screen Capture Of Sdi-12 Transparent Mode On Edlog Array-Based

    SDI-12. If any invalid SDI-12 command is issued, the datalogger will exit the SDI-12 Transparent Mode. 6. To query the CS215 for its current SDI-12 address, enter the command ?!. The CS215 will respond with the current SDI-12 address. 7. 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.

  • Page 28: Table-Based "Edlog" Dataloggers

    CS215 Temperature and Relative Humidity Probe 7.5.5 Table-Based “Edlog” Dataloggers 1. Connect a single CS215 to the datalogger Control Port p as described in Section 7.3, Wiring, and download a datalogger program that contains the SDI-12 Recorder (Instruction 105) instruction with valid entries for each parameter.

  • Page 29: Maintenance And Calibration

    CS215 is relatively low cost, we recommend that you replace the sensor element at the normal interval you would recalibrate similar probes, e.g.

  • Page 30: Sensor Element Replacement

    CS215 Temperature and Relative Humidity Probe 8.1 Sensor Element Replacement To replace the element: 1. Disconnect the sensor from the 12 V power supply. 2. Remove the filter by unscrewing it in a counter-clockwise direction when looking towards the tip of the sensor.
  • Page 31 CS215 Temperature and Relative Humidity Probe 8. Either hold the element by the black top of the package (the other end to the gold plated pins) or use a pair of fine nosed pliers or tweezers to grip the sensor by the pins. Carefully offer up the pins to the socket in the end of probe.
  • Page 32 CS215 Temperature and Relative Humidity Probe Gold colored Sensing part of side of the tip the element. Printing on this side. Sensing Element Gold pins Sensor Thread for the connector filter sticking out of the end of the tube Center line of...

  • Page 33: Troubleshooting

    CS215 Temperature and Relative Humidity Probe Sensing part of element NOT on the center line Center line of the sensor body FIGURE 8-2. Incorrect fit of sensor element (side view) 9. Troubleshooting Symptom: -9999 or NAN for temperature, 0 or unchanging value for RH 1.

  • Page 34: References

    CS215 Temperature and Relative Humidity Probe Symptom: Incorrect temperature or relative humidity 1. If 12V power is switched “on” for the measurement, verify the program is allowing a “warm-up” time of at least 100 ms. 2. Check to see if the filter tip has been contaminated. Replace the filter tip (PN 18142), or clean with distilled water as needed.

  • Page 35: Environmental Performance

    Appendix A. Environmental Performance This Appendix details tests and limitations of the sensor when exposed to extremes of the environment. A.1 Tests to Defined Standards The sensor element has been tested by the manufacturer and found to comply with various environmental test standards as shown in the table below: TABLE A-1.
  • Page 36 A.4 Measurement Below 0 ˚ The CS215 provides a humidity reading that is referenced to the saturated water vapor pressure above liquid water, even at temperatures below 0˚C, where ice might form. This is the common way to express relative humidity and is as defined by the World Meteorological Organization.
  • Page 38 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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