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: 4/16
C o p y r i g h t
©
2 0 0 5 - 2 0 1 6
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: 4/16 C o p y r i g h t © 2 0 0 5 - 2 0 1 6 C a m p b e l l S c i e n t i f i c ,...
  • Page 3 Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual. (Product manuals are available for review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by CSI, are warranted only to the limits extended by the original manufacturer.
  • Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an application 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 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 SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.

  • Page 7: 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 8 7-1. CS215 and 41303-5A Radiation Shield (left) and RAD06 Radiation Shield (right) on a tripod mast ......... 9 7-2. CS215 and 41303-5A Radiation Shield on a CM200 Series Crossarm ..................9 9-1. Correct fit of sensor element (side view)........... 15 9-2.

  • Page 9: Introduction

    CS215 Temperature and Relative Humidity Probe Introduction The CS215 Temperature and Relative Humidity probe is designed for general meteorological and other datalogging applications. It utilizes the SDI-12 communications protocol to communicate with any SDI-12 recorder, simplifying installation and programming. Before using the CS215, please study: Section 2, Precautions •...

  • Page 10: Quickstart

    CS215 Temperature and Relative Humidity Probe QuickStart Short Cut is an easy way to program your datalogger to measure the CS215 sensor and assign datalogger wiring terminals. Short Cut is available as a download on and the ResourceDVD. It is included in www.campbellsci.com...
  • Page 11 Celsius. This can be changed by clicking the Deg C box and selecting Deg F, for degrees Fahrenheit, or K for Kelvin. SDI-12 Address defaults to 0. Enter the correct SDI-12 Address for the CS215 if it has been changed from the factory-set default value.

  • Page 12: Overview

    Overview The CS215 probe uses a single chip element that incorporates both a temperature and an RH sensor. Each element is individually calibrated with the calibration corrections stored on the chip. The element is easily changed in the field, reducing downtime and calibration costs.

  • Page 13: Temperature Measurement

    CS215 Temperature and Relative Humidity Probe Diameter: 12 mm at sensor tip, maximum 18 mm at cable end Length: 180 mm, including cable strain relief Housing Material: Anodized aluminum Housing Classification: IP65 (NEMA 4) Filter Material: Inner expanded PTFE filter. Filter material has a porosity of 64% and a pore size of <...

  • Page 14: Installation

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

  • Page 15: Sdi12Recorder() Instruction

    (p. 16) discuss temperature and relative humidity sensors. When used in the field, the CS215 must be housed in a radiation shield. Typically, the 41303-5A or RAD06 six-plate solar radiation shield is used. A 41003-5 or RAD10 ten-plate solar radiation shield can also house the CS215...

  • Page 16: Installation In A 41303-5A Or 41303-5B 6-Plate Shield

    Collar Adapter Loosely thread the collar adapter into the base of the 10-plate shield. Insert the CS215 sensor through the collar as far as it will go. Hold the collar and sensor, and finish threading the collar into the shield by hand.

  • Page 17: Mount The Shield

    Failure to secure the cable can lead to breakage of the wires due to fatigue caused by blowing back and forth in the wind. FIGURE 7-1. CS215 and 41303-5A Radiation Shield (left) and RAD06 Radiation Shield (right) on a tripod mast FIGURE 7-2.

  • Page 18: Operation

    CRBasic dataloggers but the CR200(X) series. The sensor returns two values: temperature in degrees Celsius and relative humidity as a percentage (0 to 100). The factory-set SDI-12 address for the CS215 is 0. See Appendix D.1.2, Change Address Command (aAb!) , for instructions on changing the SDI- (p.

  • Page 19: Measurements At Fast Scan Rates

    In low-power applications, conserve battery power 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. If available, the switched 12 V output of the datalogger can be used.

  • Page 20: Troubleshooting And Maintenance

    (pn 18142), or clean with distilled water as needed. Maintenance The CS215 probe requires minimal maintenance, but dust, debris, and salts on the filter cap will degrade sensor performance. Check the white filter on the end of the sensor for debris. If dirt or salt is ingrained in the filter, clean with distilled water or replace it.

  • Page 21: Calibration

    CS215 Temperature and Relative Humidity Probe Calibration The life of the humidity chip element is quoted as many years with a typical drift of less than 1% per year when used in ‘clean’ environments. Because it can be difficult to know what the sensor has been exposed to and because the element is relatively inexpensive, we recommend replacing the sensor element at the normal interval you would recalibrate similar probes, e.g., annually.
  • Page 22 CS215 Temperature and Relative Humidity Probe If the sensor is oriented incorrectly, it will not work. The CAUTION element will draw excessive power from the supply and may be damaged if left powered in this state for more than a few seconds.

  • Page 23: Correct Fit Of Sensor Element (Side View)

    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 24: Attributions And References

    CS215 Temperature and Relative Humidity Probe Sensing part of element NOT on the center line Center line of the sensor body FIGURE 9-2. Incorrect fit of sensor element (side view) 10. Attributions and References Santoprene is a registered trademark of Exxon Mobile Corporation.
  • Page 25 CS215 Temperature and Relative Humidity Probe Meyer, S. J. and K. G. Hubbard, 1992: Nonfederal Automated Weather Stations and Networks in the United States and Canada: A Preliminary Survey, Bulletin Am. Meteor. Soc., 73, No. 4, 449-457. Weiss, A., 1977: Algorithms for the calculation of moist air properties on a hand calculator, Amer.
  • Page 26 CS215 Temperature and Relative Humidity Probe...

  • Page 27: Importing Short Cut Code Into Crbasic Editor

    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 Short Cut creates files, which can be imported into CRBasic Editor.

  • Page 29: Example Programs

    Appendix B. Example Programs This example program shows the measurement of a single CS215 and can be used directly with CR200(X) series dataloggers. CRBasic Example B-1. Program Example for CR200(X) Series 'CR200(X) Series Datalogger 'Program measures one CS215 sensor every 30 seconds and stores the average 'temperature and a sample of relative humidity every 10 minutes.

  • Page 30: Cr1000, Cr3000, And Cr5000 Dataloggers

    CR1000, CR3000, and CR5000 dataloggers. CRBasic Example B-2. Program Example for CR300-Series, CR6-Series, CR800-Series, CR1000, CR3000, and CR5000 Dataloggers 'Program measures one CS215 sensor every 5 seconds and stores the average 'temperature and a sample of relative humidity every 10 minutes. 'Wiring Diagram...

  • Page 31: Environmental Performance

    Appendix C. Environmental Performance This Appendix details tests and limitations of the sensor when exposed to extremes of the environment. C.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 TABLE below: TABLE C-1.

  • Page 32: Operating Range Of Rh Element

    World Meteorological Organization. If an RH value is required to be referenced to ice, the CS215 readings will need to be corrected. One consequence of using water as the reference is that the maximum humidity...

  • Page 33: Sdi-12 Sensor Support

    An active sensor responds to each command. Responses have several standard forms and terminate with <CR><LF> (carriage return – line feed). Standard SDI-12 commands supported by the CS215 are listed in TABLE D-1. TABLE D-1. SDI-12 Command and Response Set...

  • Page 34: Address Query Command

    Appendix D. SDI-12 Sensor Support Continuous Measurements aRC0! a<values><CR><LF> and Request Start atttn Verification D.1.1 Address Query Command (?!) Command ?! requests the address of the connected sensor. The sensor replies to the query with the address, a. D.1.2 Change Address Command (aAb!) Sensor address is changed with command aAb!, where a is the current address and b is the new address.

  • Page 35: Sdi-12 Transparent Mode

    SDI12 <enter>. The response SDI12> indicates that the CS215 is ready to accept SDI-12 commands. To query the CS215 for its current SDI-12 address, key in ?! <enter> and the CS215 will respond with its SDI-12 address. If no characters are typed within 60 seconds, then the mode is exited.

  • Page 36: Cr1000 Datalogger Example

    <enter>. The response Entering SDI12 Terminal indicates that the CS215 is ready to accept SDI-12 commands. To query the CS215 for its current SDI-12 address, key in ?! <enter> and the CS215 will respond with its SDI-12 address. If no characters are typed within 60 seconds, the mode is exited.

  • Page 37: Cr1000 Example Of Using The Sdi-12 Transparent Mode To

    Appendix D. SDI-12 Sensor Support FIGURE D-2. CR1000 example of using the SDI-12 transparent mode to change the SDI-12 address from 0 to 3. Sensor is connected to control port 7.
  • Page 38 Appendix D. SDI-12 Sensor Support...
  • Page 40 Santo Domingo, Heredia 40305 SOUTH AFRICA COSTA RICA • cleroux@csafrica.co.za • info@campbellsci.cc www.campbellsci.co.za www.campbellsci.cc Campbell Scientific Southeast Asia Co., Ltd. Campbell Scientific Ltd. 877/22 Nirvana@Work, Rama 9 Road Campbell Park Suan Luang Subdistrict, Suan Luang District 80 Hathern Road Bangkok 10250...

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