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Campbell HC2S3 Instruction manual

Other manuals for HC2S3: Instruction Manual
Manual is about: Temperature and Relative Humidity Probe

Summary of HC2S3

  • Page 1

    Instruction manual hc2s3 temperature and relative humidity probe revision: 7/15 c o p y r i g h t © 1 9 9 0 - 2 0 1 5 c a m p b e l l s c i e n t i f i c , i n c ..

  • Page 3: Limited Warranty

    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 ...

  • Page 4: Assistance

    Assistance products may not be returned without prior authorization. The following contact information is for us and international customers residing in countries served by campbell scientific, inc. Directly. Affiliate companies handle repairs for customers within their territories. Please visit www...

  • Page 5: Precautions

    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 mai...

  • Page 7: Table Of Contents

    I 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 ..............................

  • Page 8

    Table of contents ii b.1 example program using single-ended measurement instructions .................................................................................. B-1 b.2 example program using differential measurement instructions .... B-2 c. Absolute humidity .....................................

  • Page 9: Humidity Probe

    1 model hc2s3 temperature and relative humidity probe 1. Introduction the hc2s3 is a rugged, accurate temperature and relative humidity probe that is ideal for long-term, unattended applications. The probe uses rotronic’s in1 capacitive sensor to measure relative humidity and a 100 Ω prt to measure ...

  • Page 10: 4.  Quickstart

    Model hc2s3 temperature and relative humidity probe 2 • refer to section 3.1 , ships with (p. 2) , to ensure that parts are included. The hc2s3 probe and its calibration card are shipped in a small box, with the box and pn 27731 hex plug attached to the cable. 3.1 ships with the hc2s3 ships with: (1...

  • Page 11

    Model hc2s3 temperature and relative humidity probe 3 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..

  • Page 14

    Model hc2s3 temperature and relative humidity probe 6 operating limits: –40 to 100 °c storage temperature: –50 to 100 °c probe length: 85 mm (3.3 in), 183 mm (7.25 in) including connector probe diameter: 15 mm (0.6 in) probe weight: 10 g (0.35 oz) filter: polyethylene, optional teflon ordered separa...

  • Page 15

    Model hc2s3 temperature and relative humidity probe 7 accuracy over measurement range: 6.2 relative humidity measurement sensor: rotronic hygromer ® in1 measurement range: 0 to 100% non-condensing output signal range: 0 to 1.0 vdc accuracy at 23 °c: ±0.8% rh with standard configuration settings typi...

  • Page 16: 7.  Installation

    Model hc2s3 temperature and relative humidity probe 8 see appendix d , changing the hc2s3 settings (p. D-1) , for default settings and digital interface information. 7. Installation if you are programming your datalogger with short cut, skip section 7.1 , wiring to datalogger (p. 8) , and section 7....

  • Page 17

    Model hc2s3 temperature and relative humidity probe 9 table 7-2. Wire color, function, and datalogger connection for differential measurement wire color wire function datalogger connection terminal brown temperature signal u configured for differential analog input h 1 , diff h jumper to yellow temp...

  • Page 18

    Model hc2s3 temperature and relative humidity probe 10 voltse (dest, reps, range, sechan, measoff, settlingtime, integ/fnotch, mult, offset) variations: • temperature reported as °c — set mult to 0.1 and offset to -40 • temperature reported as °f — set mult to .18 and offset to -40 • humidity report...

  • Page 19

    Model hc2s3 temperature and relative humidity probe 11 when used in the field, the hc2s3 must be housed in a radiation shield such as the 41003-5 or rad10 naturally aspirated shields, or the 43502 motor- aspirated shield (please refer to the 43502 product manual for installation details). The white ...

  • Page 20: 8.  Operation

    Model hc2s3 temperature and relative humidity probe 12 figure 7-1. Hc2s3 and 41003-5 radiation shield on a cm200 series crossarm (left) and on a tripod mast (right) figure 7-2. Hc2s3 and rad10 radiation shield on a tripod mast 8. Operation 8.1 measurement the probe uses a rotronic in1 capacitive sen...

  • Page 21

    Model hc2s3 temperature and relative humidity probe 13 8.2 low power operation the hc2s3 draws approximately 2 ma powered from 12v. The hc2s3 can be continuously powered from the 12v terminal, or power can be switched with the sw12v terminal to conserve battery life. When power is switched, a three-...

  • Page 22

    Model hc2s3 temperature and relative humidity probe 14 9.1 troubleshooting symptom: relative humidity is reported as –9999, nan, –40 °c, or 0 % 1. Check that the sensor is wired to the correct analog input channels as specified by the measurement instructions. 2. Verify the voltage range code for th...

  • Page 23

    Model hc2s3 temperature and relative humidity probe 15 the teflon filter is recommended when the sensor is installed in close proximity to the ocean or other bodies of salt water. A coating of salt (mostly nacl) may build up on the radiation shield, sensor, filter and even the sensors. A buildup of ...

  • Page 24

    Model hc2s3 temperature and relative humidity probe 16.

  • Page 25: Into Crbasic Editor

    A-1 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 that can be imported int...

  • Page 26

    Appendix a. Importing short cut code into crbasic editor a-2 mark) begins each line. This character instructs the datalogger compiler to ignore the line when compiling the datalogger code..

  • Page 27: Measurement Instructions

    B-1 appendix b. Example programs b.1 example program using single-ended measurement instructions the following example can be used directly with cr800 series, cr1000, cr3000, and cr5000 dataloggers. 'program measures hc2s3 with single-ended inputs once every 5 seconds and stores the 'average tempera...

  • Page 28: Measurement Instructions

    Appendix b. Example programs b-2 b.2 example program using differential measurement instructions the following example can be used directly with cr800 series, cr1000, cr3000, and cr5000 dataloggers. 'cr1000 program to measure hc2s3 with differential measurements 'program measures hc2s3 with differen...

  • Page 29

    C-1 appendix c. Absolute humidity the hc2s3 measures relative humidity. Relative humidity is defined by the equation below: 100 e e rh s ∗ = (a-1) where rh is relative humidity, e is vapor pressure in kpa , and e s is saturation vapor pressure in kpa. Vapor pressure, e, is an absolute measure of the...

  • Page 30

    Appendix c. Absolute humidity c-2 public airtc public rh public rh_frac, e_sat, e_kpa datatable (temp_rh,true,-1) datainterval (0,60,min,0) average (1,airtc,ieee4,0) sample (1,rh,ieee4) sample (1,e_kpa,ieee4) endtable beginprog scan (1,sec,1,0) portset (9,1) 'turn on switched 12v delay (0,3,sec) '3-...

  • Page 31: Settings

    D-1 appendix d. Changing the hc2s3 settings d.1 hc2s3 default settings the hc2s3 probe has the following default settings, which can be changed as described in the following sections. Additional information can be found in rotronic’s user manual: e-m-hc2 probes-vxxxx, which can be downloaded from ro...

  • Page 32

    Appendix d. Changing the hc2s3 settings d-2 d.2 software and hardware requirements for temperature (analog output 2), the hc2s3 default range is –40 to 60 °c for 0 to 1v. Changing the range requires rotronic hw4 software (version 2.1.0 or higher), and the rotronic model ac3001 usb adapter cable. Pow...

  • Page 33

    Appendix d. Changing the hc2s3 settings d-3 click on “device manager”, select “analog outputs” to see the following screen: change the lower and upper range values and click “ok”. The following screen shows the range –60 to +30: d.4 multiplier and offsets for temperature range analog output 2 is 0 t...

  • Page 34

    Appendix d. Changing the hc2s3 settings d-4 example measurement instructions for cr1000 datalogger, with the sensor wired to se channel 2: public airtc voltse (airtc,1,mv2500,2,0,0,_60hz,0.09,-60).

  • Page 35: Communications

    E-1 appendix e. Hc2s3 digital communications e.1 hc2s3 digital interface specifications the hc2s3 has a uart (universal asynchronous receiver transmitter) that provides two-way digital communications with the probe. Interface cables can be ordered through rotronics for connecting the probe to an rs-...

  • Page 36

    Appendix e. Hc2s3 digital communications e-2 command format: { id adr rdd chksum or } cr answer format: { id adr rdd chksum or } cr the data are returned according to the following structure: example type description 1..3 byte probe type (1= digital probe, 2=analog probe, 3=pressure probe) 1234.56 f...

  • Page 37: Interface

    Appendix e. Hc2s3 digital communications e-3 e.3 rs-485 communications using an md485 rs-485 interface the hc2s3 can be interfaced to a campbell scientific datalogger through an md485 rs-485 interface using the rotronic e2-05xx-mod rs485 cable as described below. Settings for the rs485 port on the m...

  • Page 38

    Appendix e. Hc2s3 digital communications e-4 sensor wiring: e2-05xx-mod cable md485 cr1000 blue a red b green 12v gray/yellow g clear ground symbol if the rotronic cable includes brown and white wires (voltage signals for temperature and humidity), campbell scientific recommends “capping” them with ...

  • Page 39: Serial I/o Module

    Appendix e. Hc2s3 digital communications e-5 e.4 rs-485 communications using an sdm-sio1 serial i/o module the hc2s3 can be interfaced to a campbell scientific datalogger through an sdm-sio1 serial i/o module using the rotronic e2-05xx-mod rs485 cable as described below. The example program uses the...

  • Page 40

    Appendix e. Hc2s3 digital communications e-6 example cr1000 program: 'cr1000 program 'declare variables public serialindest as string * 100 dim string_1 as string const crlf=chr(13)+chr(10) dim hc2s3_split(17) as string * 40 alias hc2s3_split(2) = rh_str 'rh string. Alias hc2s3_split(6) = tempc_str ...

  • Page 42

    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 sc...