Campbell Wintersense SDI-12 User Manual Download

Page: 1 / 44

Revision:

01/2023

Campbell

Scientific

CSL I.D - 1398

Wintersense SDI-12

Non-Invasive Surface Temperature Sensor

Summary of Contents for Wintersense SDI-12

Page 2: ...under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs can be give...

Page 3: ...cell phones and aerials may also not be applicable according to your locality Some brackets shields and enclosure options including wiring are not sold as standard items in the European market in some...

Page 4: ...beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit cl...

Page 5: ...tallation height and angle 14 8 Maintenance 16 8 1 Clean the sensor 17 8 2 Replace the temperature and humidity element 18 8 2 1 Replace sensor element 19 8 3 Updating the operating system OS 21 8 4 T...

Page 6: ...commands with cyclic redundancy check aMC and aCC 33 B 1 9 Stopping a measurement command 33 B 1 10 Send data command aD0 aD9 33 B 1 11 Continuous measurement command aR0 aR9 34 B 1 12 Extended comman...

Page 7: ...s and use appropriate traffic control measures l Although the Wintersense SDI 12 is rugged it should be handled as a precision instrument l Do not use cable lengths greater than 60 m 200 ft l The blac...

Page 8: ...asy way to program your data logger to measure the sensor and assign data logger wiring terminals Short Cut is available as a download on www campbellsci eu It is included in installations of LoggerNe...

Page 9: ...4 Click the Wiring tab to see how the sensor is to be wired to the data logger Click OK after wiring the sensor 5 Repeat steps three and four for other sensors Click Next Wintersense SDI 12 3...

Page 10: ...ific recommends measurement scans of 10 seconds or more NOTE When the scan rate is less than 20 seconds the Wintersense SDI 12 will be measured using a concurrent command See Start concurrent measurem...

Page 11: ...o make sure it is making reasonable measurements 5 Overview Wintersense SDI 12 smart sensors are simple to install Each sensor is supplied with an integrated mounting bracket and two band clamps suita...

Page 12: ...range 40 to 70 C 40 to 160 F Accuracy 0 4 C Resolution 0 01 C Relative humidity Measurement range 0 to 100 Accuracy 3 Resolution 0 1 Dew point temperature calculated Measurement range 40 to 70 C 40 t...

Page 13: ...cy is against a blackbody source within ambient temperature range of 20 to 50 C and object temperature range of 40 to 60 C 2 Calculated dew point temperature found from Tetens equation solved for dew...

Page 14: ...e terminals when possible However multiple SDI 12 sensors can connect to the same data logger control or U terminal Each must have a unique SDI 12 address Valid addresses are 0 through 9 a through z a...

Page 15: ...estination SDIPort SDIAddress SDICommand Multiplier Offset FillNAN WaitonTimeout Valid values for the SDIAddress are 0 through 9 A through Z and a through z alphabetical characters need to be enclosed...

Page 16: ...ned on for 3 seconds before it can receive an SDI 12 command Table 7 2 SDI 12 commands SDI 121 command Values returned or function Units Max sensor response time sec aM aC 1 Surface temperature 2 Air...

Page 17: ...ct Campbell Scientific for repair 0 SDI 12 address 0 aAb Change address command b is the new address 0 aHA aHB a000000 High volume commands not supported aXWEM nn nn Write emissivity aXREM Read emissi...

Page 18: ...ensor response Comment aIM aIMC Identify measurement for M commands atttn ttt response time seconds n of values returned aIM1 aIM9 Identify measurement for M commands atttn ttt response time seconds n...

Page 19: ...device In the SDI12Recorder instruction the command parameter does not include the SDI 12 address because the address is entered in a separate parameter 7 3 Install bracket The included C bracket used...

Page 20: ...eld of view and consequently the section of road surface being measured The recommended installation height for a Wintersense SDI 12 smart sensor is 3 to 5 metres 10 to 16 feet Sensors can be installe...

Page 21: ...nsors contain a thermopile sensor which detects the presence of thermal radiation emitted from the target surface With non contact infrared thermopile sensors the greater the installation angle of the...

Page 22: ...r around the bolt that is fitted in the round hole towards the front of the sensor Once at the correct angle tighten the bolts by hand until the spring washers are fully compressed Adjust the angle of...

Page 23: ...e and take it down to ground level 2 Remove the six screws attaching the sensor hood to the mounting bracket 3 Lift the sensor hood up and off the mounting bracket 4 Wipe down the hood to remove any d...

Page 24: ...t it to ensure adequate air flow to the sensor element To replace the element the Wintersense SDI 12 unit must be brought down to ground level and the outer hood removed as discussed in Clean the sens...

Page 25: ...ntersense SDI 12 The replacement element is only available from Campbell Scientific It includes a small circuit board that is coated to ensure longer life at high humidity A single row of four gold pi...

Page 26: ...ng the element it may influence the measurements made 2 Ensure the Wintersense SDI 12 has been disconnected from the data logger 3 Remove the filter cap by unscrewing it counter clockwise when looking...

Page 27: ...tly with the sensing module facing the socket center towards the empty row of holes see Figure 8 4 p 20 CAUTION Conditions that will cause the sensor to not work include an improperly oriented element...

Page 28: ...r The XLOADOS OS update process requires access to the data logger terminal mode Campbell Scientific Device Configuration Utility is recommended Although this update may be performed remotely if the s...

Page 29: ...lowing commands l Type SDI12 at the prompt and then enter the corresponding number assigned to the digital terminal the sensor is connected to l Identify the SDI12 address of the sensor by typing at t...

Page 30: ...8 Verify the OS was updated with the verify command aV followed by the aD0 command to read the results 8 4 Troubleshooting Symptom On a CRBasic data logger data values report NAN or on a non Campbell...

Page 31: ...t or erratic Solution 1 Verify that the sensor angle has not changed 2 Check that obstructions such as vehicles are not in the field of view Symptom Temperature and relative humidity measurement value...

Page 32: ...sensor is not installed too close to a radio transmitter or cell phone NOTE All factory repairs and recalibrations require a returned material authorization RMA and completion of the Statement of Prod...

Page 33: ...tional refinement NOTE Once the file is edited with CRBasic Editor Short Cut can no longer be used to edit the program 2 To add the Short Cut wiring information into the new CRBasic program open the D...

Page 34: ...DI 12 Sensors Transparent Mode and SDI 12 Sensors Watch or Sniffer Mode videos B 1 SDI 12 command basics SDI 12 commands have three components l Sensor address a a single character and the first chara...

Page 35: ...a values CR LF or a values CRC CR LF Extended Commands aXNNN a values CR LF 1 Information on each of these commands is given in the following sections B 1 1 Acknowledge active command a The Acknowled...

Page 36: ...address ttt time in seconds until verification information is available n the number of values to be returned when one or more subsequent D commands are issued B 1 4 Address query command Command requ...

Page 37: ...or 0 immediately indicates that it will return two values within the next 35 seconds 0 CR LF Within 35 seconds sensor 0 indicates that it has completed the measurement by sending a service request to...

Page 38: ...ensor Y immediately indicates that it will have 6 06 values ready for collection within the next 40 040 seconds ZC The data logger makes a request to sensor Z to start a concurrent measurement Z02010...

Page 39: ...at www sdi 12 org to learn more about how the CRC code is developed B 1 9 Stopping a measurement command A measurement command M is stopped if it detects a break signal before the measurement is comp...

Page 40: ...ed in the values part of the response to the R command B 1 12 Extended commands Many sensors support extended SDI 12 commands An extended command is specific to a make of sensor and tells the sensor t...

Page 41: ...those manuals on how to use their transparent mode The following examples show how to enter transparent mode and change the SDI 12 address of an SDI 12 sensor The steps shown in Changing an SDI 12 ad...

Page 42: ...ress Enter until the data logger responds with the data logger CR1000X prompt 8 Type SDI12 and press Enter 9 At the Select SDI12 Port prompt type the number corresponding to the control port where the...

Page 43: ...e current address from the previous step and b is the new address Press Enter The sensor changes its address and responds with the new address In the following example the sensor address is changed fr...

Page 44: ...nfo campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India...

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