TP32MTT.03TP32MTT.03.1

[ GB ] Probes for soil thermal profile measurement

[ GB ][ GB ] Description•Temperaturemeasurementat7levels(TP32MTT.03)or6levels(TP32MTT.03.1)•InaccordancewiththerequirementsoftheWorldMeteorologicalOrganization•RS485digitaloutputwithMODBUS‑RTUprotocol•Accurateandstablemeasureovertime•DegreeofprotectionIP68•Minimalinvasivenessinthesoil

APPLICATION•Agriculture•Geothermicstudies

DescriptionThetemperatureprobeTP32MTT.03isequippedwithsevenPt1001/3DINsensorsforthemeasurementoftemperatureatdepth:+5cm,0,‑5cm,‑10cm,‑20cm,‑50cm,‑1mwithrespecttothesoillevel,accordingtotheindicationsoftheWorldMeteoro‑logicalOrganization(WMO).TheprobeTP32MTT.03.1isequippedwithsixPt1001/3DINsensorsforthemeasure‑mentoftemperatureatdepth:+5cm,0,‑5cm,‑10cm,‑20cm,‑50cmwithrespecttothesoillevel.Thefibreglass tubeensuresaperfect impermeabilityandahigh thermal insolationalongtheverticalaxis.TheRS485 digitaloutputwithMODBUS RTUprotocolallowstheuseofevenverylong connection cables. It can be connected to the datalogger HD32MT.1 andHD32MT.3,ortoanyotherdataloggerwithRS485MODBUSRTUinput.TheM12connectorpresentonthehandgripoftheprobeallowsaneasyconnectionofthecable.Cablelength(optional)2,5or10m,withopenwiresattheend.Powersupply6…30Vdc.

Technical specifi cations

Sensors Pt1001/3DINResolution 0.01°CAccuracy ±0.1°C@0°CWorking temperature ‑40…+85°CTemperature drift 0.003%/°C@20°CPower supply 6…30VdcConsumption 5mA@12VdcOutput RS485withMODBUS‑RTUprotocolConnection 8‑poleM12maleconnectorCable Optional,with8poleswithlengthof2,5or10 m(tobede‑

finedattheorder)withopenwiresattheend.Protection Degree IP68

Fig. 2: installation

Indicatethepresenceoftheprobeduringthemaintenanceoperationsofthesoil(e.g.lawnmowing,ploughing,mechanizedharvesting,etc.).Toremovetheprobefromthesoil,insertapinintotheØ8mmholeatthetopofthehandleandpullitupwards.Remove the probe vertically, avoiding its inclination during extraction to avoid damaging the stem.ConnecttheM12connectorasshowninFig3and4.On request, 5 or 10 m stand-ard cables with 8-pole M12 female connector are available (other lengths available on request).

Connectornumbering

Function Colour

1 Negativepowersupply Black2 Positivepowersupply Red3 Notconnected4 RS485A/‑ Brown5 RS485B/+ White6 Notconnected7 Notconnected8 Notconnected

Fig. 3: connections

Fig. 4: RS485 connection

Fig. 1: dimensions of the probe TP32MTT.03 (mm)InstallationBymeansofanaccessory,performaholeintothesoildeepenoughtoaccommodatethestemoftheprobe.Neverusetheprobetomaketheholeinthesoil,toavoidme‑chanicaldamagetotheprobeitself.Oncetheholehasbeenperformedinthesoil,insertthestemoftheprobesothattheindicatorofthezerolevelisincorrespondencewiththesurfaceofthesoil.Theprobemustbestableinaverticalposition.After the introductionof theprobe into thehole, fill in theempty spacesbetweenthesoilandthestemoftheprobewithsomesoilmadepowder.Toobtainaccuratemeasurements,thesoilshouldbeincontactwiththestem.

Soil level

Groovetoapplytheflagindicatingplacememtposition

HoleØ8mmfortheintroductionofapinfortheextractionoftheprobe

Soillevelindicationonthestemoftheprobe

Soillevel

Probe M12 maleconnector

Cable CPM12-8P...

Termination Termination

Other sensors withRS485 output

PLC, datalogger orconverter RS485/USB

or RS485/RS232 for PC

Probe M12male connector Cavo CPM12-8P...

Shield

White

Brown

Black

Power supply6...30 Vdc

Red

Setting of RS485 communication parameters with a standard communication programBeforeconnectingtheprobetotheRS485networkyoumustassignanaddressandsetthecommunicationparameters,ifdifferentfromthefactorypreset.TheparametersettingisperformedbyconnectingtheprobetothePCaccordingtooneofthefollowingtwoways:

A.ByusingtheoptionalcableCP24,withbuilt‑inRS485/USBconverter.Inthiscon‑nectionmode,theprobeispoweredbytheUSBportofthePC.TousethecableitisnecessarytoinstalltheUSBdriversinthePC.

B.Byusingthesupplied8‑poleM12femaleconnectorortheoptionalcableCPM12‑8P ... and a RS485/USB or RS485/RS232 generic converter. In this connectionmodetheprobeshouldbepoweredseparately.IfRS485/USBconverterisuseditisnecessarytoinstalltherelativeUSBdriversinthePC.

Notes on the installation of unsigned USB drivers:before installingunsignedUSBdriversintoWindowsoperatingsystems7and8,itisnecessarytorestartthePCdisa‑blingthedriversignaturerequest.Iftheoperatingsystemis64‑bit,evenafterinstallation,itisnecessarytodisabletherequestofthedriversignatureeverytimethePCisrestarted.Disabling is not necessary if the CP24 cable is used.

Procedure for setting the parameters1.Startwhilethesensorisnotpowered(iftheCP24cableisused,disconnectoneendofthecable).

2.Startaserialcommunicationprogram,HyperTerminalforexample.SettheBaudRateto57600andsetthecommunicationparametersasfollows(theinstrumentisconnectedtoaCOMtypeport):

DataBits=8,Parity=None,StopBits=2 Intheprogram,setthenumberoftheCOMporttowhichyouconnecttheprobe.

3.Switchthesensoron(whenusingtheCP24cable,connectbothends).4.Waituntiltheprobetransmitsthe&character,thensend(within10secondsfromprobepoweron)thecommand @ andpressEnter.

Note:iftheprobedoesnotreceivethe@commandwithin10secondsfrompoweron,theRS485MODBUSmodeisautomaticallyactivated.Insuchacase,itisnec‑essarytoswitchoffandpowerontheprobeagain.

5.SendthecommandCAL USER ON. Note:theCAL USER ONcommandisdisabledafteraninactivityof5minutes.

Probe M12 connector Cable CP24

Probe M12 connector Cable CPM-8P... Power supplyRed

BlackBrown

White

6.SendthefollowingserialcommandstosettheRS485MODBUSparameters:

Command Reply Description

CMAnnn &| SetaddressRS485tonnnRangingfrom1to247.Preseton1

CMBn &| SetRS485BaudRate:n=0⇒9600,n=1⇒19200Preseton1⇒19200

CMPn &| SetRS485transmissionmode(databits,parity,stopbits):n=0⇒8N1,n=1⇒8N2,n=2⇒8E1n=3⇒8E2,n=4⇒8O1,n=5⇒8O2Preseton2⇒8E1

CMWn &| SetreceivingmodeafterRS485transmission:n=0⇒ ViolateprotocolandgoinTxmoderightafterTxn=1⇒ Respectprotocolandwait3.5charactersafterTxPreseton1⇒Respecttheprotocol

7. It is possible to check the settings of the parameters by sending the followingcommands:

Command Reply Description

RMA Address ReadRS485address

RMBBaud Rate(0,1)

ReadRS485BaudRate:0⇒9600,1⇒19200

RMPTx Mode(0,1,2,3,4,5)

ReadRS485transmissionmode:0⇒8N1,1⇒8N2,2⇒8E1,3⇒8E2,4⇒8O1,5⇒8O2

RMWRx Mode(0,1)

ReadreceptionmodeafterRS485transmission:0⇒ ViolatetheprotocolandgoinTxmoderightafterTx1⇒ Respecttheprotocolandwait3.5charactersafterTx

Note:thecommandCALUSERONisnotrequiredforreadingthesettings. OPERATING MODETheprobeentersRS485MODBUS‑RTUmodeafter10secondsfrompoweron.Duringthefirst10secondsfrompoweron,theprobedoesnotrespondtoanyrequestfromtheMOD‑BUSmasterunit.After10seconds,itispossibletosendMODBUSrequeststotheprobe.

Reading the measurementsInMODBUSmode,itispossibletoread,throughthefunctioncode04h(ReadInputReg‑isters), themeasuredvalues and thestatusof theprobe.The following table lists theavailableMODBUSInputRegisters:

MODBUS Input Registers

Register Number

Register Address Datum Format

1 0Temperaturein°Cat‑1mfromthesoil[x100]Note: the value has no meaning for the probe TP32MTT.03.1

16‑bitinteger

2 1 Temperaturein°Cat‑50cmfromthesoil[x100] 16‑bitinteger3 2 Temperaturein°Cat‑20cmfromthesoil[x100] 16‑bitinteger4 3 Temperaturein°Cat‑10cmfromthesoil[x100] 16‑bitinteger5 4 Temperaturein°Cat‑5cmfromthesoil[x100] 16‑bitinteger6 5 Temperaturein°Catthesoillevel[x100] 16‑bitinteger7 6 Temperaturein°Cat+5cmfromthesoil[x100] 16‑bitInteger

8 7Temperaturein°Fat‑1mfromthesoil[x100]Note: the value has no meaning for the probe TP32MTT.03.1

16‑bitInteger

9 8 Temperaturein°Fat‑50cmfromthesoil[x100] 16‑bitInteger10 9 Temperaturein°Fat‑20cmfromthesoil[x100] 16‑bitInteger11 10 Temperaturein°Fat‑10cmfromthesoil[x100] 16‑bitInteger12 11 Temperaturein°Fat‑5cmfromthesoil[x100] 16‑bitInteger13 12 Temperaturein°Fatthesoillevel[x100] 16‑bitInteger14 13 Temperaturein°Fat+5cmfromthesoil[x100] 16‑bitInteger

Note:incaseofmeasurementerror‑9999isreturned.

Reading the error conditions The functioncode03h (ReadHoldingRegisters)allows to read the r16‑bitegisternumber3(address2)containinginformationonanyerrorstatusoftheprobe.Thebitsof theregister indicatetheerrorconditionaccordingtothefollowingcorre‑spondence:

Bit Description0…8 Functionalerrorwiththecircuitboardorerrorinthecalibrationdata.9 Sensormeasurementerrorat‑1m10 Sensormeasurementerrorat‑50cm11 Sensormeasurementerrorat‑20cm12 Sensormeasurementerrorat‑10cm13 Sensormeasurementerrorat‑5cm14 Sensormeasurementerrorat0cm15 Sensormeasurementerrorat+5cm

The register is clearedafter reading. If theerror conditionpersists, then theerrorcodeisrestored.

ORDERING CODESTP32MTT.03:Temperature probe equippedwith seven Pt100 1/3DIN sensors for

themeasurementoftemperatureatdepth:+5cm,0,‑5cm,‑10cm,‑20cm,‑50cm,‑1mwithrespecttothegroundlevel,accordingtotheindicationsoftheWMO.RS485 digitaloutputwithMODBUS-RTUprotocol.8‑poleM12maleconnector.Powersupply6…30Vdc.The CPM12-8P… cable must be ordered separately.

TP32MTT.03.1:TemperatureprobeequippedwithsixPt1001/3DINsensorsforthemeasurementoftemperatureatdepth:+5cm,0,‑5cm,‑10cm,‑20cm,‑50cmwithrespecttothegroundlevel,accordingtotheindicationsoftheWMO.RS485 digitaloutputwithMODBUS-RTUprotocol.8‑poleM12maleconnector.Power supply6…30Vdc.The CPM12-8P… cable must be ordered sepa-rately.

CP24:PCconnectingcable for theconfigurationof theMODBUSparameters.Withbuilt‑inRS485/USBconverter. 8‑poleM12connector onprobe sideandUSBA‑typeconnectoronthePCside.

CPM12-8P.2: 8‑pole cable. Length 2m. 8‑poleM12 connector at one side, openwiresontheotherside.

CPM12-8P.5: 8‑pole cable. Length 5m. 8‑poleM12 connector at one side, openwiresontheotherside.

CPM12-8P.10:8‑polecable.Length10m.8‑polesM12connectoratoneside,openwiresontheotherside.

TP32MTT.03.A:Accessorytoperformtheholeinthesoiltoinserttheprobe.TP32MTT.03.B:Accessoryforsignalingthepresenceoftheprobe.

Delta Ohm srl - Via G. Marconi, 5 - 35030 Caselle di Selvazzano (Pd) - ItalyTel. 0039 0498977150 r.a. Fax 0039 049635596 - E-mail: info@deltaohm.com Web Site: www.deltaohm.com

RoHS 2002/95/EC

0324.14

CE CONFORMITY• Safety: EN61000-4-2, EN61010-1 Level 3• Electrostatic discharge: EN61000-4-2 Level 3• Electric fast transients: EN61000-4-4 Level 3, EN61000-4-5 Level 3• Voltage variations: EN61000-4-11• Electromagnetic interference susceptibility: IEC1000-4-3• Electromagnetic interference emission: EN55022 class B

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