Operating instructions Radar Level Sensor OTT RLS
Contents
1. 9 5 5 Connecting the OTT RLS to any datalogger using an SDI 12 interface 11 5 6 Connecting the OTT RLS to any datalogger using a 4 20 mA interface 12 5 7 Determining the maximum load resistance at the 4 20 mA interface 12 5 8 Notes on using the 4 20 mA interface 13 5 9 Note on using the RS 485 interface 13 6 SDI 12 commands and responses 14 6 1 Standard commands 14 6 2 Advanced SDI 12 commands 15 7 Carrying out maintenance work 20 8 Repalt ccc kth chews die se eines Nine On ARR hen 20 9 Troubleshooting 21 10 Note about the disposal of old units 22 1 1 Technical Data 2 21244 414 Laine pma bas bade a 23 Annex A Connecting the OTT RLS to LogoSens 2 or DuoSens using an SDI 12 or RS 485 interface 25 Annex B Connecting the OTT RLS to LogoSens 2 or DuoSens using a 4 20 mA interface 28 Annex C D2. Description Query the firmware version of the OTT RLS a sensor address ccccccc firmware version Example V1 10 0 Set units for commands aOPA lt value gt and aOPB lt value gt Read unit for commands aOPA lt value and aOPB lt value gt a sensor address lt value gt 0 m 1 cm 2 f Set units for commands aM aMC aOAB lt value gt and aOAC lt valve gt Read unit for commands aM aMC aOAB lt value gt and aOAC lt valve gt a sensor address lt value gt 0 m 1 cm 2 ft Caution Changing the unit deletes any set reference or offset value 15 Command Response Set read measurement mode level or distance measurement aOAA lt value gt a lt value gt lt CR gt lt LF gt aOAA a lt value gt lt CR gt lt LF gt Set read error indicator aOSI lt value gt a lt value gt lt CR gt lt LF gt aOSI a lt value gt lt CR gt lt LF gt Description Set measuring mode Read out measuring mode a sensor address lt value gt 0 measuring mode Level measurement acti vated Water level related to a level zero 1 measuring mode Distance measurement activated distance of OTT RLS water surface Factory setting 1 Caution If entries have been made before changing the measuring mode for the parameters aOAB lt value gt aOAC lt value gt l aOPA lt value gt or aOPB lt value gt these must be input again There is no automatic conversion of the parameters entered Se
3. Operating instructions Radar Level Sensor OTT RLS These operating instructions version 04 0309 cover the OTT RLS firmware from V 1 11 0 production date as of July 2009 The current firmware version can be determined with the SDI 12 command aoov If the OTT RLS is in its delivered state the firmware version can also be found in the factory acceptance test certificate supplied Caution firmware version V 1 11 0 introduced new SDI 12 commands and existing commands were changed If an OTT RLS with firmware V 1 11 0 or newer is exchanged for an older device the configuration of the datalogger must be checked and changed if necessary Please take note of Chapter 6 We reserve the right to make technical changes and improvements without notice Table of contents ERT TETT u u4u 0u 2e 4 Reedereien ae 4 2 Order numbers 4 3 Basic safety information 5 4 Introduction u u22 22 0 2m seems 6 5 Installing the OTT RLS 8 5 1 Criteria for selecting a suitable mounting location 8 5 2 Notes on powers pplr cisdiccasiuknarxmidednderumsarh Se Brei 9 5 3 Suitable cable types when using the RS 485 interface 9 5 4 Mounting the OTT RLS
4. Send data after am a sensor address lt valuel gt level distance value pbbbb eee m pbbbbb cm pbbbbb ee ft P sign b digit before the decimal point output without leading zeroes e digit after the decimal point output in the case of invalid measurement value 99999999 can be changed with advanced command aos lt value2 gt status of the last measurement for details see response to command aM1 Start measurement and request CRC Cyclic Redundancy Check For details see command aM The response to the following aD0 command is extended by a CRC value a lt valuel gt lt value2 gt lt CRC gt lt CR gt lt LF gt Query status of the last measurement a sensor address ttt time in seconds until the sensor makes the status available OTT RLS response 000 n number of measured values OTT RLS response 2 a lt CR gt lt LF gt service request 20 mA interface OTT RLS would consequently interrupt the continuous measuring Command Response aDO a lt valuel gt lt value2 gt lt CR gt lt LF gt aMC1 atttn lt CR gt lt LF gt and immediately afterwards a lt CR gt lt LF gt Description Send data after aM1 a sensor address lt valuel gt status of the last measurement 0 measured value O K 2 no target recognised 4 internal error device fault See Chapter 8 Repair 8 variance of individual measurements too large 16 SDI 12 inter
5. SDI 12 08 2m 26 66f 2 30m 6 6 98 5 ft 30 35 m 98 5 115 ft Average temperature coefficient range 20 60 C 4 140 F Accuracy 4 20 mA Average temperature coefficient at 20 C 68 F Measuring time Power supply Power consumption 2 Measurement operation Rest mode Interfaces Beam angle of antenna Transmission frequency Transmission power Materials Housing Radom front plate Mounting Weight including mounting Cable gland sealing range with inlet min max without inlet min max Connection capacity of screw terminal strip Solid conductor Wire with end cap and plastic collar Terminal assignment screw terminal strip Terminal 1 Terminal 2 Terminal 3 Terminal 4 Terminal 5 Terminal 6 Terminal 7 Rotation range of swivel mount Lateral axis Longitudinal axis Type of protection at horizontal installation Dimensions L x W x H Temperature range Operation Storage Relative humidity 0 8 35m 80 3500 cm 26 115 ft 0 001 m 1 cm 0 01 ft 10 mm 0 03 ft 3 mm 0 01 ft 10 mm 0 03 ft 0 01 of full scale 10 K 0 1 of full scale 10 ppm of full scale K 20 seconds 9 6 28 V DC typ 12 24 V DC lt 140 mW lt 12 mA at 12 V lt 1 mW lt 0 05 mA at 12 V 4 20 mA measurement update every 20 seconds SDI 12 RS 485 two wire SDI 12 protocol 12 6 24 GHz puls radar lt 5mW ASA UV sta
6. The measuring mode M1 supplies extended status information If required this can also be recorded in an additional channel with function block SDI 12 Master OTT SDI RS485 You will find further information on the used SDI 12 commands and responses in Chapter 6 SDI 12 commands and responses Please note The OTT PLS makes the measurement results available a maximum of 25 seconds after the SDI 12 command am 27 Annex B Connecting the OTT RLS to LogoSens 2 or DuoSens using a 4 20 mA interface Fig 13 Connecting the OTT RLS to LogoSens 2 using a 4 20 mA interface Use the 100 Ohm OTT resistor order number 55 550 800 9 5 The letters above the screw terminal strip identify the possible connections on the LogoSens 2 Fig 14 Connecting the OTT RLS to DuoSens using a 4 20 mA interface The letters above the screw terminal strip identify the possible connections on the DuoSens 28 Connect the OTT RLS to the LogoSens 2 Station Manager or to the DuoSens Compact Datalogger as shown in Figure 13 and 14 Take note of the operating instructions for the LogoSens 2 DuoSens Maximum connecting cable length recommended wire cross section depending on the amount of voltage supply and the size of the burden load resistor Please note that the ohmic resistance of the connecting cable together with the eventually existing burden do not exceed the max allowed load resistance see Chapter 5 7 LogoSens 2 A
7. There are two ways to connect the OTT RLS Method A using the SDI 12 interface protocol and physical interface SDI 12 Method B using the RS 485 interface SDI 12 protocol via physical RS 485 interface Recommendation method B longer range more resistant to faults Method A Connecting the OTT RLS via the SDI 12 interface protocol and physical interface SDI 12 The maximum length of the connecting cable is 100 m 330 ft Recommended wire cross section 0 5 mm AWG 21 Connect the OTT RLS to the LogoSens 2 Station Manager or to the DuoSens Compact Datalogger as shown in Figure 10 Take note of the operating instruc tions for the LogoSens 2 DuoSens Fig 10 Connecting the OTT RLS to LogoSens 2 or DuoSens using LogoSens 2 DuoSens an SDI 12 interface Av R A The letters above the screw terminal strip i i i i identify the possible connections on the SDI 12 SDI 12 LogoSens 2 DuoSens Input Q S Q Q Input S 9 Q Q gt gt S Q lt lt 222909929 2909290992929 LOG EG OGGE N I E H P H RLS RLS 25 Method B Connect OTT RLS using the physical RS 485 interface SDI 12 protocol via physical RS 485 interface Refer to Chapter 5 3 for the maximum connecting cable length and the reco
8. 0010 0409 0304 00 Fax 49 0 831 56 17 209 Commerzbank AG M nchen BLZ 733 400 46 Kto Nr 775 0649 00 BIC COBADEFF733 IBAN DE13 7334 0046 0775 0649 00 into ott hydrometry de Sparkasse Allg u BLZ 733 500 00 Kto Nr 18 861 BIC BYLADEMIALG IBAN DE24 7335 0000 0000 0188 61 www ott hydrometry de 31 Annex E Radio Approval USA Grant of Equipment Authorization TCB GRANT OF EQUIPMENT AUTHORIZATION Certification Issued Under the Authority of the Federal Communications Commission By PHOENIX TESTLAB GmbH Date of Grant 08 29 2007 Koenigswinkel 10 D 32825 Blomberg Germany Ott Messtechnik GmbH amp Co KG Ludwigstrasse 16 PO Box 21 40 Kempten D 87437 Germany Attention Mr Kay Zircher Manager Grant Notes NOT TRANSFERABLE EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE and is VALID ONLY for the equipment identified hereon for use under the Commission s Rules and Regulations listed below FCC IDENTIFIER OA60TTRLS Name of Grantee Ott Messtechnik GmbH amp Co KG Equipment Class Part 15 Low Power Communication Device Transmitter Application Dated 08 29 2007 Notes Radar Level Sensor Frequency Output Frequency Emission FCC Rule Parts Range MHZ Watts Tolerance Designator 15C 24150 0 24150 0 This device must be professionally installed 32 Annex F Radio Approval Canada Technical Approval Certificate TECHNICAL APPROVAL
9. Attach the wall bracket e g using four hex bolts M6 and nuts Insert housing bracket without sensor into wall bracket and lightly tighten the hex bolts A see fig 5 Preparing the cable gland With a cable diameter of 7 0 11 0 mm remove inlet Insert screwdriver vertically into the seam and lever out the inlet See Figure 4 Insert the connecting cable 10 Fig 4 OTT RLS connection area Clamping range of the cable gland with inlet 4 0 to 7 0 mm without inlet gt 7 0 to 11 0 mm Mounting the radar sensor Remove screw cover Insert connecting cable from OTT RLS to datalogger through cable gland Remove insulation from connecting cable With flexible wires put end caps on the wires Connect the connecting cable to the terminal block Take note of Chapters 5 5 and 5 6 and Appendices and B If required the terminal strip can be pulled out for connecting Retighten connecting cable as necessary Tighten the tightening nut of the cable gland torque for tightening nut 6 Nm Screw on the screw cover and tighten firmly by hand Insert sensor into housing bracket and lightly tighten the hex bolts B see fig 5 Align the housing parallel longitudinal and lateral axis with the water surface using a bubble level Tighten the hex bolts B housing shell carefully see fig 5 Tighten the hex bolts A wall housing brackets carefully see fig 5 Check alignment of the OTT RLS once more Screw ter
10. R I 4 20 mA Input 2999 100 Ohm load resistor gt lt amp 22202202022 Zn S A 6 i N H H RLS DuoSens only with a DuoSens i we with analog extension 4 20mA Input Q S S Q 2 22929929D AOS 7 amp GS L N p RLS Fig 15 Setting operating parameters of the LogoSens 2 I 4 20 mA function block The DuoSens function block U I Pt100 is set in the same way Configuring the LogoSens 2 DuoSens for OTT RLS with 4 20 mA interface Create a LogoSens 2 DuoSens channel with function block I 4 20 mA LogoSens 2 or U 1 PH100 DuoSens Analog sensors tab Apply the following settings I 4 20m amp Terminal block Sensor lag time s I Error code if range overflow F Auxiliary sensor supply via relay contact at terminal block U gt GND lt 11V Terminal block Measurement mode only with DuoSens Sensor lag time s Error code if range overflow Auxiliary sensor supply via relay contact at terminal block only for LogoSens 2 LogoSens 2 A R DuoSens C F terminal block used screw terminal strip of the LogoSens 2 DuoSens Set to I 4 20 mA ext switches on the LogoSens 2 DuoS
11. USB type B 3 m 63 105 001 9 2 97 000 039 9 5 97 000 040 9 5 63 105 025 3 2 63 105 026 3 2 65 050 001 9 2 3 Basic safety information Read these operating instructions before using the OTT RLS for the first time Make yourself completely familiar with the installation and operation of the OTT RLS Retain these operating instructions for later reference The OTT RLS is used for contactless level measurement of surface waters Only use the OTT RLS in the manner described in these operating instructions For further information see Chapter Introduction Note all the detailed safety information given within the individual work steps All safety information in these operating instructions are identified with the warning symbol shown here Never use the OTT RLS in areas where there is a danger of explosion For further information see Chapter 5 Installing the OTT RLS Note that the electric installation of the OTT RLS may only be done by a professional For further information see Chapter 5 Installing the OTT RLS Protect the power supply connection with a fuse 2 5 ampere blowing speed fast For further information see Chapter 5 Installing the OTT RLS It is essential to comply with the electrical mechanical and climatic specifications given in the Technical Data section For further information gt see Chapter 11 Technical data Do not make any changes or retrofits to the OTT RLS If changes or r
12. When using solar panels we recommend the use of an overvoltage protection device 5 3 Suitable cable types when using the RS 485 interface The maximum length of the connecting cable is 1 000 m 3 300 fi Recommended cable type Twisted pair cable unshielded alternatively shielded The wires intended for the power supply can be twisted pair but do not have to be Types of OTT cable which can be used see accessories up to 500 m 1 650 ft length of connecting cable 2 x 2 x 0 5 mm approx AWG 22 flexible wires 7 x AWG 30 500 to 1000 m 1 650 to 3 300 ft length of connecting cable 2 x 2 x 0 75 mm2 AWG 20 flexible wires 7 x AWG 28 5 4 Mounting the OTT RLS Warning Ensure no moisture enters the connection area when the screw cover is open If the connection area gets moist there is increased danger of corrosion of the electric contacts Assembling the swivel mount see also Annex C Mounting surface concrete or masonry Make four holes 8 mm 5 16 43 mm 1 7 ft deep using a hammer drill use wall bracket as a template Insert the four plastic plugs supplied into the holes Attach the wall bracket using the four wood screws supplied Insert housing bracket without sensor into wall bracket and lightly tighten the hex bolts A see fig 5 Mounting surface auxiliary construction e g metal stand with mounting plate Drill four holes 7 mm 9 32 in the mounting plate use wall bracket as a template
13. CERTIFICATE based on the Agreement on Mutual Recognition between the European Community and Canada CERTIFICATION NUMBER NUM RO DE CERTIFICATION TYPE OF SERVICE TYPE DE SERVICE CERTIFICATE HOLDER TITULAIRE DU CERTIFICAT TYPE OF EQUIPMENT GENRE DE MAT RIEL TRADE NAME AND MODEL MARQUE ET MODELE FREQUENCY RANGE BANDE DE FR QUENCES EMISSION DESIGNATION TRC 43 D SIGNATION D MISSION CRT 43 CONDUCTED POWER RATING WATT PUISSANCE NOMINALE WATT ANTENNA INFORMATION INFORMATION D ANTENNE ACCESSORIES ACCESSOIRES CONTACT INFORMATION OF TESTING LABORATORY COORDONN ES DU LABORATOIRE D ESSAI CERTIFIED TO CERTIFI SELON LE SPECIFICATION ISSUE CAHIER DES CHARGES DITION A gt PHOENIX TESTLAB CERTIFICAT D APPROBATION TECHNIQUE en se basant l accord de reconnaissance mutuelle entre la Communaut Europ enne et le Canada 7253A OTTRLS New Single Certification OTT MESSTECHNIK GmbH amp Co KG Ludwigstrasse 16 87411 Kempten Germany RADAR LEVEL SENSOR OTT RLS 24 15 GHz 1G33P0N Integral Radom Antenna PHOENIX TESTLAB GMBH Koenigswinkel 10 32825 Blomberg Germany RSS 210 Issue 7 RSS GEN Issue 2 RSS 102 Issue 2 Certification of equipment means only that the equipment has met the requirements of the above noted specification License applications where applicable to use certified equipment are acted on accordingly by the issuing office and will depend on the existin
14. OK 2 3 0 mA no target recognized 4 3 1 mA internal error device defect see Chapter 8 Repair 8 3 2 mA variance of individual measurements too large 16 3 3 mA SDI 12 interface break infringement of SDI 12 inter face protocol e g communication via SDI 12 interface between the commands aM and aD0 3 4 mA value below or above measuring range 32 3 5 mA internal error device defect see Chapter 8 Repair 1 response to commands aM aM1 and aDO 21 22 10 Note about the disposal of old units Within the member countries of the European Union In accordance with the European Union guideline 2002 96 EC OTT takes back old devices within the member countries of the European Union and disposes of them in an appropriate way The devices concerned by this are marked with the symbol shown aside For further information on the return procedure please contact your ocal sales contact You will find the addresses of all sales partners in the internet on www ott com Please take into consideration also the national implementation of the EU guideline 2002 96 EC of your country For all other countries Dispose of the OTT RLS properly after taking out of service Observe the regulations valid in your country for the disposal of electronic devices Never put the OTT RLS into the normal household waste Used materials see Chapter 11 Technical Data 11 Technical Data Measuring range Resolution SDI 12 interface Accuracy
15. OTT RLS is passive If needed the sup ply for the current loop must be injected by wire linking the supply voltage Tipp To connect the OTT RLS using the 4 20 mA interface a 4 wire cable is required If the OTT RLS is also to be configurable via SDI 12 commands use 5 wire cable length up to 100 m or 6 wire cable cable length up to 1000 m RLS RLS ll 2 8 4 Ss 7 23 H 7 SOSSE SISISESIEISIS gt I gt 9 Et 6 X 2 6 6 AR a RR Os fon vv 5 7 Determining the maximum load resistance at the 4 20 mA interface The load resistance burden ohmic resistance of the connection cable connected to the OTT RLS must not exceed a specific maximum value This value depends on the level of the supply voltage of the OTT RLS If the load resistance is greater the output current can no longer be evaluated Smaller load resistances are allowed Read off the maximum load resistance for your power supply from the follow ing diagram Example Power supply 18 volt gt max load resistance 450 ohm The OTT RLS delivers an output current corresponding to the measured value for a load resistance of up to 450 ohm Dimension the connected electrical circuit accordingly Chec
16. SS amp 5 0 om 3 3 Figure is not true to scale 17 Command Response Description SDI 12 RS 485 interface set read offset for level distance measurement aOAB lt value gt aOAB a0251 lt CR gt lt LF gt and after a max of 25 seconds a lt CR gt lt LF gt a lt value gt lt CR gt lt LF Set offset value Read offset value a sensor address lt value gt pbbbb eee m pbbbb cm pbbbb ee fi p sign b digit before the decimal point e digit after the decimal point a lt CR gt lt LF gt service request Input output without leading zeroes Value range 9999 999 9999 999 Factory setting 0 000 With this command you can add a linear offset positive negative to a level distance measurement After setting the offset value the OTT RLS automatically starts a measure ment After receiving the service request check the measu red value with command aD0 If input is unsuccessful the radar sensor replies with a new service request Caution This command overwrites any set reference value Example Measurement 10 040 m Offset 0 200 m Output 9 840 m Note If the units are subsequently changed aoSU lt value gt the OTT RLS resets the set offset value to the factory setting SDI 12 RS 485 interface set read reference value for the offset for level distance measurement aOAC lt value gt aOAC 18 a0251 lt CR gt lt LF gt an
17. bilized ABS TFM PTFE 1 4301 V2A approx 2 1 kg 4 63 Ib 4 0 7 0 mm 0 16 0 28 7 0 11 0 mm 0 28 0 43 0 25 2 5 mm AWG 24 to 12 0 25 1 5 mm AWG 24 to 16 power supply RS 485 B RS 485 A 4 20 mA A 20 mA SDI 12 DATA GND 90 15 IP 67 submersion depth max 1 m 3 3 ft Submersion duration max 48 h 222 mm x 152 mm x 190 mm 8 74 x 5 98 x 7 48 40 60 C 40 140 F 40 85 C 40 185 F 0 100 3 1 at 20 C 68 F ambient temperature 1013 mbar 29 9 inHg air pressure 45 to 65 relative humidity ideal reflector without interfering reflector in the sensor beam 2 Power consumption of OTT RLS with SDI 12 RS 485 or externally supplied 4 20 mA interface 31 Condensation on the front plate of the antenna Radom can disturb measuring accuracy 23 Performance classification in accordance with DIN EN ISO 4373 Measurement reliability Temperature range Relative humidity EMC limits and radio approvals EMV for Short Range Device Safety of equipment of low voltage device Approval for Short Range Device Europe Approval for Short Range Device USA Approval for Short Range Device Canada 24 Performance class 1 Temperature class 1 Class 1 ETSI EN 301 489 3 EN 60950 1 ETSI EN 300 440 FCC 47 CFR Part 15 RSS 210 Issue 7 C Annex Connecting the OTT RLS via SDI 12 or RS 485 interface to LogoSens 2 or DuoSens
18. cation Possible mounting locations are for example bridges and auxiliary con structions directly above the waterway section to be measured The minimum distance between lower edge of the sensor and water surface must be 0 8 m 2 6 ft dead area in which no useable measurement is possible Select a mounting point high enough so that measurement is possible even with high water levels The mounting point must be steady Vibrations and movement of the mounting point must be avoided Bridges are affected by movements of several centi meters as a result of load changes and temperature movements If pillars are available the sensor can be mounted to a stable positioned pillar with a suit able spacer The water surface must be as smooth as possible in the area of the sensor beam Avoid turbulent areas areas where foam is created surge areas and waterway sections where obstructions or bridge piers cause changes in the water level The measurement result cannot be used if there is ice or snow on the water surface Choose a mounting location that does not become dry at low water levels Stations subject to very rapid changes in water level are not suitable The OTT RLS averages its measurement result over a measuring time of approx 20 seconds The area within the sensor beam see Figures 2 and 3 must be completely free of obstructions Table for approximating the size of the sensor beam Distance Diameter OTT RLS sensor beam water s
19. d after a max of 25 seconds a lt CR gt lt LF gt a lt value gt lt CR gt lt LF gt Set reference value Read reference value a sensor address lt value gt pbbbb eee m pbbbb cm pbbbb ee fi P sign b digit before the decimal point e digit after the decimal point a lt CR gt lt LF gt service request Input output without leading zeroes Value range 9999 999 9999 999 Factory setting 0 000 With this command you can establish a reference to a level zero for example by entering a reference value for level distance measurement Dependent on the units set a0SU lt value gt Command Response Description After setting the reference value the OTT RLS automatically starts a measurement After receiving the service request check the measured value with command aDO After an unsuccessful entry the radar sensor replies with a new service request Caution This command overwrites any set offset value Example Measurement 2 100 m Reference value 1 500 m Output 1 500 m offset calculated by the OTT RLS and applied to all other measured values 0 600 m Note If the units are subsequently changed aosu lt value gt the OTT RLS resets the set reference value to the factory setting 19 20 7 Carrying out maintenance work The OTT RLS radar sensor is almost maintenance free No setting or calibration work is necessary There are likewise no parts
20. e cross section 0 5 mm AWG 21 With separate voltage supply and point to point connection no SDI 12 bus operation a cable length of up to 300 m 985 ft is possible Fig 6 Connecting the OTT RLS to any datalogger using an SDI 12 interface RLS Standard SDI 12 wiring via three wire connecting cable 1234 5 6 7 IE Se NE 12V SDI 12 DATA SDI 12 GND You will find the SDI 12 commands for the OTT RLS in Chapter 6 SDI 12 com mands and responses 11 Fig 7 Examples for connecting the OTT RLS to any datalogger via the 4 20 mA interface Left supplying the loop current from the datalogger Right supplying the loop current to the OTT RIS supply voltage using wire bridges 12 5 6 Connecting the OTT RLS to any datalogger using a 4 20 mA interface Connect the OTT RLS to a 4 20 mA input of the datalogger Follow the data logger handbook when doing this Refer to Figure 7 for the connection assign ments of the OTT RLS The maximum connecting cable length recommended wire cross section depending on the amount of voltage supply and the size of the burden load resistor Please note that the ohmic resistance of the connect ing cable together with the eventually existing burden do not exceed the max allowed load resistance see Chapter 5 7 Caution the 4 20 mA interface of the
21. ens input 1 second before the actual measurement process if required record error codes on range overflow not required with an OTT RLS Insert a 2 point scaling function block into this channel and adjust the relating distance values for the outputed current values e g Point 1 4 gt 0 Point 2 20 gt 35m 115 fi This function also enables the referencing to a level zero In the Channel function block set the unit and number of digits after the decimal place m 3 cm 0 ft 2 29 Annex C Dimensions of wall bracket position of fixing bores 222 mm 8 74 0 35 mm 1 38 2 o LI TO 8 NS 7 0 28 amp m Ve E E N co m o 23 mm 0 91 D 67 5 mm 2 66 ie EN a a 152 mm 5 98 30 Annex D Declaration of Conformity Konformit tserkl rung Declaration of Conformity Declaration de Conformit Wir We Nous OTT Messtechnik GmbH amp Co KG Anschrift Address Adresse Ludwigstra e 16 D 87437 Kempten erkl ren da das Produkt declare that the product declarons que le produit Bezeichnung Name Nom OTT RLS Artikel Nr Article No No d Article 63 105 001 9 2 mit den Anforderungen der Normen fulfills the requirements of the standard satisfait aux exigences des normes EG 2004 108 EG Electromagnetic compatibility and Radio Spectrum Matters ERM ElectroMagnetic Compatibili
22. ensor is used for contactless measurement of the levels of surface water The OTT RLS is based on impulse radar technology The transmitting antenna transmits short radar pulses in the 24 GHz ISM band The separate receiver antenna receives the pulses reflected from the water and uses them to determine the distance between sensor and water surface the time taken by the radar pulses from transmission fo reception is proportional to the distance between sensor and water surface The actual water level of the waterway is then calculated automati cally if required by the radar sensor To do this on initial startup there is the pos sibility of inputting the relevant measurement mode and a reference value Three standardized electrical interfaces are available for connecting the OTT RLS to a datalogger or peripheral devices depending on the version of the device A 20 mA SDI 12 and RS 485 SDI 12 protocol The radar sensor can be configured via the SDI 12 transparent mode of a data logger or via the OTT USB SDI 12 interface accessory SDI 12 RS 485 inter face When using the 4 20 mA interface it is possible to scale the measure ment output to a smaller measuring range The transmission antenna has a beam width of approx 12 The resulting sensor beam can be seen in the depiction in Figures 2 and 3 and the table in Chapter 5 1 The OTT RLS includes a swivel mount that allows the sensor housing to be mount ed parallel longit
23. erminal ID Value no Virtual Terminal ID EF mm FF E BY FF u Terminal block LogoSens 2 A R DuoSens SDI 12 Master A 3 4 specified DuoSens OTT SDI RS485 1 2 specified terminal block used screw terminal strip of the LogoSens 2 DuoSens Slave address SDI 12 bus address Each address may only be allocated once to an SDI 12 bus feed Check ing setting see operating instructions LogoSens 2 DuoSens Chapter SDI 12 transparent mode alter natively with OTT USB SDI 12 interface Factory setting of the OTT RLS 0 Value no 1 Identifies which value from the OTT RLS is recorded in this channel The OTT RLS determines two values with the command aM measurement and status information Measurement mode MI SDI 12 measurement command for this channel Value no Allocation of the status information to a virtual Virtual terminal ID terminal In the relevant Channel function blocks adjust the required units and number of digits after the decimal place m 3 cm 0 ft 2 status information 0 Note To record the measurements and status information of an OTT RLS two channels in the LogoSens 2 DuoSens are thus necessary The first channel contains the function block SDI 12 Master or OTT SDI RS485 as the input signal The second channel contains a function block Virtual Sensor V02 as the input signal If the recording of status information is not required no entry is necessary in the Value no Virtual terminal ID field
24. etrofits are made all guarantee claims are voided Furthermore the radio approval required for its operation is void Have a faulty OTT RLS inspected and repaired by our repair center Never make any repairs yourself under any circumstances For further information see Chapter 8 Repair Dispose of the OTT RLS properly after taking out of service Never put the OTT RLS into the normal household waste For further information see Chapter 10 Note about the disposal of old units Federal Communications Commission FCC Approval Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will berequired to correct the interference at his own expense Industry Canada Approval This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe est conforme la norme NMB 003 du Canada Fig 1 Overview of radar sensor OTT RLS 4 Introduction The OTT RLS radar s
25. face setting reading the upper limit aOPB lt value gt a lt value gt lt CR gt lt LF gt aOPB a lt value gt lt CR gt lt LF gt Description Set upper limit Read upper limit a sensor address lt value gt pbbbb eee m pbbbb cm pbbbb ee ft P sign b digit before the decimal point e digit after the decimal point Input output without leading zeroes Value range 9999 999 9999 999 Factory setting 0 000 Dependent on the units set a0PF lt value gt Note If the units are subsequently changed aOPF lt value gt the OTT RIS resets the set limit to the factory setting With the commands setting reading the lower upper limit you can scale the available measuring range of an OTT RLS to a smaller range Where you do not require the whole measuring range this has the advantage that a higher resolution for the 4 20 mA interface can be achieved Example 16 mA measurement span stands for 5 m 16 ft of water level change available e g lower limit 10 000 m 33 00 ft upper limit 15 000 m 49 00 ft see Fig 9 Fig 9 Scale the measured value output of the 4 20 mA interface down to a smaller range Om 0 ft 4 mA min distance 0 8 m 2 6 ft 24 37 mA 35 m 115 ft 220 mA l pi er 33 ft measured m sr value output lower limit scaledito 15 m 49 ft 5 meters 16 ft y A20 mA variation of upper limit water level y pee 2 238 3 E
26. face interruption breach of the SDI 12 interface protocol e g com munication with the SDI 12 interface between commands aM and aD0 32 internal error temperature calibration values missing device fault See Chapter 8 Repair lt value2 gt signal to noise ratio in dB Value gt 15 dB good signal quality well chosen mounting location and parallel alignment Query the status of the last measurement and request CRC Cyclic Redundancy Check For details see command aM The response to the following aD0 command is extended by a CRC value a lt value1 gt lt value2 gt lt CRC gt lt CR gt lt LF gt More information on the SDI 12 standard commands can be found in the document SDI 12 A Serial Digital Interface Standard for Microprocessor Based Sensors Version 1 1 see Internet page www sdi 12 org 6 2 Advanced SDI 12 commands All advanced SDI 12 commands begin with an 0 for OTT With these commands it is possible to configure the OTT RLS using the transparent mode of a datalogger or with the OTT USB SDI 12 interface accessory Command Response Query firmware version aoov accccccc lt CR gt lt LF gt 20 mA interface set read units for measurements aOPF lt value gt a lt value gt lt CR gt lt LF gt aOPF a lt value gt lt CR gt lt LF gt SDI 12 RS 485 interface set read units for measurements a0SU lt value gt a lt value gt lt CR gt lt LF gt aOSU a lt value gt lt CR gt lt LF gt
27. g radio environment service and location of operation This certificate is issued on condition that the holder complies and will continue to comply with the requirements of the radio standards specifications and procedures issued by the Department La certification du mat riel signifie seulement que le mat riel a satisfait aux exigences de la sp cification indiqu e ci dessus Les demandes de licences n cessaires pour utiliser du mat riel certifi sont trait es en cons quence par le bureau de d livrance et d pendront de l environment radio existant du service et du lieu d exploitation Le pr sent certificat est d livr la condition que le titulaire satisfasse et continue de satisfaire aux exigences de les cahiers des charges sur le normes radio lectriques et aux proc dures du Minist re Labelling of Certified Radio Equipment Certified radio equipment must be labelled with a unique certification registration number which consists of the Company Number CN assigned by the Bureau followed by the Unique Product Number UPN assigned by the certificate holder IC 7253A OTTRLS A radio equipment that is issued a TAC or a Certificate but is not properly labelled is not considered certified Etiquetage du mat riel radio homologu Le mat rial radio homologu doit porter une tiquette sur laquelle figure un seul et unique num ro d homologation enreigstrement qui est form du num ro de compagnie NC attribu par le Bureau et du
28. imensions of wall bracket position of fixing bores 30 Annex D Declaration of Conformity 31 Annex E Radio Approval USA Grant of Equipment Authorization 32 Annex F Radio Approval Canada Technical Approval Certificate 33 1 Scope of supply OTT RLS I Radar sensor OTT RLS two part swivel mount consisting of device and wall brackets with 4 M8 Allen bolts 1 Installation kit 4 x wood screws 6 x 40 mm 4 x plastic plugs S8 2 Double open ended wrenches size 10 x 13 I Operating instructions I Factory acceptance test certificate FAT 2 Order numbers OTT RLS Accessories Radar sensor OTT RLS Version 4 RS 485 4 20 mA interface Version S SDI 12 4 20 mA interface Connection cable twisted pair design PVC black 2x2x0 5 mm approx AWG 22 7 x AWG 30 Connection cable twisted pair design PVC black 2x2x0 75 mm AWG 20 7 x AWG 28 OTT RLS bridge mounting Mounting aid for attaching the OTT RLS to a bridge For side mounting Height according to customer requirements Distance to bridge according to customer requirements Angle bracket For attaching the OTT RLS bridge mounting from above OTT USB SDI 12 Interface For temporarily connecting OTT sensors to a PC with SDI 12 or RS 485 interface Including 1 USB connection cable USB connector type A to
29. k the input resis tance of the connected peripheral device for this purpose Figure 8 Diagram to determine the maximum load resistance as a function of the power supply Minimum power supply 9 6 V Maximum power supply 28 V Resistor tolerance 0 1 15 ppm burden load resistor BOO oreo eee ote ee ear ee eect at take to se ae 700 600 500 400 300 200 100 5 8 Notes on using the 4 20 mA interface Switching behaviour of the 4 20 mA interface After switching on the supply voltage it takes approx 20 seconds until the loop current takes on a value proportional to the water level In the first 20 seconds the loop current is between 3 and 4 mA Afterwards the radar sensor updates the loop current every 20 seconds Caution The 4 20 mA interface cannot be used parallel to the SDI 12 or RS 485 interfaces Exception temporary configuration of the OTT RLS with SDI 12 commands 5 9 Note on using the RS 485 interface The RS 485 interface can only be used with an OTT datalogger In this case the transmission protocol via the physical RS 485 interface is the SDI 12 protocol Connect OTT RLS via the RS 485 interface to the OTT LogoSens DuoSens see see Appendix A version B 13 6 SDI 12 commands and responses 6 1 Standard commands All SDI 12 standard commands SDI 12 version 1 1 are implemented in the OTT RLS The following SDI 12 standard com mands are relevant for the
30. minal strip L Tightening nut Cable gland Connecting cable Removable screw cover __ Screw terminal strip pulled out 1 2 3 4 5 6 7 2a EN 0 SDI 12 protocol via physical ma a 9 T lt a 5 RS 485 interface for connecting to I Yo SN OTT DuoSens and OTT LogoSens 2 o DU 5 ao FG 9 Warning The alignment of the sensor parallel to the water surface must be carried out as accurately as possible Deviation from the parallel alignment leads to a linearity error Incorrect alignment of gt 4 can lead to a function failure of the OTT RLS depending on the other operating parameters such as distance between lower sensor edge and water surface Fig 5 OTT RLS rotation range of swivel mount JP gt WEL 7 g Wr 4 7 MS Md fp Wig GG 2 0 IA 4M 7 BARAA f 7 A Ah Hex bolt A Housing bracket Wall HexbotB L 5 5 Connecting the OTT RLS to any datalogger using an SDI 12 interface Connect the OTT RLS to an SDI 12 input of the datalogger Follow the datalog ger handbook as you do this Refer to Figure 6 for the connection assignments of the OTT RLS The maximum length of the connecting cable is 100 m 330 ft Recommended wir
31. mmended wire cross section Connect the OTT RLS to the LogoSens 2 Station Manager or to the DuoSens Compact Datalogger as shown in Figure 11 Take note of the operating instructions for the LogoSens 2 DuoSens Fig 11 Connecting the OTT RLS to Logo Sens 2 or DuoSens using an RS 485 inter Loges 2 D face SDI 12 protocol er vosens The letters above the screw terminal AR A strip identify the possible connections RS 485 El L RS 485 El on the LogoSens 2 DuoSens Input Q S S S Input S S S S When connecting the OTT RLS to the LogoSens 2 use a 120 Ohm terminator 120 Ohm order number 96 300 205 9 5 Du gt gt e X 222929299299 2222999 ZOE e 1 ZO G 7 amp D H E p H RLS RLS Fig 12 Adjusting the operating parameters of the LogoSens 2 DuoSens SDI 12 Master function block The function block OTT SDI RS485 is set in the same way Configuring the LogoSens 2 DuoSens for the OTT RLS with SDI 12 interface Create a LogoSens 2 DuoSens channel with SDI 12 Master or OTT SDI RS485 function block serial sensors tab Apply the following settings SDI 12 Master Terminal block f gt Measurement mode M Slave address fo Value no 13 Value no Virtual T
32. num ro de produit unique NPU attribu par le titulaire du certifcat IC 7253A OTTRLS N est pas consid r homologu tout mat riel radio mal tiquet et pour lequel un CAT ou un certificat a t d livr PTL NO DE0003 Signed by Signataire Dirk Brandhorst Blomberg 29 August 2007 Foreign Certification Body FCB PHOENIX TESTLAB GmbH K nigswinkel 10 D 32825 Blomberg Germany Phone 49 0 5235 9500 0 Fax 49 0 5235 9500 10 http www phoenix testlab de 33 OTT MESSTECHNIK GmbH amp Co KG Ludwigstrasse 16 87437 Kempten Germany Phone 49 831 5617 0 Fax 49 831 5617 209 Document number 63 105 001 B E 05 1109 info ott com www ott com
33. operation of the OTT RLS Command Response a a lt CR gt lt LF gt al allccccccccmmmmmm VVVXXXXXX lt CR gt lt LF gt aAb b lt CR gt lt LF gt a lt CR gt lt LF gt aM atttn lt CR gt lt LF gt and after a max of 25 seconds a lt CR gt lt LF gt aDO a lt valuel gt lt value2 gt lt CR gt lt LF gt amc atttn lt CR gt lt LF gt and after a max of 25 seconds a lt CR gt lt LF gt aM1 1 atttn lt CR gt lt LF gt and immediately afterwards a lt CR gt lt LF gt 1 do not use this command if OTT RLS is connected to a datalogger via the 4 operation which is needed for the 4 20 mA interface 2 Dependent on the units set advanced command aosu lt value gt 14 Description Confirmation active a sensor address factory setting 0 Send identification a sensor address 11 SDI 12 protocol version cccccccec manufacturer s identification company name mmmmmm sensor identification vvv sensor version here firmware version XXXXXX additional identification here serial number OTT RLS response O1 IOTT HACH RLS1 10xxxxxx Change sensor address a old sensor address b new sensor address Query sensor address a sensor address Start measurement a sensor address ttt time in seconds until the sensor has determined the measurement result OTT RLS response 025 seconds n number of measured values OTT RLS response 2 a lt CR gt lt LF gt service request
34. t error indicator Read error indicator a sensor address lt value gt error indicator that the OTT RLS outputs an invalid measurement pbbbbbbbb P sign b digit Value range 99999999 99999999 Factory setting 99999999 Set read 4 20 mA interface operating status activated deactivated aOPC lt value gt a lt value gt lt CR gt lt LF gt aOPC a lt value gt lt CR gt lt LF gt A 20 mA interface setting reading the lower limit aOPA lt value gt a lt value gt lt CR gt lt LF gt aOPA a lt value gt lt CR gt lt LF gt 16 Set operating status Read operating status a sensor address lt value gt pb factory setting 1 P sign b digit 0 interface deactivated 1 interface activated Use the command aoPC 1 is helpful if e g an aM com mand unintended has interrupted the continuous operation which is needed for the 4 20 mA interface Set lower limit Read lower limit a sensor address lt value gt pbbbb eee m pbbbb cm pbbbb ee fi P sign b digit before the decimal point e digit after the decimal point Input output without leading zeroes Value range 9999 999 9999 999 Factory setting 0 000 Dependent on the units set a0PF lt value gt Note If the units are subsequently changed aOPF lt value gt the OTT RLS resets the set limit to the factory setting Command Response 4 20 mA inter
35. that need replacing regularly Carry out the following maintenance work at regular frequencies based on the local circumstances Check the OTT RLS for dirt e g thick dewy spider s webs or insect nests can lead to impairment of the measured results In this case carefully clean the sensor if necessary use commercial gentle and non erasing cleaners and a soft sponge At the same time ensure that the setting of the swivel mount does not change Check for obstructions in the measurement beam for example for flotsam or branches of trees and bushes growing into this area In this case remove all obstructions Check the plausibility of the measured values by comparing with a second sensor or with a staff gauge Warning Never open the housing of the OTT RLS exception connection area There are no adjustment or operating elements inside the housing 8 Repair With a device defect use Chapter 9 Troubleshooting to see if you can resolve the problem yourself In case of device defects please contact the repair center of OTT OTT MESSTECHNIK GmbH amp Co KG Repaircenter Ludwigstrasse 16 87437 Kempten Germany Telephone 49 831 5617 433 Fax 49 831 5617 439 repair ott com Warning Only have a defective OTT RLS checked and repaired by the OTT repair center Never make any repairs yourself under any circum stances Any repairs or attempted repairs carried out by the cus tomer will result in the loss of any guarantee righ
36. ts 9 Troubleshooting Sensor does not respond to the SDI 12 interface Fuse in the power supply input side defective Replace fuse Sensor correctly connected to a datalogger with SDI 12 input master Correct connection assignment Polarity of the power supply reversed Correct connection assignment Power supply lt 9 6 V or gt 28 V Correct level of voltage supplied check the length and cross section of the connection cable Is the power supply direct current Only operate sensor with direct current 4 20 mA signal not present Sensor correctly connected to a datalogger or peripheral device to 4 20 mA input check polarity Correct connection assignment A 20 mA current loop correctly supplied through datalogger or OTT RLS internal external supply Correct connection assignment Measured value varies or is not present Sensor front plate dirty Carefully clean the sensor see Chapter 7 Carrying out maintenance work Obstruction in the measurement beam Remove obstructions Sensor aligned at right angles to the water surface Correct sensor alignment Mounting location of the sensor steady e g bridge movement Optimize mounting location Large metal surfaces near the sensor beam e g piling Optimize mounting location Status messages output of interfaces SDI 12 A 20 mA Status message output 0 measured value measured value
37. ty EMC for Short Range Devices 9kHz to 40GHz ETSI EN 301 489 3 V1 4 1 2002 08 EN 61000 4 5 4kV IEC 61000 4 5 4kV Electromagnetic compatibility and Radio Spectrum Matters ERM for Short Range Devices 1GHz to 40GHz ETSI EN 300 440 2 V1 1 1 2001 09 Safety of Electrical Equipment and Industrial Low Voltage Devices EN 60950 1 2001 IEC 60950 1 2001 Radio Standards Specification RSS RSS 210 Issue 7 Radio Frequency Devices FCC 47 CFR Part 15 und den hinterlegten Pr fberichten bereinstimmt und damit den Bestimmungen entspricht and the taken test reports and therefore corresponds to the regulations of the Directive et les rapports d essais notifi s et ainsi correspond aux r glement de la Directive Ort und Datum der Ausstellung Kempten den 2001 0 J 20 Place and Date of Issue Lieu et date d tablissement Name und Unterschrift des Befugten Name and Signature of authorized person Nom et signature de la personne autoris e Peter Fend Director R amp D OTT MESSTECHNIK GmbH amp Co KG Gesch ftsf hrer Dr Ing Anton Felder Pers nlich haftende Gesellschafterin OTT MESSTECHNIK Verwaltungs GmbH Postfach 21 40 87411 Kempten Sitz der Ges Kempten Registergericht Kempten HRB 7687 und HRA 3807 USt ID Nr DE 128 780 710 Steuer Nr 127 171 51206 Ludwigstra e 16 87437 Kempten Tel 49 0 831 56 17 0 Deutsche Bank AG BLZ 700 700 10 Kto Nr 409 0304 00 BIC DEUTDEMM IBAN DE96 7007
38. udinal and lateral axis with the water surface even when the sensor is mounted on a slanted surface A waterproof terminal area can be found under a removable screw cover for attaching the sensor cable If the RS 485 interface is used the length of cable between radar sensor and data logger can amount up to 1000 meters 3 300 ft Using the SDI 12 interface the maximum length of cable is 100 m 330 fi Provided that the unit has been mounted correctly according to the operating instructions the complete radar sensor is flooding proof with IP 67 rating diving bell principle Removable screw cover Cover for transmission and receiving antenna radom Fig 2 Application example 1 Mounting the OTT RLS on a bridge The projection of the sensor beam onto the Water surface is virtually round Phat had ha hal hall hat a Free re Fig 3 Application example 2 Mounting the OTT RLS on an or ris auxiliary construction e g metal A stand with mounting plate Ji yd Distance n a BP 5 Installing the OTT RLS Caution The electrical installation of the OTT RLS may only be undertaken by qualified persons e g a specially trained electrician 5 1 Criteria for selecting a suitable mounting lo
39. urface 5m 16 5 ft 1 06 m 3 5 ft 10m 33 0 ft 2 12 m 7 0 ft 15m 49 0 ft 3 19 m 10 5 ft 20m 66 0 f 4 25 m 14 0 ft 25m 820 ft 5 31 m 17 5 30m 98 0 f 6 38m 21 0 ft 35m 115 0 ft 7 44 m 24 5 ft The diameters given are minimum sizes Where possible select an area free of obstruction that is clearly larger Avoid large metal surfaces near the sensor beam reflections from these surfaces can distort the measurement result The climate specifications in the technical data must be kept to at the mounting location Stilling wells are unsuitable as a mounting location The OTT RLS cannot be used to measure wave height WARNING Danger of explosion due to spark formation and electrostatic discharge The use of the OTT RLS in explosive atmospheres can lead to the danger of ignition of this atmosphere An explosion resulting from this involves the risk of very severe material and personal damage Never operate the OTT RLS in explosive areas e g in sewers The OTT RLS is not equipped with EX protection EXplosion protection 5 2 Notes on power supply The OTT RLS requires a power supply of 9 6 28 V direct current of type 12 24 V DC e g a battery or mains connection with galvanically isolated low safety voltage The OTT RLS is immediately ready for operation after connecting the power supply Warning Secure the power supply cable terminal 1 of the screw terminal strip with a fuse 2 5 ampere reaction time fast
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