OTT RLS Operating Instructions Manual
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OTT RLS Operating Instructions Manual

Radar level sensor
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Operating instructions
Radar Level Sensor
OTT RLS

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Summary of Contents for OTT RLS

  • Page 1 Operating instructions Radar Level Sensor OTT RLS...
  • Page 2 These Operating Instructions, version 03-0515 describe the OTT RLS firmware version V 2.00.0 used in equipment manufactured as of January 2015. Please note: When you want to swap an existing OTT RLS manufactured before July 2009 for a new unit, the datalogger configuration should be checked and modified as applicable.

  • Page 3: Table Of Contents

    5.5 Connecting the OTT RLS to any datalogger using an SDI-12 interface 5.6 Connecting the OTT RLS to any datalogger using a 4 … 20 mA interface 5.7 Determining the maximum load resistance at the 4 … 20 mA interface 5.8 Notes on using the 4 …...

  • Page 4: Scope Of Supply

    – 2 x 2 x 0,75 mm AWG 19 OTT RLS bridge mounting 63.105.025.3.2 – 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 63.105.026.3.2...

  • Page 5: Basic Safety Information

    Technical Data section. For further information ¨ see Chapter 11, Technical data. Do not make any changes or retrofits to the OTT RLS. If changes or retrofits 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.

  • Page 6: Introduction

    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 (longitudinal and lateral axis) with the water surface, even when the sensor is mounted on a slanted surface.
  • Page 7 IP 67 rating (diving bell principle). 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.

  • Page 8: Installing The Ott Rls

    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.

  • Page 9: Notes On Power Supply

    The OTT RLS cannot be used to measure wave height. 5.2 Notes on power supply The OTT RLS requires a power supply of 5.4 … 28 V direct current of type 12/24 V DC (e. g. a battery or mains connection with galvanically isolated low safety voltage).
  • Page 10 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 A and B.

  • Page 11: 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 wire cross-section: 0.5 mm ·...

  • Page 12: Connecting The Ott Rls To Any Datalogger Using A 4

    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.

  • Page 13: Notes On Using The 4

    SDI-12 commands.) 5.9 Note on using the RS-485 interface The RS-485 interface is designed and tested to be used with the OTT dataloggers. In such a case, the transmission protocol used within the physical RS-485 interfae is the SDI-12 protocol. Conntecting the OTT RLS to OTT netDL/OTT DuoSens using the RS45 interface: ¨...

  • Page 14: Sdi-12 Commands And Responses

    OTT RLS response = 2 do not use this command if OTT RLS is connected to a datalogger via the 4 … 20 mA interface! OTT RLS would consequently interrupt the continuous measuring Dependent on the units set (advanced command aOSU<value>!)

  • Page 15: Advanced Sdi-12 Commands

    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 "O" 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).
  • Page 16 Input/output without leading zeroes! Value range: –9999.999 … +9999.999 * Factory setting = +0.000 * Dependent on the units set (aOPF<value>!) Note If the units are subsequently changed (aOPF<value>!), the OTT RLS resets the set limit to the factory setting.
  • Page 17 OTT RLS 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 …...
  • Page 18 Output = +9.840 m Note If the units are subsequently changed (aOSU<value>!), 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<value>! a0251<CR><LF> Set reference value a<CR><LF>...
  • Page 19 +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<value>!), the OTT RLS resets the set reference value to the factory setting.

  • Page 20: Carrying Out Maintenance Work

    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).

  • Page 21: Troubleshooting

    Sensor correctly connected to a datalogger or peripheral device to 4 … 20 mA input (check polarity)? ¨ Correct connection assignment. 4 … 20 mA current loop correctly supplied through datalogger or OTT RLS (internal/external supply)? ¨ Correct connection assignment.

  • Page 22: Note About The Disposal Of Old Units

    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.

  • Page 23: Technical Data

    +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 Power consumption of OTT RLS with SDI-12, RS-485 or externally supplied 4 … 20 mA interface Condensation on the front plate of the antenna (Radom) can disturb measuring accuracy...
  • Page 24 Performance classification in accordance with DIN EN ISO 4373 Measurement reliability Performance class 1 Temperature range Temperature class 1 Relative humidity Class 1 EMC limits and radio approvals Version CE: – EMV for Short Range Device ETSI EN 301 489-3 –...

  • Page 25: To Ott Netdl Or Ott Duosens

    Annex A – Connecting the OTT RLS via SDI-12 or RS-485 interface to OTT netDL or OTT DuoSens 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).
  • Page 26 RS-485 interface). Refer to Chapter 5.3 for the maximum connecting cable length and the recommended wire cross-section: Connect the OTT RLS to the IP datalogger OTT netDL or to the OTT DuoSens Compact Datalogger as shown in Figure 11. Take note of the operating instruct ions for the OTT netDL/OTT DuoSens.
  • Page 27 OTT netDL/OTT DuoSens are thus necessary. The first channel contains the function block SDI-12 Master or OTT SDI RS485 as the input signal. The sec- ond channel contains a function block Virtual Sensor (V02) as the input signal.

  • Page 28: Annex B - Connecting The Ott Rls Via 4

    Annex B – Connecting the OTT RLS via 4 … 20 mA interface to OTT netDL or OTT DuoSens Connect the OTT RLS to the OTT netDL IP datalogger or to the OTT DuoSens Compact Datalogger as shown in Figure 13 and 14. Take note of the operating instructions for the OTT netDL/OTT DuoSens.
  • Page 29 Configuring the OTT netDL/OTT DuoSens for OTT RLS with 4 … 20 mA interface Create an OTT netDL/OTT DuoSens channel including a U/I/Pt100/… functional block (Analog sensors tab). Apply the following settings: Fig. 15: Setting operating parameters of the OTT netDL function block I 4-20 mA.

  • Page 30: Annex C - Dimensions Of Wall Bracket/Position Of Fixing Bores

    Annex C – Dimensions of wall bracket/position of fixing bores 35 mm · 1.38" 0.28" 23 mm 0.91" 67.5 mm · 2.66" 152 mm · 5.98"...

  • Page 31: Annex D - Radio Approval Usa: Grant Of Equipment Authorization

    Annex D – Radio Approval USA: Grant of Equipment uthorization...

  • Page 32: Annex E - Declaration Of Conformity

    Annex E – Declaration of Conformity...

  • Page 33: Annex F - Declaration Concerning To The Health Ot The User

    Annex F – Declaration concerning to the health ot the user...
  • Page 36 OTT Hydromet GmbH Ludwigstrasse 16 87437 Kempten · Germany Phone +49 831 5617-0 +49 831 5617-209 Document number 63.108.001.B.E 03-0515 info@ott.com · www.ott.com...

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