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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 04-0124 describe the OTT RLS firmware version V 3.00.0 used in equipment manufactured as of August 2018. They are only valid for OTT RLS radar sensors with the order number 63.109.001.9.2! 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

    Annex A – Connecting the OTT RLS via SDI-12 or RS-485 interface to OTT netDL Annex B – Connecting the OTT RLS via 4 … 20 mA interface to OTT netDL Annex C – Dimensions of wall bracket/position of fixing bores Annex D –...

  • Page 4: Scope Of Supply

    – 2 x 2 x 0,75 mm AWG 19 63.105.025.3.2 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 –...

  • Page 5: Basic Safety Information

    Further information Definition Please note: … Information that prevents potential damage or malfunction on the OTT RLS. 3.2 Explanation of safety information used The safety information used in these operating instructions is classified according to the nature and severity of a particular hazard. The hazard level defined is indicated by the signal word "WARNING"...

  • Page 6: Note The Following For Safe And Trouble-Free Operation

    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 7 Industry Canada Approval This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

  • Page 8: 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 9 Distance Sensor beam Remark: The OTT RLS described in these operating instructions (order number 63.109.001.9.2) has been developed, tested and approved based on European, Canadian and US Codes and Standards. Different device versions for different geographical locations – as available with the predecessor device – lapse without...

  • Page 10: 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 11: 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 (e. g. a battery or mains connection with galvanically isolated low safety voltage).
  • Page 12 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 13: 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 data - logger handbook as you do this. Refer to Figure 6 for the connection assign- ments of the OTT RLS. The maximum length of the connecting cable is 100 m · 330 ft. Recommended wire cross-section: 0.5 mm ·...

  • Page 14: 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 15: Notes On Using The 4

    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 using the RS-485 interface: ➝ refer to Appendix A, option B.

  • Page 16: Sdi-12 Commands And Responses

    – service request 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 operation which is needed for the 4 … 20 mA interface.

  • Page 17: Advanced Sdi-12 Commands

    6.2 Advanced SDI-12 commands All advanced SDI-12 commands begin with an " " 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 Adapter (accessory).
  • Page 18 Input/output without leading zeroes! Value range: –9999.999 … +9999.999 * Factory setting = +0.000 * dependent on the units set (aOPF<value>!) Remark: If the units are subsequently changed (aOPF<value>!), the OTT RLS resets the set limit to the factory setting.
  • Page 19 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 20 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 measured value with command aD0!. If input is unsuccessful, the radar sensor replies with a new service request.
  • Page 21 +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) Remark: If the units are subsequently changed (aOSU<value>!), the OTT RLS resets the set reference value to the factory setting.

  • Page 22: 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 23: 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 24: Note About The Disposal Of Old Units

    Please take into consideration also the national implementation of the EU guideline 2012/19/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 25: 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; measuring time: 20 seconds 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 26 Temperature range Operation –40 … +60 °C · –40 … +140 °F Storage –40 … +85 °C · –40 … +185 °F Relative humidity 0 … 100 % Performance classification in accordance with DIN EN ISO 4373 Measurement reliability Performance class 1 Temperature range Temperature class 1 Relative humidity...

  • Page 27: Annex A - Connecting The Ott Rls Via Sdi-12 Or Rs-485 Interface To Ott Netdl

    Annex A – Connecting the OTT RLS via SDI-12 or RS-485 interface to OTT netDL 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 28 : Upon an instantaneous value request (via LCD dis- play and jog shuttle), the OTT netDL unit sends a com- mand to the OTT RLS unit to start a current measure- ment. Until this measurement is complete, the LCD display refers to the last measured value (or the instan- taneous value last displayed, whichever is the most recent one).
  • Page 29 Remarks: To record the measurements and status information of an OTT RLS, two channels in the OTT netDL are thus necessary. The first channel contains the function block SDI-12 Recorder or OTT SDI RS485 as the input signal. The second chan- nel contains a function block Virtual Sensor (V02) as the input signal.

  • Page 30: Annex B - Connecting The Ott Rls Via 4

    Annex B – Connecting the OTT RLS via 4 … 20 mA interface to OTT netDL Connect the OTT RLS to the OTT netDL IP Datalogger as shown in Figure 12. Take note of the operating instructions for the OTT netDL. Maximum connecting cable length/recommended wire cross-section: depending on the amount of voltage supply.

  • Page 31: 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 32: Annex D - Radio Approval Usa: Grant Of Equipment Authorization

    OTT RLS from our website as PDF file: "www.ott.com/resources"! Annex E – Note on the Declaration of Conformity If necessary, you can download the current version of the "Declaration of Con formity" of the OTT RLS from our website a PDF file: "www.ott.com/resources"! Annex F –...
  • Page 36 OTT HydroMet GmbH Ludwigstrasse 16 87437 Kempten · Germany Phone +49 831 5617-0 +49 831 5617-209 euinfo@otthydromet.com Document number www.otthydromet.com 63.109.001.B.E 03-0124...

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