Ott Hydromet KALESTO Water Level Sensor User Manual Kalesto def

Ott Hydromet GmbH Water Level Sensor Kalesto def

Contents

Users Manual FCC radar sensor leaflet

■■■■■■■23KalestoExamples of useFeaturesInstallation / FunctionMountain stream Sediment loaded riversRiver with debrisThe Kalesto can be fitted easily and quickly, on a bridge, measuringframe, pipeline or ‘extension arm’, for example.The water level is measured contactless from the air⇒ absolute measuring principle.The Kalesto sends radar waves (microwaves) perpendicular to the watersurface. These waves are then mixed with the signals reflected on thesurface.An intelligent signal processor (DSP) calculates the exact distance xbetween the sensor and the surface of the water.Digital measured values, status values and any errormessages present are scanned by means of anexternal data logger via the RS 485 interface.The data logger calculates the water level y out ofthe system length b and the distance x and makesthe stored values available for further processing.Installation at a ‘extension arm’Non contact measuring principle, no damage caused by silt accumulation or debrisSimple, inexpensive installation - no difficult fitting procedure necessary12 V DC power supply; low power consumption enables operation with rechargeable batteries or solarCost reduction due to low maintenance requirementsRS 485 interface (data line up to 1.000 m), optional SDI 12 signal (RS 485 ⇔ SDI 12 converter)Integrated lightning protection fitted as standardMinimal risk of vandalism due to robust, weatherproof housing (IP 68)Example for installation:‘extension arm’KalestoOTT-LOGGSM-Transmissionsolar poweredThe Kalesto radarsensor represents a new type of level measurement for surfacewaterwhich offers many advantages in hydrological field applications.Kalesto is the first level sensor from OTT which does not come in direct contact with thewater. Thanks to its compact design and the non-contact measuring principle, the sensorcan be installed easily and inconspicuously, at no great cost in terms of time or money.With the Kalesto, problems like disruption of measuring operation caused by high-water,silt accumulation, debris, plant growth etc. as well as time-consuming maintenance areeliminated.Cumbersome stilling wells are replaced by an integrated software filter for averaging wavemotion. The measuring signals are transferred to a data logger by means of a RS 485interface, over distances of up to 1,000 m. A power supply of 12 V (rechargeable battery, solar energy) and lowpower consumption enable the device to operate independently in the most remote areas. Kalesto is particularlysuitable for areas where conventional measuring systems cannot be used or where a station needs to be set upquickly and inexpensively.In addition to the conventional applications, the Kalesto is also suitable for use in:Brackish water, drains, rivers where great fluctuations are present– no contact with the measuring mediumIrrigation canals, grachts, falajs– simple installation e.g. on an extension armWater containing large amounts of suspended matter e.g.: mountain streams, wadis, etc.– no silt accummulation– sensor is easily moved e.g. when changes in water cross-section (low flow) occur, compared to stations with agauging shelter and stilling well or inlet pipeShort-term measurements, portable operationEasy to handle - the same sensor can be used for a variety of projects without any need for alterations. The usualinconvenience associated with fixed lengths of measuring tubes, pressure sensor cables or float cable is thus avoided.Weirs, harbour basins, dam walls, recharge damsNot installed in water ⇒ the hydraulic system is not damaged; unaffected by construction and maintenance work.bxy
63.100.000.P.EDI-II/1.109909 KKWOTT MESSTECHNIK GmbH & Co. KGPostfach 21 40 · D - 87411 KemptenLudwigstraße 16 · D - 87437 KemptenTel. ++49 (0)831 / 56 17-0 · GERMANYFax ++49 (0)831 / 56 17-209eMail: info@ott-hydrometry.dehttp://www.ott-hydrometry.deExtensionsTechnical Data4KalestoRadarsensorfor the touchlessmeasurement ofsurfacewater levelAccuracy:± 1 cm (± 0.03 ft) over the completemeasuring rangeTemperature range: - 40 °C ... + 80 °CSensor technology:Touchless measurement of water level usingthe FMCW principle (Frequency ModulatedContinuous Waves)microwaves: 24,125 GHz, 5 mWbeam width: ± 5°dead range: 1.5 m (5 ft)installation distance: min. 1 m (3 ft), e.g.from a wallmeasuring interval: 17 sec. (40 values,creating mean values)Power supply:Nominal 12 V DC 9 ... 15 V DC (accu, solar-or mains supply)– 500 mA active– < 1 µA stand byIntegrated lightning protection (standard):to reduce the possibility of damage causedby over voltage (lightning).RS 485 interface:– digital data transmission up to1.000 m (3,000 ft) distance– Transmission rate 9.600 bpsSignal line:Connection Radarsensor ⇔ data logger.Standard length 3 m (10 ft) (max. 1.000 m /3,000 ft)– Outer-dia = 6 mm incl. connecting clampsSign of registration:Kalesto / OTT LOG - an ideal combinationCircular memory, buffered for up to 400,000 measured values (1 MB)– preselectable sample- / storage intervals– event-driven recordingRS 232 interface for directly connecting the Kalesto HYDROSENS combination to various remote data transmission systems(serial modem / GSM, satellite, radio, etc.).Three additional slots for connecting other sensors (e.g. for conductivity, temperature, precipitation, etc.).CAN-bus for connection to other HYDROSENS modules, such as an OTT-COM communication module– Alarm management when levels either exceed or fall below limit values and connection to an OTT-S measured valueannouncer.Wall-mounted cabinet, IP 64 (190 x 250 x 140 mm W/H/D) for housing the OTT-LOG data loggerOptical interface (infra-red technology)Reading of OTT-LOG stored values on site with a notebook or VOTA multifunctional unit.LCD for clear display of system and sensor parameters (level recorder function).Operating terminalA clearly laid-out operating matrix allows parameters for the data logger and the relevant sensors to be set quickly anddirectly on site using the integrated touch-sensitive keyboard.OTT-LOGMulti-channeldata loggerHYDROSENS«MIDI»Dimensions:Dia:160 mmLength:560 mm incl.mounting threatM 16 x 60 mmWeight:8 kgMaterial:Aluminium body, UV resistant plastic (POM)cover, protection IP 68Measuring range: 1.5 ... 30 m (5 ... 90 ft)Resolution: 1 mm (0.01 ft optional)Small design details may be changed without notice.Delivery program, e.g.:RaingaugesShaft EncodersData LoggersRemote Data TransmissionWaterlevel RecordersCurrent MetersThreadM16Ø 160 mm560 mm

Navigation menu