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    • netDL Templates - Configuration - for OTT Data Logger Operating Program
      Templates for netDL Configuration shown in the OTT netDL configuration videos
    • OTT netDL - Configuration - OTT Pluvio² via OTTSDI - Video EN
    • OTT netDL - Configuration - OTT PLS via OTTSDI - Video EN
    • OTT netDL - Configuration - OTT SE200 via SDI-12 - Video EN
    • Hydras 3LT Software
    • OTT netDL - Driver installation - Video EN
    • OTT netDL - First Configuration Steps - Video EN
    • Brochure - OTT Ground water measurement
    • Whitepaper - OTT ecoLog Guidance: Remote communication via mobile networks
    • White Paper - OTT ecoLog Guidance: Remote communication via mobile networks
    • Technical Note - Sensor Selection Guide Groundwater
    • Groundwater

      Measuring groundwater level or depth-to-water is critically important for identifying long term trends, including declining water levels, saltwater intrusion, seasonal variations, aquifer recharge, artificial aquifer storage and recovery, and level...

    • OTT Water Logger Operating Program
    • USB interface drivers - OTT IrDA-Link USB - EN
    • Technical Note - Sensor Selection Guide Surface Water
    • OTT MF pro - Hessenhauhoehle - Video DE-EN
    • Surface Water

      Measuring water quantity and quality in surface water (open channels, rivers, reservoirs, lakes, and estuaries) is one of the foundations of hydrological monitoring and has been a focus of OTT Hydromet since its first  water current meters were...

    • Brochure - OTT Water level measurement
    • Meteorological Technology International Article
    • OTT MF pro Video - EN
    • OTT ecoLog 500 Video - EN
      OTT ecoLog 500 Video
    • OTT PLS - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Hydrolab Operating Software
      Hydrolab Operating Software 64 bit install
    • Urban Hydrology

      Urban Hydrology deals with the specific aspects of the hydrological cycle in urban and industrial settings. This includes all natural water flows as well as the consideration of precipitation, storm water, groundwater, rivers, and lakes, but also the...

    • Flood Warning

      While some areas are more prone to flooding than others, the establishment of early warning systems near every major river or water body provides important information that helps protect property and lives. Of course, the most effective flood warning...

    • Whitepaper: Turbidity measurements
      Turbidity Whitepaper
    • Mining

      Ensuring that pollutants from mining activities do not enter surrounding natural water bodies is a key issue in environmental monitoring and regulatory compliance. Hydrolab multiparameter sondes can measure a variety of parameters pertaining to...

    • Hydropower

      Monitoring the impact of Hydropower plant activities on water bodies can be important for regulatory compliance and modeling purposes.Hydrolab instruments can measure total dissolved gas (TDG) levels around Hydropower activities and both Hydrolab and...

    • OTT ADC Video - EN
    • Modern monitoring network in the Indian Ocean

      Three public authorities in Sri Lanka are responsible for various tasks in water management and they all depend on hydro-meteorological data. However, the existing monitoring network was in poor condition and reliable, up-to-date measurement values...

    • Flow & Discharge

      Measuring water flow and discharge to determine the amount of water flowing through an open channel is critical for predicting water availability and flood events, allocating watering, and more. OTT Hydromet has been a leader in flow meter...

    • Hydrolab Operating Software
      Hydrolab Operating Software 64 bit install
    • OTT Universal Messflügel C31 - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • News and Pressroom

      In recent years the development of flood warning systems has benefited from advances in sensor, datalogger and communications technology. The expansion of mobile telecommunications has meant that more locations now benefit from increased...

    • OTT Pluvio² - USB interface driver - EN
    • OTT Pluvio² / OTT Pluvio² S / OTT Pluvio² L - Operating program
    • Hydrolab HL4 Overview Video
      Hydrolab HL4 Overview Video
    • Whitepaper: QA QC (Quality assurance and control) in hydrometry
    • OTT MF pro Basic User Manual - EU version
    • OTT CTD - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT CBS - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT Groundwater Sensor Selection Guide
    • Meteorology

      High-accuracy precipitation data is used for watershed monitoring, airport and highway transportation forecasts,  general weather forecasting,  and Doppler radar ground truthing. OTT Hydromet offers a variety of precipitation measurement...

    • OTT Orpheus Mini - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT netDL - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT MF pro Basic User Manual - International version (non EU)
    • OTT RLS - GRANT OF EQUIPMENT AUTHORIZATION
    • OTT RLS - Declaration concerning to the health of the user
    • OTT MFpro - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Whitepaper: OTT MF pro
    • OTT PLS-C - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Application Note – OTT netDL 1000 with IP Camera D-Link DCS 7110
    • Oil & Gas

      Monitoring natural water bodies surrounding oil and gas drilling activities like hydraulic fracturing is a key issue in environmental monitoring and regulatory compliance. Hydrolab multiparameter sondes can measure a variety of parameters pertaining...

    • ecoLog 1000 - list of approved countries EN
    • Agriculture & Irrigation

      OTT Hydromet sensors can provide key information on trend identification and regulatory compliance for water quality and quantity parameters around agriculture and irrigation activities. OTT water level and flow sensors can measure the discharge of...

    • TechTip: OTT netDL and Pluvio²
      How to use the OTT netDL data logger together with the Pluvio² precipitation sensor
    • OTT TRH - Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT TRH - Diagramme Messgenauigkeit | Measurement Accuracy Diagrams
    • OTT TRH - Kurzanleitung | Quick Reference | Notice d'utilisation simplifiée | Instrucciones abreviadas
    • OTT SLD - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Prodis 2 - Application software - EN
    • OTT Parsivel² - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Leaflet Hydromet Cloud EN
    • OTT netDL - XML Schema Definition - EN
    • OTT netDL - USB interface driver - EN
    • OTT netDL Firmware - EN
    • Supplement to operating instructions Pressure Probe OTT PLS – Plug-in pressure probe cable
    • Operating instructions Pressure Probe OTT PLS
    • Leaflet - Pressure Probe OTT PLS
    • Hydrolab HL4 Comm. Module Manual
    • OTT Data Logger Operating Program
    • OTT SVR 100 - Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT Z400 - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT Pluvio² L - Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT Pluvio² S - Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Application Note – OTT netDL 1000 with IP Camera D-Link DCS 7110
    • Leaflet - Mulitchannel IP-Data Logger OTT netDL 500/1000
    • OTT QReview - EN
    • Village installs local flood warning system | Oxton - Nottinghamshire

      A village in Nottinghamshire has installed an advanced river monitoring system from OTT Hydrometry that automatically issues text (sms) message alarms so that residents can implement flood protection measures. Oxton has a history of flooding problems...

    • White Paper - OTT netDL Datalogger - Industrial Communication
    • OTT ADC - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Operating instructions IP Datalogger OTT netDL 500 OTT netDL 1000
    • Whitepaper - OTT netDL Datalogger - Industrial Communication
    • Video Hydrolab HL4/HL7 - Turbidity - Calibration Tutorial Series - EN
    • Hydrolab HL4 Sensor Manual
    • Remote Water Quality Monitoring in South Africa

      Situated in the Mpumalanga province of South Africa, the Xstrata Coal South Africa (XCSA) runs several open cut and underground mining operations producing thermal coal.To ensure their mining operations do not affect the surrounding natural water...

    • Video Hydrolab HL4/HL7 - Dissolved Oxygen - Calibration Tutorial Series - EN
    • Video Hydrolab HL4/HL7 - Temperature - Calibration Tutorial Series - EN
    • Hydrolab HL4 Manual
    • Video Hydrolab HL4/HL7 - pH - Calibration Tutorial Series - EN
    • OTT Parsivel - Application software ASDO
    • Video Hydrolab HL4/HL7 - Conductivity I Calibration Tutorial Series - EN
    • OTT Parsivel² - USB interface driver - EN
    • OTT ecoLog 1000 Toolbox
    • OTT ecoLog 1000 – Available SMS commands
    • Leaflet - Distrometer /Present Weather Sensor OTT Parsivel²
    • OTT ecoLog 800 - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Dam Monitoring in South Africa

      The purpose of the Komati River Basin Development Project is to ensure the availability of water in order to promote economic development in the region. OTT’s part of the project was to supply dataloggers for the monitoring of the river flows into...

    • Operating instructions Groundwater Datalogger OTT ecoLog 1000
    • OTT ecoLog 800 - Firmware - EN
    • OTT ecoLog 1000 - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Leaflet - Compact Bubble Sensor OTT CBS
    • Operating instructions Bubble Sensor OTT CBS (current version)
    • Operating instructions Bubble Sensor OTT CBS (Version: 04-0211)
    • Installation instructions Air drying unit for Bubble Sensor OTT CBS
    • Continuous Discharge Monitoring in Mecklenburg - Germany

      The Wallensteingraben was originally constructed as a channel and is almost 20 km long. In the context of implementing the European Water Framework Directive, goals include improving ecological passability. At the same time a measurement site for the...

    • OTT ecoLog 800 3G - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Bedford Flood Gate Control

      Bedford Borough Council have been given responsibility for the management and control of 2 flood gates on the Great Ouse in the center of Bedford. OTT Hydrometry were successful in the tender process and were commissioned to install a monitoring...

    • Operating instructions Present Weather Sensor OTT Parsivel² (without screen heating)
    • Brochure - Groundwater level logger with remote data transmission 4G/2G OTT ecoLog 1000
    • Operating instructions Present Weather Sensor OTT Parsivel² (with screen heating)
    • Operating instructions Groundwater Datalogger OTT Orpheus Mini
    • Leaflet - Small Current Meter OTT C2
    • Operating Instructions Pressure Probe with Conductivity Sensor OTT PLS-C
    • Operating Instructions Parsivel Application Software ASDO
    • Brief instructions Groundwater Datalogger OTT Orpheus Mini
    • Mounting instructions Bubble pot EPS 50
    • Precipitation Type Specific Radar Reflectivity Rain Rate Relationships – Article
    • Detection of Potentially Hazardous Convective Clouds – Article
    • Ireland Groundwater Monitoring Program

      To fulfill the EU Water Framework Directive (WFD) requirements, a groundwater monitoring program was established by the Environmental Protection Agency of Ireland. This program focuses on providing information to assess the environmental status of...

    • Harris County Flood Warning System

      The Harris County Flood Control District in Texas was created in 1937 as a response to the devastating floods that struck the region between 1929 and 1935. The District's boundaries protect 3.7 million people and include the city of Houston....

    • Well monitoring for a water supplier

      The municipality company, in city of Luebek, Germany, provides potable water for approximately 120,000 households, all pumped from more than 30 wells.  These wells have water levels as deep as 160 meters.  The water levels of these groundwater wells...

    • Precipitation Measurement in East Tyrolia High Mountains

      The Defereggen Valley's remote location is in the middle of the East Tyrolean high mountain valleys in the Alps. Due to the remote location, extreme weather conditions, and lack of infrastructure, it had not been possible to install an official...

    • Rosenheim – Discharge Measurement under challenging conditions

      The measurement station in Bad Aibling Triftbach, which is part of the state measurement network operated by WWA Rosenheim on behalf of the Bavarian State Office for the Environment, has been in successful operation for some time now. In 2018 this...

    • OTT ecoLog 1000: Data Formats
      V4
    • Monitoring ditch water quality using OTT ecoN, Hydrolab HL4 and XLink 500

      The RIVM in the Netherlands is using the OTT ecoN and the Hydrolab HL4, connected to an XLink 500 datalogger, to monitor the temporal variation of nutrients in ditch water. The data is sent to Hydromet Cloud. The goal of this project (WaterSNIP) is...

    • Control of Dredging Works in the Danube River - Austria

      The Austrian waterway management has introduced an automatic system to monitor a series of barges, which calculates the dredged material as a basis for handling invoices of the dredging companies. Before converting to a remote data transmission...

    • Flood protection program Zulawy, Gdansk – Poland

      Zulawy is a region which is located in the delta of Vistula River in north Poland. The area of Zulawy is about 175 000 ha, almost 26% of which is situated below sea level. Because of that, Zulawy has an impressive infrastructure – kilometers of...

    • CBS – Firmware - EN
    • Groundwater Monitoring around Hydraulic Fracturing Sites in Colorado

      Hydraulic fracturing or ‘Fracking’ has become more prevalent and controversial in the US in recent years. More than 90 percent of new wells in the US are completed using this method. While it is endorsed by some as a game-changer that promises an...

    • Operating instructions Groundwater Datalogger OTT ecoLog 800 (3G)
    • Leaflet - Groundwater datalogger OTT Orpheus Mini
    • OTT ecoLog 1000 Control File FTP
      V2
    • Coastal & Estuary

      Measurement of water quality in coastal regions and estuaries is critical in the characterization of hypoxic ‘dead zones’ as a result of nutrient loading and algal blooms in the water bodies. Sediment loading analysis through turbidity measurement is...

    • Leaflet - Groundwater Datalogger with conductivity measuring cell and integrated GSM/GPRS unit OTT ecoLog 800
    • New monitoring network for Scottish ports

      In the past, the ferries operating off the west coast of Scotland would have to sail to port to assess weather and tidal conditions would allow them to berth alongside the pier.  In efforts to save time, fuel and costs, the Caledonian Maritime Assets...

    • OTT MF pro Operating Instructions
    • Leaflet - Groundwater Datalogger with Conductivity measuring cell - OTT CTD
    • OTT Hydromet Water Level Solutions

      Pressure sensor with built-in data logger manages and stores pressure, depth to water, water level, and/or temperature measurements at programmable intervals.  Pair the Orpheus Mini with the OTT ITC for remote data acquisition. High...

    • Operating instructions Electric contact gauge KL 010/KL 010 TM
    • Nutrient Monitoring

      Continuous monitoring of nutrient levels provides crucial information about daily, seasonal and event based changes in water quality conditions, and can be a strong indicator on the overall health of the water body.  In recent years, monitoring of...

    • Operating Instructions Universal Current Meter C31
    • OTT KL010/TM/TMC CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT CTD – Firmware - EN
    • Tech Tipp: OTT netDL with HL4 and HL7 bin files
      Tech Tipp: OTT netDL with HL4 and HL7 bin files
    • 49 stations along the Mekong River - Cambodia - Vietnam - Laos - Thailand

      The Mekong River Commission Secretariat (MRCS) is a Basin Management Organization formed through the joint-cooperation of Cambodia, Lao PDR, Thailand and Vietnam. China and Myanmar are also partners with the MRCS. The organization aims at...

    • OTT ecoLog 500 - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • Guide - OTT HydroSystems
    • Operating instructions Contact gauge KL 010 TCM
    • OTT SVR 100 Product Video
    • Operating InstructionsSmall Current Meter C2
    • MF pro Firmware - EN
    • Leaflet - Electric contact gauges Series KL 010
    • Leaflet - Magnetic -inductive current meter OTT MF pro
    • OTT Pluvio² S – Firmware - EN
    • Operating instructions - Groundwater Datalogger OTT CTD
    • OTT ecoLog 500/800 installation accessories
      OTT ecoLog 500/800 installation accessories
    • Orpheus Mini – Firmware - EN
    • OTT Pluvio²L in use for a research project in Antarctica

      Close to McMurdo Station in Antarctica, researchers from the University of Colorado, Boulder and the National Center for Atmospheric Research are investigating methods to measure the accumulating snowfall in the harsh Antarctic environment. These...

    • Assembly instructions; Maximum level gauge G1
    • OTT Pluvio² – Firmware - EN
    • OTT SLD - Firmware - EN
    • Reservoir Aabach Germany - Continuous monitoring of contact pressure

      With a total volume of approximately 20 million cubic meters of water and a length of 450 meters, the reservoir supplies drinking water for 200.000 people in the area and fulfils also an important  function in the flood protection there. With the new...

    • OTT ecoLog 500 - Firmware - EN
    • OTT ecoLog 500 3G - CE Konformitätserklärung | Declaration of Conformity | Declaration de Conformité
    • OTT SVR 100 - Firmware - EN
    • Tech Tip: Alerts using OTT netDL
    • Operating instructions Groundwater Datalogger OTT ecoLog 500 (3G)
    • Application OTT netDL 1000 IPCam HIKVISION
      V4
    • OTT PLS - DIN EN ISO 4373 Declaration of Conformity | Declaration de Conformité | Konformitätserklärung
    • OTT CBS CSI Specifications
    • OTT RLS CSI Specifications
    • Groundwater Monitoring Underpins Management of the Great Fen, UK

      In 2001, five organizations came together to set out a vision for the Great Fen, with the aim of providing a more sustainable future for the area. In many respects, this work focuses on restoration by managing water levels, so a network of monitoring...

    • Operating Instructions Precipitation gauge OTT Pluvio² S
    • Operating instructions Radar Level Sensor OTT RLS (63.108.001.9.2)
    • Video - Conductivity Sensor calibration - EN
    • Operating instructions Radar Level Sensor OTT RLS (63.109.001.9.2)
    • Operating Instructions Surface Velocity Radar OTT SVR 100
    • Guide - OTT Standard Systems - EN
    • Weather stations for the 2014 Winter Olympic Games in Sochi

      For real-time meteorological data at the XXII Winter Olympic and XI Winter Paralympic Games in Sochi from February–March 2014, 29 specialized automatic meteorological stations (AMS) were installed in the areas close to the Olympic sport venues from...

    • Brochure - ecoLog 1000 - EN
    • Precipitation monitoring in the Sierra Nevada - Spain

      This OTT Pluvio² precipitation measuring station “Tajos de Breca” is situated 2470 meters (8103.67 feet) above sea level at the southern slope of the Sierra Nevada for long term meteorological data collection. The station forms part of a measuring...

    • Operating instructions OTT cable way for hydrological surveys
    • OTT SVR 100 - FAQ
    • SLD EasyUse - EN
    • RLS – Firmware - EN
    • Whitepaper - OTT SVR 100: Surface Velocity Radar for Measuring Open Channel Flow
    • Leaflet - Side Looking Doppler OTT SLD
    • Whitepaper: OTT CBS - Compact Bubbler Sensor for water level measurements
    • Communication Module Wiring - 6748600, 9039600, 9039700, 9039800, 9312900
    • HL Series Sensors - Bedienungsanleitung | User Manual | Manuel d'utilisation | Manual de usuario
    • HL Series Sonde - Bedienungsanleitung | User Manual | Manuel d'utilisation | Manual de usuario
    • Operate the Hydrolab SDI-12 / Modbus / RS232 TTY Communications Module (HL Series Sonde)
    • OTT RLS Overview Video
    • Operating instructions Precipitation Gauge OTT Pluvio²
    • Leaflet - Groundwater Datalogger OTT ecoLog 500
    • Leaflet - Compact weighing precipitation gauge OTT Pluvio² S
    • Leaflet - Radar sensor non-contact water level measurement OTT RLS
    • Leaflet - OTT Cable Way Systems
    • OTT PLS CSI specifications
    • Operating instructions Shaft Encoder OTT SE 200
    • Software Description Application Software OTT Hydras 3 net
    • Leaflet - Shaft Encoder for continuous measurement of water level OTT SE 200
    • Anwenderforum

      Accurate flow and discharge measurement has been a core competency of OTT Hydromet since we created our first flow meter in 1875. Choose from a variety of either portable or stationary measurement options using different measurement...

    • Compatibility of OTT Hydromet software with Windows operating systems
    • Monitoring underground water resources in Brazil

      The Coca-Cola FENSA plant in Mogi das Cruzes is responsible for bottling mineral water supplied from two ground water sources. The plant is a benchmark for environmental sustainability projects. With this pioneer project the Mogi das Cruzes plant was...

    • Buoy-based temperature profiling in the Bavarian Lakes

      In summertime a temperature stratification occurs in deep lakes – the surface water is warm, but deep down the water is cold.  This has considerable influence on the nutrient balance and the biological habitat in these lakes. Due to generally higher...

    • Flood Warning Station at Kriebstein, Saxony - Germany

      As flood-warning station and hydrometric base station with a catchment basin of 1754 km2 , reliable data monitoring is extremely important for the hydrological balance of Freiberg and for the whole area around the Mulde. The power plants, located up...

    • Satellite telemetry supports flood protection in Scotland

      Scotland's water is famed worldwide, and performs vital roles both in tourism and in the production and branding of some of the country’s greatest exports. Water resources are monitored closely by the Scottish Environment Protection Agency (SEPA) to...

    • landingpage-stromwater

      Accurate flow and discharge measurement has been a core competency of OTT Hydromet since we created our first flow meter in 1875. Choose from a variety of either portable or stationary measurement options using different measurement...

    • OTT Hydromet Water Flow Solutions

      Velocity measurements from up to nine cells are used, along with measured water level, to calculate discharge either internally in the OTT SLD or externally in a data logger.Equipped with two horizontal ultrasonic transducers "looking...

    • Remote location requires minimum concept

      A leading power supply provider in Austria took on the project of monitoring water levels at a power plant in Montenegro, in two remote locations where no infrastructure is available for installation. On top of that, site visits could only occur...

    • Weather data for nautical information system

      In Lemwerder, Germany at the Weser River, wind direction and speed are measured and transferred in 60 second intervals via the OTT netDL 1000.  The data is transmitted, wireless, over a distance of 600 meters to the radar tower in Ritzenbuettel,...

    • Discharge Measurement Deep Within a Cave

      Research is currently being conducted in the Hessenhau cave, located in southern Germany. The cave is the deepest known within the Swabian Alps at 144m (472 ft) and has a stream running through it that connects it to other caves within the area. ...

    • E.ON Power Plant Nuremberg

      Water level, water flow and discharge are monitored at two inflows of the E.ON electricity power plan Franken I, using the OTT SLD, with horizontal Doppler-flow sensors. The purpose of this measurement is to optimize the operation of the plan which...

    • Water Quality Solutions Overview Video
    • Discharge measurement at the river "Große Roeder" in Saxony - Germany

      Due to the seasonally strong weed growth and low flow during low water periods the measurement of water level and flow at the measurement site "Kleinraschuetz“ was rather distorted. It had to be corrected by putting in additional manpower for manual...

    • 65 new OTT ecoLog 500 stations in Denmark for a crop cutting research project

      The associated sets of water level and water flow data, together with detailed records of the physical conditions, can form the basis for calculating the specific effects of the crop cutting on the water level and the manning number (expressing the...

    • Data Sheet - OTT Pluvio 2L - EN
    • OTT ecoN Converter - Leaflet
    • Precipitation measurement in high mountains - Aosta Valley

      Precipitation monitoring in remote areas without infrastructure was thought to be impossible in Aosta Valley, Italy. All the more challenging was the task to install a measuring site on the Peak CIMO Blanche with its height of 3000 meters (just shy...

    • Data Sheet - OTT Pluvio 2S - EN
    • Water quality monitoring at the "Klingenberg" dam in Saxony, DE

      The Klingenberg dam is located in the Free State of Saxony and serves the drinking water supply of Dresden and large parts of the former Weißeritzkreis area. Besides, it contributes to flood protection and, to a small extent, to energy generation. ...

    • New network of weather stations in Sheffield

      OTT HydroMet is installing fifteen automatic weather stations as part of the University of Sheffield’s Urban Flows Observatory, which is led by the Departments of Civil and Structural Engineering, and Automatic Control and Systems Engineering (ACSE)....

    • Mine Water Treatment Relies on Borehole Loggers

      For the last nine years, Severn Trent Services, has managed a contract for mine water treatment across the Coal Authority estate, including 73 mine water treatment schemes in England, Scotland and Wales. These schemes take the form of three types:...

    • Data Sheet - OTT PLS-C - EN
    • OTT Water Level Logger Used in Small Irrigation Channels in Valencia, Spain

      The irrigation sector in the Valencia area was forced to start measuring the levels in their channels. For this a simple system was required and a very discrete installation needed due to high chances of vandalism and low budgets available from the...

    • Getting Started HYDRAS 3
    • Application Note - OTT netDL 1000 // IP camera HIKVISION DS-2CD2623G2-IZS
    • Product Guide - OTT PLS 500 - EN
    • Brochure - OTT netDL 500/1000- EN
    • Brochure - OTT PLS 500 - EN
    • OTT PLS 500 vs OTT PLS - EN
    • OTT CBS - DIN EN ISO 4373 Declaration of Conformity | Declaration de Conformité | Konformitätserklärung
    • OTT ecoN - Data Sheet
    • OTT Maximum Level Gauges

      The OTT Maximum Level Gauge is a cost-effective measuring device that indicates the maximum water level by tidal waves or other level fluctuations over a color marking. It is based on the simple principle of color marking. The threshold level is used...

    • Operating instructions Signal Counter Set OTT Z400
    • Z400 - Application Software - EN
    • OTT RLS - DIN EN ISO 4373 Declaration of Conformity | Declaration de Conformité | Konformitätserklärung
    • OTT Hydras 3 net Hosted hosting services gtcs
      OTT Hydras 3 net Hosted hosting services gtcs
    • OTT C31

      The OTT C31 Universal Current Meter is designed for flow velocity measurements in combination with hand-held wading rods or cable suspended from a bridge or boat. Different accessories like sounding weights (middle pieces), sounding reels (winches),...

    • Whitepaper - OTT SVR 100: Surface Velocity Radar for Measuring Open Channel Flow
    • Leaflet - Multiparameter-Sonde Water Quality Hydrolab HL Series
    • Application Notes: OTT SVR 100 - Discharge measurement in Rosenheim

    • OTT ecoLog 1000: Secure data transmission using HTTPS - info sheet
      V1
    • Leaflet - Compact systems for meteorological applications OTT MetSystems
    • Leaflet – Precipitation gauge using the weighing principle OTT Pluvio² L
    • Flood Water Protection in the City of Buenos Aires

      The Arroyo Mendrano is the second largest channeled stream of water running through Buenos Aires. In case of heavy rainfalls it overflows its banks and causes considerable material damage. When the retention basin which had been especially built to...

    • OTT C2

      The OTT C2 small current meter for discharge measurements for shallow waters in small rivers, channels, laboratories and river models. Proven a thousand times to measure reliably flow velocities from 0.025 up to 5 m/s. Available for rod measurements...

    • Technical Note - OTT RLS Installation
    • OTT PLS500 instruction manual
    • Operating Instructions Precipitation gauge OTT Pluvio² L
    • Declaration of Conformity - OTT PLS 500 - EN
    • How to ensure real-time access to Antarctic tide data

      The SATGN is maintained and operated by the National Oceanography Centre, which is the UK centre of excellence for sea level monitoring, coastal flood forecasting and the analysis of sea levels. It is the focus for marine water level research in the...

    • OTT ecoN - Product Guide
    • OTT ecoN - Brochure
    • Brief instructions - Acoustic, digital current meter OTT ADC
    • OTT Contact Gauges

      OTT Contact Gauges are essential for manual measurements of depth to water, temperature, and conductivity in groundwater. The drum is held by a stable frame and is easy to carry. It is very smooth, so that you can effortlessly drain and haul the...

    • All-weather meteorological stations in the Carpathian Mountains - Hungary

      For a development project on the Hungarian hydrometrical network operated by the Hungarian Meteorological Service (OMSZ), 141 new meteorological measuring stations were installed across the country. The all-weater climate stations have to provide...

    • Data Sheet – OTT ecoLog 1000 - EN
    • OTT ecoN Modbus to SDI-12 Converter

      The OTT ecoN converter translates the Modbus protocol for the OTT ecoN nitrate sensor.

      Be continuously informed
      Receive continuous information on the current operation mode and power supply, thanks to the converter’s four status LEDs.


      Enjoy remote...

    • ADC – USB interface driver - EN
    • Operating instructions - Acoustic, digital current meter OTT ADC
    • Leaflet - Acoustic Digital Current Meter OTT ADC
    • OTT Hydro-Meteorology Standard Systems Guide
    • OTT MetSystems

      The rugged lockable control cabinet of the OTT MetSystems is designed for automatic meteorological stations. it is equipped with components for power supply as well as with the IP datalogger OTT netDL for saving and remotely transferring...

    • OTT RLS - Radar Level Sensor

      The OTT RLS is a non-contact radar level sensor with pulse radar technology. The OTT RLS offers a large measurement range with a small blanking distance and narrow beam width and it easily connects to most dataloggers. The RLS has extremely low power...

    • OTT ecoLog 500 Water Level Logger

      The OTT ecoLog 500 is a complete system for water level and temperature measurement. Designed for full deployment inside groundwater wells as well as surface water applications, the OTT ecoLog 500 offers data and alarm message transmission options...

    • OTT Pluvio² S

      The OTT Pluvio² S weighing precipitation gauge measures the intensity and cumulative precipitation in a broad measuring range from 0 to 3,000 mm/h.

      The professional rain gauge is a further development of the tried-and-tested OTT Pluvio², with...

    • OTT ecoLog 800 Water Level Logger

      The OTT ecoLog 800 is a self-contained system for measurement of water level, temperature, and conductivity in groundwater and surface water applications. The ecoLog 800 features a complete in-well solution for groundwater measurement and flexible...

    • OTT PLS-C

      The OTT PLS-C measures water conductivity, level, and temperature in both surface and groundwater applications with a robust ceramic pressure cell and 4-electrode conductivity cell. Its extremely low power consumption makes it ideal for long-term...

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    • Legacy product - OTT ADC

      The OTT Acoustic Digital Current meter (ADC) delivers consistently accurate results with the most advanced acoustic technology available for point velocity measurement. Designed specifically for in-stream velocity measurement, the ADC features a...

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    • OTT HydroSystems

      OTT HydroSystems offer a decisive price advantage compared to individual configured systems. The IP-enabled and highly energy-efficient datalogger OTT netDL is the core of the system. Several SDI-12 sensors may be connected to the rugged logger, as...

    • OTT CBS - Compact Bubbler Sensor

      The OTT CBS is a compact, accurate, and low power bubbler sensor for surface water level monitoring. The OTT CBS meets or exceeds USGS standards for accuracy, and will not drift over time. It features outputs for SDI-12 and 4...20 mA.

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      Demo Days: ecoLog 1000
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    • OTT Hydras 3 Basic

      OTT Hydras 3 Basic communication software is a convenient and user-friendly solution for the configuration of OTT dataloggers, for downloading measured values using a notebook, and for automatic remote data collection via modem. Hydras 3 Basic is...

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      Bin-Files Tech-Tipp netDL Alarmfunktionen
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    • OTT Pluvio² L – Weighing Rain Gauge

      The OTT Pluvio² L is an all-weather precipitation gauge that uses superior weight-based technology to measure the amount and intensity of rain, snow, and hail. Developed in conjunction with industry-leading meteorological services, the OTT Pluvio² L...

    • Contact-less and maintenance-free OTT SVR 100

    • OTT Z400

      The digital counter OTT Z400 is a time-saving device for flow measurements with hydrometric current meters. It automatically records the number of propeller revolutions by counting the impulses. Besides, it can output the velocity of flow immediately...

    • OTT Staff Level Gauges

      Staff gauges from OTT as basic equipment for every level / discharge gauging station. Depending on whether the staff gauge is to be mounted vertically or on a slope, you can choose between vertical or inclined staff gauges. Furthermore the staff...

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    • OTT MF pro - Water Flow Meter

      The OTT MF Pro is a user-friendly, low maintenance electromagnetic current meter for cost-efficient in-stream discharge measurement.

      The OTT MF pro saves time in the field by automatically calculating discharge and its electromagnetic sensor head is...

    • OTT SVR 100

      OTT SVR 100 is a simple, non-contact, compact surface water velocity radar sensor. Designed for measuring flow in open channels and rivers where reliable velocity data is required continuously, during floods or periods of high concentrations of...

    • OTT PLS 500 - Pressure Level Sensor

      Building on years of experience with the robust and accurate OTT PLS, the PLS 500 water level monitoring solution adds innovative metadata and internal sensors to remotely verify device performance providing peace of mind for long term deployment. 

    • OTT PLS - Pressure Level Sensor

      The OTT PLS measures water level, depth to water, or pressure by means of an integrated controller and ceramic pressure-measuring cell. Design features such as multiple communication outputs (SDI-12 or 4 ... 20 mA), stainless steel housing, and a...

    • OTT Parsivel² - Laser Weather Sensor

      The OTT Parsivel² is a modern laser disdrometer for comprehensive measurement of all precipitation types. The Parsivel² captures both the size and speed of falling particles, classifying them into one of 32 separate size and velocity classes. The raw...

    • OTT Pluvio² - Weighing Rain Gauge

      The OTT Pluvio² is an all-weather precipitation gauge that uses superior weight-based technology to measure the amount and intensity of rain, snow, and hail. Developed in conjunction with industry-leading meteorological services, the OTT Pluvio² ...

    • OTT Cable Way Systems

      OTT cable way systems provide safety where mobile discharge measurements in water or from a bridge cannot be performed. They are driven mechanically or electrically and are available for span lengths of up to 160 m. The systems are DEKRA type...

    • OTT netDL Data Logger

      The versatile OTT netDL 500 and 1000 data loggers were developed specifically for use in hydrology and meteorology stations. In addition to recording data, the data loggers are extremely low power and offer flexible data transfer options via the...

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    • OTT Water Quality Buoy

      The OTT measuring buoy is specially designed for operation in combination with the HYDROLAB HL7 or HL4 multiparameter sondes. It is equipped with a data acquisition and remote data transmission unit as well as a mains-independent solar power supply....

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    • OTT ecoLog 1000 Water Level Logger

      The OTT ecoLog 1000 is a self-contained, robust surface and groundwater level logger for measuring water level, temperature, and conductivity. It provides reliable system up-time and accurate measurements while avoiding data gaps. It’s simple to...

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    • OTT Hydras 3 net

      The Hydras 3 Application Software is designed for data management in hydrometrical and meteorological monitoring networks. Hydras 3 offer a practical, user-friendly software structure for the collection, processing, interpretation, evaluation and...

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    • Water Quality Monitoring and Weather Data at Pampulha Lake-Brasil

       In 2010, OTT Hydromet's partner in Brasil,  Hexis began working with CETEC. This resulted in the installation of a buoy, equipped with an automatic profiling system, in early 2013. The project’s objective is the continuous monitoring of the lake’s...

    • Hydrolab HL4 Multiparameter Sonde

      The Hydrolab HL4 is the next generation multiparameter water quality sonde from OTT Hydromet.  Know the instrument is working correctly and troubleshoot quickly. Streamline calibration tasks and produce valid, scientifically defensible conclusions.

      ...

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    • About us

      OTT HydroMet - United Competencies OTT HydroMet provides valuable insights for experts in water and weather applications to help protect lives, the environment and infrastructure. We go beyond simply providing solutions by partnering...

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    • HydroLab HL Series - ISE Sensors - FAQs
      Compilation of the most important FAQs about ISE sensors for the HydroLab HL series of water quality sondes
    • OTT TRH

      The compact, long-term stability weather sensor OTT TRH is responsible for the measurement of relative humidity and temperature. In addition it can calculate the values for absolute humidity, dew point and mixing ratio and output these via the SDI-12...

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        Are you interested in what happend and was published about us in the past? If so, you can find our latest news and press reviews here. To the PR Room

    • Leaflet - OTT WAD 200
      Leaflet - Weighing rain gauge with automatic drain OTT WAD 200
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    • OTT Hydras 3 net Hosted

      Hydras 3 net Hosted is designed for data management in hydrometrical and meteorological monitoring networks. Hydras 3 net Hosted is a browser-based add-on to Hydras 3 with additional functionalities.

      With Hydras 3 net Hosted, OTT HydroMet is...

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      LEGAL INFORMATION Provider data according to TDG/ MDStV OTT HydroMet GmbH Ludwigstr. 16 87437 Kempten Germany Tel.: + 49 - (0)831 5617 - 0 Fax: + 49 - (0)831 5617 - 209 euinfo@otthydromet.com Managing Director: Nadia Iannuzzi, Patrick...

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      In 1873, OTT was founded by inventor Albert Ott in Kempten, Germany. Join us at our site on the beautiful River Iller for a special video message Learn More

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      OTT Hydromet helps water resource professionals generate reliable data throughout the entire environmental water cycle.Our solutions focus around: Water Quality: Hydrolab multiparameter sondes for attended and unattended measurement of...

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    • HOTTline - availability of our customer service during the end-of-year and new year holidays 2019 / 2020

      In the period of Christmas and New Year's Eve we are reachable by Hotline via the number 0831 5617 430 or via email to HydroService@otthydromet.com as follows: On Friday, December 13, 2019, we can be reached only in the morning at the...

    • Copper Anti-Fouling Solutions

      Instrument bio-fouling is a challenge consistently faced by water quality professionals in their effort to collect accurate data. Bio-fouling not only affects data, but also significantly increases instrument maintenance costs and time spent in the...

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    • Chester River Nutrient Monitoring Article
    • Stormwater

      Recent events involving heavy rainfall in regions away from known flood hotspots show that many cities, towns and villages are having to deal with situations that have never happened in recorded history. Flooding, highways and drainage...

    • In-Situ Nutrient Monitoring Article
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    • Download Whitepaper

      Thank you for your interest in the OTT White Paper "Trends in Nutrient Monitoring".

    • Legal Information

      Address: OTT Hydromet GmbH Ludwigstr. 16 87437 Kempten Tel.: + 49 - (0)831 5617 - 0 Fax: + 49 - (0)831 5617 - 209 euinfo@otthydromet.com Managing Directors: Nadia Iannuzzi, Patrick Gierman, Jeffrey Stock, Nina von Sivers  Commercial...

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    • Sea-Bird Scientific ECOs

      The Environmental Characterization Optics (ECO) series of fluorometers delivers both high resolution and wide ranges. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the...

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      Thank you for your interest in our webinar about the OTT SVR 100 radar sensor – contact-free reliable and maintenance-free measurements. Enjoy watching the recording!

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    • Leaflet - Mobile Ultrasonic Doppler Discharge measurement system - OTT Qliner 2
    • Rentals

      Rental instruments are a perfect choice for short-term projects. All rental products are factory calibrated and tested before shipment. Weekly and monthly rates are available and the cost of the rental can be applied toward purchase of a...

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    • OTT Hydromet Cloud

      Hydromet Cloud provides secure real-time data access from almost anywhere in the world via HydrometCloud.com and the Hydromet Cloud Mobile App. This includes the backend infrastructure to receive, ingest, decode, process, display, and store...

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      Praktikum bei OTT

    • Video Surveillance de la qualité de l'eau avec OTT Hydromet
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    • Quality Standards

      Quality standards:For more than 140 years, the name OTT has stood for outstanding, innovative, high-quality products. Our high quality standards are part of the corporate culture and are supported by several pillars.

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      Contact Service International Support: Phone +49 831 5617 430 E-Mail: caredesk@ott.com NAtechsupport@otthydromet.com (North America) Find your local contact

    • Bench Service Partnerships

      Service contracts can reduce your instrument's lifetime repair costs by over 25%, decreasing your overall cost of ownership and increasing your return on investment. Plus, there are no hidden fees or additional repair expenses. This allows...

    • OTT Hydromet Water Quality Solutions

      OTT Hydromet offers water quality monitoring solutions, services and support, from Hydrolab and Sea-Bird Scientific, designed for water quality professionals to obtain the reliable data and measurements they need, all within the...

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    • Training

      Training workshops are periodically offered around the US and are an excellent opportunity for hands-on instruction with Hydrolab and OTT products from certified professionals.Workshop topics include:     Applications and instrument...

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