Our products

The following pages shows our measuring instruments and system solutions for water level, discharge, precipitation and water quality measurement as well as complementary data loggers, operating and reading units and solutions for communication and data processing via OTT Software Hydras 3.

Long term water quality monitoring

Hydrolab DS5 - Multiparameter Data Sonde

Water Quality Sonde with Flexible Sensor Payload

Hydrolab DS5 multiparameter water quality sonde offers the most Hydrolab sensors on a multiparameter platform for either profiling or unattended monitoring.

  • Attended, Unattended
  • Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (LDO), Dissolved Oxygen (Clark Cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride, Total Dissolved Gas (TDG), Ambient Light
  • The Hydrolab sonde with the most available sensors
  • SDI-12, RS-485, RS-232, TTY
Water quality probe for maximum deployment times

Hydrolab DS5X - Multiparameter Data Sonde

Water Quality Sonde for Maximum Deployment Times

Hydrolab DS5X multiparameter water quality sonde offers the most Hydrolab sensors on a multiparameter platform especially designed for longterm unattended monitoring

  • Attended, Unattended
  • Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (LDO), Dissolved Oxygen (Clark Cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride, Total Dissolved Gas (TDG), Ambient Light
  • The Hydrolab sonde with the most available sensors and a central cleaning system to minimize fouling
  • SDI-12, RS-485, RS-232, TTY
New water quality sonde platform: ease of use, meta-data, reliability

Hydrolab HL4 Multiparameter Sonde

New Hydrolab Platform: Reliability, Ease-of-use, Metadata

The Hydrolab HL4 is the next generation multiparameter water quality sonde from OTT Hydromet. Its reliability, ease-of-use, and metadata produce water quality data you can trust.

  • Attended, Unattended
  • Temperature, Conductivity, Depth, pH, Dissolved Oxygen (LDO), Turbidity, ORP
  • The next generation multiparameter water quality instrument
  • SDI-12, RS-485, RS-232, TTY, USB
Lightweight multi-probe water quality testing instrument

Hydrolab MS5 - Mulitparameter Mini Sonde

Lightweight multi-probe with four ports available for water quality sensors

The Hydrolab MS5 multiparameter water quality sonde offers a selection of Hydrolab sensors on a compact and lightweight multiprobe designed for either profiling or unattended monitoring.

  • Attended, Unattended
  • Temperature, Conductivity, Depth, pH ,ORP, Dissolved Oxygen (LDO, Clark cell), Turbidity, Chlorophyll a, Blue-Green Algae, Rhodamine WT, Ammonium, Nitrate, Chloride , TDG
  • The Hydrolab sonde profile for a smaller sensor payload that will fit in a two-inch well
  • SDI-12, RS-485, RS-232, TTY
Operating Software Hydrolab HL4 Metadata

Hydrolab Operating Software

PC-based application for interfacing with Hydrolab HL Series sondes, the Hydrolab Surveyor HL, and Hydrolab communications modules.

  • Hydrometry
  • Compatible with Microsoft Windows XP SP3, Vista, 7 (32 bit or 64bit) or 8
  • Easily switch between PC and handheld versions, self-monitoring system, semi-automated calibration
For basic water quality spot measurements in groundwater wells

Hydrolab Quanta G Multi-Probe Meter

For basic water quality parameter spot measurements in groundwater wells

For basic water quality parameter spot measurements in groundwater wells, the Quanta-G offers Hydrolas sensor technology in a complete stainless steel package that includes an easy-to-use, handheld display.

  • Attended
  • Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (Clark Cell)
  • The Hydrolab sonde for basic spot measurements that will fit in a two-inch well
  • SDI-12
Quanta - muliparameter sonde for basic water quality spot measurements

Hydrolab Quanta Multi-Probe Meter

Multiparameter sonde for basic water quality spot measurements

For basic water quality spot measurements the Hydrolab Quanta multiparameter water quality sonde offers Hydrolab's sensor technology in a complete, cost-optimized system package that includes an easy-to-use handheld display.

  • Attended
  • Temperature, Conductivity, Depth, pH, Oxygen Reduction Potential (ORP), Dissolved Oxygen (Clark Cell), Turbidity
  • The Hydrolab sonde for basic spot measurements
  • SDI-12
Acoustic Digital Current Meter OTT ADC

OTT ADC - Acoustic Digital Current Meter

Handheld, acoustic water flow meter for in-stream point velocity measurements

The OTT Acoustic Digital Current meter (ADC) delivers consistently accurate results with the most advanced acoustic technology available for point velocity measurement.

  • Spot
  • Acoustic
  • Flow velocity, depth
  • Latest state of the art ultrasonic Doppler technology for high accurate velocity measurements. Maintenance free sensor with integrated depth measurement, graphical step by step user guidance and discharge calculation according to ISO 748 and USGS standard
  • -0.2 … 2.4 m/s
  • ± 1% of measured value ± 0.25 cm/s
Non-contact bubbler in water level sensor for surface water monitoring

OTT CBS - Compact Bubbler Sensor

Non-contact bubbler sensor for surface water level monitoring

The OTT CBS is a compact, accurate, and low power bubbler sensor for surface or groundwater level monitoring.

  • Surface water, Groundwater
  • Bubbler-in
  • Drift-free water level measurement - no pressure sensor or electronics in the water
  • 0 to 15 m or 0 to 30 m
  • ± 3 mm (high accuracy version); ± 5 mm (standard and 30 meter versions)
  • No
  • SDI-12, RS-485 (using SDI-12), or 4 ...20 mA
With integrated sensor and datalogger for longterm monitoring

OTT CTD Sensor

Pressure sensor and datalogger for measuring conductivity, temperature and level

The OTT CTD is an integrated sensor and datalogger for measurement of water level, temperature, and conductivity in groundwater and surface water applications.

  • Surface water, Groundwater
  • Vented pressure cell and 4-electrode graphite conductivity cell
  • Waterlevel, Temperature, Conductivity
  • Measures and stores water level, temperature, and conductivity data
  • Water level: 0 … 4, 10, 20, 40, and 100 m Conductivity: 0.001…2.000 mS/cm, 0.10…100.00 mS/cm
  • ±0,05 % FS
  • Yes
Groundwater level monitoring OTT ecoLog 500

OTT ecoLog 500 Water Level Logger

Water level sensor with built-in datalogger and telemetry

The OTT ecoLOG 500 is a self-contained water level instrument offering flexible remote data options and unequaled performance for the price.

  • Surface water, Groundwater
  • Vented pressure cell
  • Waterlevel/Pressure, Water temperature
  • Measures, stores, and transmits water level and temperature data
  • 0 … 4, 10, 20, 40, and 100 m
  • ± 0.05% FS
  • Yes
Longterm monitoring of conductivity, temperature and water level

OTT ecoLog 800 Water Level Logger

Water level and conductivity sensor with built-in datalogger and telemetry

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

  • Surface water, Groundwater
  • Vented pressure cell and 4-electrode graphite conductivity cell
  • Waterlevel/Pressure, Water temperature, Conductivity
  • Measures, stores, and transmits water level and temperature data
  • 0 … 4, 10, 20, 40, and 100 m
  • ± 0.05% FS
  • Yes
Monitoring network management software OTT Hydras 3

OTT Hydras 3

Monitoring network management software

Monitoring network management software OTT Hydras 3 for professional data management, evaluation, processing and alarm management.

  • Hydrometry, Meteorology and Environmental Protection
  • Microsoft Windows 95/98/2000, Windows NT 4.0, Windows XP, Windows Vista, Windows 7
  • Graphical editor, Map display, Alarm management, Parametrization and data reading of stations, Autoimport of data, Autoexport, Displaying data
Hydras 3 Basic - Communication software

OTT Hydras 3 Basic

Basic communication software

OTT Hydras 3 Basic software simplifies the management of dataloggers, stations and small measuring networks.

  • Hydrometry, Meteorology and Environmental Protection
  • Microsoft Windows 95/98/2000, Windows NT 4.0, Windows XP, Windows Vista, Windows 7
  • Graphical editor, Parametrization and data reading of stations, Autoimport of data, Displaying data
Hydrological Station - Gauging Station OTT HydroSystems

OTT Hydrosystem Gauging Station

Complete hydrological gauging station with telemetry

OTT HydroSystems allow hydrological measuring stations to be set up using only a few manual operations. The completely fitted system cabinets include components for power supply and everything that is needed for storing and transmitting measured data.

  • Turn-key solutions for stand-alone measuring stations
  • Gauging station, Pole mount
  • Battery, Solar
  • Cellular, Satellite
Handheld electromagnetic stream flow meter with automatic discharge calculation

OTT MF pro - Water Flow Meter

Handheld electromagnetic stream flow meter with automatic discharge calculation

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

  • Spot
  • Electro-magnetic
  • Flow velocity and water depth
  • Low maintenance magnetic - inductive probe with level measurement for reliable flow measurements. Works well in low flow and turbulent conditions, cross - sections with weed growth and pollution. Applicable in streams and conduits.
  • 0 … 6 m/s
  • ± 2% of measured value ± 0.015 m/s ( 0 … 3 m/s ) and ± 4% of measured value ± 0.015 m/s ( 3 … 5 m/s )
Multichannel IP datalogger

OTT netDL Datalogger

Loggers for remote data collection & long term water monitoring

The versatile OTT netDL 500 and 1000 dataloggers were developed specifically for use in hydrology and meteorology stations. In addition to recording data, the loggers are extremely low power and offer flexible data transfer options via the internet and mobile networks, providing a logging and telemetry solution for every project.

  • USB-Host, USB-Device, RS-232, Satellite, Cellular, Datalogger, Industrial Communication
  • High data availability due to large memory and various communication possibilities, redundant communication, communication via TCP/IP Integrated Web Server, Ultra low power design Industrial design for harsh environment, industrial communication
  • Yes
  • SDI-12, RS-485 (SDI-12), Modbus RTU, analogue-in (voltage and current), Impulse Input, Status Input
Groundwater level and temperature monitoring

OTT Orpheus Mini Water Level Logger

Integrated pressure sensor with datalogger for ground and surface water

The OTT Orpheus Mini is an integrated pressure sensor and datalogger for level measurement in surface and groundwater applications.

  • Surface water, Groundwater
  • Vented pressure cell
  • Waterlevel/Pressure, Water temperature
  • Measures and stores water level and temperature data
  • 0 … 4, 10, 20, 40, and 100 m
  • ± 0.05% FS
  • Yes
Present weather sensor Disdrometer OTT Parsivel²

OTT Parsivel² - Laser Weather Sensor

Laser preciptation disdrometer measuring all precipitation types

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.

  • Precipitation type, intensity, drop size distribution, radar reflectivity
  • Laser optical
  • Simultaneous measurement of 32 classes for particle sizes and velocities
  • SDI-12 / RS-485, pulse
OTT PLS - vented pressure

OTT PLS - Pressure Level Sensor

Robust ceramic pressure level sensor for water level measurement

The OTT PLS, SDI-12 or 4 ... 20 mA pressure probe, measures water level, depth to water, or pressure using an integrated controller and ceramic pressure-measuring cell.

  • Surface water, Groundwater
  • Vented pressure cell
  • Water level, Pressure, Temperature
  • Water level and temperature measurement - for use with external data logger
  • 0 … 4, 10, 20, 40, and 100 m
  • ± 0.05% FS
  • Yes
  • SDI-12, RS-485 (using SDI-12), or 4 … 20 mA
All weather precipitation gauge OTT Pluvio²

OTT Pluvio² - Weighing Rain Gauge

All-weather, high accuracy rain gauge for continous data collection

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.

  • Cumulative precipitation, precipitation intensity, bucket content in real time and non real time
  • Weighing principle
  • All-weather precipitation gauge without moving parts according to WMO guide line No. 8
  • SDI-12 / RS-485, pulse
OTT Qliner 2 – Doppler technology for mobile discharge measurements

OTT Q Liner2 ADCP Boat

Acoustic Doppler Current Profiler for surface water discharge measurement

OTT Qliner 2 – Doppler technology for mobile discharge measurement in rivers and channels. The robust system delivers reliable measurements even in moving sole conditions or at flood situations.

  • Spot
  • Acoustic
  • Flow velocity and depth
  • Acoustic water profiling instrument for section by section discharge measurements in rivers and open channels up to 20 m water depth. Operated by PDA user software with Bluetooth data transmission. Low flow resistance and high boat stability.
  • ± 10 m/s
  • ± 1% of measured value ± 0.5 cm/s
water level radar sensor for surface water applications

OTT RLS - Radar Level Sensor

Non-contact level sensor for long term surface water monitoring

The OTT RLS is a non-contact radar level sensor with pulse radar technology that is ideal for monitoring in remote or hard to reach locations.

  • Surface water
  • Water level / distance to water
  • Non-contact pulse radar
  • Measures water level or depth to water from a bridge, pier or mounting arm
  • 1.3-115 ft (0.4-35 m)
  • 1.3-6.6ft: ±0.03 ft; 6.6-98.5 ft: ±0.01 ft; 98.5-115: ±0.03 ft
  • No
  • SDI-12, RS-485 (using SDI-12), or 4 ...20 mA
Side Looking Doppler System

OTT SLD - Side Looking Doppler Sensor

Water flow sensor for longterm data collection of velocity and discharge measurements

The OTT SLD uses acoustic Doppler technology for continuous measurement of water velocity and level in streams, rivers, and canals.

  • Fixed installation
  • Acoustic
  • Flow velocity
  • Side-Looking-Doppler for continuous discharge measurement in rivers and open channels. Discharge calculation based on velocity - index - method. Integrated vessel filter algorithm, Modbus interface and output of total volume of flow (max. interval 1 day).
  • ± 10 m/s
  • ± 1 % of measured value ± 0.5 cm/s
Water level float operated shaft encoder with datalogger OTT Thalimedes

OTT Thalimedes Shaft Encoder

Float-operated shaft encoder water level sensor with internal datalogger

The OTT Thalimedes float-operated shaft encoder level sensor and logger provides proven water level measurements in continuous, unattended monitoring in ground and surface water applications.

  • Surface water, Groundwater
  • Float-operated Shaft Encoder
  • Water level
  • Measures and stores water level data
  • ± 199.99 m, or ± 19.999 m
  • ± 0.002 m, ± 1 Digit
  • Yes
Seabird Scientific Water Quality

Sea-Bird Coastal Cycle-P Phosphate Sensor

High accuracy in-situ phosphate measurement

The Sea-Bird Coastal Cycle P with technology by WET Labs is a single analyte chemical sensor designed specifically for long-term monitoring in biologically rich water.

  • Unattended
  • Phosphate
  • Long-term in-situ phosphate measurement in biologically rich waters
  • SDI-12, RS-232
Seabird Scientific HydroCat water quality

Sea-Bird Coastal HydroCAT

For longterm water quality monitroing with proven anti-fouling technology

The Sea-Bird Coastal HydroCAT with technology by Sea-Bird Electronics (SBE) is ideally suited for extended deployments in remote, biologically rich environments.

  • Unattended
  • Temperature, Pressure, Dissolved Oxygen, Conductivity
  • Ideally suited for extended deployments in remote, biologically rich environments
  • SDI-12, RS-232, RS-485 (optional)
industry-leading nitrate measurement SUNA

Sea-Bird Coastal SUNA Optical Nitrate Sensor

High accuracy in-situ nitrate measurement

The Sea-Bird Coastal SUNA V2 UV nitrate sensor with technology by Satlantic is the ultimate chemical-free solution for autonomous monitoring in estuarine and freshwater environments.

  • Attended, Unattended
  • Nitrate
  • High-accuracy, chemical-free, in-situ nitrate measurement
  • SDI-12, RS-232
superior long-term monitoring water quality SBC WQM

Sea-Bird Coastal WQM

Water Quality Monitor for Maximum Deployment Times

The Sea-Bird Coastal WQM X with technology by Sea-Bird Electronics and WET Labs is designed specifically for long-term moored operations in biologically rich water.

  • Unattended
  • Conductivity, pressure, chlorophyll, temperature, dissolved oxygen, turbidity
  • Designed specifically for extended deployment in biologically rich waters
  • RS-232