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Welcome to YSI Hydrodata

Located in Letchworth, UK, YSI Hydrodata distributes YSI and SonTek instruments and monitoring systems, providing training, installation, service, repair and calibration support services in addition to a full range of rental products.  We are a division of YSI Incorporated, a global business committed to sustaining the quality and viability of the Earth's water resources with the world's most accurate and reliable water quality and hydrology measurement technologies.

Featured Applications

Port and Harbour Monitoring

Effective port or harbour management requires monitoring data for tides, underwater surfaces and water quality.

Pollution Monitoring

Pollution monitoring technology has advanced considerably & many options now exist for monitoring both diffuse & point source pollution.

Coastal Monitoring

YSI's instruments and systems are designed to work in the most harsh of environments including the monitoring of the coastal waters.

News Updates

Water Quality is key to the success of Cardiff Bay Restoration

YSI buoy in the Cardiff Bay

Water quality has been a central theme in a redevelopment project that began with the creation of the Cardiff Bay Development Corporation in 1897....

 

 

New CTD Monitoring Technology Helps Reveal Arctic Secrets

YSI Castaway in Arctic

A group of Arctic researchers has employed the latest monitoring technology to investigate the effects of climate change, by measuring temperature and salinity in the water column beneath surface ice....

 

 

Support

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Events & Training

Field Services

Rentals

Repair

Resource Library

Warranty Form


Other YSI Divisions

YSI

SonTek/YSI

YSI Integrated Systems

Design Analysis Associates

YSI ISA - Instrumentos e
Servicios Ambientais
(Latin America)

 

YSI Middle East

YSI South Asia / India

YSI China

YSI/Nanotech (Japan)

YSI Australia

Rental Specials

Argonaut-SL Side-Looker

SL Family

Designed with the need for an easy way to measure water velocity, level and calculate flow / discharge in open channels, the Argonaut-SL has earned worldwide acceptance as a long-term monitoring...

 

Remote Boat for ADCP

R2V2

Remote boat...

 

 

Upcoming Events



Event Calendar

Automated Underwater

Vehicles (AUV)

EcoMapper

Buoys & Platforms

EMM700 Buoy

Harbour Buoy

HD-125 Buoy

PISCES Platform

CTD

CastAway CTD with GPS

Enclosures

Custom Cabinets

Flow - Continuous

Argonaut-SL

Argonaut-SW

Velocity Radar

Continuous Flow Accessories

Frames / Mounts

Flow - Instantaneous

RiverSurveyor S5 and M9

FlowTracker Handheld-ADV

Instantaneous Flow Accessories

Cable Chimp II

Remote Boat for ADCP

Torrent Board

Level

Bubbler - H-3553

H-3121 & H-3122

Level Scout Level & Temp

Radar

Laboratory

Pro OBOD

9300 / 9500 Photometer

Ocean/Coastal Velocity

Argonaut MD

Argonaut XR

V-Fins

Process Monitors

HydroSAM

6500

Water Quality
Handheld Instruments

Pro Quatro

ProPlus

ProODO

Pro 2030

Pro 20

Water Quality
Vertical Profilers

Profilers

Water Quality Sondes

6-Series Multiparameter Sondes

Sonde Accessories

650MDS Data Display/Logger

Anti-Fouling Kits

Mounting Frames

Oil-in-Water Sensor Kit

PAR Sensor Kit

Telemetry

EcoNet Data-to-Web

PeliNet Portable

System 5000

522+

Ask a Question

Events & Training

Field Services

Rentals

Repair

Resource Library

Warranty Form

Director's Welcome

Application Specialists

News

History

MCERTS

Career Opportunities

Sustainability Report

The YSI Foundation

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YSI is a trademark of Xylem Inc. or one of its subsidiaries.
YSI Hydrodata | Unit 2 Focal Point | Lacerta Court | Works Road | Letchworth, Hertfordshire SG6 1FJ | United Kingdom
01462 673581 | 01462 673 582 Fax | europe@ysi.com | Company No. 4838831 | VAT No. 828 1979 85