Visit us at AMS 2018!


98th AMS Annual Meeting
7–11 January 2018
Austin Convention Center | 500 East Cesar Chavez | Austin, TX

Please make sure to stop by Booth 607 at the Austin Convention Center between January 7-11, to discuss the latest in environmental monitoring techniques at the 98th Annual American Meteorological Society meeting.

Tech-Tipp: OTT netDL Configuration with several SDI-12 Sensors

All new OTT sensors  provide a bus-capable interface, either SDI-12 or the RS 485 based OTT SDI . The special Master Modul of the OTT netDL enables the connection of several sensors to every bus (SDI-12 or OTT SDI). Connect for example an OTT Pluvio² and a Lufft WS510  sensor to one OTT netDL and you get a compact, efficient weather station. Just talk to your personal contact at OTT Hydromet to learn more.

The following Tech-Tipp shows exactly how you connect several SDI-12 sensors to an OTT netDL step by step.

Title_netDL_several SDI12 sensors



OTT Hydromet sensors for measuring water level in creeks and bayous, played a critical role during Hurricane Harvey.


Hurricane Harvey, and the subsequent flooding, was an unprecedented and devastating event in eastern Texas. Harvey produced an average of 33.7 inches of rainfall over the 1,777 square miles of Harris County over a 4 day period which equates to 1 trillion gallons of water and is also 68% of the yearly annual rainfall. Of the 22 watersheds across Harris County, 13 established new record water levels during Harvey surpassing previous records by Tropical Storm Allison (2001), Tropical Claudette (1979) and the @016 Tax Day flooding. The Harris County Flood Control District was first established in 1937 following two major floods within six years and started installing their Flood Warning System in 1982 and was at the epicenter of the flooding associated with Hurricane Harvey.  Since 2010, the District has partnered with OTT Hydromet to expand their real time network, and install various sensors which measure water level responses in creeks and bayous. Water level measurements provide critical information needed by first responders and the National Weather Service when making decisions on issuing targeted flood warnings and properly messaging needed actions. Continue reading

Hydromet Launches new HYDROLAB HL7 Water Quality Sonde

OTT Hydromet introduces the HYDROLAB HL7 multiparameter sonde for continuous monitoring of 9 key water quality parameters in open natural waters. This new multi-parameter probe maximizes deployment life, minimizes maintenance and provides traceable data you can trust.


The HYDROLAB HL7 includes intuitive software for unmatched usability, exceptional power performance and proven sensor options, all delivering high data quality and reliability.

Learn More about the new Hydrolab HL7 Sonde – click here
Continue reading

What does the RoHS certification mean for OTT products?


The EU Directive 2011/65 / EU is intended to limit the use of hazardous substances in electrical and electronic equipment. Since 22 July 2017 the RoHS regulation is applicable to monitoring and control instruments, including OTT devices and sensors. From this point onwards, we must have a RoHS certification for all devices and sensors. As of 22 July, RoHS is also a compulsory part of the CE declaration.

Without CE and RoHS, corresponding products may no longer be sold in the EU (and countries that are adapting to the EU-Directive). An exception is spare parts and parts, which are used for repair.

As a manufacturer of environmental measurement technology, we have always been committed to producing and marketing environmentally friendly products.

In order to implement the RoHS measures in our company, we have created a coordination center that has examined and, if necessary, changed all of the 30,000 articles and products.

What is RoHS?
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment. This restriction is anchored in EU Directive 2011/65 / EU. If a product is RoHS-certified, this confirms that the proportion of hazardous, or difficult to dispose substances is limited to the maximum allowed. Continue reading

Watch the On-Demand Webinar Now! Hydromet Clound Introduction


Hydromet Cloud is an evolved yet simple Secure Web-Based Data Hosting Solution capable of retrieving data from remote field stations and delivering information to you anywhere in world. See how quick and easy it is to use the Hydromet Cloud App for Hydromet Cloud. View custom plots, stations and alarms right on your phone anywhere!! View Video. Find out more during this on-demand webinar.



Download the Quality Assurance and Quality Control Technical Note Now!

The primary activities taken to assure and control data quality are aptly called quality assurance and quality control. Determining the “true value” of a water quality measurement is an important fundamental of any QA/QC program. To determine the true value, many professionals apply a second means of measuring the parameter of interest, such as another instrument that is kept serviced and calibrated just for quality control purposes or a grab sample that is evaluated using a trusted laboratory technique. Instruments such as HYDROLAB‘s produce high quality data for many applications and by leveraging the HYDROLAB Operating System you can maximize uptime with streamlined calibration tasks

Good QA/QC programs require robust calibration procedures that ultimately provide valuable information about, and confidence in, the instrument’s performance. The QA/QC Tech note highlights key information made available during a HYDROLAB multi-parameter water quality sonde calibration.

Read the complete QA/QC Tech Note