V 4.50.1 (2023-07-21)

This update provides the following extensions and optimisations:

Windows application
- The web interface user management is also available on the OTT Hydras 3 client.
- Access to the alarm archive is also available on the OTT Hydras 3 client.
- Exporting data is also possible in OTT-ML format (manually and as an export job).
- Enhanced support of OTT-ML format for Sutron XLink 100/500. Compatible with OTT netDL 500/1000.
- "Mean" function for a virtual sensor added.

Web interface
- Enhanced data report types: "Wind rose", "Meteogram" and "Heatmap".
- Derived values "Hourly Mean/Total" and "Daily Mean/Total" can now be displayed in the chart.
- Rights management is now integrated into user management.
- Dashboard panels can be refreshed automatically.
- Download and upload of station configuration files are now possible.
- "Live image" function: Images from all webcams of a station are displayed.

Bugfixes
- Creating a region locally in the OTT Hydras 3 net client for a remote workspace had no effect on the server workspace.
- Multi-column export: the attribute column contained the value of the previous sensor column.
- Import: Importing data files (MIS or raw data) via drag and drop in the chart window on the OTT Hydras 3 net Client did not work for a remote workspace.



V 4.40.0 (2022-11-07)

This update provides the following extensions and optimisations:

- Audit Trail: Hydras 3 can automatically create a so-called audit trail in which important user actions are logged in encrypted form.
- Automatic verification of redundant sensors
- Image archive for webcam images: Hydras 3 net Server can archive the received images over a longer period of time and display a list of stored images for selection.
- Check for availability of a new Hydras 3 version. Hydras 3 can check whether a new version is available for download. This check can be done manually or (optionally) automatically at each startup.
- Configurable dashboards in the web interface
- Embedding of dashboard panels in external web pages
- Remote modification of Python Scripts in Sutron XLink 500 and SatLink 3
- Direct entry of command line commands:  if only a simple sequence of command line commands is to be transmitted to the logger, it is possible to select an XLink/SatLink station in the station list in the configuration area, and execute the "Enter command(s)" menu item via the context menu.
- Security improvements - based on the results of several penetration tests, the security of Hydras 3 net has been further improved.
- Download of Meteosat Daten from the Eumetsat Server
- Excel Export without OLE Automation
- Further software optimisations and bugfixes



V 4.30.0

- Internal version; not published



V 4.22.0 (2022-05-05)

This update provides the following extensions and optimisations:

- Transmissions can now be disabled (by setting the transmission interval to 00:00:00; for OTT netDL FW ≥ 3.08.0 and OTT ecoLog 1000 ≥ 1.00.7).
- OTT ML metadata: if metadata such as GSM signal strength or humidity are assigned to a sensor, the software now automatically creates the sensors if they are missing.
- XLink support: on the OTT H3 Net Server, an XLink configuration file can be opened in an integrated editor that displays the configuration and the script. The configuration and/or script can be sent to XLink using the "UpdateConfiguration" command.
- Stations and sensors in the workspace of a remote server can be deleted from the client.
- All components of station/sensor configurations are transferred between client and server and vice versa whenever a station is created or modified.
- Several new script functions have been added: GetLastValuesFromServer, GetExtremeValuesFromServer, IsRemoteWorkspace, ReplaceSymbol.
- Graph window: can now be opened by pressing the Enter key when the sensor node is selected in the tree.
- Channel view: individual channels can now be added to this view from the selection list.
- Meteosat Download Job to automatically download data from the EumetSat web server.
- Search dialog now supports searching for specific parameter types.
- Further software optimisations and bugfixes



V 4.10.2 ... 4.21.0

- Internal versions; not published



V 4.10.1 (2021-06-24)

This update provides the following extensions and optimisations:

- Supports AutoImport on OTT Hydras 3 net clients for remote workspaces.
- Supports creation/display of info data on OTT Hydras 3 net clients for remote workspaces.
- Added SysAdmin web interface (/accountname/sysAdmin). Login with server name and licence key.
- Supports FTPS server settings for OTT netDL and OTT ecoLog 1000 configurations.
- SFTP support in script language
- Further software optimisations and bugfixes



V 4.05.0 ... 4.10.0

- Internal versions; not published



V 4.04.0 (2020-08-10)

This update provides the following extensions and optimisations:

- "LinkComm" operating software can be called up for OTT ecoLog 1000 configurations directly from OTT Hydras 3 net and a changed configuration can be written back to create a OTT Hydras 3 net command: “update configuration”
- Data of an OTT ecoLog 1000 can be read out locally via BLE (Bluetooth Low Energy)
- Battery voltage check adapted for OTT ecoLog 1000: current voltage - minimum voltage -> configurable voltage delta
- A Station can be created now automatically during test transmission (configurable via registry entry "Net_Server_Create_Station_on_Test_Transmission")
- Security improvements for the integrated OTT Hydras 3 net web server. No more access to files outside the "INetPub" file directory
- Further software optimisations and bugfixes



V 4.00.1 ... 4.03.0

- Internal versions; not published.



V 4.00.0 (2019-09-24)

This update* provides the following extensions and optimisations:

- Supports OTT ecoLog 1000 groundwater data logger
- Supports Sutron XLink 100/500 data logger
- Webinterface available in HydrometCloud style (activation code required)
- Download job for HydrometCloud available
- Context sensitive HTML help available
- Autoimport now optionally runs in the background
- Optimized client data access to server data
- Improved web server security (e.g. HTTP PUT requests are blocked)
- Notification SMS can be sent by a Twilio account via the Internet
- Further software optimisations and bugfixes

* chargeable from all previous versions



V 3.10.0

- Internal version; not published.



V 3.08.0 (2018-04-05)

This update* provides the following extensions and optimisations:

- Alarm messages (based on the information on the status page) can be sent by E-Mail/SMS;
- Extended multi-client capability: many settings which have been global before can now be adjusted individually for each workspace;
- OTT Hydras 3 net Client now uses HTTP Proxy settings (if available);
- Sutron Dataloggers (Xpert2; 9210B; 8310; 7310) can now transmit data in CSV format directly to the "TCP Socket" interface of OTT Hydras 3 net;
- Automatic data retrieval from Adcon A850 Gateways per download job is now possible;
- It is now possible to edit data, to transfer raw data, to import and calculate virual sensors with OTT Hydras 3 net Clients and a remote workspace;
- OTT Hydras 3 net Server can  be installed and used directly as Microsoft Windows system service (Run as Service), no further external tools are required;
- OTT-ML data received via HTTP(S) can be forwareded via HTTP(S) to an other (OTT Hydras 3 net) server or can be exported directly;
- Updated security concept;
- Certificates can be used directly from the Microsoft Windows Certificate Storage (without importing a certificate file);
- Data retrieval (polling) is now also possible by HTTP(S) (manually or by a polling-job):
- Various minor software optimisations and bugfixes

* free from Version V 3.xx.x; chargeable from Version 2.xx.x



V 3.00.2 ... 3.07.0

- Internal versions; not published.



V 3.00.1 (2016-06-09)

- Internal processing of commands in OTT-ML format has been optimised
- Various bugfixes



V 3.00.0 (2016-04-18)

Update is chargeable!

- OTT Hydras 3 net functionality implemented 
- Online map based on Open Street Map
- Data in OTT-ML format can now also be read out via USB / RS-232 / modem
- During the active auto import, OTT Hydras 3 can still be operated
- Stations in OTT Hydras 3 can be created directly out of the OTT Data Logger Operating Program
- Integrated web server supports HTTPS
- Manages up to 30 level reference points (previously max. 5)
- Various script commands added or expanded 



V 2.91.0   (2013-08-05)

This version can be downloaded from "www.ott.com/misc/Setup_Hydras3_V2910_EN.exe"

- USB communication with OTT netDL (manual)
- IP communication with OTT netDL (manual and automatic)
- Option to activate an integrated OPC DA 2.0 Server (this option has to be bought separately. Please contact OTT Hydromet or your OTT dealer for technical details and price).
- Automatic scaling of graphs
- SMTP transmission is now also possible with TLS/SSL authentication (e.g. GMail, Hotmail)
- Selectable options for EXCEL export
- Options for maps are shown directly beside the map
- Relevance of data can be visualized in the map
- Sum lines for multi-graphics available
- ZRXP export with REXCHANGE ID 
- AutoImport of OTT-ML files (*.oml)
- Automatic poll has been upgraded
- Extensions in script language (Hydras 3 pro)
- Database adjustments (longer paths possible)
- Various bugfixes