FAQ

Data pull via modem is not possible any longer. This is not supported by 4G (LTE) and will be or is already discontinued for GSM/GPRS by the most providers as well.

OTT ecoLog 1000 Water Level Logger

In principle, V 3.x clients also work with V 4.x servers. However, we do not recommend this, as some optimizations cannot be used. For example, a V 4.x client only retrieves data from the server that has been added or edited since the last data access.  A V 3.x client, on the other hand, always retrieves all data, which can be very slow for longer time series or shorter intervals.

OTT Hydras 3 net

OTT Hydras 3 Basic

No, local communication is done exclusively via Bluetooth.

OTT ecoLog 1000 Water Level Logger

OTT ecoLog 1000 is an IP capable data logger acting as webclient, web server functionality does not make sense in this device, the modem would be required to switched on all time (power!) or it would be only limited access due to the need of maintenance windows.

OTT ecoLog 1000 Water Level Logger

This means that the storage interval of the data collector does not match the periodic setting of the sensor in Hydras 3. The easiest (and fastest) solution is to open the sensor properties in Hydras 3 (right mouse click on the sensor name, then menu item "Properties") and change the data type from "periodic" to "aperiodic". The only difference is that future data gaps within one day (not sent or imported data, but error codes) are no longer marked with the dashed vertical lines.

OTT Hydras 3 net

OTT Hydras 3 Basic

The device only communicates via one communication path, mobile communication via the modem or locally via Bluetooth. If by chance a transmission is ongoing, the Bluetooth is blocked. Try again since a transmission is typically completed within 1 minute.

OTT ecoLog 1000 Water Level Logger

Whenever data are written to the database (either by import or editing), a temporary database named TDBxxxx.DB (where xxxx is the sensor number)  is created in the station directory, where the new values are stored first. In a next step, the data are then transferred from the temporary database to the actual database.
If  the temporary database already exists, Hydras3 tries to delete the database. If the database was created by another user or the database is currently open, it cannot be deleted. In this case Hydras3 cannot import in this sensor and ignores the import file. In the AutoImport cycle (every minute), Hydras3 tries again to import the file. Usually as soon as the temporary database is removed, the import will be successful. However there are cases, when the temporary database, which was created by a different user is not properly removed (e.g. because Hydras3 was terminated using the task manager while editing the data), the temporary database remains forever and blocks the AutoImport forever.

Solution: Locate the temporary database TDBxxxx.DB (where xxxx is the sensor number) in the directory of the corresponding station and delete this file and also the TDBxxxx.PX file manually.

OTT Hydras 3 net

OTT Hydras 3 Basic

The license key for Hydras 3 is valid for one user at one PC. So if there are several users (the user is identified by the Windows login name) on one PC, several licenses are required. If a key is used by several users or on several PCs, a corresponding notification appears in the Hydras 3 message window (below the menu bar in red letters). OTT also tolerates the use of a license key on several computers of the same user (e.g. a desktop PC and a laptop for field use) as long as they are not used at the same time - this is taken into account in the validation as of version 4.0.4.

If the license of a retired user is to be used for another user or if Hydras 3 is to be installed on a new PC, please proceed as follows:

1. Confirm or delete message by double-clicking on it
2. Please make sure that you have the license code for your Hydras 3 version ready. If you cannot find it, please copy the following registry entry to the new computer or to the account of the new user: \HKEY_CURRENT_USER\Software\Ott-Hydrometry\Hydras3\General\GUID (your IT department will certainly help you). Also note the ID in Hydras 3 below the version number in the menu item Help / Info (Tip: because of the short display time please make a screenshot with the button "Print", insert it into the program Paint or similar and save it as file)!
3. Uninstall Hydras 3 on the old computer (make a data backup of the workspace directories and the program directory of Hydras3 before! Only when moving to a new computer) or delete the above mentioned registry key of the retired user.
4. Delete the following file from the reported workspace directory: userlist.log
5. Restart Hydras 3 - the message should no longer appear. If necessary repeat point C) for further workspace directories.

OTT Hydras 3 net

OTT Hydras 3 Basic

Communication on this interface follows the SDI-12 protocol. This follows a specific timing which is defined by the SDI-12 standard. Please find detailed information in the attached/linked document. The sensor wont react to simple ASCII commands send through this interface as they do not conform to the SDI-12 standard.

Regarding PLS Sensor: The RS-485 interface might not be active by default. In this case it needs to be activated using the SDI-12 interface of the sensor. Our HydroService will assist you in this matter (HydroService@OTTHydromet.com).

Regarding CBS Sensor: The active interface of the sensor is determined by dip switches on the device. Please follow the sensor instruction to active the RS-485 interface.

Learn more about the datalogger implementation via RS-485

OTT PLS - Pressure Level Sensor

OTT CBS - Compact Bubbler Sensor

OTT RLS - Radar Level Sensor

LinkComm is a free of charge operating software for the ecoLog. The Windows 10 PC version is available on the OTT HydroMet website. The APPs for Android or iOS can be downloaded from the APP stores.

OTT ecoLog 1000 Water Level Logger

OTT HydroMet provides a calculation tool helping to understand how long the battery could last.

OTT ecoLog 1000 Water Level Logger

You can set limits to the “Supply Voltage” M3 or the “Power Consumption” M4 and send alarms to one or more recipients.

OTT ecoLog 1000 Water Level Logger

You can do this manually via “Upgrade” in the tab “Diagnostics”. If you receive a new LinkComm, the new firmware for the device is already build into LinkComm and can be installed out of LinkComm.

OTT ecoLog 1000 Water Level Logger

The communication between a Hydras 3 net client and the Hydras 3 net server is carried out via HTTP and/or HTTPs, depending on the settings, whereby the port number can be set freely (normally 80 or 443). The firewall must allow the connection from the client to the server accordingly.

The individual users use Basic Auth. for the login, whereby the user name must correspond to the Windows user name.

OTT Hydras 3 net

OTT Hydras 3 Basic

Maintenance of the reference electrode is critical because ISE potentials are measured with respect to the reference electrode.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Chloride ion concentration is also measured with a chloride ion-selective electrode (ISE). The chloride ISE is a pellet of silver chloride in direct contact with the sample water. Because silver chloride has extremely low solubility in water, the silver chloride pellet never reaches chemical equilibrium with the sample water. Instead, a small amount of chloride ion dissolves into the sample. The resulting relative surplus of silver ions at the surface of the pellet creates a measurable electrical potential that varies with the concentration of chloride ions in the sample. This activity is compared to an electrode filled with a Potassium Chloride and Silver Chloride electrolyte (KCl and AgCl) which has a known ionic activity constant. The difference between these two “half cells” gives electrical potential in millivolts (mV).

Chloride sensors suffer interferences from other ions, working best when the concentrations of bromide, iodide, cyanide, silver, and sulfide ions are much lower than the chloride ion concentration.

Notice that ISEs are sensitive only to the ionized form of the chemical in question. Un-ionized forms of the chemical (for instance, insoluble salts or organic compounds), will not be detected by the ISE.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

The chloride ion does not react with, or adsorb to, most components of rocks and soils, and so is easily transported through water columns. Thus, chloride is an effective tracer for pollution from chemicals moving from man-made sources into natural water bodies, or for salt water intrusion.
Applications for Chloride ion measurement include monitoring landfills for leaks, tracing the movement of point or non-point source pollutants within a natural water body (for instance, storm water runoff), monitoring estuary waters for changes in salinity, and detection of salt water intrusion into drinking water supplies.

Hydrolab HL7 - Multiparameter Sonde

Hydrolab HL4 Multiparameter Sonde

Up to Hydras 3 version 3.x the auto-import runs in the foreground, therefore the user interface freezes during the import (especially of large amounts of data or a large number of files in the auto-import directory). Since version 4.x you can (optionally) run this completely as a background process.

OTT Hydras 3 net

OTT Hydras 3 Basic

Once a station is created and saved in LinkComm, all modifications are automatically saved. An additional step to save changes is not required.

OTT ecoLog 1000 Water Level Logger

The ecoLog provides 2 transmission and therefore 2 transmission times. For each transmission, 2 servers can be configured as either parallel transmission or fallback.

OTT ecoLog 1000 Water Level Logger

The ecoLog 1000 does not have webserver and can therefore not be reached via a static IP address. The device is a web client only. To have 2-way communication the network management software Hydras 3 net is available.

OTT ecoLog 1000 Water Level Logger

There is only one LinkComm which is used for all loggers including the ecoLog 1000. Make sure to have the latest version with all the loggers supported.

OTT ecoLog 1000 Water Level Logger

You need to have a Hydras 3 version 4.0 or higher to have ecoLog 1000 management network support.

OTT ecoLog 1000 Water Level Logger

OTT Hydras 3 net

OTT Hydras 3 Basic

This depends if there is no coverage at all it will not work but if there is GSM/GPRS the ecoLog 1000 will automatically connect to this network.

OTT ecoLog 1000 Water Level Logger

There are inexpensive adapters from Nano or Micro SIM to the required MiniSIM available in almost every electronic shop.

OTT ecoLog 1000 Water Level Logger

You can use HTTPS TLS 1.2 (incl. latest Cipher Suites). The ecoLog 1000 does not support FTP-S or SFTP.

OTT ecoLog 1000 Water Level Logger

Probably the configuration file got corrupt. Please open the file ‘configuration.ini’ with an editor (make a backup of the file before!) and delete everything except the following lines (instead of ‘…’ there should be an individual numerical code). If you don’t succeed, please send in the Z400 for repair.

[Settings]
LanguageOffset=-1
Code=…

OTT Z400

Go to “Diagnostics” to find the button “Reset PBAT”.

OTT ecoLog 1000 Water Level Logger

The one towards the top (labeled BLE) is green if the Bluetooth connection is active. The second one is for the mobile communication (labeled STAT) is red when a transmission via the modem is active. Additionally, this LED flashes once red after a new start i.e. power reset. You can use this when you are in the office and want to see what is currently going on.

OTT ecoLog 1000 Water Level Logger

With this you can send a sms to the ecoLog 1000 and change some parameters e.g. transmission interval, details can be found in the manual of ecoLog 1000.

OTT ecoLog 1000 Water Level Logger

Click on “Click for available actions…” next to the level or depth to water measurement (M1 on top), you will be asked to calibrate which allows you to enter the reference value.

OTT ecoLog 1000 Water Level Logger

No, the data is in nonvolatile storage and will remain there even if no power is applied. If the battery is too weak for transmissions, it will stop transmitting but has enough reserve power to continue to measure at least another ten thousand values. Measurement data will not be lost and with the continued measurements the exchange of the battery can be planned. After installing a new battery, the data not previously transmitted will be transmitted and no gaps will occur on the server.

OTT ecoLog 1000 Water Level Logger

If you connect the Z400 to your PC via USB, it will act like a memory stick, so you will see several files. Open the file Z400.exe will enable you to access all settings easily. If you ordered a Z400 with velocity option you can enter also the equations for up to 30 mechanical current meters. But if you ordered the simple Z400 version, the program will ask you for the 'Key Code' to enable this feature. Since this feature is not for free, please contact your OTT sales representative to order the ‘Key Code’.

OTT Z400

Not possible in current version, ecoLog 800 is still available.

OTT ecoLog 1000 Water Level Logger

You can source it only at OTT HydroMet. The whole system is tested and certified with OTT HydroMet components and only in this way we can guarantee the safety and functionality of the device.

OTT ecoLog 1000 Water Level Logger

Yes, both systems can run in parallel on different servers and with different transmissions.

OTT ecoLog 1000 Water Level Logger

“Refresh Status” refreshes the view, reads and displays always the last stored values from the ecoLog 1000 as configured in M1-M5. “Measure All” performs an actual measurement and displays these values.

OTT ecoLog 1000 Water Level Logger

One desiccant is for the capillary in the cable and one for the housing. We recommend changing them regularly, also see the manual.

OTT ecoLog 1000 Water Level Logger

No, it's not possible to connect further sensors, because the OTT ecoLog 1000 is a complete system, which allows only sensors from OTT ecoLog 1000 to be connected.

OTT ecoLog 1000 Water Level Logger

OTT ecoLog 1000 is a device which features mobile/cell communication, an option without telemetry is not planned.

OTT ecoLog 1000 Water Level Logger

Please contact our HydroService with the following information:

• Which work steps did you perform before the message appeared?
• Search the file Hydras3.elf and send it to the HydroService. The file is either in the program directory of Hydras 3 (where the file Hydras3.exe is also located) or under C:\User\<user>\EurekaLog\Hydras3.elf

OTT Hydras 3 net

OTT Hydras 3 Basic

Ammonium

• Range: 0 to 250 mg/L-N
• Accuracy: +/- 10% or +/- 2mg/L-N, whichever is larger
• Temperature range: 0 to 40 °C (non-freezing)
• Not recommended for measurements less than 2mg/L-N

Nitrate

• Range: 0 to 250 mg/L-N
• Accuracy: +/- 10% or 2mg/L-N, whichever is larger
• Temperature range: 0 to 40 °C (non-freezing)
• Not recommended for measurements less than 2 mg/L-N

Chloride

• Range: 0 to 18,000 mg/L
• Accuracy: +/- 10% or 5mg/L, whichever is larger
• Temperature range: 0 to 50 °C (non-freezing)
• Not recommended for measurements less than 2 mg/L

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

No, it is a different module with different electronic and interface.

OTT ecoLog 1000 Water Level Logger

Ammonium (NH4+) and nitrate (NO3-) are ionized forms of nitrogen. Nitrate is related to ammonia in that bacteria colonies convert ammonia and ammonium to nitrite and then to nitrate. This final nitrate stage is the least toxic to water life. Ammonia has two forms - the ammonium ion, and the unionized, dissolved ammonia gas (NH3). The form depends on pH, with ammonium predominating when the pH is below 8.75, and ammonia  redominating above pH 9.75. Total ammonia is the sum of ammonium and ammonia concentrations. Ammonia is very toxic to water life, ammonium is less toxic.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

The ISE sensors are best suited for spot monitoring activities. These sensors drift more than other sensors and are not well-suited for long-term deployment. Do frequent QA/QC and calibration on ISE sensors, especially ammonium and nitrate, if they are to be used for extended deployment.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Ammonium:

• Can suffer interferences from other ions, especially sodium, potassium, and magnesium. These can reduce your accuracy.
• Specific conductivity of less than 1000 uS/cm.

Nitrate:

• Can suffer interferences from other ions, especially chloride, bromide, bicarbonate, perchlorate, nitrate, and chlorate. These can reduce your accuracy.
• Specific conductivity of less than 1000 uS/cm.

Chloride:

• Can suffer interferences from other ions, especially bromide, iodide, cyanide, silver, and sulfide. These can reduce your accuracy.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

• Rebuild the reference if needed, and calibrate conductivity and pH before calibrating any ISE sensor.
• Calibrate ISE sensors with standards that either bracket your expected measurements or that are close to what you expect to measure.
• The ISE sensors need frequent maintenance and calibration compared to other water sensors. ISE calibrations do not last as long and will drift faster. Bio-fouling and water conditions will affect maintenance and calibration frequency. A difficult to calibrate ISE sensor indicates that it needs to be replaced.
• Before calibrating a new sonde with ISE sensors, soak the sensors in the calibration cup with a high conductivity standard, like 47.6 mS/cm, for 2 to 4 hours to condition the reference electrode. When the reference mV is stable, it is ready.
• Soak a new ISE sensor in any of its standards overnight to condition it. It will calibrate more easily.
• To calibrate an ISE sensor reliably will take a minimum of 20 minutes per sensor. ISE sensors need more time to stabilize than other sensors during calibration as well as during measurements in the field.
• For best results, calibrate the ISE sensor at or near the water temperature it will be sampling. In any case, be consistent in your calibration temperatures.
• When calibrating sensors, it is important to use deionized (DI) water to rinse between calibration steps.
• If at all possible, use a stir plate to calibrate ISE sensors. Keeping the standard well-mixed improves calibration stability.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

• When installing, be sure to calibrate pH and conductivity first and then ISE sensors as a best practice.
• Sensors work best in flowing water. We recommend choosing a site in a location with good water flow to ensure movement of water over the sensor.
• After placing the sonde in the water, allow several minutes for the sensors to stabilize for consistent measurements.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Minimum requirements:

• Dual core processor with at least 2 GHz
• 2 GB RAM
• HDD or SSD with at least 60 GB
• Operating system: Windows Server 2012 R2 or later, alternatively Windows 7 (32- or 64-bit) or later

Recommended requirements:

• Dual core processor with at least 3 GHz or quad core processor with at least 2 GHz.
• 8 GB OF RAM
• HDD or SSD with at least 80 GB
• Operating system: Windows Server 2016 or later

OTT Hydras 3 net

OTT Hydras 3 Basic

Always save an export of the configuration, the diagnosis file “Diagnostics” -> “Save Diagnostics…” and the “Event log…” (click on the hamburger button on the left top to access this) and send these file - very important! - with the description of your problem to Hydroservice, be as specific as possible.

OTT ecoLog 1000 Water Level Logger

An ISE is an Ion-Specific Electrode. It converts the activity of a specific ion dissolved in water to an electrical potential.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Each electronic device with an internal clock has a time slip called drift. This means the time of the clock is drifting away from the true time. Even though the ecoLog 1000 RTC (real time clock) is quite accurate, it will drift. With SNTP (Simple Network Time Protocol) each time a transmission is done the time is checked on a public server and adjusted if required, this is a no-cost service.

OTT ecoLog 1000 Water Level Logger

Ammonium and Nitrate sensor tips will last from three to six months whether they are stored on a shelf or installed in a sonde. Chloride sensor tips may last a year or more in the same conditions.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Maximum of 15 meters for all ISE sensors. If deployment exceeds 15 meters, the ISE sensor must be removed and a dummy plug (included with sensor) must be installed in the sensor adaptor or the sensor will be damaged.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

Use no tool. It is sufficient and recommended to tighten the connector by hand.

OTT ecoLog 1000 Water Level Logger

Use Ammonium and Nitrate sensors in fresh water whose specific conductivity is less than 1000uS/cm. Sodium is a major interference for Ammonium and Chlorate ions are major interferences for Nitrate activity. Chloride sensors suffer interferences when the concentrations of bromide, iodide, cyanide, silver, and sulfide ions are much higher than the chloride ion concentration.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

The online help integrated in Hydras 3 up to version V3.x cannot be displayed by default with current Windows operating systems, because Microsoft does not deliver the required program WinHlp32.exe from Windows Vista on. This program must be downloaded from the Microsoft website to use the online help. You can find the appropriate support page (Microsoft) to solve the problem at the following link: https://support.microsoft.com/de-de/kb/917607. Hydras 3 version V4.x now includes an HTML version of the help, which is displayed without further ado. Please note that it is a context sensitive help, which displays the appropriate help page for a mask in Hydras 3 by pressing the F1 key.

OTT Hydras 3 net

OTT Hydras 3 Basic

This is on purpose to identify the transmission as a test transmission.

OTT ecoLog 1000 Water Level Logger

The reason for this error message is the stricter security requirements starting with Windows Vista. By default it is not allowed to create or modify files in the folder C:\". By default the NET DIR setting, which is required to synchronize multi-user access to the Hydras 3 database, is set to C:\. There are the following possibilities to work around this problem under the current Windows operating systems:

1. One possibility is to set the NET DIR to a directory where you have full permissions. To do this, you need to open the BDE Administrator in the Control Panel and on the Configuration page, click on the node: "Configuration | Drivers | Native | Paradox node and select NET DIR" on the right side. By clicking on the "..." button you can now select a directory. For example, you can select the personal directory for the user, for example C:\Users\ABC, where ABC stands for the user's login name. If Hydras 3 is used in a network with several installations, the workspace is usually located on a file server. Typically, in this case the NET DIR is placed in the workspace directory, since all Hydras 3 users need full write access to this directory anyway.
    
2. Create a shortcut to the file Hydras3.exe and add the target as follows "C:\Program Files (x86)\OTT\HYDRAS3\Hydras3.exe" netdir=C:\Users\ABC.
   This procedure is also suitable for starting a laptop with a shortcut in a network environment (with shared NET DIR for all computers) and in the field (local use) with another shortcut. It is nevertheless advisable to additionally set up solution A) for the standard case.

   After adjusting the NET DIR setting, all *.lck files should be deleted manually if necessary. The *.lck files are located in the workspace directory and in the individual station directories below. These files are only created temporarily when a database table is accessed. If there are no such files, this is OK. If all Hydras 3 instances are terminated and such files are there, they should be deleted.

   Additionally you should check at this opportunity whether there are files in the station directories, which start with TDB.... These files are created during import, update of virtual sensors and especially during editing. So if all Hydras 3 instances were finished correctly, they should no longer exist. If there are still instances, they should be deleted, otherwise the import of data into these sensors will be blocked

3. Run Hydras 3 with administrator rights (right mouse click on Hydras3.exe -> Run as administrator). Windows will then ask if you want to allow this. You must then click on "Allow" accordingly. Probably your IT department will not want to give you the permission permanently. Therefore it is better to use solution 1. or 2.

OTT Hydras 3 net

OTT Hydras 3 Basic

Maintenance windows are not available anymore because a dial in via a modem (CSD) is not possible anymore. This is not supported by 4G (LTE) and will be or is already discontinued for GSM/GPRS by the most providers as well.

OTT ecoLog 1000 Water Level Logger

We recommend using a stir plate, if you have one, during calibrations as a best practice to ensure an equalized standard.
Constantly stirring ensures a set consistency for the liquid.

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde

General

• F1: Context-sensitive online help
• F2: Options dialog (can be activated from main window + graphics window)
• F3: Language switching (main window)
• F5: Arrange multiple graphics windows automatically
• F6: Switch through the open HYDRAS3 windows
• F11: Rezoom by one step (in main window from map, in graphics window from graph)
• F12: Rezoom to highest level (otherwise like F11)

Main window

• Ctrl-Alt-D: Delete selected measurement loop including all sensors (measurement loop must be selected in the tree for this)

Graphics window ("Evaluation" of a sensor):

• Ctrl-A: Automatic scaling of the value axis (also for multiple graphics)
• Ctrl-Shift-A: Automatic scaling, but with multiple graphs each graph gets its own axis intercept
• Ctrl-D: Displays information windows for the tag at the current ruler position.In this window the whole day can be deleted via context menu. Additionally, it is possible to edit the momentary extreme values of the day
• 2 x Ctrl-D: Now several days can also be deleted!
• Esc: Closes graphics window
• +/-: (numeric keypad) Scroll time range right/left
• Cursor left/right: Move active ruler left/right

Besides:

• Double-click on start date in the navigation bar: Display the entire time range available
• Click with left mouse button in graphic: Place green ruler, with Shift + left mouse button place blue ruler

Communication window

• Ctrl-Alt-D: Enable debugging (creates H3KTraceX.LOG file in HYDRAS3 path)

OTT Hydras 3 net

OTT Hydras 3 Basic

The following parameters can be measured / detected with the OTT ecoLog 1000: water level (through pressure), water temperature, supply voltage, power consumption, signal strength (humidity in com unit not as parameter but as Meta data in OTTML header).

OTT ecoLog 1000 Water Level Logger

This is done on purpose as it is not possible to maintain active Bluetooth and Modem (TCP/IP) connection at the same time. This is done mainly for security and compliance reasons. Please wait for the TCP/IP communication to complete and then device will be visible and connectable again.

OTT ecoLog 1000 Water Level Logger

If the power source is disconnected longer than 40s the internal clock loses its time and needs to be set via LinkComm.

OTT ecoLog 1000 Water Level Logger

If data is sent to software like Hydras 3 net, the station location will automatically be displayed on the map.

OTT ecoLog 1000 Water Level Logger

1. You need mandatory a Windows 10 OS Release 1607, Build 14393 or higher (Windows 7 or an earlier version will not work!)
2. The internal Bluetooth driver is not current and needs an update; check the webpage of the Bluetooth module manufacturer for the latest version
3. Your PC does not have a built-in Bluetooth module, use an external one, we recommend Delock USB Bluetooth Adapter V4.0 dual mode or try other adapters supporting Bluetooth Low Energy (important still Windows 10 OS required!)

OTT ecoLog 1000 Water Level Logger

HYDROLAB measurement solutions provide these benefits:

• Ruggedized ISE sensors operate to depths up to 15 meters
• Automatic calculation of Ammonia and Total Ammonia concentrations
• User-serviceable reference electrode
• As well as HYDROLAB’s application advice from the customer support team

Hydrolab HL4 Multiparameter Sonde

Hydrolab HL7 - Multiparameter Sonde