2017-10 Battery capacity underestimated

by Beheerder on 12 January 2018 00:50
Since the introduction of the new orange labelled batteries in January of 2017, we have conducted more tests on their performance. From these tests and our experiences we can now conclude that the initial capacity of 240Wh which is indicated on the battery's label is rather conservative. Batteries have shown to contain more energy than first assumed. Tests on the capacity of the batteries are still ongoing and we hope to be able to give you a more realistic view on their capacity soon.
Problem with GPS date

2017-10 DWR4 0.7m

by Beheerder on 11 January 2018 06:55
With the introduction of the 0.7m DWR4 we have had to reconsider the design of the chaincoupling for this buoy. The standard chaincoupling does not suffice because it is too heavy for the relatively light buoy. The eccentric mooring eye in combination with the relatively heavy chaincoupling would unbalance the buoy. To reduce the weight of the chaincoupling, we have decided to use 4 16mm links on the chain instead of the standard 10 20mm links reducing the underwater weight by 50%. With this decision it is important to note that chains for 0.9m and 0.7m DWR4 buoys are no longer interchangeable. The DWR4 0.7m with or without current meter is now available for rent as well.  




Problem with GPS date

2017-03 Compact Air Temperature (CAT4)

by Beheerder on 28 April 2017 02:53
At Ocean Business 2017 we will present the Compact Air Temperature (CAT4) antenna which will provide an accurate air temperature.

Four sensors are integrated in the Flashlight antenna. The first three sensors correct for solar radiation and IR radiation. The fourth sensor is used to detect evaporation of precipitation and/or spray. All these sensors together will provide an accurate Air Temperature measurement.

Problem with GPS date

2017-03 Firmware update

by Beheerder on 26 April 2017 04:32
The upcoming firmware release for the DWR4 /ACM introduces a new message containing the distribution of the upcross wave heights.
Also console functionality is added to enable/disable all transmission links as well as the ACM option for the DWR4 /ACM.
Problem with GPS date

2017-03 Waves4 software update

by Beheerder on 25 April 2017 20:39
The new 4.18 release of the Waves4 software suite will be available in May. This release offers support for iBuoy communication option of the DWR-MKIII, DWR-G and WR-SG.

The configurator is now able to fully configure buoyd and waved; therefore it is no longer required to manually modify the configuration files.
Waves4 has several new widgets: the sea surface temperature parameters, the wave height statistics, and the wave height quantiles packet. The latter two require the DWR4 /ACM to be equipped with the upcoming firmware release.
A new version of the libDatawell software library, v0.28, will be available as well.

Problem with GPS date

2017-03 Flight case for hatchcover

by Beheerder on 23 April 2017 18:49
High quality flight cases are now available for the Waverider hatchcover. These cases guarantee save transport whenever a hatchcover must be returned for firmware upgrade and/or repair.

Problem with GPS date

2017-03 New design DWR-G Unit

by Beheerder on 23 March 2017 08:28
The DWR-G Unit has been re-introduced in a new stainless steel housing. The DWR-G Unit included a RS232 interface and can be installed on your own buoy or platform in order to measure its movement.

The serial port outputs HXV-vectors including wave spectrum and system file, just like the serial output of the RX-C receiver and Wave Unit.

Problem with GPS date

2016-10 2G networks are being shut down

by Beheerder on 10 November 2016 00:20
Some cellular network operators are planning to shut down their 2G networks to re-use the spectrum for more efficient services.
Currently Telstra, Optus (Australia), M1, Starhub, Singtel (Singapore) and AT&T (USA) have announced to shut down their 2G service.
To offer continuity Datawell will introduce a new 3G (UMTS) cellular modem by December 1 for “mobile SMS” and “mobile internet” option users to replace the current 2G (GSM) modems. 
The only thing required for an upgrade is the exchange of the electronics unit. No buoy firmware or PC software updates are required. 
Problem with GPS date

2016-10 Firmware update

by Beheerder on 09 November 2016 16:00

The upcoming firmware release for the DWR4 brings the possibility to switch the HF transmitter on or off.
If your buoy is equipped with an Acoustic Current Meter (ACM), it will be possible to switch it on or off as well.
Also, the power consumption of the GPS receiver will be reduced on the DWR4 equipped with ACM.

Problem with GPS date

2016-10 New design Cunifer mooring eye

by Beheerder on 09 November 2016 07:01

The old design of the Cunifer mooring eye required a Celeron block to separate the stainless steel chain coupling from the Cunifer hull and also to prevent wear of the relatively soft Cunifer.  The Celeron block could be a nuisance when the buoy is transported or put on deck of a ship. Therefore we have designed a new mooring eye that no longer requires the Celeron block. Since the new mooring eye is similar to the stainless steel one, the standard chain coupling can be used on the Cunifer buoy as well.



Problem with GPS date

2016-10 ITB standard in every DWR-9, DWR-G7 and DWR-G9

by Beheerder on 09 November 2016 06:43
The Intelligent Test Box, or ITB, which we introduced several years ago has proved to be very popular. The ITB arranges multiple battery strings to be discharged sequentially, so that only empty strings need to be replaced when the buoy is serviced. Buoys are generally serviced before all battery strings are fully drained.

The batteries may still contain power for a few extra months, though not enough for a new measurement period. Disposal of half empty batteries is a waste of energy. We have now decided to make the ITB a standard part on every DWR-9, DWR-G7 and DWR-G9 as of 1 January, 2017.

The ITB can also be retrofitted in existing buoys. 

Problem with GPS date

2016-10 New battery

by Beheerder on 09 November 2016 06:34

Datacell, our battery supplier, has developed a new non-magnetic battery which contains 20% more energy.

We expect to supply the new battery, type RC24B, beginning of next year.

The battery can be easily recognized by the orange label. 

Problem with GPS date

2016-10 Swivel terminal

by Beheerder on 09 November 2016 06:25
Some years ago Rijkswaterstaat (Dutch Authorities), which have about 50 Waveriders

operational in the Dutch waters, reported a number of twisted moorings in the Wadden Sea

despite the swivel in the chain coupling.

Although the Wadden Sea, being an intertidal zone where buoys may run aground, is a special case, we decided to dive into the problem. This has resulted in the swivel terminal.

The new terminal includes a swivel which, in combination with the chain swivel, provides enough

freedom for the mooring line to prevent entanglement.

5+ years of experience with the swivel terminal teaches us that the problem has been solved.

Since the introduction, Rijkswaterstaat has not had any twisted moorings.

Since other customers have reported similar problems, the new terminal is now available to all

Problem with GPS date

2016-02 Iridium/GSM Internet in the Waves4 software

by Beheerder on 01 March 2016 00:38
Waves4 (version 4.14.0)
Waves4 has been updated to support the new Internet communication options of the DWR4.
The configurator program allows the user to configure the communication settings of the buoy, also during deployment.
It also has an interface to request historical messages and files from the logger card.
The Waves4 program displays the data acquired from the buoy in the same fashion as the existing communication options.
The Datawell library (version 0.22.0)
The Datawell library has been updated to support the new Internet communication options.
The specifications of the communication protocol between the buoy and Waves4 have been added
to the library. For developers who wish to develop their own software for the Internet communication option,
the library contains various new functions.
Problem with GPS date

2016-02 Iridium Internet and GSM Internet for the DWR4

by Beheerder on 01 March 2016 00:35
The DWR4 can now be supplied with Iridium Internet or GSM Internet (GPRS) as an alternative
communication option or tracking device. With this communication option the buoy will be able
to transmit its data via the Internet directly to your Waves4 server.

How it works
The buoy will try to establish a connection to the Internet at a predetermined
rate using a dial-up connection. The dial-up interval can be chosen between 30 minutes and 24 hours.
Once the Internet connection is established, the buoy will connect to your Waves4
server to deliver its data. Generally, this data will be DMF messages, like heave spectra,
GPS positions, etc. In addition, downloading historical messages and raw data from the logger card
is enabled as well.
Problem with GPS date

2016-02 DWR4/ACM in a 0.7m diameter

by Beheerder on 28 February 2016 03:03


In 2012 we introduced the DWR4 with Acoustic Current Meter which has now been embraced by the oceanographic community worldwide.This is a 0.9m diameter version with a battery life of 16 months.

At the upcoming Oceanology International in London on 15-17 March we will introduce a 0.7m diameter version which will be much easier to handle and will also be lower in price.

The specifications are identical except for the hull size and battery life which will be 8 months. Battery life can be extended by a solar panel.

The DWR4/ACM 0.7m will be available later this year. 



Problem with GPS date

2015-10 Calibration interval for sensor-based Waveriders

by Beheerder on 23 November 2015 01:30

The calibration interval for sensor-based Waveriders has always been 3 to 6 years after purchase or last service and calibration check. With years of experience we are now confident to change this interval to 6 years.

All information and statistics we have collected over the past years justify this new calibration interval. 

Problem with GPS date