Topicalities 36Eijkelkamp Agrisearch Equipment, April 2010

Water Eijkelkamp installs 86 measuring points for

Rijnland District Water Control Board

Product Info

Chinese delegation visits Eijkelkamp

Climate Special

Eijkelkamp is a socially responsible business

China and the Netherlands join forces

Infiltration and permeability measurements

included in training programme

Eijkelkamp supplies equipment for project

in Romania

Trade fair news

Eijkelkamp keeps ISO-9001 certificate

Diver news: the new CTD-Diver

North German water works company

purchases Divers and e-SENSE monitoring

well modem

CLIMATE SPECIAL

Chris van Vliet (team leader of Sample Taking at HHRS of Rijnland) explains why this project was carried out: “The most important aim of the project was to provide more insight into the polder levels. Up-to-date information on basic levels was already available from the existing ‘bosbo’ system, which is necessary in order to be able to regulate the water system management in case of rain or drought. The possibilities for regulating have been increased considerably now, which is of particular importance for short, heavy, often very local rainfall. The Rijnland District Water Control Board is now better able to satisfy its ‘dry feet’ objective, which is very important in a densely populated area like the Randstad conurbation.”

Besides the supply of the necessary e+ WATER L® (surface water) sensors and e-SENSE ® (telemetry) modems, Eijkelkamp also took care of the other tasks in the field. These tasks consisted of, among others, dredging and surveying all the level reference points and the complete installation of the equipment. The project was handed over, fully operational, in June 2009.

In combination with the e-SENSE telemetry system, measurement data and any alarm signals are sent directly to the central Rijnland

database using the GSM network. Thus it is possible to monitor and manage water levels from a distance and over a longer period of time. Alarms warn the water level controllers at an early stage for impending inundations or water levels that are too low. Trends are also revealed and, in part as a result of this information, it is possible to estimate the fluctuation of surface water in the future.

According to Chris van Vliet, high demands were made of the equipment: “In addition to a warning system in case of theft, low energy consumption and low maintenance were also important. It was possible to satisfy all these requirements, and as a result a low-maintenance system was installed that is very frugal in its energy requirement. This was important, not only in view of ‘business security’, but also in order to keep the costs low. Many measuring points are located in out-of-the-way polders, where regular visits would involve a heavy financial burden for this system. Now just a single annual visit will suffice.”

Eijkelkamp has recently been awarded a follow-up commission from Rijnland for installation at even more locations.

In May 2008 Eijkelkamp Agrisearch Equipment BV obtained the commission through a tendering process for the installation of 86 surface water level measuring points. The project was carried out by order of the Rijnland District Water Control Board and was called ‘Water Level Measurement Network Polder Monitoring Areas’.

Eijkelkamp installs 86 measuring points for Rijnland District Water

P r o d u c t I n f o

The intelligent and accurate Eijkelkamp e+ WATER L sensors are used for measuring and registering levels and temperatures of surface water. The sensors can be configured and read out in various ways:- Using the e+ CONTROL®, this is used whenever the e+ WATER L

cannot be brought within the proximity of a PC (laptop).- A universal readout unit, this is used in combination with a PC

(laptop).- Using a Direct Data Cable (DDC) available in various lengths up to a

maximum of 200 metres.- Using an e-SENSE modem (telemetry).

e+ WATER L® specificationsDiameter: 22 mmLength: type dependent (from 85 to 235 cm)Weight: type dependent (from 1.0 to 2.2 kg)Working area temperature: -20/+80°CWorking area humidity: 0/100%Casing: ss 316LMeasuring level range: 0-200 cm water columnAccuracy level: 3 mmResolution level: 0.1 cmTemperature measuring range: -20/+80°CTemperature accuracy: 0.5°CTemperature resolution: 0.01°CBattery: 3.6 V / 2.3 Ah Lithium (replaceable)

09.02 Laboratory permeameters for water permeability measurements

Water engineering and land management projects are often preceded by a geohydrological study, as the water permeability of soil depends to a large extent on how efficiently an irrigation or a drainage system works. Determination of the saturated water permeability, both horizontally and vertically, can be carried out on location in the field or in the laboratory with a laboratory permeameter.

It is possible to make laboratory permeameters in any desired size. This size depends on the number of soil samples of which one would like to determine the saturated water permeability at any one time. Versions can be supplied with series of 5 to a maximum of 25 samples. The permeameters are suitable for soil sample rings with an internal diameter of 50 or 56 mm. An open or closed system can be used. A storage container, a water pump and a filter are supplied with the closed system.

New: 09.03 Hauben Water Permeameter

Eijkelkamp developed the Hauben Water Permeameter in cooperation with Prof. Dr. Rainer Horn, of the Christian Albrechts University in Kiel (Germany). This permeameter measures water permeability in an undisturbed saturated soil sample.

The measuring method is based on the ‘falling-head method’. In this a diminutive water column is placed over the saturated soil sample (in order to create slight pressure) and then the speed with which the water flows through the soil sample per unit of time is observed.

Standard, the Hauben Water Permeameter is suitable for soil samples with a diameter of 50 and 56 mm (sample rings with a diameter of 53x50 mm and 60x56 mm).

P r o d u c t I n f o

Chinese delegation visits Eijkelkamp

18.55 Flow-through Cell

In order to improve the precision of in-line measurements of, for example, pH, redox, soil electrical conductivity, T or O2 one can use a flow-through cell. A flow-through cell consists of a transparent chamber, through which water flows in a constant stream from bottom to top. The electrodes take measurements in water that has not yet come into contact with air. Various separate or combined electrodes can be placed in the flow-through cell, which is easy to disassemble and to clean. This type of flow-through cell has a flow-through speed of around 3 l/m and an own volume of 950 ml.

Minister Zhou Shengxian of the Ministry of Environmental Protection of the People’s Republic of China (MEP) and Minister Jacqueline Cramer of the Ministry of Housing, Spatial Planning and the Environment (VROM) signed a ‘Memorandum of Understanding’ (MoU) on 10 November 2008 in Beijing. One of the annexes to the MoU concerns reciprocal cooperation in the field of soil protection, soil management and soil remediation.

Following on from this cooperation two projects have been started. One of these two projects comprises a training course for around 70 Chinese soil officials from the MEP, local Environmental Protection Bureaus from all the provinces and two research institutes. As part of this process a course was given in Beijing during the period 16 - 20 November 2009 by representatives of, among others, VROM and the Dutch National Institute for Public Health and the Environment (RIVM).

A second training session took place in the Netherlands from 17 - 27 January. A dozen soil officials followed an extensive and practically orientated training programme concerning soil protection, soil management and soil remediation. During this session the delegation also visited Eijkelkamp, because of the available expertise on sediment, soil and groundwater sampling. Here the emphasis was laid on the correct methods of sample taking, which is essential for a precise and reliable analysis.

The organisation can look back on a successful training course. Eijkelkamp have had great pleasure in making a contribution towards this.

18.56 Flow-through Cell Compact

The Flow-through Cell Compact has been developed in order to restrict further the quantity of water that flows through the cell, thus raising the flow-through speed. The reaction speed of the measured parameters is increased considerably by this, so that the cell is exceptionally suitable for low flow purging. From a very low flow rate a decrease in the oxygen content, which indicates that sweet, anaerobic ground water is penetrating the cell, is detected immediately. This speeds up the preliminary pumping process significantly. The dead volume of the cell, without probes, comprises around 250 ml. The narrow diameter ensures sufficient upward speed to carry out careful measurements for all parameters. Smart foldaway legs enable easy transport and fast and effective installation in the field.

For more information, the advantages or personalised advice concerning our flow-through cells, contact our sales team or visit www.eijkelkamp.com.

Alma de Groot is postdoc (university researcher) and is concerned with ‘ecologically optimised sea walls’ as part of the research programme Sea and Coastal Zones. This looks into the hypothesis that extra sand that is used as beach nourishment for coastal protection can strengthen the Dutch dunes by wind transportation. Besides the wind, plants play an important role in this process.

Alma de Groot talks about the reinforcement of the dunes: “First of all, it is really not always necessary. It varies from place to place. In some places the dunes are wide and firm. In other places coastal erosion is strong and in time the dunes would be at risk, while they are very important for protection against storms and also for nature preservation. In order to prevent the erosion of the beaches and dunes, sand is sprayed onto the coast (‘beach nourishment’). The wind can spread this sand and blow it towards the dunes. It is deposited there so that the dunes are raised. In the Netherlands a lot of work is done with dynamic coast management. With this you allow the natural dynamics of wind and water within safe limits. You also take measures to adjust the process if necessary. Beach nourishment and the natural raising of dunes are good examples of that.”

Vegetation also plays a part in dynamic coast management. Alma de Groot explains: “Without plant growth we would no longer have dunes as we know them now. Vegetation restrains the wind and ensures that sand is deposited and held. It is a natural process and therefore important for dynamic coast management. Climate change makes sea levels rise and gives rise to more storms. These cause the erosion of beaches and dunes to increase. Furthermore, CO2 emissions, changing rainfall and temperatures might influence plant growth and therefore the development of the sand dunes. With my research I hope to demonstrate that this really is the case.”

Which equipment is used during the research: “I am going to construct a computer model of dune formation and the development of vegetation. So I’ll be in front of the computer most of the time. However, field observations will also be necessary. Whether I’ll be using Eijkelkamp equipment for that, like a meteostation, saltiphone or a rainfall simulator, is hard to say at the moment. During my doctorate I did a study on the silting up of tidal marshes. For this I worked a lot with a small Eijkelkamp ground auger. So, should I need equipment in my current research, I know where to find you.”

Photo: A.V. de Groot

CLIMATE

SPECIAL

Mitigation and adaptationThe term ‘mitigation’ means the measures taken to prevent climate change. For example, reduction of CO2 emissions, reforestation and management of peat land (whereby the emission of the greenhouse gas methane is reduced). Adaptation concerns learning to deal with the consequences of changes in the climate. Here climate changes are seen as an irreversible fact.

Adaptation to climate change“Global warming isn’t having much effect.” This remark was heard frequently this past winter. The Netherlands was covered by a layer of snow for weeks and had to deal with long periods of frost. The forecasts by scientists that the winters would become milder didn’t apply this time.

The Intergovernmental Panel on Climate Change (United Nations climate scientists) have found out that, since 1900, temperatures have risen around the world by an average of 0.8 °C. In the Netherlands that is even 1.6 °C. For the staff and students of Wageningen University the existence of global warming is not a subject for debate, despite the commotion that has arisen as a result of small inaccuracies in the IPCC report. At this university, focussed on Life Sciences with courses relating to, among others, nature, climate and living environment, plenty of research is being done and education is provided concerning climate change.

This sector has undergone necessary changes over the years. Whereas researchers were initially focussed on the weather, the atmosphere and the oceans, these days land and the use of land are just as important.

In this Geijkt Nieuws special four staff members and students of Wageningen University, who are all occupied with research and teaching adaptation to climate change, will say a few words.

Dr. Saskia Keesstra is University Lecturer at the chair group Land Degradation and Development and very busy with education on climate change. Together with a few colleagues, she set up the Bachelor Minor course ‘Climate Change: Mitigation and Adaptation Strategies for Society’. In addition, she is coordinator of the course ‘Adaptation to Climate Change in Developing Countries’, which was given for the first time this year

“In developing countries agriculture is often carried out in areas where it is always going to be a marginal activity. As soon as changes take place in the climate this gives rise to problems. People sow at a certain time. Then there is irregular rainfall or the rainfall is too intensive, which can cause a harvest to fail. Often the problem is not even that there is too little rainfall.”

“Developed countries have both the technological and the financial means to defend themselves against such climate change, developing countries don’t. In the ‘Adaptation to Climate Change in Developing Countries’ course, students learn to make models with which you can predict what impact climate change has. In addition, they will devise adaptation strategies for water and land management. For example, are there any methods that can be applied to ensure that the soil that one is using to grow crops does not degrade any further? The aim is to make developing countries less vulnerable.”

“Up to now 11 students have signed on for this subject. We expect to get between 15 and 20 registrations in due course. Incidentally, it is not possible to implement field activities in this subject, so the students will not be using Eijkelkamp equipment. Other courses do work with it. ‘Physical Aspects of Land Management’ makes use of soil humidity sensors, Trimes (measure and record soil humidity and temperature) and all kinds of drilling stuff. Besides that, Eijkelkamp equipment is used to the full during research.”

Climate change can lead to less rainfall. As a result of the ensuing drought, the risk of forest fires increases. Cathelijne Stoof, who is soil expert and PhD student at the chair group Land Degradation and Development, is studying the effect of fire on soils and hydrology. For the investigation, a Portuguese shrub catchment of 10 hectares was completely burned by controlled fire, the first experiment on this scale.

“Before, during and after the fire we took various measurements, such as precipitation, run-off, soil moisture and temperature. During the fire, the flames were 900 °C, the soil surface was 100 °C and the soil at a depth of 1 cm was only 25 °C. Because the soil remained relatively cool, the impact of the fire on the soil was only minor. However, fire does have a large effect on the vegetation. It often burns away completely, which can have a considerable impact on the hydrological cycle. In unburned situation, shrubs intercept a large part of the rainwater. With the vegetation removed by fire, suddenly a lot more water needs to find its way to the water courses, either above- or belowground. In addition, soils can become water repellent during the fire (because of the heat) or after the fire, because of increased soil drying after vegetation removal. As a consequence, surface runoff occurs that causes a rapid spike in the river flow. This can lead to possible flooding.”

“For the study I used Divers® by Schlumberger Water Services in order to measure the water levels in streams. I also used a small arable land auger a lot to determine soil water repellency in depth and to measure soil depth in the catchment. During my fieldwork in Portugal I had frequent contact with Eijkelkamp. After a while they knew exactly who I was and what I was doing.”

Ultimately Cathelijne Stoof hopes that her research will provide insight into which strategies are the most suitable for preventing flooding and erosion after forest fires: “Our experimental fire took place in the winter. As the soil and the litter were still quite moist, the impact on the soil was only slight. Fire can considerably degrade the soil when soil temperatures are high (such as in summer fires), but our research shows that even if the soil is not damaged, fire can have considerable hydrological impact because of vegetation removal. So, after a fire it is important that plant cover returns as quickly as possible.”

Photo: L. Stroosnijder

Photo: C. Stoof

areas, or precisely the non-sensitive areas. Hopefully we will then be able to provide guidelines, at a later stage, to see to what extent a certain adjustment in the management is an option, or whether a change in the use of the land is necessary. During the study Divers® are used. And Eijkelkamp peristaltic pumps and rain meters are also used. To our complete satisfaction.”

Sara Eeman is trainee assistant at the chair group Soil Physics, Ecohydrology and Groundwater Management. Sara is currently studying the effects of a possible rise in the sea level and decreased river run-off on a number of small (field scale) freshwater lenses, in the West of the Netherlands.

“There is salt water underground in the entire West of the Netherlands (fossil sea water). That is a consequence of the floods that have taken place over the past 10000 years (since the Holocene, the last ice age). Where the land surface is under sea level, like in the polders, this water can rise. Using water level management, the water authorities ensure that the polders are not inundated, but that cannot prevent that salt can come close to the surface (i.e. the root zone, where crops have to obtain their water), as that is principally prevented by a thin layer of fresh water, formed and maintained by rainfall. Therefore that layer, which forms a kind of ‘lens’ between the ditches and trenches, is very important for agriculture. In the future it will certainly have to be managed as well as possible.”

“However, the management of freshwater lenses is difficult because the ground water system is so dynamic. There are a number of factors that can influence it. For example, fossil sea water moves slowly towards the polders and other low-lying areas. In addition, climate change will cause the sea level to rise as a result of which more salt will come up. Up until now the Rhine has ensured that the ditches are provided with the required freshwater. But will this still be true in the future, when the glaciers melt in the Alps?”

“To date, the study has provided quite a good insight into freshwater lenses under all kinds of constant conditions. We are still busy charting the influence of changes (speed and size). Once we know more about this we can draw conclusions that could be important for farmers. Incidentally, we make the analyses as general as possible, so that not only the Netherlands can profit, but also all low-lying areas where salt seepage from below plays a part. Obviously there are climate differences, but we must be able to show the essentials.”

“Ultimately we would like the study to help chart the possibly sensitive

CLIMATE SPECIAL

P r o d u c t I n f o

Eijkelkamp Training & Consultancy provides

product training in which the correct way of

using, for instance a compact meteo station,

is the key element. Feel free to ask about the

possibilities.

16.97 Compact meteo station The compact all-in-one meteo station is an ideal and affordable system for environmental and agricultural research. It contains high quality sensors for measuring rainfall, solar radiation, wind speed, wind direction, air humidity and air temperature. The station can be set up in a few minutes, is easy to transport and requires minimal maintenance. The alkaline battery ensures that the station is operational for 6 months. The optional lithium battery assures even greater longevity.

Data is stored in a powerful Data Logger. This reliable and accurate logger is waterproof (IP67) and can store over 600,000 measurements. This logger comes standard with a software package. With this it is easy

to check the functioning of the sensors and the interval settings. You can also use it to look at data and download it. The data can be remote downloaded using a GSM Modem communication system or PDA. Both possibilities are optional.

04.23.SA / 04.23.SB Sediment sampler, type: Beeker For the fast and excellent taking of samples Eijkelkamp developed the sediment sampler, type Beeker. This is an improved version of the Beeker sampler. Now the piston can be operated directly with a lever, so that the sample can be pushed out of the appliance and into the sample bucket. In addition, the clamping bands have been replaced by rigid steel strips. These hold the appliance together better and ensure that the clamping bands, hose and cable no longer get mixed up.

Eijkelkamp has a basic set (04.23.SA) and a comprehensive set (04.23.SB). The basic set consists of: a transparent tube of 1 or 1.5 m, a piston with a piston rod and a battery powered pressure and vacuum pump fitted with an extension hose. A hammer and extensions, a non-stretch cord, sample bucket and a brush are also part of the standard equipment. The comprehensive set is completed with an unloading and dividing system, in order to take out and describe the sample in a refined and accurate manner.

e-SENSE and e+ RAINMeasuring with and managing of sensors and loggers is increasingly taking place from a (considerable) distance. In order to set up equipment, read it out and, if necessary, make adjustments from a location of choice, Eijkelkamp has developed the e-SENSE® telemetry measuring system. This gathers measuring data using intelligent sensors such as the Diver® by Schlumberger Water Services or e+® sensors. It doesn’t only take measurements in the field, the sensors also store the data internally independently.

One of the types of e-SENSE sensors is the e+ RAIN®. The standard e+ RAIN set consists of the e+ RAIN logger and the plastic and metal e+ RAIN rain meter. The e+ RAIN logger measures the rain intensity over particular periods and totalised quantities (integrator function).

Users can set the measuring periods themselves, making it possible to measure both the peak intensity and the rainfall averages over longer periods. Because of the integrator function it is simple to determine quickly how much rain fell in a particular period. The e+ RAIN logger is capable of reacting to the exceeding of pre-set limits with an alarm, which can, with the e-SENSE system for example, be forwarded to the user. The e+ RAIN logger has a storage capacity of 2 x 30,000 measurements. The e+ RAIN sensor can be configured and read out in various ways.

Photo: S. Keesstra

CLIMATE

SPECIAL

Produc tInfo

Three universities from China: the Xi’an Centre of Geological Survey, China University of Geosciences in Beijing and the Hohai University in Nanjing have set up the Asian Facility Project in cooperation with the UNESCO-IHE Institute for Water Education in Delft and Eijkelkamp Agrisearch Equipment. The aim of the project is to develop teaching modules for hydrological/ecological research that can then be taught at universities in China. The demand for experts in the field of hydrology has arisen from the enormous economic growth that China is experiencing. During building projects the consequences for water systems and the ecosystem are sometimes overlooked. And then there is the fact that around 50% of China consists of low-rainfall areas. A balanced water and ecosystem is of great importance and water cycle professionals are necessary to ensure this.

Besides the necessary theory lessons, the students will also be given practical schooling by going into the field. Cor Verbruggen, trainer at Eijkelkamp Training & Consultancy, went to China together with Prof. Zhou of UNESCO-IHE at the end of 2009 in order to look for suitable test areas. A number of Chinese students and staff from the universities came to the Netherlands in February 2010 under

the auspices of the project, to get extra training. In May, Cor Verbruggen will travel to China again to arrange various courses. These courses will be aimed at charting a catchment area in relation to its water and ecology. The project runs until 2012 and during this period Eijkelkamp Agrisearch Equipment will supply the required know-how and equipment for monitoring groundwater, surface water, soil water and water quality.

14.65 Trime-PICOThe Trime-PICO soil humidity measuring system is a complete solution for measuring and registering soil humidity and temperature. The system makes use of the advanced and accurate Time Domain Reflectrometry technology (TDR). TDR measuring technology measures with greater accuracy than the FD measuring technology and is also suitable for other media than soil (for example substrates or foodstuffs).

PICO sensors can be supplied in various types, the system is transportable and the measurements can be read out and stored in the Bluetooth module (including software). The system is specially designed for use in the field under the most extreme circumstances. Communication between the Bluetooth module and a PDA is possible to a maximum of 10 metres.

Corporate Social Responsibility (CSR) involves entrepreneurship that keeps the principles People, Planet and Profit in mind. Put another way, how can you achieve a healthy business result without losing sight of people or the environment? The Ministry of Economic Affairs set up CSR The Netherlands in 2004. This knowledge and network centre supports and encourages entrepreneurs in CSR activities.

Eijkelkamp was engaged in corporate social responsibility before it had been given a name. Naturally, there is no other way for a company that supplies, among others, products for environmental research. And so the lamps always go out in the logistics centre during breaks. Shredded paper is reused as packing material for shipments. But also when buying new copiers, for example, or when getting an energy contract, sustainability is discussed.

Besides the environmental aspect, Eijkelkamp also attaches great importance to the wellbeing of the employees in and outside the workplace. There is an active no smoking policy. Participation in a cycle plan is possible, as is teleworking. Furthermore Eijkelkamp promotes participation in courses and training, both on site and externally.

In the coming years Eijkelkamp will continue giving a healthy dose of attention to this style of entrepreneurship, which is good for society, the environment and, of course, the organisation itself.

Eijkelkamp is a socially responsible business

China and the Netherlands join forces

There are different methods for carrying out permeability or infiltration measurements. One method is more complicated and/or accurate than another, and each method has its advantages and drawbacks. You can only choose the right method if you understand the various ways of measuring and can apply them. For this reason Eijkelkamp Training & Consultancy (ETC) has extended the training programme with the Infiltration and Permeability Measurements course.

The following subjects are discussed during the course:- Infiltration and permeability.- The operational principles of the different methods.- The use of different types of equipment for measuring permeability or infiltration capacity.- Calculating the K-value and infiltration capacity.

See www.eijkelkamp.com for up-to-date course details in the Training and Consultancy section. Would you like personal advice, more information or to participate in a course, please feel free to contact the ETC team. They will be glad to help you. Call 0031 (0)313 880 200 or send an e-mail to etc@eijkelkamp.com.

Romania became a member of the European Union in January 2007. As a consequence, the Romanian Ministry of the Environment set up the Integrated Nutrient Pollution Control Project. The aim of this project is to help the Romanian government to satisfy the European Directives concerning nutrient run-off by: - Decreasing water pollution by nutrients.- Creating awareness in the Romanian population on the importance of

this topic.- Increasing knowledge of this subject among the agencies concerned.

Nutrients come from various sources. They can come into being naturally as a result of the erosion of stone and soil in a catchment area. However, society is also responsible, and to a large extent. More and more people live close to rivers, causing increasing amounts of nutrients to end up in the water. For example from water purification installations, run-off from land during rainfall in urban areas and from agriculture. With pollution by nutrients, large quantities of these, mainly hydrogen and phosphor, end up in the water. Ultimately this can lead to serious problems, such as an insufficient level of oxygen in the water.

The Romanian distributor of Eijkelkamp IFA Grup, the company Novaintermed from Bucharest, and Eijkelkamp have combined their store of knowledge and experience. As a result, they have been able to make a significant contribution to the achievement of the set targets of the project.

Because of this cooperation they were able to provide high quality products in combination with giving advice and training on location.

Eijkelkamp supplied 54 units of MP1 groundwater sampling pumps for the project. They were specially designed for pumping through and sampling monitoring wells with a diameter from 50 mm. In addition, the same number of foot valve pumps went to Romania. These can be used to take samples on open water, in water basins and monitoring wells. The samples can then be used for chemical, biological and/or bacteriological investigations.

The pumps were delivered to 11 water authorities, spread all over Romania. After thorough training, carried out by Eijkelkamp’s Romanian distributor, the equipment was taken into service.

Infiltration and permeability measurements included in training programme

Eijkelkamp supplies materials for the ‘Integrated Nutrient Pollution Control Project’ in Romania

P r o d u c t I n f o

Eijkelkamp keeps ISO-9001 certificateAt the start of 2010 the ISO-9001 certificate for Eijkelkamp was extended until 2013. The quality system employed by Eijkelkamp and its implementation satisfy NEN-EN-ISO 9001:2008 for the following areas of application:- The development, production, purchase and sale of equipment for the analysis of soil, water, plants, climate, residual substances and surveying equipment.- Providing training courses in the field of environmental studies, land development and water management.

ISO is the international standardisation organisation. It is an independent agency that promotes worldwide industrial harmonisation for effective quality management, and that publishes this as an international standard. ISO-9001 certification applies to organisations that develop, produce and distribute their own products. In order to qualify for certification and to keep this status, companies have to abide by the quality procedures for all activities concerning customer service and the production process. This takes place completely voluntarily and is checked by independent audits. Eijkelkamp received the certification for the first time in 1996 and has always managed to keep it since then.

18.50.SA / 18.52.SA Multimeter

These portable multimeter sets by Eijkelkamp Agrisearch Equipment are specially designed for carrying out analytical measurements under difficult circumstances in the field. The user-friendly meters are fitted with a large display, so that all important data is visible at a glance. Thus all the measured parameters are shown simultaneously. The meters also work at freezing temperatures and are also fitted with complete Good Laboratory Practice (GLP) functions. The electrodes are equipped with robust waterproof cable connections. The meters are waterproof to IP67, have data logging capabilities and are provided with a sturdy rubber casing. They are delivered in complete sets, including electrodes, calibration fluids and a spacious carrying case. Users who do not yet have any experience of working with a multimeter can get to work straight away with the specially written short manual.

Eijkelkamp Agrisearch Equipment has several multimeters in their assortment. Would you like to know which type is best suited to your wishes? Contact our sales department for individual advice. You can also find more information in the Product Knowledge Database (PKD) on our website: www.eijkelkamp.com.

Trade fair newsEijkelkamp will take part in the following trade fairs, seminars and congresses in 2010:

Name: When: Where:EGU Vienna 2 - 7 May Vienna, AustriaWorld Congress of Soil Science 1 - 6 August Brisbane, AustraliaIAH Congress 12 - 16 September Krakow, PolandIFAT 2010 13 – 17 September Munich, GermanyConsoil 22 - 24 September Salzburg, AustriaGrootGroenPlus 2010 6 - 8 October Zundert, the NetherlandsGeo Darmstadt 2010 11 - 13 October Darmstadt, GermanySachsisches Altlasten Colloquim 2 - 3 November Dresden, GermanyAqua Ukraine 9 - 12 November Kiev, Ukraine

At a large number of events Eijkelkamp will be represented by one of the distributors. Visit www.eijkelkamp.com for an up-to-date overview.

© 2010 - Geijkt Nieuws is published by Eijkelkamp Agrisearch Equipment. Nijverheidsstraat 30, 6987 EM Giesbeek, The Netherlands

Editor: Bas KeldermanDesign: Giesbers Concept en CreatiePrinter: LK Mediasupport

T +31 (0)313 88 02 00 F +31 (0)313 88 02 99 E info@eijkelkamp.comI www.eijkelkamp.com

Editorial address: Eijkelkamp Agrisearch EquipmentPO Box 4, 6987 ZG Giesbeek, The Netherlands

The new CTD-Diver, reliable under all circumstances

North German water works company fits measuring network with Divers and the e-SENSE observation well modem

The most reliable and compact data logger for the simultaneous measurement of groundwater levels, groundwater temperature and the conductivity of groundwater has been improved. The memory capacity has been increased to no less than 48,000 measuring values and the conductivity measuring range has been expanded to 0 – 120 mS/cm.

The CTD-Diver® by Schlumberger Water Services is the ideal data logger for measurements of groundwater, in particular where it concerns monitoring decontamination of soil and groundwater, supervising landfills or detecting salification.

Advantages: - The CTD-Diver has a ceramic case and is not susceptible to corrosion.- Various measuring methods are possible.- The battery has a lifespan of around 10 years.- Available in various pressure measurement ranges.

In 2008 the North German water works company Cooperating Water Works Wacken (Zweckverband Wasserwerk Wacken) was looking for a monitoring well measuring system. In a measuring field comprising 23 monitoring wells this system had to measure the water levels regularly and, at three specific measuring points, the conductivity as well.

The water works company runs various water extraction points, which must be managed in such a way that the water level in the connected aquifer does not sink below predetermined values. For this reason, they looked for a system in which the monitoring wells could be monitored several times a day via a telemetric system, and in which the resultant data would then be stored automatically in the control system. Decisions would then be taken concerning the management of the drinking water wells based on this data. The company wanted the control system to regulate this itself in the future.

The water works company wanted equipment that satisfied the following requirements: - A reliable measuring system for measuring groundwater levels and

electrical conductivity. - A good price/quality ratio.- Automatic preparation of telemetrically obtained data that can be

implemented simply into the water works company’s system. - The installation of the modem must take place in existing monitoring

wells and be capable of vandal-proof closing.

Eijkelkamp has products in their assortment that satisfy these requirements perfectly. That is why the North German company bought, in the autumn of 2008, 20 Divers® by Schlumberger Water Services (for groundwater level and temperature measurements) and 3 CTD-Divers (which also measure the conductivity). To start with the loggers were read out only once every half year.

In the autumn of 2009, Eijkelkamp’s German distributor, Eigenbrodt GmbH & Co. KG, undertook the implementation of the data transfer. The e-SENSE® field modems were installed in a 4 inch monitoring well. The e-SENSE Direct Server was installed on one of the computers of the water works company. In the beginning the data was sent once a day in an ASCII file. A simple computer programme by Eigenbrodt converted this data so that it could be imported directly into the database.

Nowadays, using the Eijkelkamp equipment, the water works company receives the desired information several times a day, within minutes of sending. Precisely as they had envisaged in 2008.

Geijkt Nieuws is compiled with the greatest possible care. However, it is possible that information has changed or become outdated by the time of publication. Therefore no legal liability can be accepted in relation to the content of Geijkt Nieuws.C o l o p h o n