The new Geosub 2 Pump & Controller is unique with no comparable competitors for groundwater monitoring. It is suitable for low flow sampling or high flow purging and it can pump down to 60 m head lift of water. A Drop Tube Assembly is also available to position the intake deeper into the well.Find out more ....
The Requirement: Within the Smart Bog Project which seeks to understand global carbon stocks and their effect on global carbon emission levels, a need to understand water flow within a peat bog was identified. Water flow data needed to be imported into a model to help determine the driver environmental variables which shape the carbon cycle of a peatland ecosphere and model the effect on the surrounding environment.
Solution: The deployment of RBC flumes with high accuracy water level sensors connected to a vanwaltDATAHUB. For the automatic monitoring of water flow the flume works with a datalogger when you add a sensor in a stilling well. Different size flumes are available dependant on your expected flow, these range from 0.1 - 8.7 litre/sec to 2-145 litre/sec. We recommended a vented system which consists of a high accuracy Keller sensor, this is a small range sensor which barometrically self-compensates for improved accuracy.
The Requirement: To report on a range of meteo and environmental parameters including water level; water quality and water flow to ensure compliance with the regional regulator when it comes to water extraction and the impact of site activities (a ski resort) further down the mountain and along the natural river courses.
Solution: The deployment of a powerful and extensive telemetry system comprising of different sensors for different environmental parameters, attached to a variety of vanwaltDATASLAVEs, each talking to strategically placed vanwaltDATAHUBs to ensure complete coverage of a large geographical area, in a cost effective and efficient way. The system needed to be robust to deal with extremes of weather and deal with mountainous conditions which sometimes meant poor lines of site. Data needed to be uploaded regularly and is used to monitor the switching of additional equipment at the site, artificial snow machines, as well as ensuring compliance with the regulator.
The Requirement: A commercial nursery and fruit growing facility looking to optimize plant performance and yield by intimately understanding the impact of changes in the physical growing conditions. These include the metrological conditions, soil temperature, soil pH and EC as well as the soil moisture content, sap flow, leaf temperature and the EC of the irrigation run-off water.
Solution: A fully telemetered system connecting a vanwaltDATAHUB to six soil moisture probes monitoring water content of the soil, soil temperature and the soil EC; four sediment pH probe sensors, an Ambient temperature and humidity sensor; one Keller sensor to monitor EC in the irrigation run-off and one each of the ecoTech Sap sensor and Leaf temperature sensors. The data from all these sensors is fed into a control room every 15 to 30 minutes for analysis.
The Requirement: On a small Spanish island in the Atlantic a research project is underway to monitor the impact of climate change on the plants of the island. Local flora, cultivated in different conditions, needed monitoring to see the impact of soil moisture and weather conditions on the plant’s health and growth. The problem is the island is very remote and access is only by boat so it is very expensive and sometimes impractical to access the site.
Solution: The deployment of multiple, buried Soil Moisture probes connected to a single vanwaltDATAHUB. The batteries in the DataHub topped up with a solar panel and the entire installation protected with a perimeter fence. Data is collected hourly and uploaded once a day for analysis. All the soil moisture and soil temperature data, along with other research project results, will be used to develop a model of climate change impacts.
The Requirement: Whatever your requirment, when it comes to an extra pair of hands to help install equipment or complete an entire installation, the team in the New Zealand Office can help.
Solution: Window Sampling; Piezometer Installation; Lake & River Bed Sediment Sampling; Pump & Slug Testing; Soil Permeability & Moisture Testing and Data Logging & Telemetry Equipment
The Requirement: Part of the infrastructure is below the water level and could be subject to flooding. Dewatering pumps on the adjacent properties exacerbates the problem.
Solution: A number of Van Walt Data Collection Systems monitor the water levels. Alarms have been set so all parties receive an early warning that flooding could occur.
As Oliver van Biervliet comes to the end of his internship he sees it as "the beginning” of a project to build capacity in freshwater management in Africa. This project was inspired by his first job in nature conservation working for Norfolk Rivers Trust at a time when Rivers Trusts were increasingly used to deliver UK government imperatives to improve the degraded state of our freshwater ecosystems.
We have developed a versatile, secure, flexible, sophisticated and accurate web-based groundwater; water level; water quality and soil moisture telemetry system...
To complement our rental range and when you're too busy to get on site; or too far away to make a site visit cost effective – Van Walt New Zealand can help. Offering training, technical support, site visits, servicing and repairs, project media coverage, demonstrations, best practice updates, case studies, exhibiting, after sales care and equipment advice.
We have a range of Rental Equipment; from Groundwater Pumps; YSI Handheld Water Quality Meters to Sediment Samplers. Renting is cost effective and convenient.
Accurate and consistent Soil Moisture monitoring has become increasingly important when researching environmental factors like climate change, decreasing water resources, improved crop production and protecting threatened habitats.
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