We have the very latest hand-held pH and conductivity meters and a range of in-stream monitoring suites available. For field logging we are able to set up the probes as required connected to dataloggers for long or short term monitoring. The probes available can be used in river, stream, lake, reservoir, urban and sewerage sludge settings and include:
We take advantage of the latest, stable, low maintenance dissolved oxygen probes that can be used in a variety of environments. Figure courtesy of Partech Ltd.
In addition we have a suite of pump sampling devices that can automatically sample water from streams and reservoirs at given time intervals or when triggered by a float switch. Up to 96 samples can be taken from a site before they need to be collected and then can be taken to the laboratory for analysis.
Pump sampler with other stream monitoring equipment in the north Pennines.
Our pH, conductivity and TDR probes are state-of –art. The Time Domain Reflectrometry (TDR) probes can be used to determine soil moisture content and we have hand-held and in-situ logging versions.
We have experience in measuring and sampling overland flow and soil throughflow both for total discharge and for water chemistry. There are a range of techniques available ranging from piezometric techniques and field sampling of hydraulic conductivity and suction samplers to runoff collection troughs and tipping bucket discharge recorders.
Automatically recording runoff troughs
Automatic tipping bucket discharge recorder
Independent or wired borehole pressure sensors are available to monitor groundwater levels. Recently we have been commissioned by the Environment Agency and the National Trust to install arrays of water table recorders in sensitive floodplains to help validate floodplain flow models and to examine land management effects in blanket peatlands. Our loggers can be buried and are water proof so that the risk of vandalism or flood damage is low. This is also means that equipment can easily be hidden and is unobtrusive.