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Water Quality Instrumentation Hire

The range of water quality monitoring insturments in the RS Hydro hire fleet are presented below. You can click through to individual product pages for more detailed information, and if you'd like to talk to one of our experienced technicians to help you choose the right solution for your water quality monitoring application, please feel free to contact us.

The ultimate water quality sonde, The TROLL 9500 has become the industry benchmark for multi-parameter monitoring. It contains up to 9 field replaceable sensors, comes with fully detachable custom cable lengths, and 'Quick Cal' calibration can be done in under 5 minutes.
The AquaTROLL 200 is an ultra-rugged conductivity, level and temperature sensor that is designed to combat fouling. Batteries that are guaranteed for 5 years when logging at 15 minute intervals make this sensor ideal for extended deployment in harsh conditions
This system saves time and increses accuracy for the monitoring of low flow groundwater. The Flow Sense Wizard automatically monitors water quality parameters at specified intervals, during the sampling process, to determine whether the sample is representative.

TROLL 9500

With up to nine field-replaceable sensors that can measure conductivity, pH, temperature, dissolved oxygen, nitrate, chloride, ammonia, level/depth/pressure, ORP and turbidity, the TROLL 9500 has become the industry benchmark for multi-parameter water quality monitoring. It can be used in a wide variety of applications including surface water, dredging operations, ground water interaction, saltwater intrusion, low-flow sampling, watershed and source water protection, storm water runoff, stream restoration, estuary monitoring, beach monitoring, NPDES discharge, NPS monitoring, wastewater influent, effluent, reservoir and lake monitoring, vertical profiling, process water and aquaculture.

Aqua TROLL 200

The AquaTROLL 200 measures conductivity, level and temperature and has built-in data logging (logging modes include event testing, linear and linear average and logging rates are as fast as 1 per second. It also has a completely sealed, corrosion resistant, titanium housing and is designed to combat fouling, making the Aqua TROLL the ideal choice for extended deployment in harsh conditions. With a diameter of 0.72" (18.3mm) the AquaTROLL can fit easily into a 1" well.

The AquaTROLL is SCADA and telemetry ready and has Modbus/RS485, SDI-12 and 4-20 mA standard outputs, and is available in either gauged or absolute models with ranges up to 500psi.

Low-Flow Sampling System

Low-flow sampling (sometimes refered to as low-flow purging) is a relatively new technique in the UK. A submerged bladder or peristaltic pump is used to pump groundwater to the surface at a rate of 100ml to 1000ml per minute. Before this method was introduced much larger samples were taken. These often contained stagnant water located above and below the screen. The low-flow method of sampling causes less stress and therefore less movement and drawdown in the acquifer.