Groundwater Monitoring - Meters, Loggers & Telemetry

YSI

Van Walt Limited is the exclusive distributor of YSI Environmental Monitoring and Water Quality Meters and Systems for the UK and Ireland. These products are used to measure, monitor, and provide high quality, reliable data to help you make critical decisions on water quality and flow rates.

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Flow-Through Cells

Flow-Through Cells are available for the YSI multi-parameter probe or with cut-outs for generic industry standard electrodes. They are normally used with peristaltic pumps.

Calibration Buffers

Calibration Buffers are necessary for calibration and checking water quality meters. We offer exceptionally well priced reagents by Reagecon. As expected these are hallmarked.

Water Level or Dip Meters

Water Level or Dip Meters are used to measure water depth. They are available in various lengths from 10 metres to 100 metres. Graduations are in cm increments and trigger a light and sound signal when immersed in water.

Oil Interface Meters

Oil Interface Meters measure floating product in a well. Tapes are graduated to 1 mm and detection of layers as thin as 2.5mm is possible. There are two types of meters; both with audible and visible alarms.

e-SENSE e+WATER Surface Water Loggers

e-SENSE e+WATER Surface Water Loggers are devices used for the measurement and logging of water level and temperature depths of rivers, canals, lakes. The loggers are available to cope with a water fluctuation from 50cm to 200cm and are capable of storing up to 28000 measurements. These surface water loggers have built in barometric compensation so are more accurate than standard water level loggers. They are also frost resistant. Can be connected to the E-Sense telemetry system for remote programming, interrogation and to receive alarms.

e-SENSE Telemetry

e-SENSE is a telemetry system for e+ SENSORs which measure environmental data such as water level and temperature, rainfall, soil moisture, soil conductivity and soil temperature. The combination of e-SENSE telemetry and e+ SENSORs form a powerful early warning system, which is able to generate event specific alarms. e-SENSE telemetry can also be used for remote reading and programming of the DIVER range of water level loggers.

There are two options for field modems, a down well modem suitable for one e+SENSOR or one DIVER, or there is an 8-port facility which e+SENSORs and DIVERs can be attached.

The well modem can incorporate an option for data transfer by means of GPRS or SMS whereas the 8-port modem sends data by SMS only. The well modem can incorporate surface barometric data which can be used for compensation with DIVER.