Based upon the Keynes Controls VibWire-101 vibrating wire interface and the  Peizo-RM sensor interfaces

• Provides simplified measurements by significantly reducing incorrect readings caused by cabled noise sources

• Environment Agent approved sensors

• River profiles using groups of Piezo-RM Water Level Sensors.

• GPRS Mobile phone network data connection

• Water level depth measurements - 10 .. 2000 m

• Barometric Correction using digital barometer

• Pre-fabricated solutions for direct installation

• Results directly in engineering units - mH20, inch H20,

      milli-bar,  mm Hg

• Modem power cycling to prevent communications failure and maintain data integrity.

Measurement Applications

Ground water pressure           

Open stand-pipe piezometers

Observation Well Levels

Bore Hole Level Reports

Multi-point Piezometers

River Profiles

Sewer Liquid Levels

Mine shaft water level

Engineering Units

The Piezo-RM water level sensors and the Barom-SDI12 digital barometer can both provide results in raw and engineering units. When the local barometric pressure and water height measurements are in the same units then the true water height can be calculated in the logger unit prior to transmission across the network.

Pressure Port

Barom-SDI12 Unit pressure port has the ability to fit a plastic tube onto the pressure port and so move the atmospheric vent to a more suitable location away from the sensor.  This feature is used should systems be fitted inside tunnels or mine shafts.

The image opposite shows a sample of barometric data recorded in Bracknell UK.

Regardless to the type water level sensor being used for a measurement, to obtain a true water level then the local barometric effects have to be taken into consideration.

The Keynes Controls Barom-SDI12 model digital barometer is used in the remote measurement systems to measure and report on the local barometric pressure.

The Keynes Controls water level monitoring systems combine a range of technologies into a single application to make precise, reliable measurements that are accurately recorded and reliably communicated to a User.

The Piezo-RM range of intelligent water level sensors can be used for low level 0 - 100 m range and can be configured for the effects of local gravity, salinity etc.. or simply to report the maximum and minimum levels over a period of time.

For harsh environments, such as water levels in mine shafts or sewers then systems using vibrating wire piezometers can be used. The Keynes Controls systems are flexible enough to mix sensor technologies to create systems suitable for many different applications.

The Ezi-Log Web Interface gives access to the remote data using a web page. The User can configure automatic data reports from the water level recording systems and read the data in any 3rd party application that can handle CSV format data files.

For advice on systems design, layout and quotation requests, and data  transmission rates then contact Keynes Controls directly at sales@keynes-controls.com or via the contact for on the website