Vibrating Wire Sensor Solution
Piezometer Sensor Type Guide
Geotechnical Instrumentation
Maximum Deployment Length             =  150 m
 Outside Diameter                               =  25 mm
Optional SDI-12 barometer module
Barometric correction is carried out using the optional Barom-SDI12 barometer module. This unit returns the barometric value in the same engineering units as the water level sensor. A simple subtraction corrects the measured water level from the sensor to the true height height.
AquaLOG
Piezometer
The vibrating wire piezometers are often deployed in to deep bore holes, open and closed stand-pipes etc.. and also have the advantage that they can be deployed along way from data recording stations. Distances from the sensor to the VibWire interface of up to 5 Km can easily be achieved.

Vibrating wire systems rely on signal transmission by frequency and and not signal amplitude and this often enables the sensors to operate into environments not suitable to conventional solutions.

The optional barometer module can be controlled by the AquaLOG like any other device enabling barometric correction of data to be achieved .

Maximum Deployment Length         =  0 - 5 Km

Optional SDI-12 Barometer module for barometric corrections
Information in this document can change without notice.
The VibWire range of interfaces enables nearly all manufacturers vibrating wire piezometers to be used to form a water level recording system.

The diagram opposite demonstrates a single channel piezometer system with barometric correction.
SDI-12 Network
AquaLOG
VibWire-101 Vibrating Wire Interface
All of the instruments shown above are supplied in a
plastic fully encapsulated enclosure making everything safe
from immersion in water or sand and corrosion.
SDI-12 Liquid Level Sensors
Keynes Controls SDI-12 digital network encapsulated water level sensor.

Part No PIEZO-RM-BAR.
available 1,2,5,10 bar / 10/20/50/100 m
Part Numbers:
PIEZO-1-SDI12     10 m range
 PIEZO-2-SDI12      20 m range
 PIEZO-5-SDI12      50 m range
 PIEZO-10-SDI12   100 m range
Optional Precision Barometer
 for barometric correction.
SDI-12 Network
PIEZO-RM SDI-12 Liquid Level Sensors
This range of water level sensors use the SDI-12 digital network for data transmission so there is no loss in accuracy in any signal conversion process. A precision temperature sensor is fitted inside the pressure sensor to provide continuous temperature corrections to any measurements.

The analogue data converter is built into the PIEZO-RM so there is no loss in accuracy in any electrical conversion. The pressure and local temperature values can be reported in a range of engineering units such as m, cm , mm H20.
USB Memory Expansion Port
Part No. Barom-SDI12
HDR-Bluetooth
Fibre Optic  to Bluetooth Interface
The AquaBAT data recorder is deployed to operate stand-alone and can be downloaded while the sensor is in situ. The fibre cable used to secure the sensor is also used for communications.

AquaBAT-Bar is available for stand-alone barometric data logging.
Part Numbers
AquaBAT-Bar          Barometer sensor
 AquaBAT-17-RM     17.5 mm diameter RM = range 1,2,5,10 m
 AquaBAT-22-RM     22 mm diameter    RM = range 1,2,5,10 m
 HDR-Bluetooth        Fibre-to-Bluetooth Interface
PIEZO-RM
Level sensor
AquaBAT Level Recorder
The VibWire-101 supports most manufactures ranges of  piezometers. Contact us for further details.
Part No. Barom-SDI12
17.5 mm Outside Diameter Model
22 mm Outside Diameter Model
AquaBAT Stand-alone Level Recorder
Real-time System
The image below shows the basic Keynes Controls water level recording system using the AquaLOG data logger  and the PIEZO-RM range of sensors.  The optional barometer module is included for barometric correction.
The system is modular and can be expanded to take additional sensors to suit any application. All the component parts are fully encapsulated and suitable for operation in the harshest environment.
Maximum fibre cable length is :  120 m