All of the Keynes Controls vibrating wire sensor interfaces use the Auto-resonance sensor excitation technique to drive and take measurements from the sensors. This excitation technique offers superior measurements to Pluck systems, does not require any knowledge of the sensor operating characteristics, and also minimises the strain put onto sensor coils and  

There is very little wasted energy outside the band of frequencies close to the desired sensor resonance frequency. The systems automatically adjust the sensor excitation to the resonant frequency of the coil. All of the Keynes Controls range of vibrating wire interfaces have been designed optimise the life of the sensors.

Single channel 1 x 4 Wire Port

The product is used for high speed vibrating wire sensor readings and enables dynamic as well as static measurement applications to be made.

The auto-resonance technique provides the optimum VW sensor measurement for high speed applications and has the advantage of pluck systems that no prior knowledge of a sensor is required.

Update rate 20 - 40 measurements / Sec

Expansion using MUX-16/32 Unit

1 ..   64 x 4 Wire sensor inputs

1 .. 128 x 2 Wire sensor inputs

1 ..   32 x Temp + 96 x Freq inputs

1 ..   64 x Temp + 64 x Freq inputs

1 ..   96 x Temp + 32 x Freq inputs

1 ..   128 Freq Inputs

1 ..   128 Temp inputs

Expansion using MUX-16/32 Unit

1 ..   64 x 4 Wire sensor inputs

1 .. 128 x 2 Wire sensor inputs

1 ..   32 x Temp + 96 x Freq inputs

1 ..   64 x Temp + 64 x Freq inputs

1 ..   96 x Temp + 32 x Freq inputs

1 ..   128 Freq Inputs

1 ..   128 Temp inputs

Part no:  MUX-16/32

The product only operates with the VibWire-201-Pro and VibWire-101 range vibrating wire sensor interfaces.

16 x 4 Wire sensor inputs

32 x 2 Wire sensor inputs

The free Q-LOG data acquisition and display software can be used to show measurements from the Keynes Controls vibrating wire interfaces.

Download a free copy Q-Log at

http://www.aquabat.net/QLOGFree/qlogv2.html

Options for SDI-12 and RS-485 network systems can be used. The USB-SDI12/485-Pro interfaces opto isolate the network from the PC USB port.

All of the Keynes Controls vibrating wire interfaces can be connected to a web based data logger unit. The Web logger enables the user

The image above shows the VibWire-101 connected to the AquaLog data recorder. The VibWire sensor interfaces can also be used any suitable 3rd party data recorders.

Mobus versions of the VibWire-101 and VibWire-108 instruments can be suppl;Ied. These units can be directly connected to plant wide SCADA and Control Systems.

Thes Modbus version instruments will work with any other 3rd party Modbus devices on the same network.

1 x 4 Wire sensor Inputs  - Supports 2 & 3 Wire Sensors

       - Units returned Hz, Digits  Hz2, SI Units

1 x RS232 Port

20 Hz Vibrating Wire Sensor Sample Rate

- Built in Gas Discharge Lightning Protection

Terminal Port menu system configuration

Auto-resonance Excitation

    for long life sensor operations

400 - 6 KHz Operating Frequency

Temperature Sensor - Deg C / Deg F

VW Linearisation

    - Quadratic Parameter Support