Keynes Controls VibWire-201-Pro User Manual

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VibWire-201-Pro User Manual 1

Model VibWire-101-Pro

Vibrating Wire Sensor Analyser

Data Recording Unit

Part No: VibWire-201-Pro

Advanced FFT Sensor Analyser

Advanced FFT Sensor AnalyserAdvanced FFT Sensor Analyser Precision Temperature Readings

Precision Temperature Readings

Precision Temperature ReadingsPrecision Temperature Readings User Pre-set VW Sensor Configurations

User Pre-set VW Sensor Configurations

User Pre-set VW Sensor ConfigurationsUser Pre-set VW Sensor Configurations

Sdi-12 & RS-485 Communication Ports

Sdi-12 & RS-485 Communication PortsSdi-12 & RS-485 Communication Ports

Daylight readable LCD display

Daylight readable LCD display Expansion Options

Daylight readable LCD display Daylight readable LCD display

Manufactured by Keynes Controls Ltd

Data logging to micro SD memory card

Data logging to micro SD memory cardData logging to micro SD memory card Up to 32 gb Storage

Up to 32 gb Storage

Up to 32 gb Storage Up to 32 gb Storage

Spreadsheet Format Data Files

Spreadsheet Format Data Files Spreadsheet Format Data Files

Real-time Clock

Real-time ClockReal-time Clock

Expansion Options

Expansion Options Expansion Options

- 16 x 4 Wire Inputs

- 16 x 4 Wire Inputs - 16 x 4 Wire Inputs

- 32 x 2 Wire Inputs

- 32 x 2 Wire Inputs - 32 x 2 Wire Inputs

Manufactured by KEYNES CONTROLS LTD

Tel: (0044) 118 327 6067 E-mail: sales@keynes-controls.com

VibWire-201-Pro User Manual 2

Features

Lightweight, Portable & Rugged

Compatible with most manufactures vibrating wire sensors

Real-time displays Freq (Hz), Digits (Hz2/1000), SI-Units, Spectra

FFT Spectral based algorithms for interference free measurements

Auto-resonance excitation 400 - 15 K Hz range - minimises sensor stress

Fully configured sensor operations

Large data storage - 100 million readings - SD Flash Cards to 32 Gb

Fast data recording - 1 sec to 1 hour logging intervals

No Vibrating Wire Sensor Prior operating conditions required

Expandable to 32 channels

SDI-12 and RS-485 ports for remote network connection

Optional radio interfaces for cable free operations

Firmware up gradable device - load software revisions with factory return

Benefits

Out the box solution for vibrating wire sensor measurements Daylight readable LCD Display Provides superior measurements by automatically reducing incorrect readings caused by noise sources Customised FFT-based algorithm ensures readings are accurate and free from interferences Real-time Sensor Spectra Display No special cables or connectors required No programming experience required to interface to 3rd party loggers and data acquisition systems.. Interfaces up to 32 channels using the MUX-16/32 Expansion unit. High resolution—less than 0.001 Hz (industry standard is 0.1 Hz) Low power consumption - Uses readily available AA battery life - 24 Hours continuous use Suitable for laboratory testing and field measurement applications Precision temperature and frequency measurements from vibrating wire sensors Works with all RTD-temperature sensors regardless T0 resistance - 3 K, 10K etc Free Data Storage and Display Applications Software -

Additional items commonly used with the VibWire-201-Pro Unit

MUX-16/32 Expansion Unit

This device is used to expand the number of sensor inputs that can be used by the VibWire-201-Pro from a single channel to 32 inputs.

This device can be powered directly from the VibWire-201-Pro for stand-alone measurements.

USB-SDI12-Pro Media Converter

This device is used to connect the VibWire-201-Pro to a Windows PC remotely across the SDI-12 digital network. The USB-SDI12-Pro can be used to power the VibWire201-Pro for fixed monitoring applications

The device supports all of the Keynes Controls SDI-12 sensor and interfaces, including many 3rd party devices.

The USB-SDI12-Pro isolates the network devices from the Windows PC USB port and protects it against possible damage caused by sensor failures.

USB-485-Pro Media Converter

This device is used to connect RS-485 based intelligent devices including the VibWire-201-Pro a Windows PC.

The device not only can power sensors on the network, but also isolates the PC USB port from any possible device failure in order to prevent damage to the host PC.

The device supports all of the Keynes Controls RS-485 sensor and interfaces, including many 3rd party devices.

VibWire-201-Pro User Manual 3

Page Number Description

5 Hardware Features / Controls and Ports

6 Quick User Guide - Default Thermistor part numbers - Real-time Results - Adjusting the display

7 Fitting Batteries - Battery Life - MUX-16/32 Expansion Port - Initial Start-up Screen -Low Battery Effects - Setting the Real-time Clock

8 Real-time Results -

10 Technical Specifications

11 Pre-set Sensor Configurations

12 Channel Expansion Options

13 Number of Channels

14 Program Commands for scanning MUX-16/32 in 32 x 2 Wire mode (3rd party loggers )

15 Frequently Asked Questions

16 Sensor Configuration Example - Piezometer

17 Sensor Configuration Example - Piezometer

18 Q-Log - Quick User Guide

Auto-timeout / Real-time Clock. Factor Default Settings Reset

VW Sensor Installation.

Saving New Parameters - Adjusting the Time

Initial Start-up Display - Frequency Results Display - Digits Results Screen - Natural Units (SI) - Spectra Display Spectral Features.

Digital Network Selection Device Port Selection - SDI-12 Network Connection - RS485 Network Connection (Using USB-SDI12-Pro or USB-485-Pro media converters)

Temperature Measurements - Associated Part No - Device Configuration Software - Common VW Sensor Thermistor Part Numbers

- Sources of Error - Calibration Factor Error - User Defined Stein-hart Hart Calibration Factors

- Sensor Information

- Downloading and installing device setup software - Automatically setting the real-time clock. Pre-defined Thermistor Calibration Parameters (Steinhart-Hart Calibration factors) Automatically setting the real-time clock.

- 16 x 4 Wire Expansion - 32 x 2 wire expansion

- Mux-16/32 Expansion Unit Configuration Options - MUX Channel Selection Menu Options Data Recording - Data Recording Options - Data Recording Menu System

Program Commands for scanning MUX-16/32 in 16 x 4 Wire Mode

- Switching between 2 and 4 Wire Mode Operations under SDI-12 Commands

- VW201-Pro want communicate with 3rd party logger - Network ID Number - How fast can the VibWire-201-Pro make a measurement

- Where to download the Q-LOG Software - How to make a measurements using a PC without any programming experience

- MUX-16/32 Connection Options to the VibWire-201-Pro

Temperature Compensated Calibration Factors - Results in Natural (SI) Units Process Option setting - Pre-set Sensor Configuration Settings - Simplified Calibration Factors

Temperature Compensated Calibration Factors - Results in Natural (SI) Units Process Option setting - Thermistor Type Pre-set Sensor Configuration Settings Simplified Calibration Factors

Factory Default Settings -Sample Rate Options

- Logging Configuration Window - Scanning for Devices External Power Supply -Device identifier strings PC Data Acquisition - Start data recording

(VW201cal software)

19 Technical Specifications

20 Examples Of Using RS-485/SDI-12 Commands

21 Data Record to Flash Memory Card

22 Worked Example - Spot Welded VW Strain gauge

23 Temperature Calibration Factors

24 PC based Water Level Recording with Barometric Correction.

25 Temperature Measurements

26 Sensor Problems and Diagnostics

27 Free Standing Strain Gauge

Changing the ID Number (address) - Start a measurement for Instrument on a network Isolated Power Source Diagnostics

Removing The Memory Card Storing the menu option Default Sample Rates External Power Supply Isolated USB Media Converters

Data into engineering units - simplified formula

Adding a new thermistor type - Calibration parameters and what they mean - Sample Calibration Factors

(VW201cal software)

Device USB Configuration Port - Connection to a Data Logger

Factory Set Steinhart Hart Calibration Factors Testing the temperature measurements

- 22 Deg C fixed point - 3.3 K Ohm temperature test resistor

- 52 Deg C fixed point - 1 K Ohm temperature test resistor

Sensor Operating Characteristics

- VW strain gauge - Pre-tension gauge mounted onto a structure

- VW strain gauge - Failed or loose weld

29 APPENDIX-A Menu System Summary

32 APPENDIX-B Sample Calibration Data Sheets

VibWire-201-Pro User Manual 4

Important Figures

Figures Description

Fig 1 Hardware Features

Fig 3 Initial Start-up Screen - no sensor connected

Fig 7 & 8 Sensor Installation

Fig 9 Adjust results display screens

Fig 10 Fitting batteries

Fig 12 Setting the real-time clock

Fig 14 - 17 Results displays

Fig 18 - 19 VW sensor spectra

Fig 20 - 21 Device Port Selection

Fig 22 SDI-12 network connection - USB-SDI12-Pro Media Converter

Fig 23 RS-485 network connection - USB-485-Pro Media Converter

Fig 24 - 25 VW201cal Software - Calibration Factors Entry Window

Fig 26 32 x 2 Wire Expansion with the MUX-16/32 Unit

Fig 27 16 x 4 Wire Expansion with the MUX-16/32 Unit

Fig 28 MUX-16/32 Control Menu System.

Fig 29 Data Recording Menu System

Fig 31 MUX-16/32 Output Port Connections for 32 x 2 Wire Mode.

Fig 32 MUX-16/32 Output Port Connections for 16 x 4 Wire Mode.

Fig 33-35 32 x Frequency / 32 x Temperature / 16 x 4 Expansion Unit Wiring Options.

Fig 39 Select individual MUX-16/32 Channel Menu System

Fig 41 VW201cal Software - Example Calibration (Frequency) factor configuration Window.

Fig 43 Preset Sensor selection Menu System

Fig 45 SDI-12 port pin-outs - USB-SDI12-Pro and VibWire-201-Pro

Fig 46 Q-LOG Configuration Window - Data Logging - PC Port Network Type Selection.

Fig 48 Scanning for Devices - Q-Log Window.

Fig 49 Q-LOG Devices List Window

Fig 50 Q-LOG Start Data Acquisition Window

Fig 53 External Power Supply

Fig 54 Recording Interval Menu Options

Set number of channels to scan.

Product Changes

VibWire-201-Pro demonstrating the ability to calculate and display a real-time vibrating wire sensor spectra.

Keynes Controls Ltd has an on-going policy of design review and reserves the right to amend the design of their product and this instruction manual without notice

VibWire-201-Pro User Manual 5

Hand Held VW Logger Unit with FFT Analyser

Hand Held VW Logger Unit with FFT Analyser Hand Held VW Logger Unit with FFT Analyser

Hardware Features

Fig-1

Carbon fibre reinforced ABS plastic enclosure

Power On

To power on the VibWire-201-Pro unit, hold and press the On/Off button for 2 seconds. The device will initiate and start a measurement operation.

The device will initialise using the last defined senso

Power Off

Hold and press the On/Off button and the device will power off

Powering on the Unit

Press and hold for 2 seconds the ‘Menu Out’ button. The device will power on and the ‘Start-up Screen will be displayed. Repeat the operation to power off the device.

Menu-Out On/Off Button

Menu-In & Power On/Off Button

MUX-16/32 Control Port

Sensor Port

Compatible with the VW101 & VW108 units

Rubber protective boot cover

Earth

Frequency

Signal connection Posts

Port

Temperature

Port

Calculations

Keynes Controls use the following calculation

Digits = Frequency 2

1000

Day Light Readable LCD Display

The LCD display is clear to read in most lighting conditions. A back light is available for low level light environments. Three levels or display brightness can be ‘User’ assigned.

Back light - LCD Screen

Options for High , Low, Off.

User Defined Sensors - 20 options

Use the Windows Configuration software to assign sensor details.

Menu Control Buttons

Use the Menu-In and Menu-Out buttons to select the different menu systems.

User the ‘Up’ and ‘Down’ menu keys to select the menu items.

RS-485 network port

SDI-12 network port

The 4 wire sensor port mounted at the bottom of the instrument is used a general sensor test port. Bare sensor wires can be simply connected directly into the spring terminal posts.

4 Wire Sensor Inputs + Earth

Spring Terminal Post Connectors

Real-time Clock

Temperature compensated real-time clock accurate to 50 ppm / Deg C.

(Hz2) 1000

Menu-InMenu-Out Down Up

Automatic Time-out

The VibWire-201-Pro will power down automatically after 30 minutes of unattended operation, unless configured to make measurements.

Protective Case

The case for the VibWire-201-Pro is manufactured from carbon fibre reinforced ABS plastic. This makes the case highly safe from accidental damage.

The rubber boot prevents provides additional protection from the wear and tare of site work. A rear stand enables the device to free stand while in operation.

SDHC flash memory card slot.

Factory Default Setting Reset

Select the ‘Reset Defaults’ option shown below to reset the device to its factory settings. The image below shows the menu operations required to undertake this task.

Ethernet Port

Micro-USB Port (Type B)

Fig-2

Frequency

2534.86

Selected Sensor

Frq

Res Dg SI

Tem

2016-01- 20 08 :40::17

3003.56

24.89

2534.86

Dig

6424.95

992.28

Val

Ohm C

Menu-In

Sensor No Logger

Multiplexe r Remote System

Main Menu

Menu-In

System

Set Time and Date

Speaker O N/OFF Backlight Info Reset De faults

Ethernet Port

The Ethernet port is currently not used in the VibWire-201-Pro and has been added for future expansion.

Micro-USB Port (Type B)

The micro-USB port is used to configure the VibWire-201-Pro and to download data. Use the VW201pro configuration software tool assign sensor configuration information into the instrument.

SDHC Flash Memory

The VibWire-201-Pro supports a single SDHC memory card slot. The memory card has to be pre-formatted before use.

The maximum size memory card currently supported is 32 Gb.

VibWire-201-Pro User Manual 6

Quick User Guide

VW Sensor Installation

The instructions shown in the Quick User Guide presumes that the batteries have already been installed into the device and a vibrating wire sensor is ready for testing.

The VibWire-201-Pro will operate with any sensor manufactures device.

The VibWire-201 comes pre-configured with default temperature sensor calibration factors defined. The pre-set temperature sensor calibration factors are based on a 3 K Ohm @ 25 Deg C device. The following sensor part numbers all use the same calibration settings.

1000001

-70.20

2016-01-20 08:40::17

Ohm C

Default Thermistor Part Numbers

YSI 44005 Vishay 1C 3001 B3 RS Part no: 151-215

1. Power On The VibWire-201-Pro.

Press and hold the ‘Power On’ for 2 seconds. and with no sensor connected the default

Frequency display is shown opposite.

Frequency

99.00

Selected Sensor

Frq Dig Val

99.00

9.80

Res Tem

Dg SI

Fig-3 Initial Start-up Screen

Default screen with no sensor attached.

2. Connect a vibrating wire sensor to the device

Connect a single sensor to either the 5 pin terminal block input port or directly onto the sensor port mounted at the bottom of device using the spring loaded terminal posts..

Connect the frequency output signal from the sensor to the red and black terminal posts.

Frequency

Fig-4

Input Signal Connection

The VibWire-201-Pro supports full 4 wire sensor operations. The device measures frequency and temperature from any suitable vibrating wire sensor.

Connect a Vibrating Wire sensor to the 5 pin ‘Sensor Input’ port or directly to the spring return termination posts mounted at the bottom of the unit.

1. Connect the sensor coil to the ‘Frequency Input’ port.

2. Connect the sensor thermistor (temperature) sensor to the ‘Temperature Input’ port.

3. Use the VW201cal.exe software to define thermistor calibration factors.

Figures 7 and 8 show how to connect a vibrating wire sensor to the device.

Sensors connected to the spring loaded terminal posts

Fig-7

Earth

Frequency

Input

Frequency Signal

Coil

Temperature

Input

Sensor Terminal Posts

Sensors connected to the Sensor Port

Connect the vibrating wire sensor thermistor (temperature sensor) to the green and yellow terminal posts.

Thermistor

Fig-5

Input Signal Connection

3. Real-time Results

As soon as the vibrating wire sensor is connected to the VibWire-201-Pro then the measurements will be displayed on the display.

3003.56

24.89

2016-01-20 08:40::17

Ohm C

A typical display screen is shown opposite.

Fig-6

Frequency

2534.86

Selected Sensor

Frq Dig

Val

2534.86

6424.95

992.28

Res Tem

3. Use the ‘Up’ and ‘Down’ keys to switch between Hz, Digits and Spectra.

Down

The SI unit display remains blank until configured.

Adjusting the display

Use the keyboard ‘Up’ and ‘Down’ arrow keys to adjust the results display screens.

The display screen will be change as the Up and Down keys are pressed.

Menu-InMenu -Out Down Up

- VW Sensor

Earth

Frequency Signal

Coil

- Thermistor

+ Thermistor

+VW Sensor

Sensor Port

Thermistor

temperature sensor

Fig-8

Fig-9

Frequency

2534.86

Selected Sensor (3) EDS-20

Frq Dig Val

2534.86

6424.95

992.28

Hz Dg SI

Res Tem

2016-01-20 08 :40::17

3003.56

24.89

Ohm C

Digits

6424.95

Selected Sensor (3) EDS-20

Frq Dig

Val

2534.86

6424.95

992.28

Hz Dg

Res

3003.56

Tem

2016-01-20 08 :40::17

24.89

Ohm C

The results shown above are obtained using an Encardio-rite EDS-20 vibrating wire pressure sensors.

SI Units

Sensor

992.28

Selected Sensor (3) EDS-20

Frq Dig

Val

2534.86

683.929

992.28

Hz Dg

Res

3003.56

Tem

2016-01-20 08 :40:17

24.89

Nat Units

Ohm C

Spectra

FFT Sensor Spectra

6 10 11

2534.86

6424.95

992.28

Hz Dg

0 1 2 3 4 5

Selected Sensor (3) EDS-20

Frq Dig

Val

KHz

Res Tem

3003.56

24.89

2016-01-20 08:4 0::17

Ohm C

Use the Up and Down arrow keys

to switch between the results screens

Down Up

VibWire-201-Pro User Manual 7

Fitting Batteries

Only fit standard AA batteries in the VibWire-201-Pro.

AA 1.5 V Cells

Initial Start-up Screen

Frequency

99.00

Selected Sensor (1)

Frq

99.00

Dig

9.80

Val

Battery level when a new set of batteries are installed into the unit.

Res 1000000.00 Tem -70.2

2016-01-20 08:40::17

2016-01-20 08:40:17

6 V

3003.56

24.89

Fig-10

Ohm C

Fig-11

1. Remove the battery cover from the rear of the device by simply unscrewing the securing bolts.

2. Replace the battery set in the layout shown in the image opposite.

3. Replace the battery cover and power on the unit.

The battery level indicator will show 6V when a new set of batteries has been installed See Fig 11.

Battery Life

When operating as a single channel device using a new set of batteries the VibWire-201-Pro will operate for approximately 40 Hours continuous use.

MUX-16/32 Expansion Operations

The VibWire-201-Pro powers the MUX-16/32 expansion unit directly across the SDI-12 BUS and will reduce the battery life of the device if used without an external power supply.

IMPORTANT NOTE

Remove the batteries from the VibWire-201-Pro should the device not be used for a long period of time.

Low Battery Level Effects

Once the battery levels falls before 4.5 V then

1. Display may not update at the correct rate and appears to flicker.

2. Measurement values can be erratic.

Once the display falls below 4.5V then the ‘Low Battery’ indicator flashes, see Figure 13 below. Should the unit continue to operate then the display may flicker. Fit a new set of batteries.

Setting the Real-time Clock

The real time clock in the VibWire-201-Pro is configured using the ‘Set Time and Date’ menu. See Page FF section G.

The VibWire-201-Pro can be used as a stand-alone VW sensor data logger recording measurements automatically, and also to take single shot readings under ‘User’ control.

Measurements are stored to the flash memory card.

See Page MM for details on selecting the ‘Time and Date’ menu.

Real-Time Clock Menu System

Set Time and Date

Date 2016-01-06

Time 08:25:30

Fig-12

Example

6th January 2016 08:25 AM 30 Seconds

Use the Up and Down keys between ‘Date’ and ‘Time’ options.

Down Up

Select Date or Time to be configured

Use the ‘Menu-Out’ and ‘Menu-In’ keys to move along the Date or Time fields.

As the keys are pressed the item indicator symbol will be displayed under chosen item.

Menu-InMenu-Out

Once the parameter to adjust has been chosen then use the ‘Up’ and ‘ buttons to make changes.

The ‘Up’ and ‘

Down

’ buttons will increment, or decrement a parameter by 1 unit

after each action.

(Time/Date For mat)

Date Year-Month-Day

Time Hours:Minutes:S econds

(Selected Item Indicator)

Down

’

Adjusting the Time

Down

Time 09 : 23: 06

Secs

Time 09 : 23: 06

Hours

Down

Time 09 : 23: 06

Mins

Move through each date an and time parameter in turn making adjusts as necessary.

Saving New Parameters

Once all parameters have been set, press the button unit the

Menu-Out

default ‘Frequency’ menu is displayed.

The new date and time values will be stored and the real-time clock settings updated to the different menus.

Frequency

99.00

Selected Sensor (1) EDV-30

Frq

99.00

Dig

9.80

Val

Low Battery Indicator

Note

The VW201cal.exe Windows configuration software automatically sets the time and date used by the VibWire-201-Pro to the PC clock.

Res 1000000.12 Tem -70.2

Low Battery

24.89

Ohm C

3003.56

2016-01-21 10:40::17

2016-01-20 08:40:17

Fig-13

Date and time string will update with the new settings.

Down

Adjusting the Date

Date 2016-01-06

Year

Down

Date 2016-01-06

Month

Down

Date 2016-01-06

Day

Down

VibWire-201-Pro User Manual 8

Real-time Results

Figures 14 below shows the default display that appears as soon as the device is powered on and with no sensor connected to an input port.

Upon connection of a sensor to the input port then the device automatically displays the frequency and temperature values.

With no sensor coil connected to the frequency input then the device defaults to 99.00 Hz.

Initial Start-up Screen

Frequency

99.00

Selected Sensor (4) EPP-30V

Frq Dig

Val

SI Units

See Note 1

99.00

9.80

Battery Voltage

Hz Dg

Res

100000.1

Tem

2016-01-20 08:40:17

6 V

Date Time

-70.20

Fig 14

Ohm C

Fundamental Frequency

Resistance Thermistor temperature sensor built into a VW sensor.

Instant sensor temperature in Deg C

Frequency Results - Hz

Frequency (Hz)

Digits - Hz2/1000

Engineering Units

Once a vibrating sensor is connected to an input port the display will change similar to that shown above.

Frequency Results - Hz2 (Digits)

Fig-16

Digits

VW Sensor - SI Unit (Dig its)

Natural Units (SI)

Fundamental Frequency

2534.86

Selected Sensor (4) EPP-30V

Frq

2534.86

Dig

6424.95

992.28

Val

SI Units

Battery Voltage

Hz Dg

Res

3003.56

Tem

2016-01-20 08:40::17

6 V

Date Time

24.89

Ohm C

in Digits

All Keynes Controls VW sensor instrumentations uses the digits calculation

Digits = Frequency 2

1000

(Hz2) 1000

Use the ‘Up’ and ‘Down’ arrow keys to switch between the different results screens.

Fig-15

Frequency

834.69

Selected Sensor (4) EPP-30V

Frq

834.69

Dig

696.70

Val

Fig-17

Sensor

300.31

Selected Sensor (4) EPP-30V

Frq

876.86

768.36

Dig

300.31

Val

SI Units

Battery Voltage

Important Note

Res Tem

6 V

Res

Tem

5.2 V

Date Time

VW Sensor - SI Unit (Hz)

3571.73

2016-01-20 08:40:17

Ohm C

21.07

VW Sensor - SI Unit

Nat Units

18.67

Ohm C

3984.29

2016-01-20 08:40::17

Sensor Frequency (Hz)

Output value in engineering units.

Down

Thermistor Resistance Value

VW sensor Temperature Deg C

The VibWire-201-Pro undertakes the spectral calculations on the incoming vibrating sensor signal and gives the results immediately.

There are no ‘User’ configuration settings required to be assigned in order to undertake a spectral calculation.

The largest peak is taken as the fundamental operating frequency of the sensor. See Fig 19 opposite.

Spectra (Hz)

Frequency (Hz)

Digits - Hz2/1000

Engineering Units

VW Spectra Screen

FFT Sensor Spectra

992.28

6 10 11

Hz Dg

Battery Voltage

0 1 2 3 4 5

Selected Sensor

Frq

2534.86

6424.95

Dig

Val

SI Units

KHz

Res Tem

6 V

3003.56

2016-01-20 08:40::17

Date Time

24.89

Fig-18

131415

Ohm C

Once the calibration factors have been set, and the process option set to ‘2’ see Fig 24 on page 11.

All Keynes Controls VW sensor instrumentations uses the digits calculation

FFT Sensor Spectra

Fundamental Frequency

0 1 2 3 4 5

2534.86

= Fundamental Frequency in Hz

6424.95

= Fundamental Frequency in Digits

Harmonic

Frequency

2 Frequency

6 10 11

KHz

Digits = Frequency 2

1000

Harmonic

Maximum Operating Frequency

(Hz2) 1000

Fig-19

Note. The example screens have been determined using a free standing Encardo-Rite EPP-30V pressu re sensor

VibWire-201-Pro User Manual 9

Selecting Remote Network Connections

The VibWire-201-Pro unit can connect to the SDI-12 and RS-485 networks for use in remote vibrating wire sensor measurements.

The SDI-12 and RS-485 ports enable the VivbWire-201-Pro to transmit sensor data into third party data logger and acquisition systems.

Device Port Selection

To select the network port type for remote data acquisition operations on the VibWire-201-Pro, use the menu system to select either of the menu items shown below.

The device will then make measurements, and transmit data over the specified network port.

Page 30 shows the menu system built into the VibWire-201-Pro.

SDI-12 Port Operation

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Dig

Tem

6424.95

992.28

Val

RS485

Port Opera

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

Menu-In

Ohm C

tio

Ohm C

Menu-In

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Main Menu

Menu-In

Remote

Address Serial Comms

Remote

Address Serial Comms

Menu-In

SDI12 RS485 1200

Select Backlight

Fig-20

Sets the VibWire-201-Pro to transmit data through the SDI-12 Port

Sets the VibWire-201-Pro to transmit data through the RS-485 Port

Fig-21

For single channel operation, once the output port is specified the sample data can be shown on the display.

SDI12 Remote Port

Remote Mode Port = SDI-12 Address = 1 Measurement Count = 1 032

Selected Sensor

2534.86

6424.95

992.28

Dg SI

Res Tem

2016-01-20 08:40::17

Frq Dig Val

Ohm

3003.56

24.89

Number of measurements since start of measurements on a network. ID = 1.

RS485 Remote Port

Remote Mode Port = RS485 Address = 3 Measurement Count = 1 53

Selected Sensor

Res

2534.86

Frq Dig

6424.95

992.28

Val

3003.56

Tem

2016-01-20 08:40::17

Number of measurements since start of measurements on a network. ID = 3.

24.89

Ohm C

SDI-12 Network Connection

Figure 22 below shows how to connect the VibWire-201-Pro SDI-12 port to a USB-SDI12-Pro media converter. The USB-SDI12-Pro media converter connects to a Windows PC and allows measurements from VibWire-201-Pro to displayed directly into

Storing the menu option

Once the selected menu option is highlighted simple press the button to store the new option.

Repeat the operation until the ‘ page 8.

RS-485 Network Connection

Figure 23 below shows how to connect the VibWire-201-Pro RS-485 port to a USB-485-Pro media converter. The USB-485-Pro media converter connects to a Windows PC and allows measurements from VibWire-201-Pro to displayed directly into the Q-LOG data display and recording software.

The VibWire-201-Pro acts like any other intelligent 485 device, and will operate with any other suitable device 3rd party device on the network.

Frequency

Menu-Out

’ display appears. See Figure 15 on

Remote Mode Port = SDI-12 Address = 1 Measurement Count = 1032

Selected Sensor

2534.86

Frq Dig

6424.95

992.28

Val

VibWire-201-Pro

Hz Dg SI

Res Tem

2016-01-20 08:40::17

3003.56

24.89

Fig-22

Ohm C

SDI-12 Data

SDI-12 Port

Part No: USB-SDI12-Pro

12 DC

Fig-23

Res Tem

2016-01-20 08:40::17

3003.56

24.89

Ohm C

+ RS-485

- RS-485 12 DC

Gnd/0V

Remote Mode Port = RS485 Address = 3 Measurement Count = 153

Selected Sensor

2534.86

Frq

6424.95

Dig

992.28

Val

Gnd/0V

Part No. USB-485-Pro

VibWire-201-Pro User Manual 10

Technical Specification

The current technical specification for the VibWire-201-Pro is:

Description

Physical Size Weight

Battery Auto-logging no back light

Communication Ports 1 x RS-485 Slave - 1200 Baud, 8 data, 1 stop, no parity

External Power Supply 10 - 15V DC @ 100 mA min specification

Vibrating Wire Measurements

Analogue Input 24 Bit Sigma Delta

Sensor Excitation Auto-resonance - Fully automatic

Operating Frequency 400 - 15 KHz

Measurement Resolution 0.001 Hz RMS - 20 to 70 Deg C

Measurement Accuracy ± 0.014% of reading - 20 to 70 Deg C

Spectral Analysis Resolution Window Function

Update Rate 0.25 Sec typical

SI Units Hz, Digits (Hz2/1000), Eng Units

Temperature Measurements

Analogue Input 24 Bit Sigma Delta

Measurement Range - 50 to 100 Deg C

Measurement Accuracy ± 0.25 % of reading - 20 to 70 Deg C

SI Units Deg C

Cal Factors Steinhart-Hart

Bridge Type Half Bridge

Expansion Options

1 x MUX-16/32 expansion unit

Scan rate 2 Sec/Chan - using expansion module

Memory Expansion 1 x SD Card = 1 .. 32 GB

(Excluding boot cover)

Height 184 mm - Width 74 mm - Depth 32 mm 125 g

4 x AA - 2000 mA/Hr 6 mA - standby - 340 Hours continuous use 20 mA/Hr with display - Low 50 mA/Hr with display mode - Full brightness 150 mA/Hr with MUX-16/32 - Peak (Note-1)

1 x SDI-12 - - 1200 Baud, 8 data, 1 stop, no parity 1 x micro USB configuration port

Differential Coil (V+) and Coil(V-) for direct connection of sensor, excitation and resonant frequency measurement. Digital signal processing for excellent noise rejection,

1024 line Zoom FFT - with data weighting

0.001 Hz Hamming

(Quadratic Cal Factors)

Used for temperature compensated vibrating wire measurements, and stand-alone temperature sensors for Geotechnical applications. Ratio-metric measurement.

Beta Value - lower performance using Beta

1..32 - 2 Wire Freq inputs

1..32 - Temp (thermistor) inputs

1..16 - 4 Wire vibrating wire sensor inputs

250 ms update to screen

Temperature Measurements

The VibWire-201-Pro is factory set to use the most common thermistor calibration factors that is fitted into most manufactures vibrating wire sensors. The thermistor is used to measure temperature.

The thermistor calibration factors are taken from the sensor material manufactures data sheet and are as accurate as possible.

The voltage input measurements are factory calibrated to traceable national standards, and can be externally calibrated upon request. There is an extra charge for operation.

Common VW Sensor Thermistor Part Numbers

YSI 44005 Vishay 1C 3001 B3 RS Part no: 151-215

The part numbers are for 3 K Ohm thermistor commonly used by most different VW sensor manufacturers to measure temperature

The sensors give 3 K Ohm resistance at 25 Deg C

The most common material used in these sensors uses material type F from GE sensing.

Under most practical applications, the in-built thermistor calibration factors will give accurate results without the User having to be concerned with understanding of process involved.

Simply connect the thermistor output from the sensor to the VibWire-201-Pro and the device will instantly display the temperature.

Sources of Error

The principle source of error in field measurements will the added resistance due to long sensor wires. The resistance added to the thermistor measurement will give a fixed offset error. Make temperature measurements as close to the temperature sensor as is practically possible.

Calibration Factor Error

Take care when using the calibration factors supplied on a vibrating wire sensor manufactures data sheet. The factors are often given from sample sensors taken from a batch and not necessarily from the individual sensor being used. Where possible ensure that the sensor manufacturer calibrates the sensor and supplies all test data so that the calibration factors can be verified.

Storage file format CSV - Comma Separated Variables

Logging Rates

16 x 4 Wire Mode 32 x 2 Wire

No. Pre-set Sensor Configurations

File Type Format DOS

Operating Temp Range -20 to 75 Deg C

Storage temperature >5 Deg C with batteries installed.

Note-1 - Use external supply for long term monitoring with MUX-16/32 unit 150 mA peak .

Internal to flash card 1s, 10s, 1 Min, 10 Min, 1 Hour, 6 Hours MUX-16/32 Expansion 30 Sec/Chan 1 minutes

10 user defined sensors options

Associated Part Numbers

Part No:

VibWire-201-Pro - FFT VW Sensor Interface USB-485-Pro - Isolated USB to 485 media converter USB-SDI12-Pro - Isolated USB to SDI12 media converter MUX-16/32 16 x 4 Wire/ 32 x 2 Wire Expansion unit

Device Configuration Software

The VibWire-101-Pro configuration software runs with on most modern Windows platforms such as XP, 8.1 and 10 operating systems.

Table 1

User Defined Stein-hart-Hart Calibration Factors

The VibWire-201-Pro has the facility to enter User defined Steinhart-Hart calibration factors.

The calibration factors are entered into the device using the VW201cal software package. See figure 57 on Page 20.

Sensor Information

A calibration report should be provided with each vibrating wire sensor and it will contain all the information required to convert Hertz, the frequency value output by the sensor into appropriate SI units (e.g., displacement, pressure etc..)

1. If the values in the Calibration Report are in digits, use the following equation to convert the VibWire-201-Pro frequency values from Hertz to digits.

Digits = Frequency 2

1000

(Hz2) 1000

2. Use the gauge factors and polynomial provided in the Calibration Report to

calculate SI units.

The VibWire-201-Pro uses:

Natural Units = A(R1)2 + B(R1) + C + K(T1-T0) - (S1-S0)

(Equ 1)

Calibration equation.

The software automatically identifies the USB port in use and allows for a true plug and play operation. Simply enter the sensor calibration factors and select the ‘Connect’ button to store parameters into the device.

Download the software at:

and this is expanded to:

= C(R1-R0)2 + B(R1-R0) + A + K(T1-T0) - (S1-S0)

(Equ 2)

when initial conditions in the measurements are involved.

The additional terms used in equation 2 only change the constant parameter ( A ) when used.

VibWire-201-Pro User Manual 11

Pre-set Sensor Configurations

The VibWire-201-Pro cab be configured using the

http://www.aquabat.net/downloads/

VW201cal.zip

VW201cal.exe

software which is available as a free download at:

Features

The VW201cal software gives the User the ability to configure the VibWire-201-Pro in an easy to use Windows environment.

Automatically sets time and date to host PC. Set the User defined frequency and temperature calibration factors. Select preset thermistor calibration factors. 20 Pre-set sensor configuration options.

The sensor names entered into the VW201cal software appear on the VibWire-201-Pro sensor list.

The VibWire-101-Pro supports up to 20 built-in User defined vibrating wire sensor configuration options.

Sensor Configuration

Thermistor Calibration Factors

EPP-30V

5200 2

SI Unit = A + B(R1)+ C(R1)2 + D(T)

Process Option

0 = Frequency,1 = Digits, 2 = SI Un its

-1720.23

-2159.487

2.8388E-1

3.1728

-0.0870

where R1 = Current Reading T = Temp Deg C D = Thermal Factor

Thermistor Type T0, T1, T2 ….. etc

Figure 24 opposite shows the VibWire-201-pro Setup software used for entering the calibration factors for a Vibrating wire sensor.

This Window is used to enter the frequency component calibration factors. The calibration factors are used to enable the VibWire-201-Pro to display measurements directly in engineering SI units.

Write configuration details into the device.

VW sensor calibration factors

Select Therm istor Calibrat ion Window

Default-Therm

300025

Fig 25 Default Thermistor Calibration Factors

Downloading and Installing device setup software

Download the VW201cal software from:

http://www.aquabat.net/downloads/VW201cal.zip

Run the install software script.

3.35E-3

2.56E-4

2.08E-6

Fig 24

7.30E-8

Default Steinhart-Hart calibration factors

Figure 25 opposite shows the thermistor calibration settings window for the

The factory set default thermistor parameters for T0 are displayed.

SI Units

In order for the SI unit formulae be applied the process option has to be set to ‘2’. Fig 24 above shows how this is done.

Setting the process option to 0 or 1 shows results in Hz or Digits.

VW201cal

software.

Follow the on-line instructions to install and activate the software.

Once activated the main Window shown in Fig 24 above will be displayed.

Automatically setting the Real-time Clock

The VibWire-201-Pro can be used as a stand-alone VW sensor data logger recording measurements automatically, and also to take single shot readings under ‘User’ control. In order to act as a logger the internal real-time clock has to be set.

The real-time clock is used to keep track of the time and date of a measurement. The clock is set automatically the VibWire-201-Pro is connected to the PC via the USB cable and the ‘

Upload’

button is activated. Once the sensor data is

written into the device then the clock is automatically synced to the host PC.

Common VW Sensor Thermistor Part Numbers

The part numbers are for 3 K Ohm thermistor commonly used by most different VW sensor manufacturers to measure temperature

The sensors give 3 K Ohm resistance at 25 Deg C

The most common material used in these sensors uses material type F from GE sensing.

YSI 44005 Vishay 1C 3001 B3 RS Part no: 151-215

Pre-defined Thermistor Calibration Parameters

The VibWire-201-Pro uses the following predefined calibration parameters to defining the operation of the 3 K Ohm thermistor temperature sensors built into most Vibrating Wire sensors.

(Steinhart-Hart Factors)

A = 3.35E-3, B = 2.56E-4, C = 2.08E-6, D = 7.30E-8

VibWire-201-Pro User Manual 12

Channel Expansion Options

The VibWire-201-Pro is expanded using a single MUX-16/32 expansion unit.

The expansion unit offers 16 x 4 wire or 32 x 2 wire sensor operations.

16 x 4 wire mode offers 16 x Frequency and 16 x Temperature inputs.

The 32 x 2 Wire sensor mode offers 32 x Frequency inputs or 32 x temperature measurements.

The VibWire-201-Pro can record data internally onto a SD memory card, or remotely across a digital network to a stand-alone PC running the Keynes Controls Q-LOG applications software.

32 x 2 Wire Expansion

Output Ports on the MUX-16/32 Unit

Out-0 Port

(MUX-16/32)

- VW Sense

+ VW Sense

- Therm

Sensor Port

+ Therm

(VW-201-Pro)

Unit shown below is configured for 32 x 2 wire frequency measurements.

Sequencing MUX

MUX 0 21

Selected Sensor

Frq

Res

Ohm

3003.56 C

24.89

Tem

Out-1 Port

(MUX-16/32)

2534.86

Dig

6424.95

992.28

Val

Fig-26

16 x 4 Wire Expansion

4 Wire operations records frequency and temperature simultaneously.

Sequencing MUX MUX 1 12

Selected Sensor

Frq

Res

3003.56

24.89

Tem

Dg SI

MUX-16/32 Output Ports

Out-0 Port

(MUX-16/32)

Output Ports on the MUX-16/32 Unit

- VW Sense

+ VW Sense

- Therm

Sensor Port

+ Therm

(VW-201-Pro)

Dig Val

Out-1 Port

(MUX-16/32)

2534.86

6424.95

992.28

Ohm C

Fig-27

2 Wire operations records frequency or temperature but not both at the same time.

MUX-16/32 Expansion Unit - User manual

For 32 x 2 wire operations the output ports on the MUX-16/32 expansion unit are connected together.

Full details for configuring and the MUX-16/32 unit can be seen in the User manual.

Download the User manual at

http://www.aquabat.net/downloads/mux32manualv1.pdf

VibWire-201-Pro User Manual 13

Number of Channels

The VibWire-201-Pro data supports 4 data recording modes:

Single Channel

- Records measurements from the sensor attached directly to the instrument.

The following modes require the MUX-1632 expansion unit to be fitted:

MUX-16/32 Expansion Unit

16 x 4 Wire (VW and Temp) 32 x 2 (VW only) 32 x 2 (Freq)

- 32 x Freq

- 32 x Temp

- 16 x Freq + 16 x Temp

when using the MUX-16/32 expansion unit 32 measurement values are stored into each record.

To select the data recording mode

1. Make sure a flash memory card is installed into the VibWire-201-Pro, See Page 5 Figure 2.

2. Starting at the default ‘Frequency’ display, use the ‘

The

Mux Mode

3. Use the ‘Up’ and ‘

menu system will appear.

Down

’ keys to select the mode of operation of the instrument.

Menu In

’ key to select ‘

System Setup

’ followed by ‘

Setting Scan Mode

Frequency

2534.86

Selected Sensor

Frq Dig

Val

2534.86

6424.95

992.28

Hz Dg

Res

3003.56

Tem

2016-01-20 08:40::17

24.89

Ohm C

Menu-In

Down

Main Menu

Sensor No Logger

Multiplexer Remote System

Use the ‘Up’ and ‘ to select the ‘Logger’ option.

Down’ keys

Menu-In

Down

System Setup

Log Now Autolog Mode

Scanning mode

Recording Interval

Set working MUX ID

Use the ‘Up’ and ‘Down’ keys to select the ‘Scanning mode option.

’

Menu-In

Mux Mode

Selected Scanning mode

Single Chan 16x4 (VW and Temp)

32x2 (VW only )

32x2 (Temp only )

’ menu options.

Fig-28

Menu system define s the number of measurements made after each scan. The MUX-1632 expansion unit must fitted for 16x 4 wire or 32 x 2 wire operations.

Data Recording

The VibWire-201-Pro can store measurements directly on to a SD flash memory card.

Max SD Card = 32 Gb (160 million records)

DOS format file system.

The data table stores results in C.S.V. (Comma separated variable), for direct importing into spreadsheet such as Microsoft Excel.

Data Recording Options

The VibWire-201-Pro supports 3 x logging modes. Single Channel, 16 x 4 Wire and 32 x 2 Wire.

Single Channel

Both the 16 x 4 Wire and 32 x 2 wire recording modes require the use of the MUX-16/32 expansion unit.

16 x 4 Wire

16 x Frequency + 16 x temperature.

32 x 2 Wire -

- Continually records a single measurement from a sensor connected to the sensor port on the device.

1 x single measurement on demand. Single Channel on MUX-16/32 Unit.

- 32 measurement values made up of

Important Note

The VibWire-2-1-Pro will adjust automatically to the fastest sample rate

32 x Frequency measurements.

allowed for the number of channels to be scanned.

The fastest sample rate that is allowed for a 32 channel operation operation is 60 seconds (1 min).

Set Logging Interval

Frequency

2534.86

Selected Sensor

Frq Dig Val

Fig-29

2534.86

6424.95

992.28

Hz Dg SI

Res

3003.56

Tem

2016-01-20 08:40::17

24.89

Ohm C

Menu-In

Down

Main Menu

Sensor No Logger Multiplexer Remote System

Use the ‘Up’ and ‘Down’ keys to select the ‘Logger’ option.

Menu-In

Down

Logger

Log Now Autolog Mode Scanning mode Recording Interval

Set working MUX ID

Use the ‘Up’ and ‘Down’ keys to select the ‘Recording Interval’ option.

Menu-In

Down

Select Recording Interval

1 Second 10 Second

1 Minute 10 Minute 1 Hour 6 Hour

1 Second - only for single chann el operations 10 Second

VibWire-201-Pro User Manual 14

17 Commands for scanning MUX-16/32 in 32 x 2 wire mode

Table 2 below shows the commands used to scan the MUX-16/32 unit in 32 x 2 wire mode.

The MUX-16/32 unit has to be set to operate in 32 x 2 Wire mode. This is done via the VibWire-101 setup menu. See page 17, section 25.2 for instruction in setting the ‘Scan Mode’.

In 32 x 2 wire mode the channel counter displays the range 0 .. 31.

Start Measurement

Command

aM2!

aM3!

Description Channel

MUX ID=0 Chan 0..15 Chan 0 .. 15 Returns 16 values x Freq aD0! aD1! aD2! aD3!

MUX ID=0 Chan 16..31 Chan 16 .. 31 Returns 16 values x Freq aD0! aD1! aD2! aD3!

Number

No. Data Values SDI-12 Get Data Command

Channel Select Display - Fig 30

Table 2

Chan 0..15 Freq

Fig 31 - Output Ports used in 2 Wire mode.

32 x 2 Wire mode

Each get data command returns 4 values.

Chan 16..31 Freq

When operating in 2 wire mode, the VibWire-101 scans the MUX-16/32 in blocks of 16 channels.

Under normal operating conditions Channels 0-15 are scanned first and the results stored into a data table. This is followed by the scanning the final block of 16 channels and storing the measurements. Table 1 shows the sequence of the 2 blocks of commands needed to scan the MUX-16/32 unit in 2 wire mode.

16 Switching between 2 & 4 Wire Mode Operation under SDI-12 Command

The MUX-16/32 expansion unit supports 2 and 4 wire VW sensor operations. The selection between 2 and 4 wire sensors is undertaken using software commands only and these are issued across the MUX-16/32 using the SDI-12 control port. The same procedure for issuing instructions for changing the ID number is followed as is used for selection the mode of operation.

The following SDI-12 command selects 2 or 4 wire sensor operation:

aXDn! (n=0 or 1) Sets 2 or 4 wire operations on the MUX-16/32.

Channel Select Display - Fig 31

16 x 4 Wire mode

Example SDI-12 command ‘ 0XD1!‘ sets MUX-342 with ID=0 to 4 Wire mode.

18 Commands for scanning MUX-16/32 in 16 x 4 wire mode

Table 2 below shows the commands used to scan the MUX-16/32 unit in 16 x 4 wire mode.

The MUX-16/32 unit has to be set to operate in 16 x 4 Wire mode. This is done via the VibWire-101 setup menu. See page 17, section 25.2 of the User Manual for instructions in setting the ‘Scan Mode’.

In 16 x 4 wire mode the channel counter displays the range 0 .. 15.

Fig 32 - Sensor Output Ports

Start Measurement

Command

aM2!

Identification

MUX-0 Chan 0..15

MUX

Channel Number

Chan 0 ..15 returns 32 values

No. Data Values SDI-12 Get Data Command

16 x Freq + 16 x Temp

aD0! aD1! aD2! aD3! aD4! aD5! aD6! aD7!

Table 3

To VW frequency port on the VW101

To temperature port on the VW101

After each MUX has been scanned, and all 32 sensor readings have been taken, then the following command is required to download the data from the VibWire-101 to a data table in the AquaLOG data logger. The same command should work on any suitable SDI-12 data logger.

Get data:

aD0! aD1! aD2! aD3! aD4! aD5! aD6! aD7!

16 x Freq Readings

16 x Temperature Readings

where each command aD0! returns 4 values

VibWire-201-Pro User Manual 15

IMPOR

The MUX

VibWire-2

Full deta found in

http://ww

The MUX is assign SDI-12

TANT NOTE

-16/32 expansion 01-Pro for addition

ls for sensor conne

he User manual at

w.aquabat.net/dow

-16/32 unit operati

d using the Q-LOG

ontrol Port

16 x 4 Wire Expansion

Frequently Asked Questions

nit is used to expa

d the

al channel.

tion and operation

can be

nloads/mux32m

g mode, 16x4 wire software via the in-

nualv1.pd

or 32x2 wir

built

What cable is used to connect the VibWire-201-Pro to a data logger.

A single 4 core ribbon cable is all that is required for the most common SDI-12 and RS-485. No special cabling is required for this instrument.

Figure 61 on page 21 shows the connections to a logger

Farnell Web Site:

Farnell Part No.

Manufactures Part No.

What might cause an VibWire-201-Pro to not communicate with a data logger?

http::/www.farnell.co.uk

150427

05091504-01-50M

The maximum cable core diameter is 2 mm for the sensor terminated with a plug for connection to standard sensor input.

The sensor terminal posts can take larger diameter cables.

There is no programming required for setting up and using the VibWire-201-Pro.

Sequencing MUX MUX 1 12

Selected Sen sor

Frq

Res

3003.56

2534.86

24.89

Tem

Dig

6424.95

992.28

Val

MUX-16/32 Output Ports

Output Ports on the MUX-16/32 Unit

Out-0 Port

(MUX-16/32)

-VW Sensor

Earth

+VW Sensor

- Therm

+ Therm

Out-1 Port

Sensor Port

(VW-201-Pro)

(MUX-16/32)

32 x 2 Wire Expansion - Frequency Measurements

Sequencing MUX MUX 1

Selected Sensor

Frq

Res

3003.56

2534.86

6424.95

24.89

Tem

992.28

MUX-16/32 Output Ports

Dig Val

Ohm C

Fig 33

Ohm C

The most common cause for lack of communication is faulty wiring. Check that the cable cores

are correctly terminated by into the plugs. Use a DVM to test each core and pin on the plugs for continuity.

Make sure the correct network port is selected.

For SDI-12 communications see menu system in Figure 21 on Page 9,.

For RS-485 option - see menu system on Figure 22 on page 9.

Network ID number

Make sure the ID number used to identify the VibWire-201-Pro on a network is set correctly. See menu system on page 29 section ‘

Setting network address’

, or by the standard SDI-12

commands on page 20. A full list of User commands is shown on page 19.

The ID number for the measurement command used to acquire data from the VibWire-201-Pro must mach the ID number set in the device.

Logger using command: 3M! 3D0! - then the ID number should be set to ‘3’.

3003.56

24.89

2016-01-20 08:40::17

Ohm C

Page 30 shows the menu options to set the ID number.

IMPORTANT NOTE

Remote Mode

Port = SDI12 Address = 3 Measurement count = 4312

Selected Sensor

Frq Dig

Val

2534.86

6424.95

992.28

Res Tem

Dg SI

When multiple devices are being used on the same network, each device must have a unique ID number assigned. Failure to do so will prevent the VibWire-201-Pro from communicating to a logger unit.

Out-0 Port

(MUX-16/32)

Output Ports on the MUX-16/32 Unit

Earth

Sensor Port

-VW Sensor

+VW Sensor

(VW-201-Pro)

Out-1 Port

(MUX-16/32)

Fig 34

32 x 2 Wire Expansion - Temperature Measurements

Sequencing MUX MUX 1 20

Selected Sensor

Frq

Res

Ohm

3003.56

MUX-16/32 Output Ports

Out-0 Port

(MUX-16/32)

Output Ports on the MUX-16/32 Unit

Earth

- Therm

+ Therm

Sensor Port

(VW-201-Pro)

Out-1 Port

(MUX-16/32)

99.00

Dig

9.90

Val

24.89

Tem

Fig 35

How fast can the VibWire-201-Pro make a measurement?

Currently the fastest data recording rate is 1 measurement / Second for a single channel.

The fastest sample rate is supported on the SDI-12 and 485 network measurements using the Q-LOG free data acquisition and display software, and to the in-built data recording to the flash memory card.

Where Can I download a copy of Q-LOG software ?.

Download a copy of the Q-LOG software at:

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

Erratic Measurements - most common cause.

When the battery level goes below 3.9 Volts the measurements can be come noisy and erratic. Replace the batteries in the unit for a new set, or connect an external power supply. Faulty sensor coil seating which can be seen in the sensor results spectra.

How do make measurements on my PC without any programming experience.

Use the free Keynes Controls Q-LOG software which can downloaded without restriction from the companies web site, and one of the USB-SDI12-Pro or USB-485-Pro media converters. The Q-LOG Windows software can be configured

The Q-LOG software gives complete control of the data acquisition operations for the VibWire201-Pro in a simple to use Windows environment. See page 18 for additional information.

The USB-SDI12-Pro and USB-485-Pro media converters can both be power the VibWire-201-Pro direct from a PC USB port. No additional power supply is required.

Install the software - Assign USB COM Port details - Scan Network ( Identify Instruments) - Start Data Acquisition.

The Log files are stored to C:/Q-LOG/Logfiles/’Timestamp-file’.TXT in a format suitable for reading by a spread sheet package,

‘Timestamp-file.TXT

’ is a unique log file in CSV ( Comma Separated variable).

VibWire-201-Pro User Manual 16

Selecting a MUX-16/32 Channel

The VibWire-201-Pro can be used to manually select a channel on the MUX-16/32 expansion unit and take readings.

The feature enables the user to test sensors during an installation, or to use the MUX-16/32 expansion unit as a switch box. The channel selection works in 16 x 4 wire and 32 x 2 wire modes.

MUX-16/32 Settings for operation with VibWire-201-Pro

Signal and Control Ports

Fig-37

The MUX-16/32 must be set to

ID = 0

The setting of the MUX-16/32 ID number is easiest set using a USB-SDI12-Pro media converter and Q-LOG software. See Page H Appendix A for details.

Out-1 Port

(VibWire-201-Pro)

N/A

12V

Control Port

(MUX-16/32)

N/A

12V

Wiring diagram for the MUX-16/32 control port to the VibWire-201-Pro

Fig 36

1. Connect the MUX-Ctrl port on the VibWire-201-Pro to the Control port on the MUX-16/32 expansion unit.

Figures 33 to 35, page 15 above show the wiring diagram for the MUX control ports.

MUX-16/32 User Manual

Full details for the operation and configuration of the expansion unit can be found at:

http://www.aquabat.net/downloads/mux32manualv1.pdf

MUX Control Port

Sensor Output Ports

FFT Sensor Spect ra

0 1 2 3 4 5

Selected Sens or

2534.86

Frq

6424.95

Dig

992.28

Val

6 10 11

KHz

Res

Tem

6 V

131415

3003.56

24.89

2016-01-20 08:40::17

Mux-16/32 Channel Control Port

Ohm C

Fig-38

Manually setting the MUX-16/32 Channel

Manually set the MUX-16/32 channel number. The channel range will depend on the scan mode assigned. The MUX Chan number indicator will change as the ‘Up’ and ‘Down’ keys are pressed.

Fig-39

Menu-In

3003.56

24.89

2016-01-20 08:4 0::17

Ohm C

Frequency

2534.86

Selected Sensor

Frq Dig

Val

MUX 0 .. 15 4 Wire Mode - MUX-16/32 Channel counter changes between 0 ..15 0 .. 31 2 Wire Mode - MUX-16/32 Channel counter changes between 0 ..31

2534.86

6424.95

992.28

Res Tem

Main Menu

Sensor No Logger

Multiplexer Remote System

Main Menu

Off - Initial Position 0 - 15 (4 Wire) and 0 - 31 (2 Wire)

Channel Select Display

Menu-In

Actions Menu

Multiplexer

Manually set MUX

Set working MUX ID

The menu system above shows the commands to follow to manually adjust the active MUX channel.

Menu-In

MUX Chan No.

Channel Counter

MUX-ID No

Use the ‘Up’ and ‘ The channel counter on the MUX-16/32 will update automatically.

Sequencing MUX

MUX 0

Selected Sensor

Frq

Dig

Val

Res

2534.86

6424.95

992.28

Down

’ buttons to change the MUX channel.

3003.56

24.89

Tem

Dg SI

Ohm C

Down

Off - Initial setting

MUX-ID No

The image above shows the Initial Startup display should the MUX channel selection be activated without a MUX-16/32 expansion unit connected.

Sequencing MUX

MUX OFF

Selected Sensor

Frq

2534.86

Dig

6424.95

992.28

Val

Res

Tem

3003.56

24.89

Ohm C

Fig-40

16 x 4 Wire mode

32 x 2 Wire mode

Changing the MUX Channel Number

Use the ‘Up’ and ‘

Down

’ keys to manually select the MUX-16/32 channel.

As the keys are pressed the MUX-16/32 channel will increment.

The Channel counter on the menu system will increment/decrement at the same time as the MUX-16/32 unit.

VibWire-201-Pro User Manual 17

Sensor Configuration Example - Piezometer

The following example shows how to configure the VibWire-201-Pro to use an Encardio-rite vibrating wire piezometer water level sensor. The piezometer is configured in a similar way as to a strain gauge but has the added complication for requiring barometric correction for true water level measurements.

The example will use the linear formula to convert frequency to pressure into SI units of k Pa. (Kilo Pascal )

A copy of a sample calibration data sheet used in this example is shown in

Appendix-A

The example demonstrates how to allow for initial conditions to improve the accuracy of the measurements.

Temperature Compensated Calibration Factors - Results in Natural (SI) Units

The example below demonstrates how to use the calibration factors on a sensor data sheet, and local initial conditions to determine the factors to be used by the VibWire-201-Pro to give results in SI Units. The example sensor data sheet, see Appendix-B page 32 gives results in kPa. Use suitable scaling factors to convert the output into other SI Units. The formula section of Q-LOG can be used to convert pressure into other SI Units.

P(kPa) = G(R1-R0) + K(T1-T0) - (S1-S0)

where G = Linear gauge factor from the calibration data sheet.

= C(R1-R0)2 + B(R1-R0) + A + K(T1-T0) - (S1-S0)

where A B and C are the calibration factors used in the VW201pro software.

— Sensor formula for conversion frequency (in Digits) to kPa

— Formula used by VW201pro software for configuration

For this example there is no C(R1-R0)2 and there is no barometer to correct for local barometric conditions.

Therefore the absolute water level measurements in kPa formula is now:

P(kPa) = B(R1-R0) + K(T1-T0) - temperature corrected absolute level readings

The initial condition measurements from the sensor are:

6064.0 Digits at 14 Deg C.

Different initial conditions will change final offset value only.

Important Information

Use the Barom-SDI12 or Barom-485 digital barometer modules to give local barometric levels in kPa for local atmospheric effects.

G = 2.8388E-1 - See Cal Data sheet

P(kPa) = G(R1-6064) + K(T1-14)

= 2.8388E-1*(R1-6064) - 0.087*(T1-14)

= (2.8388E-1*R1)-1721.448 - (0.087*T1)-1.218

where R0 = Initial reading in Digits T0 = Initial sensor temperature Deg C

R1 = Current Frequency reading in Digits T1 = Current temperature reading in Deg C

= (2.8388E-1.R1) - (0.087.T1) -1720.23

This formula gives the output from the sensor in k Pa and allows for local temperature correction.

Examining the formula now gives the parameters required for the VW201Cal software

A = -1720.23

B = 2.8388E-1

Process option - Digits

D = -0.0870

S1 = Current barometer value - SI Unit KPa S0 = Initial Barometer reading - SI Unit KPa

Model: Barom-SDI12

Fig-42

Figure 41 shows how the VW201cal software is configured for a Encardio-rite EPP-30V piezometer as sensor 3.

The output SI unit value will be in units kPa.

EPP-30V

VWP-2021

-1720.23

3.22346

2.8388E-1

-0.0870

The output will be temperature compensated.

Process Option setting

In order for the VW201-Pro to use the calibration factors in the software then the process option has to be set to 2.

Thermistor Type

Fig 41 - VW201Cal Software - EPP-30V Piezometer.

Menu-In

Res Tem

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Fig 43

Ohm C

Main Menu

Sensor No Logger

Multiplexer Remote System

Use the ‘

Up’

and ‘

The assigned sensor calibration factors will then be used by the VibWire-201-Pro to determine the SI units for any sensor that is attached.

Frequency

2534.86

Selected Sensor

Frq

2534.86

Dig

6424.95

992.28

Val

Menu-In

Down

’ keys to select the sensor type.

Select Sensor No

Sensor no: 3 Name: EPP-30V

Select Sensor No

Sensor no: 0 Name: Undefined

Default display with no sensors defined.

Enter thermistor type into cell labelled ‘ Results in Deg C.

Pre-set Sensor Configuration Settings

Once the calibration factors have been determined and set into the

VW201cal

software, then they will be automatically loaded into the VibWire-201-Pro. This is done by simply connecting the device to the host PC and pressing the ‘

All defines sensor types will be loaded into the device and can be selected using the menu system. See Figure 44 opposite.

Simplified Calibration Factors

Frq Dig

As is shown above the temperature effects on the sensor are not significant and for most applications can be ignored.

Val

If the initial conditions are:

6064.0 Digits

THERM

Connect’

’.

Button.

then the simplified formula becomes much easier to use

kPa = G (R1-6064) gain from the calibration data sheet G = 2.8388E-1 therefore kPa = 2.8388E-1(R1 - 6064) where R1=current reading = 2.8388E-1 - 1721.44

The output on the VibWire-201-Pro will now be the height of the water above the initial condition starting point in SI units kPa.

This gives the calibration factors for the VW201cal software as A = -1721.44 and B = 2.8388E-1.

VibWire-201-Pro User Manual 18

Q-Log - Quick User Guide

The VibWire-201-Pro is integrated into the Q-LOG data acquisition software.

The VibWire-201-Pro can be used with both the SDI-12 and RS-485 ports in the Q-LOG software.

A copy of the Q-LOG software can be downloaded at:

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

A copy of the User manual can be downloaded at:

http://www.aquabat.net/downloads/Q-log-guidev2.pdf

Factory Default Settings

The VibWire-201-Pro has the following default settings

ID = 0 Single Channel Operation for both SDI-12 and RS-485 networks

Sample Rate Options

The sample rate options for single channel operation is:

Figure 44 opposite shows how to connect a VibWire-201-Pro to the SDI-12 network using the USB-SDI12-Pro media converter.

Important Note

Ensure that the COMM port number for the USB media converter and network type have been set in the ‘Configuration’ Window of Q-LOG.

Failure to do so will prevent the software from identifying the VibWire-201 device.

Fig-44

SDI12

12 DC

Gnd/0V

Image below shows how the VibWire-201-pro is connected to the USB-SDI12-Pro media converter.

Fig-45

Remote Mode Port = SDI-12 Address = 1 Measurement Count = 1032

Selected Sensor

2534.86

Frq Dig

6424.95

992.28

Val

VibWire-201-P ro

Hz Dg SI

Res Tem

2016-01-20 08 :40::17

3003.56

24.89

Ohm C

1s , 10s, 30s,1 min, 10 min, 1 hour, 6 Hours.

Maximum sample rate

= 1 Hz.

Example

The example below assumes that the Q-LOG software has been installed and that a USB-12-Pro media converter is in use. 3rd party SDI-12 media converters will work with the Q-Log software but Keynes Controls do not support them.

USB-SDI12-Pro media converter using COMM Port 1 on the operating system.

The Q-LOG software can be used by third party media converters but they are not supported by Keynes Controls Ltd.

Logging Configuration Window

Enter Comm Port identified for USB media converter

Example shows COMM Port-1. Use device manager to locate port no.

Data Recording Sample Rate - 60 Secs

Log Filename - 20160215_1116.txt (time stamped file)

Automatically create a new time stamped log file.

- Unique file each time selected.

Network Type Selection - SDI-12

Fig-46

Options for SDI-12 and RS485 networks

Before data can be obtained from a device on the SDI-2 network it first has to be identified.

The procedure for identifying sensors and interfaces on a network is called ‘

Scanning for Devices

’. Figure 48 below shows how to Scan for devices.

Scanning for Devices

Select the ‘

Scan for devices

’.

The Status LED indicators on the USB-SDI12-Pro media converter illuminate during the scanning operations.

Fig-48

For a single device connected connected to a SDI-12 network then the device list will appear as shown below.

Any addition sensors on the SDI-12 network require a separate and unique ID number, and will appear in the list below.

To PC USB Port

External Power Supply

SDI-12 Data

+12V DC

0V/Gnd

Network Port on

(USB-SDI12-Pro)

SDI-12 Data

+12V DC

SDI-12 Port

(VibWire-201-Pro)

0V/Gnd

For stand-alone operations, or when multiple VibWire-201-Pro are connected onto the network, then an external power supply should be connected to external power supply port on the USB-SDI12-Pro.

The USB-SDI12-Pro can power 2 units directly from the USB port of a PC,

Fig-47

External +12V DC

0V/Gnd

+12V DC

0V/Gnd

Ports on the USB-SDI12-Pro device

SDI-12 Data

Network Port on

(USB-SDI12-Pro)

SDI-12 Data

+12V DC

SDI-12 Port

(VibWire-201-Pro)

Common Keynes Controls device identifier strings.

Product: ID string:

Network Ports

RS-485

D+

SDI-12

12V G

D-

12V

VibWire-101 VW sensor interface 13KEYNESCOVW101A011

VibWire-108 VW sensor interface 13KEYNESCOVW108A016

PIEZO-RM water level sensor 13KEYNESCOPRESR001

Barom-SDI-12 barometer 13KEYNESCOBAROMR003

I-P-I 13KEYNESCOIPINCL005

AquaDAT sensor interface 13KEYNESCOAQUDAT008

Single channel strain gage 13KEYNESCOSTRAIN027

VibWire-201-Pro 13KEYNESVWRDOA001

PC Data Acquisition - Start data recording

Select the ‘

Start Logging

’ menu option and measurements will be made and

data stored to the results file. See Fig QQ below.

If a USB-SDI12-Pro or USB-485-Pro media converter is being used then the device status LED indicators will flash after each measurement.

Q-LOG will run with 3rd party media converters but Keynes Controls do not support devices we don’t manufacture.

0V/Gnd

0I!013KEYNES VWRDOA001

Q-LOG Devices List Window.

Vibrating Wire R eadout Unit

Fig-49

Note.

When multiple devices and interfaces are on the same network then select ‘

to set cell locations into the data table. The Press the ‘Setup’ button - from the list select ‘

Vibrating Wire Readout

High speed single channel data acquisition readings for a single channel vibrating wire sensor can be made.

Auto assign option will make sure the results

from different devices wont overlap.

’.

Start Data Logging menu option

Auto Assign

Fig-50

’

Start Data Acquisition

VibWire-201-Pro User Manual 19

SDI-12 / RS-485 Supported Commands

The following commands are supported by the VibWire-201-Pro and are used by data loggers and data acquisition systems. The commands have been included to allow the VibWire-201-Pro to operate easily with third party data loggers that support industry standard SDI-12 command set.

Prefix the commands in Table 3 below with the ‘%’ for use in RS-485 data logger and acquisition systems.

Example, the command ‘

al!

’ becomes ‘

%al!

’. – access the device identifier string.

Description Master

Acknowledge active

Send ID:

provided to complement SDI-12 protocol

Address Query

identifies instrument address and commonly used on single instrument operations only.

Change Address:

used to change instrument address from a (inital) to b new ID for network operations

Start Measurement

instruct an instrument to make measurement

Concurrent measurement:

Used for starting a measurement for all instruments on a network at the same time.

This command frees RS-485 bus for other devices

MUX-16/342 Expansion Unit

Thermistor 1 & 2

Thermistor Type 1

Temperature sensor settings

Parameters from the sensor calibration sheet

VibWire-201 Response

a! a\r\n

aI! a13KEYNESVWRDOA001\r\n

Part Description assigned by Keynes

Used to make command set SDI-12 compatible

aAb!

= initial address b = new address

aM!

= address of instrument

example 0M! starts scan for ID 0

aC!

start measurement instrument address ‘

32 x 2 Wire Measurements

aM2! aM3!

16 x 4 Wire Measurements

aM2!

D0-D4 = Frequency D4-D7 = Temperature

VibWire-201 supports 3 thermistor types

aXT1RE! aXT1T0! = 25 aXT1BET!

aD0! aD1! aD2! aD3! - 16 x Freq

aD0! aD1! aD2! aD3! aD4! aD5! aD6! aD7!

a’

a\r\n

Where a = ID number 0 - 9 (standard) / (a..z) Enhanced SDI-12 0 - 9 / a - z for RS485

b\r\n

a : b

= number 0 - 9 or a - z

a0261\r\n ****

instrument with address a returns 1 x 4 wire reading in 1 second.

a0268\r\n

initial response only after receipt of instruct and no response when data ready to be sent.

+xxxx.x+xxxx.x+xxxx.x+xxxx.x\r\n

Resistance at 25 Deg C T0 - generally 25 Deg C Beta Value

Steinhart-Hart Parameters Thermistor resistance/temp calculation

Thermistor Type 2

Temperature sensor settings

Parameters from the sensor calibration sheet

Steinhart-Hart Parameters Thermistor resistance/temp calculation

Page 36 shows sample calibration data sheet

VW Sensor Input Channel Settings

Sets the process option for frequency calculations

Thermistor Temperature Calculation

aXT1ST0! aXT1ST1! aXT1ST2! aXT1ST3!

aXT2RE! aXT2T0! = 25 aXT2BET!

aXT2ST0! aXT2ST1! aXT2ST2! aXT2ST3!

aXCH0FN!

F = Frequency type N = VW Channel 0 .. 7

aXT1TYn!

a = ID n = integer 0 .. 2

A in Steinhart-Hart B in Steinhart-Hart C in Steinhart-Hart D in Steinhart-Hart

Resistance at 25 Deg C T0 - generally 25 Deg C Beta Value

A in Steinhart-Hart B in Steinhart-Hart C in Steinhart-Hart D in Steinhart-Hart

0 = output in Hz 1 = output in digits = F^2/1000 2 = use formula A + B*digits + C*digits^2 + D*temperature

digits = Frequency2 in units of Hz

0 = resistance ratio - thermistor data sheet (Rt/R25)

1 = Beta value calculation 1/T = 1/T0 + log(r)/Beta where r = Rt/R

2 = Steinhart-Hart equation

1/T = A + B(Ln Rt/R25) + C(Ln Rt/R25)2 + D(Ln Rt/R25)

Table 3

VibWire-201-Pro User Manual 20

Examples Of Using RS-485/SDI-12 Commands

The following examples show how to undertake the various tasks needed to setup and make readings across the RS-485 and SDI-12 networks. The command structure between the SDI-12 and RS485 models is essentially the same except all RS-485 commands use the ‘%’ sigh at the start of all instructions.

The SDI-12 networks only supports up to 10 instruments with address range: 0 to 9 unless otherwise stated.

Changing the ID Number (address)

The following example demonstrates how to change the instrument ID number from the default factory setting 0 to 5.

Use the command ‘aAb!’ where a = Start ID b = Final ID

SDI-12 RS-485

master sends: ‘

master sends ‘

0A5!

’ Instrument responds

%0A5!

Instrument responds

5\r\n

Return New Line (5 representing new ID number)

5\r\n

Return New Line (5 representing new ID number)

ID Number Query

This command has been included to remain compatible with the SDI-12 and should be used for used with single instrument operations only. Useful command when identifying ID numbers for instruments to be deployed on a multi-instrument network.

The example below is to show the ID number of a single instrument

Use the command ‘?!’ .

master sends: ‘?!’ Instrument responds 3

\r\n

Return New Line (3 is the ID number)

Start a measurement for Instrument on a network

The following example shows how to start measurements on instruments with ID numbers 2

The instruments will start their measurement operations but will not send data across the network until instructed to do so.

Use the command ‘ Use the command ‘

aM!

’ where a = Instrument ID Number

%aM

!’ for RS-485 network operation

Problems with measurement systems - Spikes in measurements

A common source of noise for vibrating wire measurement systems is earth - current loops.

Earth loop effects cause spikes in measurement values and can be intermittent. Earth loops are often caused by power supplies and multiple earth connections between different sections of a measurement system. Earth loop noise can cause random spikes

Figure 51 shows how some distributed applications are wired together and this is how different earth potentials can form current loops between the subsystems.

Isolated Power Source

The VibWire-201-Pro operates using its internal AA batteries and as such is totally isolated from the power sources used in permanently installed data acquisition and recording systems.

Data

Acquisition

System

Local

Instrumentation

metal mounting p anel

Network Link

Data

Acquisition

System

Local

Instrumentation

metal mounting p anel

Network Link

Fig-51

Data

Acquisition

System

Local

Instrumentation

metal mounting p anel

The VibWire-201-Pro when running on batteries operates in full isolation to any other device.

Connection to MUX-16/32 expansion unit.

Fig-52 MUX Control Signal Connection to VibWire-201

Control Port

(MUX-16/32)

N/A

12V

N/A

12V

Out-1 Port

(VibWire-201-Pro)

Local Earth

Diagnostics

The VibWire-201-Pro is a perfect tool to assist engineers in the setup and diagnostics of Geotechnical systems.

A common problem is that a geo-technical monitoring system seems to be running correctly and then spikes appearing at random in a sensor trace keep appearing.

Spikes can be caused by interference on a sensor cable or loop noise.

Fit the problematic sensor signal directly into the

VibWire-201-Pro

and set it up for stand-alone logging to the flash memory card. The logging operation can be set fast for short periods of time, or to save battery life to slow sampling.

The device runs completely isolated from any other device. The recording will be be purely the sensor signal and will not be effected by any other local device. If the sensor trace shows no sign of irregularities then the problem is on the fixed installation.

It is highly unlikely that cable pickup noise, including any environmental noise such as mains 240V 50 Hz can effect any measurements on the VibWire-201.

A sensor can be isolated from a main system and run independently.

MUX-16/32 Expansion Unit

A MUX-16/32 expansion unit can be run directly from the batteries in the VibWore-201-Pro so blocks of sensors can be tested directly and the results recorded by the device to the flash memory card.

VibWire-201-Pro User Manual 21

Data Record to Flash Memory Card

External Power Supply

The VibWore-201-Pro can store reading directly onto a flash memory card that can be installed into the unit.

Insert Photograph

Fig-55

Insert a flash memory card into the VibWire-201-Pro.

Make sure the device is DOS formatted before use.

This operation can be carried out on any PC or laptop.

High Speed - Single Channel Data Recording

Single channel data recording and signals analysis is the most common operation undertaken with the VibWire-201-Pro. High speed data capture can be undertaken by setting the sample rate to 1 Hz.

1 Sec, 1 Minute, 10 Minutes, 1 Hour, 6 Hours

Use the ‘Recording Interval’ menu to set the desired sample rate.

Down Up

Use the up and down keys to select the desired logging interval.

Menu-Out

Select Menu-Out to store the menu option.

Measurement period = 1 Sec

(Fastest logging rate)

Recording Interval

Select Recording Interv al

1 Second 10 Second 1 Minute 10 Minute 1 Hour 6 Hour

Fig-54

For long term monitoring applications an external power supply can be fitted onto the VibWire-201-Pro.

The external power supply is applied to the +12 V and Gnd (G) pins on the SDI-12 and RS-485 ports.

RS-485 Port

Fig-53

12V

-D

External power supply input ports.

SDI-12 Port

GS 12V

The VibWire-201-Pro only acts as a slave device when connected onto a digital network. As such the external power supply only powers the device and no other device upon the network.

Isolated USB Media Converters

Memory Card Type

The VibWire-201-Pro requires SD type flash memory cards.

SD cards are usually 4 GB storage size or above.

Error Message

Do not use MMC type flash cards, even though same physical size as SD type memory cards since they will not work in this unit.

NO SD – this can appear on the display to indicate that the wrong card type has been installed into the unit.

MMC type cards typically have storage capacity of 256 Mb to 4 Gb

Once the recording interval is set the VibWire-201-Pro will commence recording measurements to the flash memory card.

Removing The Memory Card

Using a small amount of applied pressure to the flash memory card. Push the card into the device to release it from the holder.

The card will now be ejected from the VibWire-201-Pro and can be read using a PC or another reading device supporting DOS file system.

The data stored on the card is in CSV (Comma separated format) and can be read by spread sheet and similar software.

The VibWire-201-Pro can be powered directly from the a PC USB port using either of the USB-SDI-12 or USB-485-Pro media converters.

The USB-SDI12-Pro and USB-485-Pro media converters offer the simplest way for externally powering the VibWire-201-Pro and interfacing to a PC for data recording operations.

The Keynes Controls media converters are supplied with the Q-LOG data acquisition and logging software and so make a very cost effective

Figures 56 and 57 below shows the pin-outs for the media converters.

USB-485-Pro

Isolated USB-485 media converter pin-outs

Gnd

Not Used

SDI-12 Data

+9..16V DC V-OUT

Internal Power

+9..16V DC V-OUT

Gnd

USB-485-Pro

Isolated USB-485 media converter pin-outs

Gnd

RS485 - (B)

RS485 + (A)

+9..16V DC V-OUT

Internal Power

+9..16V DC V-OUT

Gnd

As soon as the card is remove the data logging operations will stop.

Storing the menu option

Once the selected menu option is highlighted simple press the button to store the new option.

Repeat the operation until the ‘

Frequency

’ display appears.

See Fig 15 page 8.

Default Sample Rates

The default sample rate for any VibWire-201-Pro in 32 x 2 wire is 1 minute

The default sample rate for 16 x 4 wire mode operation is 30 seconds.

Menu-Out

Fig-56

Fig-57

Full installation instructions can be found at

http://www.aquabat.net/user-manuals/UserManuals.html

2534.86

Selected Sensor (3)

Frq Dig Val

Fig-58

2534.86

6424.95

992.28

Hz Dg SI

Res

3003.56

Tem

2016-01-06 08 :40::17

24.89

Ohm C

Real-time clock

Date & Time Display

VibWire-201-Pro User Manual 22

Worked Example - Spot Welded VW Strain gauge

Note. When the batch factor is missing from the calibration sheet use B = 1.

The following pages demonstrate how to use the VibWire-201-Pro to display values in engineering units. The examples below show the use of a strain gauge and piezometer and give engineering values in micro-strain.

Vibrating Wire Strain Gauge Calibration Factors

Model

Gage Factor

Start Frequency

End Frequency

5200 5202 5204 5210 5214

3.305 0.392 1.421 0.3569 0.3664

450 Hz 1400 Hz 800 Hz 1400 Hz 1400 Hz

1200 Hz 3500 Hz 1600 Hz 3500 Hz 3400 Hz

Table 4

Strain Gauge Type Nominal Batch Factor (B)

5200

5202/5204/5210

5214

0.96

0.92

0.97

Table 5

Please Note.

The calculation allows for initial measurement conditions an gives the results in SI units - micro-Strain

A common procedure for calculating strain from a vibrating wire strain gauge uses the formulae:

(R1 - R0)G x B

= R1.G.B - R0.G.B

where R0 = Initial condition reading (Digits) R1 = Current reading (Digits) G = Gauge Factor B = Batch factor

The equation can be re-written as:

R1.A - D

where D = R0.G.B and A = G.B

Digits = Frequency 2

1000

(Hz2) 1000

In order to use vibrating wire gauges and to display the results on engineering units, the calibration factors are based on

using Digits (Hz2) as the measurement value.

R0.G.B = Constant Value = A in the Windows calibration factors

Now

Example. A model 5200 strain gauge is to be used with the VibWire-201-Pro to monitor strain on a bridge member. The gauge has been preset to operate at its mid-point and all subsequent measurements are to be taken from this initial condition.

Model 5200:

Using Table 4,

Start Freq = 450, End Frequency = 1200 Hz (Range = 1200 - 450) - Initial setting of the gauge = 450 + (Range / 2) = 825 Hz.

Gauge factor

3.305

and

Batch factor

0.96

VibWire-201 Results Display

The VibWire-201-Pro has to be set to show results in Digits, see Page 8 Figure 16.

R1.A - D - Units micro-Strain

R1.A - D

Therefore

R1 * 3.1728 - 2159.487

If the strain gauge under load alters its operating frequency to 827.00 Hz then the display

The Figure below shows how to set the calibration factors for the Model 5200 strain gauge into the VW201cal setup software.

Sensor Number

5200

where A = 3.305 x 0.96 = 3.1728

3.1728

-2159.487

and

Thermistor type

D =

(825 * 825) * 3.305 * 0.96

1000

2159.487

Calibration factors for a Model 5200 strain gauge set as Sensor 3

Sensor

26.254

Selected Sensor (3) 5200

Frq Dig

Val

Res

827.00

Tem

683.929

26.254

Engineering Units

SI Units - Strain

3003.56

24.89

2016-01-20 08 :40:17

Nat Units

Example display for a vibrating wire strain gauge showing in output in micro-Strain.

Ohm

The output allows for initial

measurement conditions.

Note 5200 - is just a sensor manufacturer part number.

model 5200

Process Option 1

0 = Frequency 1 = Digits 2 = SI Units

Fig-59 - Inserting Calibration Factor into VW201cal software

Sensor

827.00

Selected Sensor (3) 5200

Frq

Dig

Val

827.00

683.929

26.254

Hz Dg

Res

3003.56

Tem

2016-01-20 08 :40:17

24.89

Ohm C

Digits

683.92

Selected Sensor (3) 5200

Frq Dig

Val

827.00

683.929

26.254

Res Tem

3003.56

24.89

2016-01-20 08 :40:17

Ohm C

VibWire-201-Pro User Manual 23

Temperature Calibration Factors

Figure 60 below shows the thermistor setup Window of the VW201cal software.

The software currently supports 3 different thermistor configuration options. Most sensor manufactures use the same thermistor type for their temperature monitoring and so 3 defined thermistor type configuration options is sufficient for most applications. It is unlikely that any setting other than the default thermistor parameters are required for most sensor temperature readings regardless to the sensor manufacturer.

The VW201cal software has option T0 pre-defined to the most common thermistor Stein-hart-Hart calibration factors used for the thermistor’s built into vibrating wire sensors. These factors will work satisfactorily with most manufactures devices.

Keynes Controls recommends that option T0 be selected when setting up and new sensor, and only changed if proved inaccurate for a defined sensor.

To write new calibration factors into a VibWire-201-Pro unit make sure that the device is connected to a USB port on the host PC running the VW201cal software. See Figure 64 on page 23.

VW sensor calibration factors

Select Thermistor Calibration Window

Default-Therm

300025

3.35E-3

2.56E-4

2.08E-6

7.30E-8

Default settings

Fig 60

Adding a new thermistor type

This is a simple operation using the VW201Cal Windows software package.

Calibration parameters and what they mean

Each thermistor obtained from a reputable supplier will have the following calibration factors defined on it’s calibration data sheet. R0 = Resistance at temperature T0. For vibrating wire sensors these are most commonly set at R0 = 3 K Ohm, and T0 = 25 Deg C. The resistance of the thermistor is 3 K ohm at a temperature of 25 Deg C.

Each sensor has 4 calibration factors labelled A,B,C and D on calibration sheet. These factors are used by a polynomial equation to convert resistance to temperature.

Sample Calibration Factors

The following factors have been created for example purposes only.

A thermistor with T0 = 25 Deg C and R0 = 3300 Ohms. Stein-hart Hart calibration factors are: A = 4.6541E-3, B = 2.675E-4, 3.05E-6, 5.07E-8.

1. Select the ‘Thermistor’ Tab.

2.56E-4

Default-Therm

Therm-1

3.35E-3

300025

3300

4.6541E-3

2.675E-4

2.08E-6

7.30E-8

3.05E-6 5.07E-8

2. Assign name - Good idea to use a unique name for each new sensor type.

3. Fill in the calibration constants into the table.

Cell ‘A’ = 4.6541E-3 Cell ‘B’ = 2.675E-4

Fig-61 VW201cal - Thermistor Calibration factors

repeat until all the cells are filled.

Once the cells are filled simply press the ‘Connect’ button to write the parameters to the VibWire-201-Pro.

VibWire-201-Pro User Manual 24

PC based Water Level Recording with Barometric Correction.

Figure 58 opposite demonstrates the minimum system parts required to undertake barometrically corrected water level recording using the VibWire-201-Pro and a barometer module direct to a PC.

Fig-62

Configuration Setup

Fig-64

MUX-16.32 Expansion unit

Fig-63

SDI-12 Network Operations

3rd Party Intelligent Sensor

Data Logger

Stand-alone data recording

USB-SDI-12-Pro media converter

Connection to a PC

3rd Party Intelligent Sensor

SDI-12 Network

Digital Network Port Options

The VibWire-201-Pro operates in the same fashion as to the standard VibWire101 but the advantage that a single device can be used on both SDI-12 and RS485 digital networks.

Device USB Configuration Port

The simplest way to configure the VibWire-201-Pro is to use the free Windows VW201cal software which operates under the Microsoft Windows operating system.

Use the USB cable provide with the instrument to connect the device to a port on a laptop.

Setup the configuration parameters using the VW201cal software.

Data Logger Operations

Res

Tem

2016-01-20 08:40::17

6 V

3003.56

24.89

Ohm C

Digits

2534.86

Selected Sensor (4) EPP-30V

Frq

2534.86 Dg

Dig

6424.95

992.28

Val

Micro-USB

SDI-12 Port

(VibWire-201-Pro)

Press the ‘

Upload

’ button and the assigned configuration parameters will be

written into the unit.

The in-built sensor configuration parameters will be updated. The ‘ ‘

Time

’ real-time clock parameters of the device automatically set to the host PC

Date

’ and

clock settings.

Note

It is possible to configure the device using SDI-12 commands, however this

SDI-12 Port

(Data Logger)

much more difficult task than just using the VW201cal software.

Connection to a Data Logger

Figure 61 opposite demonstrates how the VibWire-201-Pro is connected to a Keynes Controls AquaLOG data logger unit.

12V

Additional sensors

The VibWire-201-Pro will operate with any third party data logger supporting

SDI-12 or RS-485 communications and capable of issuing the measurement

12V

commands.

Measurement Command:

aM! aD0!

- Start measurement - Get data where a=ID number

Fig-65

When operating on a digital network the VibWire-201-Pro acts as a slave device only. The logger issues the measurement commands and the VibWire201 responds like any other intelligent sensor.

Data Logger Unit

VibWire-201-Pro User Manual 25

Temperature Measurements

The VibWire-1201-Pro is capable of accurate temperature measurements suitable for many geotechnical and laboratory measurements. The thermistor temperature sensor built into most vibrating wire sensors connects directly into the device.

The VibWire-201-Pro can make temperature measurements simultaneously to the frequency measurements when in 16 x 4 Wire mode.

The VibWire-201-Pro can also act as a stand-alone temperature recorder in 32 x 2 Wire mode using the MUX-16/32 expansion unit.

Factory Set Steinhart Hart Calibration Factors

The VibWire-201-Pro is supplied pre-set to use

Steinhart-Hart 0th order (A) Steinhart-Hart 1st order (B) Steinhart-Hart 2nd order (C) Steinhart-Hart 3rd order (D)

Beta 5234

3.35E-3

2.56E-4

2.08E-6

7.30E-8

The VibWire-201-Pro default thermistor settings will give accurate results for most of the different manufactures vibrating wire sensors.

Full adjustment to the calibration factors can be carried out using the VW201cal.exe Windows software.

Testing the temperature measurements

Fit a 3.3 K Ohm to the thermistor input port.

Set the thermistor input uses the default calibration parameters as shown above.

22 Deg C fixed point - 3.3 K Ohm temperature test resistor

Thermistor Input Signal Port

3.3 K Ohm metal film resistor +/- 1% Tolerance

Fig-66

Frequency

99.00

Selected Sensor

Frq

Dig

Val

9.80

99.00

9.80

Res Tem

Dg SI

3.3 K Ohm Sense Resistor

Ohm

3333.01

22.80

2016-01-20 08:40::17

Thermistor Resistance Value

VW sensor Temperature Deg C

With no frequency input to the VibWire-201-Pro the screen will default to 99.00

The device measures and displays the sense resistor in Ohms, see Fig 66 opposite. Even though the sense resistor is marked at

3.3 K Ohm, due to the tolerance of the device it is unlikely that exactly 3.3 K Ohms will be supplied.

There is a small variation on the value sensor resistor. The example shows 3.3K + 1.0% = 3333 Ohms.

The higher value sense resistor, then the lower the temperature that is being simulated.

52 Deg C fixed point - 1 K Ohm temperature test resistor

1002.07

12.09

Ohm C

Thermistor Resistance Value

VW sensor Temperature Deg C

Thermistor Input Signal Port

1.0 K Ohm metal film resistor +/- 1% Tolerance

Frequency

99.00

Selected Sensor

Frq

Dig

Val

9.80

99.00

9.80

Fig-67 1 K Ohm Sense Resistor

Res Tem

Dg SI

2016-01-20 08:40::17

Metal film resistors have excellent stability under load and severe environmental conditions, and can be sourced from many different suppliers.

VibWire-201-Pro User Manual 26

Sensor Problems and Diagnostics

The spectral display feature of the VibWire-201-Pro offers the user excellent tool for testing and diagnosing sensor problems. The ability to observe a sensor signal in the frequency domain enables the User to observe that a sensor installed and operating correctly. Should a sensor installation be badly installed then the spectra will show unusual spectral components.

Due to how the vibrating wire sensors operate, each sensor in a system can be examined from a central point, such as where the senor cabling goes into a logger system, since the cable length from the sensor to the device has little to no effect on the measurements to be made. All sensors can be examined before installation into a permanent logging system.

Spectra (Hz)

VW Spectra Screen

Fig 68

Figure 68 opposite shows the spectral display screen used to display the frequency components of a vibrating wire sensor signal on the VibWire-201-Pro. See page 30 for the menu selection operations required to access this display.

FFT Sensor Spectra

The images below demonstrate the use of the Spectral FFT display to show the operating features for a arc welded vibrating wire strain gauge.

The figures below demonstrate what the User should observe when using a strain gauge and some of the operating characteristics

Frequency (Hz)

Digits - Hz2/1000

Engineering Units

No SI Unit calibration factors in use.

0 1 2 3 4 5

Selected Sensor

Frq

1757.72

3089.63

Dig

3089.63

Val

SI Units

6 10 11

Battery Voltage

KHz

Res

3691.43

Tem

2016-01-20 08:40::17

Date Time

20.33

131415

Ohm C

Sensor Operating Characteristics

The examples below are taken from a UK manufactured spot welded vibrating wire strain gauge.

Due to the physical size of the strain gauges and regardless to the manufacture, nearly all of the spot welded vibrating wire strain gauges have similar operating characteristics. The strain gauges typically have high operating frequencies when deployed correctly.

The Operating frequency of the sample gauge is between 1500 to 3 K Hz. The sensors give out their optimum signal strength only when operating within there defined range, and installed correctly onto a suitable structure. A arc welded strain gauge has to be pre-tensioned before use.

Fundamental Frequency

2564.81

6578.66

= Fundamental Frequency in Hz

= Fundamental Frequency in Digits

Thermistor Housing

0 1 2 3 4 5

Coil Housing

Fig-69 Typical Spot Welded Strain Gauge

Harmonic

Frequency

The spectral plot shows clearly the error in the sensor operating operation.

6 10 11

KHz

Defined operating range of sensor

Fig-70 Free Standing Strain Gauge Spectra

1837.17

View looking into the end if the gauge

Flange Plate

Maximum Operating Frequency

The figure above shows a typical application for the use of the spot welded vibrating wire strain gauge.

Free Standing Strain Gauge

Fig 70 opposite shows a typical spectra for a free standing gauge.

The fundamental frequency as calculated by the VibWire-201-Pro is outside the defined operating rage for this type of sensor.

The spectral display clear shows that a fault condition has occurred.

Figure 71 shows additional details that can be seen on a sensor spectra. The additional harmonics can be caused with flaws in the sensor installation.

Fundamental Frequency

Harmonic

Frequency

2 Frequency

Harmonic

0 1 2 3 4 5

The harmonic component levels can vary in amplitude depending on how well the sensor has been seated to the structure. Any out of axis stresses on the sensor will cause harmonic levels to change.

KHz

10 11

131415

0 1 2 3 4 5

6 10 11

KHz

131415

Fig-71

VibWire-201-Pro User Manual 27

VW strain gauge - Pre-tension gauge mounted onto a structure.

Once the strain gauge is mounted onto the structure it should be pre-tensioned using the mount to operate inside the defined operating range as specified by the manufactures data sheet.

The example below shows a typical spectra with a sensor pre-tensioned to operate at 1700 Hz. The sensor is correctly attached to a structure.

Fundamental Frequency

1702.61

2898.88

0 1 2 3 4 5

= Fundamental Frequency in Hz = Fundamental Frequency in Digits

The harmonic component levels can vary in amplitude depending on how well the sensor has been seated to the structure. Any out of axis stresses on the sensor will cause harmonic levels to change.

6 10 11

KHz

131415

Fig-72

Coil Housing

Flange Plate

View looking into the end if the gauge

Fig 72 above shows what a spectra should be like for a perfectly fitted vibrating wire strain gauge sensor. The fundamental frequency will vary for depending on the application.

In this example it is just possible to see that harmonics in the resultant spectra. The harmonics can disappear altogether as the operating frequency increases. The spectra makes is very easy for the operator to see that the sensor.

VW strain gauge - Failed or loose weld

Fundamental Frequency

0 1 2 3 4 5

If one of the flange plates fails and come away from the structure then spectral results similar to that below will occur.

6 10 11

0 1 2 3 4 5

KHz

6 10 11

KHz

6 10 11

KHz

1702.61

2898.88

131415

2002.88

4011.52

131415

1837.17

3375.19

131415

= Fundamental Frequency in Hz

= Fundamental Frequency in Digits

= Fundamental Frequency in Hz = Fundamental Frequency in Digits

Fig-73

Permanently fixed to structure

Welded flange plate to structure still attached,

Coil Housing

This arm of the gauge has come away totally , or has a cracked weld onto the flange plate.

Fig-74

The fundamental frequency can vary considerably. The 3rd harmonic levels can become higher magnitude than fundamental and so the recorded results will be erratic. The VibWire-201-Pro results will oscillate to values between the fundamental and harmonic signal component.

VW strain gauge - Badly seated flange plate

If the sensor flange plates are not seated correctly, or if a sensor arm is stressed away from its normal direction of operation, then the sensor frequency response can be contaminated by unwanted harmonics, see Fig 76 below.

Permanently fixed to structure

Welded flange plate to structure still attached,

Fig-75 Strain Gauge with bent arm.

bend on the sensor arm

Figures 74 and 75 opposite show badly fitted sensors.

Depending on the amount of miss-alignment or stress put onto the sensor coil then the fundamental frequency will move from the true frequency. The amplitude of the harmonic components can exceed the level of the fundamental and cause erratic results.

Twisting motion on the

Fundamental Frequency

0 1 2 3 4 5

The noise in the spectra are caused by abnormal and complex vibration of the sensor coil.

6 10 11

KHz

131415

Vibrating Wire Sensors - Badly seated coil assembly

Fig-76

Lange plate welded at an angle to the structure.

sensor arm.

Glange plate welded at an angle to the structure.

The unseating of the coil alters the mode of vibration of the sensor. If the sensor is permanently broken then the operating frequency will most likely be out of specification.

Third harmonic levels can appears to be higher magnitude than the fundamental. The effect is that the sensor is operating outside of its design specification. The results can will be erratic

0 1 2 3 4 5

1837.17

3375.19

= Fundamental Frequency in Hz = Fundamental Frequency in Digits

10 11

KHz

131415

One of the most common sources of sensor failure is that the coil assembly has become unseated. This can occur at any the time, however the most common causes are, damaged during transit, impact damage once deployed and simply poor manufacture.

VibWire-201-Pro User Manual 28

APPENDIX-A

Menu System Summary

VibWire-201-Pro User Manual 29

VibWire-201-Pro User Manual 30

Menu Options

The following page shows a summary of the menu options used by the VibWire-201-Pro.

Spectra

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Remote Readout

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Back light

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Dig

Tem

6424.95

992.28

Val

Setting Network Address

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

SDI-12 Port Op eration

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Dig

Tem

6424.95

992.28

Val

RS485 Port Operation

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Scanning Modes

16 x 4 or 32 x 2 scanning mod es require the MUX-16/32 unit to be attached. Remember to set MUX-16/32 scan mode for the e xpansion unit selecting expanded data reco rding modes.

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Recording Interval

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Time & Date Se ttings

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

Menu-In

6424.95

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Auto-Logging

Start the data recording operations to the SD Flash memory card. Single channel mode - is only for the sensor attached directly to the device. 16 x 4 or 32 x 2 scanning modes require the MUX-16/32 unit to be attached. Remember to set MUX-16/32 scan mode for the expansion unit before

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Manually Set M UX-16/32 Chan nel

Manually set the MUX-16/32 channel number. The channel range will depend on the scan mode assigned. The MUX Chan number indicator will change as the ‘Up’ and ‘Down’ keys are pressed.

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

System Information Mode

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Tem

Dig

6424.95

992.28

Val

Sensor Setup

Select a sensor type for measurement operations

Frequency

2534.86

Selected Sen sor

Frq

Res

2534.86

Dig

Tem

6424.95

992.28

Val

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

3003.56

24.89

2016-01-20 08:40::17

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Menu-In

Ohm C

Results Menu Selection Options

Digits

Selected Sen sor

2534.86

Frq Dig

6424.95

992.28

Val

Sensor No Logger Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger

Multiplexer Remote System

Sensor No Logger Multiplexer Remote System

Main Menu

Res

Ohm

3003.56

24.89

Tem

Dg SI

2016-01-20 08:40::17

Menu-In

Sensor

Dig Val

Menu-In

Menu-InMenu-In

Menu-In

Default display with no sensor names defined

Menu-In

992.28

Selected Senso r (3) 5200

Res

2534.86

6424.95

992.28

Remote

System

Remote

Address Serial Comms

System Setup

Logger

System

Logger

Multiplexer

System

Select Sensor No

3003.56

24.89

Tem

2016-01-20 08:40:17

SI Units

Frq

Address Serial Comms

Set Time and Date Speaker ON/Off Backlight Info Reset Defaults

Address Serial Comms

Log Now Autolog Mode

Scanning mode Recording Interval

Set working MUX ID

Log Now Autolog Mode Scanning mode Recording Interval

Set working MUX ID

Set Time and Date

Speaker ON/OFF Backlight Info Reset Defaults

Log Now Autolog Mode Scanning mode Recording Interval

Set working MUX ID

Manually set MUX Set working MUX ID

Set Time and Date

Speaker ON/OFF Backlight Info Reset Defaults

Sensor no: 0 Name: Undefined

Nat Units

Menu-In

Ohm C

Menu-In

FFT Sensor Spectra

0 1 2 3 4 5 6 1011 12

KHz

Selected Sen sor

Res

2534.86

6424.95

992.28

Select Backlight

3003.56

24.89

Tem

2016-01-20 08:40::17

Frq Dig

Val

SDI12 RS485 1200

Mode Of Operation

Select Backlight

Off Low High

Set back light intensity

Selected Serial Com ms

0 1 2 3 4 5 6 7

Select Backlight

SDI12 RS485 1200

Select Backlight

SDI12 RS485 1200

Selected Scanning mode

Single Cha n 16x4 (VW a nd Temp)

32x2 (VW on ly )

32x2 (Temp only )

Select Recordin g Interval

1 Second 10 Second

1 Minute 10 Minute 1 Hour 6 Hour

Set Time and Date

Date 2016-01-06

^^^^

Time 08:25:30

Scan Type

Time Re c No 123

Mux 16x 4 ID=0 CH=0

Selected Sen sor

See Note 1

Frq

2534.86

Dig

6424.95

992.28

Val

MUX-ID No

MUX 0

Device info

Sensor no: 3 Name: EDV-30S

Selected Sen sor

Frq

2534.86

Dig

6424.95

992.28

Val

Select Sensor No

MUX Chan No.

Firmware version 1.1.003 Firmware Date 23 Feb 2016

Storing the menu option

1415

Ohm C

Auto-logging

Sequencing MUX

Once the selected menu option is highlighted simple press the button to store the new option.

Repeat the operation until the ‘ M page N..

Select SDI-12 or RS-485 ports for remote data access across the network.

To optimise the battery life set the back light intensity to make the results clearly visible under the conditions of operation. The battery life will be optimised with the back light switched off.

Sets the ID for the RS-485 and SDI-12 ports.

Sets the VibWire-201-Pro to transmit data through the SDI-12 Port

Sets the VibWire-201-Pro to transmit data through the RS-485 Port

The MUX-1632 expansion units fitted for

16 x 4 wire or 32 x 2 wire operations.

1 and 10 second logging is only available on single channel measurements.

1 min, 10 min, 1 Hour, 6 Hour logging MUX-16/32 expansion unit.

Record Counter

Res Tem

Dg SI

Res

Tem

3003.56

MUX Channel

Ohm C

24.89

Down

Ohm C

24.89

A firmware upgrade facility is available for this product.

Keynes Controls release upgrades and new features software from time to time. The device does not have returned for a factory upgrade and can be carried out.

Use the ‘

The assigned sensor calibration factors will then be used by the VibWire-201-Pro to

Down

determine the SI units for any sensor that is attached.

Note 1

VibWire-201-Pro Scan Modes

Single 16 x 4 Wire 32 x 2 Frequency 32 x 2 Temperature

Use the ‘Up’ and ‘ The channel counter on the MUX-16/32 will update automatically.

MUX 0 .. 15 4 Wire Mode - MUX-16/32 Channel counter changes between 0 ..15 0 .. 31 2 Wire Mode - MUX-16/32 Channel counter changes between 0 ..31

Up’

and ‘

Frequency

Down

’ buttons to change the MUX channel.

Down

’ keys to select the sensor type.

Menu-Out

’ display appears. See Fig

VibWire-201-Pro User Manual 31

Inspection

It is vital to check all the equipment in the shipment as soon as possible after taking delivery and well before any field use is to be carried out.

Check that the case has not been physically damaged in shipment.

Install a new set of batteries. In the case of units shipped with the protective environmental cases then new battery sets should be included with the instrument.

Power on the instrument

With no sensor connected the instrument will default to the screen shown in Figure 11 on page 7

VibWire-201-Pro User Manual 32

APPENDIX-B

Sample Calibration Data Sheets

Sensors

Piezometer Spot Welded Strain Gauge

VibWire-201-Pro User Manual 33

Sample Vibrating wire Displacement Sensor Calibration Data Sheet

Appendix - C

The terms K(T1-T0) are the temperature compensation terms for this sensor.

Temperature compensated readings only work if the thermistor operation is defined.

The example above is for a VW Piezometer and so the engineering units calculations vary between the different sensor types.

For a Piezometer the local barometric levels are taken into consideration.

The engineering units for this example is K Pa

The term (S1-S0) is a constant offset that allows for local atmospheric conditions and be taken from a barometer module such as models Barom-SDI12 or Barom-485.

The VW sensor units have to be set to ‘Digits’ that is Hz

/1000.

VibWire-201-Pro User Manual 34

Company QUALITY FORM

Form No: PQF178

Date: 16th Jan 2016

Sig: IT

Sample Calibration Data Sheet

Vibrating Wire Displacement Sensor

VWP-2021

Calibration Date 12th Nov 2015

VW Readout Unit AVW200

Calibration Jig S/N 463253

Batch No Serial Number Range

11 800000-800016

Batch Factor

1.041

Gauge Factor

3.09651

+ Gauge factor calculated using theoretical values

Calibration of AVW200 S/N 7162 valid from 21st December 2015, Calibrated using equipment which provides

Calibrated in house using slip gauges Cert No GC9033 valid from 17 Nov 2015. Calibrated using

equipment which provides trace ability to UKAS standards (UKAS Laboratory No 9146)

traceability to UKAS standards (UKAS Laboratory No 2510)

Users must establish site zero base reading for Linear calculation purposes

Linear calculation [mm] = GF x BF x (Current Reading - Site Zero Reading)

Details in this example are for demonstration purposes only.

No temperature calibration factors are included. The default factors specified by Keynes Controls are to be used.

= 3.2234 x (Current Reading - Site Zero Reading)

VibWire-201-Pro User Manual 35

Limited Warranty

The manufacturer, Keynes Controls Limited, warrants the VibWire-201-Pro manufactured by it, under normal use and service, to be free from defects in material and workmanship under the following terms and conditions:-

Sufficient information has been provided to Keynes Controls by the purchaser as regards the operating environment to allow Keynes Controls to check compatibility of the VibWire-201-Pro and other component parts.

In the absence of any site data being provided by the purchaser standard construction materials will be supplied. All costs for subsequent modifications will be borne by the purchaser.

The VibWire-201-Pro instrumentation shall be installed or used in accordance with the manufacturer’s recommendations.

The equipment is warranted for 1 year from the date of shipment from the manufacturer to the purchaser.

The warranty is limited to replacement of part or parts which, are determined to be defective upon inspection at the factory. Shipment of defective part or parts to the factory shall be at the expense of the Purchaser. Return shipment of repaired/replaced part or parts covered by this warranty shall be at the expense of the Manufacturer.

Unauthorised alteration and/or repair by anyone which, causes failure of the unit or associated components will void this LIMITED WARRANTY in its entirety.

The Purchaser warrants through the purchase of the VibWire-201-Pro equipment that he is familiar with the equipment and its proper use. In no event shall the manufacturer be liable for any injury, loss or damage, direct or consequential, special, incidental, indirect or punitive, arising out of the use of or inability to use the equipment sold to the Purchaser by the Manufacturer. The Purchaser assumes all risks and liability whatsoever in connection with the VibWire-201-Pro instrumentation from the time of delivery to Purchaser.

RETURN OF GOODS

Returns procedure

If goods are to be returned for either service/repair or warranty, the customer should contact Keynes Controls Ltd for a Returns Authorisation Number, request a Returned Equipment Report Form and, where applicable

The Goods Returns Numbers must be clearly marked on the outside of the shipment.

Obtain from Keynes Controls and Complete the Returned Equipment Report Form , including as much detail as possible, and enclose it with the returned goods.

A copy of Good Returns Form should be faxed / e-mailed to the Keynes Controls Ltd offices, in advance of shipping the goods.

Chargeable Service or Repairs

Inspection & Estimate

It is the policy of Keynes Controls Ltd that an estimate is provided to the customer prior to any repair being carried out. A set charge for inspecting the equipment and providing an estimate is sometimes chargeable.

Packaging and Carriage

All used goods shipped to the factory must be sealed inside a clean plastic bag and packed in a suitable carton. If the original packaging is not available, Keynes Controls Ltd should be contacted for advice. Keynes Controls Ltd will not be responsible for damage resulting from inadequate returns packaging under any circumstances.

Transport & Storage

All goods should be adequately packaged to prevent damage in transit or intermediate storage.

Warranty Claim

(See Limited Warranty Conditions - Page 36)

This covers defects which arise as a result of a failure in design or manufacturing. It is a condition of the warranty that the VibWire-201-Pro must be operated only in accordance with the manufacturer’s instructions and has not been subject to misuse.

VibWire-201-Pro User Manual 36

CONFORMITY

Keynes Controls Ltd Pakenham House Riseley Business Park Riseley RG7 1NW United Kingdom

Tel: +44 (0)118 327 6067 E-mail: sales@keynes-controls.com , Web: www.aquabat.net

Declaration of Conformity

We Keynes Controls Ltd at above address declare under our sole responsibility that the product detailed below to which this declaration relates complies with protection requirements of the following harmonized EU Directives,

Low Voltage Directive 73/23/EEC (as amended by 93/68/EEC) The Electromagnetic Compatibility Directive 2004/108/EC The Construction Products Directive 89/106/EEC

Equipment description Vibrating Wire Sensor Interface Make/Brand: VibWire

Model Number: VibWire-201-Pro

This equipment has been designed and manufactured with reference to EN 61326-1 and EN 61010. All mechanical drawings used in the production of this equipment are based upon BS 8888 and all electrical/electronic drawings are based upon BS 3939.

A technical file for this equipment is retained at the above address.

Ian Thomas

Director

VibWire-201-Pro User Manual 37

VibWire-201-Pro User Manual 38

Remote Communication Options.

The VibWire-201-Pro can be used with a range of communication devices to enable the device to transmit data across wireless networks for cable free operations. The devices include WiFI modem for connection onto popular industry standard WiFI networks, and wireless network modems data recording applications where cabling solutions cannot be practically installed.

WiFi Modem

With this WiFi serial adapter you can connect the VibWire-201-Pro to your computer over a standard WiFi network.

Data can be transferred over TCP/IP, UDP or HTTP with the advantage of using 802.11 b/g/n infrastructure or Adhoc mode (Simple AP / Station Mode) networking which allows you to use existing wireless WiFi network connectivity, and it allow you to connect a standard RS485 to any secure or open wireless network or access point.

The WiFi modem enables data from remote instruments to be recorded automatically into the Keynes Controls Ezi-LOG Web Interface.

Distributed WiFi Data Acquisition System

Remote Out-station

Cable Free RS-485 Network

600

400

200

Distance (m)

The SST-2450 is a spread spectrum radio modem with RS-485 interface port that can be used with the VibWire-201-Pro. It is designed for applications between host data logging computer and remote devices. It is also useful for those applications where cable installation is difficult or impractical.

The SST-2450 can be used in not only peer to peer mode but also multi-point structure.

Based on direct sequence spread spectrum and RF technology operating In ISM bands. The Frequency Range is 2410.496MHz~2471.936MHz. The Channel Spacing is 4.096MHz.

Part No: SST-2450

Wireless RS-485 Network

Different antenna options enabling long and short range operations.

Q-LOG Application

Keynes Controls VibWire-201-Pro User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual