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VibWire-101 - Keynes Controls Ltd

1. Ed Pad SDI 12 Network The isolator module prevents current loop interference from one system from effecting the measurements on the other Earth Cable 45 Network Isolation to prevent current loop effects a Part No NP Isolator Pro Intelligent network isolator unit for SDI 12 and RS485 networks oe Do Additional Intelligent Instrumentation The second panel can contain any additional SDI 12 485 network items Erratic and unstable measurements of vibrating wire sensor signals is often caused by earth loop problems getting into the sensor wiring or network cables To prevent this action from disrupting measurements all actions to prevent a current lop circuit from forming have to be undertaken The first stage of protection is to create and use a common single earth point 46 Common Earth Point The image opposite shows how to connect multiple systems panels Isolated SDI 12 Isolated SDI 12 Network Isolator Module Instrumentation metal mounting panel Network Network Isolator Module Instrumentation metal mounting panel Network Network Isolator Module Instrumentation metal mounting panel a RES Earth Cable Earth Cable F
2. uN biibiseiees CR200 is manufactured by Campbell Scientific Inc VibWire 101 CR200 Logger SDI 12 Network datalaker VibWire 101 DT82E Connect the VibWire 101 to the SDI 12 port on the logger units Refer to the manufactures user guide for pin out details on the specified logger Use commands detailed on pages 6 to gather data from the VibWire 101 Channel expansion can be undertaken above the logger manufactures specification using the MUX 16 32 expansion interface VibWire 101 Vibratina Wire Interface User manual 12 16 0 VW 101 SDI 12 Commands The SDI 12 commands shown below are used by any SDI 12 based data logger to make readings from sensors connected to the VibWire 101 sensor interface when using the MUX 16 32 interfaces for channel expansion xAy Change of address x to y MUX Control aXMJ aXMS n 1 or 2 Sets number of jogs pulses for each increment on the Campbell Scientific 16 x 4 MUX n 0 or 1 Sets single or dual input on the MUX 16 32 aM Take single measurement aM2 Take 16 measurements using Keynes MUX ID 0 no O to 15 aM3 Take 16 measurements using Keynes MUX ID 0 no 16 to 31 aM4 Take 16 measurements using Keynes MUX ID 1 no O to 15 aM5 Take 16 measurements using Keynes MUX ID 1 no 16 to 31 aM6 Take 16 measurements using Keynes MUX ID 2 no O to 15 aM7 Take 16 measurements using Keynes MUX ID 2 no 16 to 31 aM8 Take 16 measurements using Keynes MUX ID 3 no 0 t
3. aD3 Output frequencies 12 to 15 aD4 Output thermistor voltages 0 to 3 aD5 Output thermistor voltages 4 to 7 aD6 Output thermistor voltages 8 to 11 aD7 Output thermistor voltages 12 to 15 VibWire 101 Vibratina Wire Interface User manual 13 17 0 VibWire 101 SDI 12 Programming Examples Stand alone Single Channel Operation The following command is used to start a measurement and return the sensor values for a single 4 x Vibrating wire sensor con nected directly to the VibWire 101 sensor port Query SDI 12 Address return the SDI 12 address Use this command should only be used when a single VW 101 device is connected to the logger unit See image opposite for network configuration Change the SDI 12 ID number xAy x start ID y EndID where ID 0 10 Changing the default factory set SDI 12 ID number OA3 change the factory set ID 0 to ID 3 Get Test data values from a VibWire 101 using a single 4 Wire vibrating wire sensor SDI 12 ID number for the VibWire 101 is 3 3M Start the measurement Operation The instrument responds similar to 0489 where 48 time in second to respond and 1 number of channels being used 3D0 Get data from the VibWire 101 2437 25 123 45 First value frequency Hz Second value Temp in mV Ol returns firmware type manufactures device identifier 013KEYNESCOVW101A003 version 1 3 SDI 12 Keynes Controls manufacture VW 101 product Code 003 version number
4. Change Device Address The example shows the Q Log Change Address Window The address is being changed from From 11 113KEYNESCOMULPLX001 x 5 QLog Recorder View Edit Help Configuration ID 1 to ID 2 Scan for devices MUX ID 1 Start Logging Stop Logging ManualCommand Auto Assign View looking into top connectors of the media converter FF TF FFF TIFF FF FFF rx CLLUILELLLLELILLLE 6G 66 6 CE EA or Vere Lele Ra at helm oe H2V0 O O Se where D SDI 12 Data mi COM 8 SDI 12 Dongle MUX Control Port Important Note Each MUX 16 32 unit must have a unique network ID set if the units are to work correctly with the VibWire 101 MUX control SDI 12 ID String 1113KEYNESCOMULPXO01 port where 1 ID number of the device VibWire 101 Vibratina Wire Interface User manual 24 25 0 Mounting Template The template below can be used for marking the mounting holes needed to secure the VibWire 101 to an enclosure Mounting holes 4 1 mm Drawing to scale VibWire 101 Vibratina Wire Interface User manual 25 26 0 MUX 16 32 EXPANSION UNIT In case of any trouble identifying channels check and ensure the MUX ID numbers are unique and set to the range 0 through to 3 when appropriate Tere ey eT eee eee Fe oe es Cee ere Fees ee oe Channel 1 Channel 2 Channel 4 6 amp amp 24 z 5 2 TRRRB
5. The individual panels are wired together using the Earth connection The unit closest to the main system is earth is then terminated to it All the systems will now be at the same local earth potential connection labelled G on each sensor input AL ing wire 43 1 Vibrating Wire Sensor Screen Installation Fig 55 below shows a Vibrating wire strain gauge connected the the MUX 16 32 unit in 4 x wire mode The sensor cable screen which is identified as it does not have a isolated plastic covering The screen can be connected to any Earth p on the unit Sensor Screen Earth connection to MUX 16 32 uni FFF 3 i l 1E i rT Tj Fig 55 channel Common Earth Connection Temperature Frequenc oint ne Important Note All of the vibrating wire sensor cable screens must be terminated to the MUX 16 32 Ground metal mounting panel metal mounting panel metal mounting panel Earth Cable Earth Cable Fig 54 Common Single Earth Termination Point Connecting Sensor Shield to Earth To minimise the effect of electrical noise and to prevent current loops effects from degrading or causing false measurements the sensor cable sheath should be terminated to the system Earth connection The simplest way to terminate the vibrating wire sensor sheath to earth is to connect the screen to the G earth point on the MUX 16 32 unit All the vibrating wire sensors sensor earth
6. The menu system enables two different thermistor sensor details to be predefined and stored into the instrument The menu system enables both the VW sensor linearisation and thermistor temperature equations to be configured The thermistor resistance and therefore temperature is calculated using the Steinhart Hart equation The output SI unit is in Deg C The VW sensor linearisation uses the industry standard quadratic equation to convert the VW signal into engineering units The parameters for this part of the instrument configuration can be found on the VW sensor calibration data sheet Steinhart Hart Thermistor Configuration for accurate readings The thermistor configuration menu below demonstrates how to configure the thermistor for use with the Steinhart Hart calibration factors Appendix C shows a sample VW sensor data sheet and where the parameters for the Steinhart Hart 0 1st 2nd and third parameters are found Thermistor setup 1 Thermistor Type 2 Resistance at T ohms 3300 3 TO Celcius 25 000 4 Beta 4006 6 5 Steinhart Hart th order A 0 0033540 6 Steinhart Hart 1st order B 2 56217E 4 7 Steinhart Hart 2nd order 0 2 0829E 6 8 Steinhart Hart 3rd order C 3003E 8 U Up T Top _ 11 0 Common Problems he VibWire 101 does not scan Main causes are 1 Check that the SDI 12 network wiring is installed correctly between the VibWire 101 sensor interface and the data logger Identify the VibWi
7. 30 31
8. 6 mV Temp Chan 7 mV AD6 Temp Chan 8 mV Temp Chan 9 mV Temp Chan 10 mV Temp Chan 11 mV AD7 Temp Chan 12 mV Temp Chan 13 mV Temp Chan 14 mV Temp Chan 15 mV VibWire 101 Vibratina Wire Interface User manual 21 19 0 Changing the MUX ID Number Hardware Setup The MUX 16 32 expansion unit ID number is changed exactly like any other SDI 12 address on any similar product The ID number is changed under software control only The default SDI 12 ID 0 The images below demonstrate the simplest hardware configurations used for changing the ID number where D SDI 12 Data SDI 12 Dongle MUX Control Port To operate the RS232 SDI 12 media converter use the program SDI12test exe Download this program from the http www aquabat net web site 20 0 Terminal Port Settings The image opposite demonstrates the hardware configuration used by PC Laptop to change the ID number A simple terminal program running on the PC and connected to a Comm port is all that is needed to use the dongle The dongle converts the RS 232 comm port characters into SDI 12 data It is possible to use the AquaLOG data logger with the VibWire 101 connected to the SDI 12 network to undertake the same task Use a suitable terminal emulator which is VT100 compatible such as the Microsoft Hypert terminal or Token 2 software to send control details to the MUX 16 32 unit RS232 Comms Setup Logger Unit Use 1200 baud 8 data Bits 1 sto
9. COM amp LPT ee Processors Sound video and game controllers 09 System devices Universal Serial Bus controllers Tab System Properties Sistem Restore Automatic Updates Remote i Computer Name Hardware W Advanced System Microsoft Windows lt P Home Edition Version 2002 Service Pack 3 Registered to lan Thomas kenes Controls 5527 OEM O044094 52607 Computer AMD Athlon tm F 1 25 GHz 2 00 GB of RAM Select Device Manager Button Device Manager File Action view Help amp 03 DYDICO ROM drives Floppy disk controllers A Floppy disk drives 4 IDE ATAJATAPT controllers 38 Imaging devices Keyboards Mice and other pointing devices Monitors BY Network adapters EM TM Emulated LAN 21 lt unspecified ELAN name gt BE ATM Emulated LANE lt unspecified ELAN name gt E9 Realtek RTLAOZ9 45 PCI Ethernet Adapter Eg 55 900 PCT Fast Ethernet Adapter ag Ports COM amp LPT y Communications Port COM1 oY ECP Printer Port LPT1 of USE Serial Port COMS Processors Sound video and game controllers Comm Port used by USB M System devices Universal Serial Bus controllers converter Select Ports The example shows COM5 as the port being used by the USB Converter Use the USB Serial Port port number in the Hyper terminal configuration VibWire 101 Vibratina Wire Interface User manu
10. R therm in Ohms Ci T C2 IN Rtherm Ca In Riherm Conversion to Deg C is T C 1 273 15 C1 Co In Rtherm Ca INnRtherm The sensor data sheet will show for the thermistor a calibration equation similar to that below The values for the parameter C1 Co amp C3 will be listed 1 T C Ca Ln Rtherm C3 Ln Rtherm 3 21315 VibWire 101 Vibratina Wire Interface User manual 30 Example In Vibrating Wire sensors is the 44005RC Precision Epoxy NTC Thermistor is commonly used for temperature monitoring applications The data sheet for this product can be downloaded at http www aquabat net downloads 1350009 2 pdf The thermistor data sheet is valid to 11 12 2013 refer to the manufactures data sheet for the latest information An example Excel spreadsheet that demonstrates the temperature calculations can be downloaded at http www aquabat net downloads ThermistorWorksheet xls Example The VibWire 101 is can be set to give ratiometric or mV temperature values from the built in thermistor of a vibrating wire sensor depending upon the sensor configuration Ratiometric values are calculated between the 3300 Ohm pull up resistor and ther mistor resistance and is value between 0 1 The Vibwire 101 has returned a value of 0 663 from the thermistor In the spreadsheet below the VW 101 gives a temperature value Ratiometric of 0 663 The constants A B and C are from the calibration data sheet The spreadshe
11. SDI12 Pro media converter Data from the VibWire 101 along with 3rd party sensors can be displayed in theQ Log software To USB Port on the laptop USB RS485 Pro Connection to a VibWire 101 485 The USB 485Pro media converter connects the VibWire 101 directly to a PC using a USB port The USB 485 Pro not only handles the 485 network signals but also powers the device directly from the computer USB port The USB 485 Pro is an isolated device and this makes the device ideal for local on site measurement solutions RS485 Network Q Log Software Part No USB 485 Pro Part No VibWire 101 485 When used with the Q Log free applications software Fo USB Pan the a stand alone data recording systems easy to create on the laptop VibWire 101 Vibratina Wire Interface User manual 35 50 Logger Control Commands MUX output port The following pages shows a summary of the logger commands used to controls OUT 0 Out 1 C IL C MUX configured frequency output MUX configured temperature sensor ii Therm Therm from vibrating wire sensors output only from vibrating wire sensors Logger SDI 12 Commands Fig 61 OUT 0 PTE Ci out1 MUX 3 First Cell in data table Description aa j OUT 0 OUTA MUX 2 D a ID Number of VW 101 MUX 1 VW Sensor Coil VW Sensor Coil na D aM2 aDO aD1 aD2 aD3 Frequency results MUX 0 4 MUX 16 32 it f 16 4 CHI L L OUT 1 MUX 1 T a
12. Temp 6 Temp 7 7D6 Temp 8 Temp 9 Temp 10 Temp 11 Example 7D7 Temp 12 Temp 13 Temp 14 Temp 15 A VibWire 101 with ID 6 is to scan 2 x MUX 16 32 units configured for 16 x 4 Wire VW sensor inputs The MUX 16 32 units will use ID 0 and ID 1 on the MUX control port network The MUX 16 32 scan mode is setup in the VibWire 101 menu system only Refer to the VibWire 101 User Manual for full details on this operation The SDI 12 commands to make a measurement will be Start measurement 6M2 Upon of this instruction the VibWire 101 scans MUX 0 ID 0 where 6 ID of the VibWire 101 and M2 is the scan instruction for MUX 16 32 with ID 0 Read data 6D0 6D1 6D2 6D3 6D4 6D5 6D6 6D7 ee a 16 x Freq Readings 16 x Temp Readings Port OUT 0 Port OUT 1 Complete command for AquaLOG Start Cell 6M2 6DO 6D1 6D2 6D3 Start Cell D first available data table cell Start Cell 16 Chars 6D4 6D5 6D6 6D7 Start Cell 16 Char T Repeat for MUX 16 32 unit with ID 1 Start Measurement 6M4 The VibWire 101 will on the receipt of this instruction scans MUX with ID 1 Complete command for AquaLOG Start Cell 6M4 6D0 6D1 6D2 6D3 Start Cell 16 Chars 6D4 6D5 6D6 6D7 VibWire 101 Vibratina Wire Interface User manual 18 18 0 Wire Mode Data Structure The data structure returned by the VibWire 101 when using the MUX 16 82 in 2 wire sensor mode is shown below There are no temperature results in this example Frequency Readi
13. Type Selection The Vibwire 101 is a general purpose instrument and can be configured to provide results in Hz Digits Hz SI Units The type of result available depends upon the type and number of vibrating wire sensors to be connected to the instrument When used as a single channel device the VibWire 101 can return Hz Digits and SI units For applications using the MUX 16 32 expansion unit then the VibWire 101 returns data values in Hz and digits For applications using the VibWire 101 in large channel count applications then the data type returned to the recording device should be set to digits Most calculations used to convert the frequency value to engineering values uses a simple quadratic equation which is simplified when the data value is in digits Refer to details on page 5 for using the terminal port and menu system 7 0 MUX 16 32 Expansion Unit The image opposite shows the multiplexer expansion unit used by the VibWire 101 The use of the MUX 16 32 expansion unit is only effective when slow sample rates are required or for low cost applica tions lt takes approximately 3 seconds per channel for the VibWire 101 to take a measurement when using the MUX 16 32 CEE G F G CNG Channel 24 Channel2S Channel 26 Channel 27 MUX 16 32 Expansion Unit 1 64 VW x 4 Wire Expansion 1 128 VW x 2 Wire Expansion Refer to label on the interfaces for correct pin out in case of difficulty Vibrating Wire Sensor Diagram mea
14. VibWire 101 Vibratina Wire Interface User manual 14 17 2 MUX 16 32 Channel Expansion SDI 12 Commands The following section demonstrates a series of programming examples using the SDI 12 commands needed to acquire data from the VibWire 101 expanded using the MUX 16 32 multiplexer units The data is shown stored into the AquaLOG logger data table The AquaLOG uses a spread sheet format data table to store results and uses cell references the same as Microsoft Excel Package MUX 16 32 Expansion The commands shown below are an extension to the standard SDI 12 command set The VibWire 101 currently supports up to 4 x MUX 16 32 expansion units offering sensor expansion from 1 128 x 2 sensor inputs or 1 64 x 4 wire sensor inputs Each MUX 16 32 expansion unit has it s own ID number to identify it on the MUX control network Setting the MUX 16 32 ID number is a feature of the device itself and is not set by instructions issued by the VibWire 101 Download the MUX 16 32 User Manual at http www aquabat net downloads mux32manualv1 pdf MUX 16 32 ID numbers are 0 through to 3 Instructions to use the MUX 16 32 Expansion Units set in 2 Wire Mode For 2 wire vibrating wire operation connect the sensors to the MUX 16 32 expansion units as shown on page 11 The following commands are used to acquire data using the AquaLOG data logger using the VibWire 101 to scan the MUX 16 32 expansion units The VibWire 101 has an SDI 12 ID 7 D 7M2 7D0
15. terminal prompt enter the command 0A1 changes the SDI 12 ID number from 0 to 1 xAy x start ID number default 0 y end ID number Selecting the MUX 16 32 Expansion Unit for operation with the VibWire 101 The VibWire 101 sensor is supplied be default to operate with the MUX 16 32 but can be configured to drive a single 16 channel Campbell Scientific MUX Use SDI 12 command to set the VibWire 101 to use the MUX 16 32 aXJn Example OXJ1 sets the VibWire 101 with ID 0 to use the MUX 16 32 4XJ1 sets the VibWire 101 with ID 4 to use the MUX 16 32 Keynes Controls Campbell Scientific MUX Selection The VibWire 101 sensor interface supports up to 4 x MUX 16 32 expansion units or a single 1 x 16 x 4 1 x 32 x 2 Campbell scientific MUX expansion unit Use SDI 12 command aXJn to set the MUX type OXJ2 tells the VibWire 101 with ID 0 to use Campbell Mux 3XJ1 VibWire 101 with ID 3 to use MUX 16 32 IMPORTANT NOTE In case of error Power off the VibWire 101 after switching between MUX types VibWire 101 Vibratina Wire Interface User manual 27 27 0 Data Logger Solution VibWire 101 ID 0 High Speed Vibrating Wire Sensor Acquisition Solution Media Converter RS 232 to Ethernet Converter Ethernet LAN Fibre Optic PC Data Logger The image below shows one of the standard data logger systems that is available for use with the VibWire 101 instrumentation The system can be expanded for Internet remot
16. x Freq aDO aD1 aD2 aD3 Chan 0 15 Freq aMs MUX 3 Chan 0 15 Chan 96 111 Returns 16 values x Freq aDO aD1 aD2 aD3 Gan iene aM9 MUX 3 Chan 16 31 Chan 112 127 Returns 16 values x Freq aDO aD1 aD2 aD3 Fig 8 Output Ports used in 2 Wire mode Table 1 32 x 2 wire scan instructions 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 17 1 Sequence of commands to read data values The order in which the MUX 16 82 units are scanned is purely based on the order the measurement instructions are issued to VibWire 101 The recommended command sequence is Start measurement command Chans 0 15 Read sensor data for Chans 0 15 into data table Start measurement command Chans 16 31 Read sensor data for Chans 16 31 into data table a LS TE repeat the operation for each MUX 16 32 unit to be scanned Example A VibWire 101 with ID 7 is to scan 2 x MUX 16 32 units configured for 32 x 2 Wire VW sensor inputs The MUX 16 32 units will use ID 0 and ID 1 on the MUX control port network The MUX 16 32 scan mode is setup in the VibWire 101 menu system only Refer to the VibWire 101 User Man
17. 2 and this can be freely downloaded at http download cnet com windows Enter token2 12 3 Microsoft Hyper terminal Software is the most popular terminal emulator software available is is often supplied free with the operating system 12 4 Selecting 2 or 4 Wire mode The selection of 2 or 4 wire mode is a feature of the MUX 16 32 or Campbell Scientific multiplexer units See the User Manual for the specified product for instructions on how to select 2 or 4 wire mode The MUX 16 32 User Manual can be downloaded from the http www aquabat net web site 12 5 Setting the Scan Rate The scan rate of the VibWire 101 is under control of the data logger unit issuing the aMx Start Measurement Command Each channel currently takes 3 second to complete a scan Should a new aMx start measurement command is received before a complete scan off all the channels is received then the multiplexers will be re set and the scan started again See details on page 13 for setting the scan rate for the AquaLOG data logger 13 0 Scan Time Calculation The VibWire 101 currently takes 3 seconds to scan a single channel when using a MUX 16 32 expansion port 4 Wire Mode Total Scan time s 4 wire mode MUX 16 32 3 x 16 48 secs where 16 channel used in 4 wire mode on MUX 16 32 there for 64 Channel Scan Time 48 4 184 seconds 2 Wire Mode Total Scan Time MUX 16 32 3 x 32 96 sec therefore 64 channels scan time 96 4 3
18. 3 and these are used automatically by the VibWire 101 to identify the expansion units connected to the MUX CTRL port The MUX ID numbers are not used by any command to scan or retrieve data In case of any trouble identifying channels check and ensure the MUX ID numbers are unique and set to the range 0 through to 3 when appropriate VibWire 101 Vibratina Wire Interface User manual 16 17 Commands for scanning MUX 16 32 in 32 x 2 wire mode Table 1 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 Description Channel Number No Data Values gg to S 32 x 2 Wire mode Chan nel Select Display SDI 12 Get Data Command Each get data command J returns 4 values aM2 MUX ID 0 Chan 0 15 Chan 0 15 Returns 16 values x Freq aD0 aD1 aD2 aD3 aM3 MUX ID 0 Chan 16 31 Chan 16 31 Returns 16 values x Freq aD0 aD1 aD2 aD3 aM4 MUX ID 1 Chan 0 15 Chan 32 47 Returns 16 values x Freq aDO aD1 aD2 aD3 aM5 MUX ID 1 Chan 16 31 Chan 48 63 Returns 16 values x Freq aDO aD1 aD2 aD3 aM6 MUX 2 Chan0 15 Chan 64 79 Returns 16 values x Freq aDO aD1 aD2 aD3 aM7 MUX 2 Chan 16 31 Chan 80 95 Returns 16 values
19. 63 Mux 3 Frequency Hz DL 5D0 5D1 5D2 5D3 Channels 48 63 Mux 3 Temp Explanation Where 2 represents the instruction to scan channels 0 15 on MUX 0 For 4 wire operation use extension 2 4 6 8 to instruct the VW 101 to scan the MUX 16 82 unit D 5M2 7D0 7D1 7D2 7D3 Start Cell Start Measurement 4 x Freq Values 4 x Freq Values 4 x Freq Values 4 x Freq Values or data MUX 0 Chan 0 3 Chan 4 7 Chan 8 11 Chan 12 15 storage T 5D4 5D5 5D6 5D7 7D3 Start Cell 4 x Temp Values 4 x Temp Values 4x Temp Values 4 x Temp Values or data Chan 0 3 Chan 4 7 Chan 8 11 Chan 12 15 storage Note Raw temperature values are in mV and and are post processed to convert to temp in Deg C Deg F The temperature sensor conversion is often a polynomial and see data sheet from the supplier for full details Formula translation from mV to Deg C can be carried out within the logger unit 4 Wire Data Structure refer to page 11 on how the sensors are wired to the MUX 16 32 Frequency Readings ADO Freq Chan 0 Hz Freq Chan 1 Hz Freq Chan 2 Hz Freq Chan 3 Hz AD1 Freq Chan 4 Hz Freq Chan 5 Hz Freq Chan 6 Hz Freq Chan 7 Hz AD2 Freq Chan 8 Hz Freq Chan 9 Hz Freq Chan 10 Hz Freq Chan11 Hz AD3 Freq Chan 12 Hz Freq Chan 13 Hz Freq Chan 14 Hz Freq Chan 15 Hz and for temperature readings AD4 Temp Chan 0 mV Temp Chan 1 mV Temp Chan 2 mV Temp Chan 3 mV AD5 Temp Chan 4 mV Temp Chan 5 mV Temp Chan
20. 77 oe Pa aet 7 Pad 7 ans PL i ii p 7 oe Reading sensor Results Frequency Hz 1930 8 Temperature m 2491 6 Temperature R RO 276 77 Temperature transducer 0 99640 Frequency Hz 1930 8 Frequency digits 3728 3 Transducer Output 4 8 press any key to continue Beta Value Thermistor Configuration Defines the thermistor Thermistor type 1 calculation type 1 Type Seen i TO ohms This parameter takes 4 Beta 5234 priority of any defined 5 Steinhart Hart Oth order A 0 0 thermistor parameters 6 Steinhart Hart 1st order B 0 0 7 Steinhart Hart 2nd order 0 0 0 8 Steinhart Hart 3rd order C 0 0 U Up T Top The menu above shows the VibWire 101 configured for using the thermistor Beta value for thermistor temperature value readings Note For lower accuracy temperature readings or when the calibration factors are not known then the thermistor Beta value To and Ro parameters can be assigned VibWire 101 Vibratina Wire Interface User manual From the main menu select Option 5 Diagnostics Single Channel Operation When the VibWire 101 operates as a stand alone device Option 1 Take Single Reading The device scans and reports the sensor values similar to that shown opposite 10 0 Temperature Sensor Configuration The VibWire 108 uses the in built thermistor inside a VW sensor to measure temperature
21. 7D1 7D2 7D3 This command scans MUX 0 and return data values for channels 0 through 15 The returned data values are stored consecutively Starting at cell D and finishing at Cell S 16 cells further into the data table T 7M3 7D0 7D1 7D2 7D3 Scans channels 16 31 on MUX 0 and return the results starting at cell T and finishing at cell AI in the data table similarly commands AJ 7M4 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 0 15 and represents channels 32 47 on a 128 x 2 wire system 7M4 Take 16 measurements using Keynes MUX 1 Channels 32 to 49 AZ 7M5 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 16 31 and represents channels 48 63 on a 128 x 2 wire system 7M5 Take 16 measurements using Keynes MUX 1 Channels 48 to 63 VibWire 101 Vibratina Wire Interface User manual 15 BP 7M6 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 16 31 and represents channels 64 79 on a 128 x 2 wire system 7M6 Take 16 measurements using Keynes Mux 2 no 64 to 79 CF 7M7 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 16 31 and represents channels 80 95 on a 128 x 2 wire system 7M7 Take 16 measurements using Keynes Mux 2 no 80 to 95 CV 7M8 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 16 31 and represents
22. 84 secs where 64 channels 2 x MUX 16 32 in 2 wire mode 32 channel unit VibWire 101 Vibratina Wire Interface User manual 11 14 0 Cleaning amp Maintenance The following procedure should be followed for the care and maintenance of the MUX 16 32 expansion unit Note The MUX 16 82 is not rated for continuous under water operation 1 Remove Power from the system 2 Wash the green sockets with clean fresh water and allow to dry Or dry with a clean cloth Make sure no water remains inside the green sockets 4 Once the unit has dried out simple reconnect the sensors and power and re start acquisition operations 14 1 Environmental Protection The VibWire 101 is a fully encapsulated device making it an safe from the ingress of dust and moisture This device is not rated for continuous under water operations but it is perfectly safe for short term immersion such as occurs in the flooding of tunnels drains or man holes The MUX 16 32 does not depend on separate environmental housing for protection and will still be operating long after more expensive products have corroded away 15 0 Third Party Logger Support The VibWire 101 can be used with any third party logger supporting an SDI 12 port for communications such as the examples shown below The VibWire 101 can be used with these loggers and offers them expansion to for vibrating wire sensors SDI 12 Network CAMPBELL SCIENTIFIC 1 MEASUREMENTS MATTER
23. A single instrument can be deployed upto 1 km from the logger unit SDI 12 network 120 m RS 485 network 1000 m 0 OE D EE SDI 12 network RS 485 network Data Logger Unit PC Data Acquisition SCADA Application AquaLOG Data Logger Any suitable data logger supporting SDI 12 communications can be used VibWire 101 ID 0 VibWire 101 Vibratina Wire Interface User manual 19 18 2 MUX 16 32 16 x 4 Vibrating wire sensor connection The image below shows how to connect the MUX 16 32 expansion unit to the VibWire 101 when operating in 16 x 4 wire mode A vibrating wire sensor typically contains a temperature sensor Ensure that the sensor signals are connected as shown below a ms a ms ms a Sasa The image below shows how to connect a 4 wire a ne mu ae a HONG MIE ESSONNE MERE 12 es ae SSS Thermistor a Out 0 Out 1 D HS ECS Anon ae wo i Ge eee aes eae WLIO ie ae VibWire 101 Interface D VW TEMP si Vibrating Wire Sensor Port MUX Control Port Temperature Input The sensor screen earth connection can be made to any of the ground connection points Frequency Input Rag n The ground earth point are labelled G on the TD MUX 16 32 Gnd Gnd Gnd 18 3 MUX 16 32 32 x 2 Vibrating wire sensor connection The image below shows how to connect the MUX 16 32 expansion unit to the VibWire 101 when operating in 32 x 2 wire mode A vibr
24. D4 aD5 aD6 aD7 Temperature results MUX 0 X units Ttor X 4 Wire MUX 2 MUX 3 z ee ne set De se ne aD3 Frequency results MUX 1 operations UTO EE QC OUTA MUX 0 a a a aD7 Temperature results MUX 1 l BP aM6 aD0O aD1 aD2 aD3 Frequency results MUX 2 Wiring Instructions ania CF aD4 aD5 aD6 aD7 Temperature results MUX 2 sensor Port i Er CV aM8 aDO aD1 aD2 aD3 Frequency results MUX 3 88s DL mperature r 3 Freq n Temp measurements 2 E DL aD4 aD5 aD6 aD7 Temperature results MUX 3 All of the OUT O ports are connected to Frequency input to the VW101 z z Aigo 4he OUT 1 ports are connected to Temperature input to the VW101 MUX 1 Y D aM2 aD0 aD1 aD2 aD3 Frequency results MUX 0 Chan 0 15 OUT 0 mn OUT 1 MUX 2 T aM3 aDO aD1 aD2 aD3 Frequency results MUX 0 Chan 16 31 AJ aM4 aDO aD1 aD2 aD3 Frequency results MUX 1 Chan 0 15 4 x MUX 16 32 units for 32 x 2 wire OUT 0 out MUX 1 AZ aM5 aDO aD1 aD2 aD3 Frequency results MUX 1 Chan 16 31 BP aM6 aDO aD1 aD2 aD3 Frequency results MUX 2 Chan 0 15 CF aM7 aDO aD1 aD2 aD3 Frequency results MUX 2 Chan 16 31 MUX 0 MUX 2 z Cc us oo operations i an out o LIL PIL out a MUX 0 Wiring Instructions CV aM8 aDO aD1 aD2 aD3 Frequency results MUX 3 Chan 0 15 DL aM9 aDO aD1 aD2 aD3 Frequency results
25. Hart 1st order B 0 0 6 Cal D 2 3069E33 7 Steinhart Hart 2nd order 0 0 0 U Up T Top 8 Steinhart Hart 3rd order C 0 0 U Up T Top 1 lectin MUX 16 32 Channel and makin m remen ele 9 Selecting a MUX 16 32 Channel and making a test measurement MUX ID 2 MUX ID 2 Example Channel 0 15 Channel 16 31 Select channel 3 on MUX ID 2 and make a test measurement 9 1 Storing New Settings From the main menu select Option 5 Diagnostics From the Diagnostics Menu Select Option 3 Set MUX and read The following text will be displayed Enter Mux code ann a is the mux number and nn is the setting where setting is the channel number 0 31 or 0 15 Enter 203 The specified MUX 16 32 interface will switch to channel 3 and take a measurement Upon completing the new configuration settings simply press select the Config button again and the menu system will close All new settings are now stored into the device VibWire 101 Vibratina Wire Interface User manual 8 9 2 Diagnostics The menu system of the VibWire 101 enables the device to make an individual measurements upon demand An individual measurement can be made 1 Single channel unit 2 Any specified channel on a MUX 16 32 expansion unit Diagnostics 1 Take single reading 2 Set Mux 3 Set mux and read 4 Set DAC at frequency U Up T Top Reading sensor Sensor Results oe ast aah aat 77 ae nat
26. I12 and VibWire 108 RS485 support a terminal menu system to enable the instrument to be configured Refer to page 22 for details of connecting the instrument to a Terminal Emulator program running on a PC IEE kif Hypertermina SoS File Edit View Call Transfer Help De S6 06 This is the Main Menu that appears on Starting the menu system Main Menu 1 System Maintanence 2 Thermistor type 1 3 Thermistor type 2 I E Pluck Control 6 Channel 0 Quick Menu Guide 8 Channel 2 a Channel amp 8 channel 5 1 Option 4 Diagnostics use menu system available here to D Channel 7 U Up T Top start a instrument scan on demand and observe data 5 Option 5 Pluck Control restricts sensor ping frequency Used when poor quality sensors with 3rd harmonic n aae oscillations are encountered Fig 38 Main Menu 30 0 Pluck Control The pluck control system built into the VibWire 101 is a useful feature to activate upon observing unusual spikes in what should be steady state data values for sensors that change little over time 30 1 Spikes in the VW Sensor Data Depending on how well a vibrating wire sensor is made the sensor coil could become damaged or if the sensor extreme physi cal shock once it is deployed Damage to the sensor often means the coil seating has been damaged an the sensor can oscil late at a different harmonic than the designed fundamental frequency In order to obtain the co
27. IBBE Beheletet sf pe pede Ghee tate IOD a LIL Bein EE QE PE SE EU ES LE D r 4 Ta A re _ Channel 17 Channel 18 Chan 0 n s Output ons Main Earth Post Chan 1 Channel Output Display Connection to a Campbell Scientific Clone MUX Expansion Unit ma COL OUL MUX Control Port Encardio MUX VW 101 4 1 mm Mounting hole MUX Control Port The image opposite shows the pin outs for the MUX 16 32 expansion unit for any system manufactured after 18th August 2010 Refer to the Pin outs on the labels for exact circuit connection Campbell Scientific MUX The diagram above shows how to connect a Campbell Scientific Clone multiplexer expansion VibWire 101 Vibratina Wire Interface User manual 26 MUX 16 32 Expansion Unit SDI 12 Command Summary The following commands are included to help with configuration of the VibWire 101 when operating with the MUX 16 32 or Campbell Scientific multiplexer expansion unit The following commands are for SDI 12 network operations only Changing the MUX 16 32 ID Number using AquaLOG Use the AquaLOG data logger in transparent mode to issue SDI 12 commands to the MUX 16 32 Connect the AquaLOG to the PC Use a RS232 cross over connector to connect the serial port on the AquaLOG unit to a port on a laptop PC or USB RS232 converter as shown below Using the AquaLOG menu system select Main Menu Diagnostics option 9 gt SDI 12 Transparent Mode option 8 At the
28. MUX 3 Chan 16 31 sensor Port Frequency measurements only All of the MUX output ports for MUX 0 to MUX 3 oO O 6 5 ee DBA Ss Ss are all connected to the Frequency input on the VW 101 Fig 63 OUT 0 L Co ouT 1 MUX 3 Logger SDI 12 Commands Description D aM2 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 0 15 MUX 1 OUT 0 TE OUT 1 MUX 2 T aM3 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 16 31 AJ aM4 aD4 aD5 aD6 aD7 Temperature results MUX 1 Chan 0 15 r OUT 0 z MUX 1 AZ aM5 aD4 aD5 aD6 aD7 Temperature results MUX 1 Chan 16 31 4 x MUX 16 32 units for 32 x 2 wire E E I 2 7 BP aM6 aD4 aD5 aD6 aD7 Temperature results MUX 2 Chan 0 15 OUT 0 OUT 1 MUX 0 CF aM7 aD4 aD5 aD6 aD7 Temperature results MUX 2 Chan 16 31 CV aM8 aD4 aD5 aD6 aD7 Temperature results MUX 3 Chan 0 15 DL aM9 aD4 aD5 aD6 aD7 Temperature results MUX 3 Chan 16 31 MUX 0 MUX 2 MUX 3 temperature sensor operations Wiring Instructions sensor Pr OOOO Temperature measurements only Therm Therm All of the MUX output ports for MUX 0 to MUX 3 e Temp input on the VW 101 Description Logger SDI 12 Commands D aM2 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 0 15 T aM3 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 16 31 4 x MUX 16 32 units for AJ aM4 aD4 aD5 aD6 aD7 Te
29. VibWire 101 Single Channel Vibrating Wire Sensor Interface User Guide amp Installation Manual Version 1 06 Last updated June 2015 WIRE 101 RS232 HIGH SPEED INTERFACE OW RN ap ES DI 12 Data Pe Contact Keynes Controls Ltd sales keynes controls com VibWire 101 Vibratina Wire Interface User manual WARRANTY Keynes Controls Ltd warrants its products to be free of defects in materials and workmanship under normal use and service for a period of 12 months from the date of purchase If the unit should malfunction it must be returned to Keynes Controls for evaluation freight prepaid Upon examination by Keynes Controls Ltd if the unit is found to be defective it will be repaired or replaced at no charge However the WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misuse outside of the companies control Components which wear or become damaged by misuse are not warranted This includes batteries fuses and connectors Introduction The VibWire 101 is the basic vibrating wire sensor interface interface manufactured by Keynes Controls Ltd This User manual is for firmware version 1 3 created after Aug 2011 The VibWire 101 supports both static and dynamic measurement operations It is possible to switch the VibWire 101 from slow to fast sampling under software co
30. al 23 24 0 Changing the MUX ID Using Q Log When using multiple MUX 16 32 units with the VibWire 101 to create large channel count systems then each MUX 16 32 unit must have its own unique ID number set for it to be identified on the MUX control signal network There are full details in the MUX 16 32 User guide and a summary of these instructions is shown below Q Log is the free applications software avail to download from the http www aquabat net web site The image below demonstrates how to change the MUX 16 32 ID number using the Q Log applications software The example demonstrates how to change the MUX 16 32 from ID 1 to ID 2 MUX 16 32 ID string 5 5 QLog Recorder QLog View Edit Help Once Q LOG is up and running Device List Variable List Formulas Alarm Levels List of devices P Only change the address using a single device on the SDI 12 network at any AA Setup Conf one time This avoids any confusion over which unit is being configured it 1 Connect the MUX 16 32 to the SDI 12 network as shown in drawing below 2 Scan for devices p p The LED status indicators will flash 3 select Change Address option VLogging N Stopped at 16 00 47 The example above shows a MUX 16 32 unit The Change Device Address Window will appear with ID 1 identified in the Q LOG device list upon completion of the Scan for device operation r 2
31. ating wire sensor typically contains a temperature sensor Ensure that the sensor signals are connected as shown below PL LE LJ POL LE d Eo l ooo 16 17 18 19 20 21 23 2 Wire Sensor Connection gt ae ery a Che D EDS CO OOOO COL tt eee p000 WW TEMP VibWire 101 Interface at D The image below shows how to Mle sali PERSON connect a 2 wire vibrating wire sensor to the MUX 16 32 VibWire 101 Vibratina Wire Interface User manual 20 18 4 VibWire 101 working with the MUX 16 32 4 Wire Mode For 4 wire vibrating wire operation connect the sensors to the MUX 16 32 expansion units as shown on page 11 The following commands are required to acquire data using the AquaLOG data logger using the VibWire 101 to scan the MUX 16 32 expansion units In this example the VibWire 101 has an SDI 12 ID 5 The SDI 12 commands shown are extensions to the standard command set and are used by the AquaLOG logger to acquire and store results for a 64 x 4 wire system using 4 x MUX 16 32 expansion units D 5M2 5D0 5D1 5D2 5D3 Channels 0 15 Mux 0 Frequency Hz TI 5D4 5D5 5D6 5D7 Channels 0 15 Mux 0 Temp AJ 5M4 5D0 5D1 5D2 5D3 Channels 16 31 Mux 1 Frequency Hz AZ 5D0 5D1 5D2 5D3 Channels 16 31 Mux 1 Temp BP 5M6 5D0 5D1 5D2 5D3 Channels 32 47 Mux 2 Frequency Hz CF 5D0 5D1 5D2 5Ds3 Channels 32 47 Mux 2 Temp CV 5M8 5D0 5D1 5D2 5D3 Channels 48
32. cardio rite Electronics Pvt Ltd A 7 Industrial Estate Talkatora Road Lucknow UP 226011 India E mail geotech encardio com lko encardio com Website www encardio com Tel 91 522 2661039 40 41 42 Fax 91 522 2662403 TEST CERTIFICATE DWT Traceable to standard no J082301 T8F 281 TC Customer P O No Instrument V W Piezometer Date 02 02 2012 Serial number XXXXX Temperature 19 C Capacity 350 kPa Atm Pressure 100 kPa Input Observed value Average End Point Poly pressure Up1 Down Up2 Fit Fit kPa Digit Digit Digit Digit kPa kPa 0 0 6555 9 6556 9 6556 9 6556 4 0 0 0 3 70 0 6312 4 6312 6 6312 4 6312 4 69 3 69 5 140 0 6064 0 6064 3 6063 1 6063 5 139 9 140 1 210 0 5817 1 5818 4 5816 2 5816 7 210 0 210 1 280 0 5569 8 990 7 5568 0 5568 9 280 3 280 3 350 0 0923 3 9320 0 0323 1 0929 92 350 0 349 8 Digit f 7 1000 Linear gage factor G 2 8388E 01 kPa digit Use gage factor with minus sign with our read out unit Model EDI 51V Thermal factor K 0 087 kPa C Polynomial constants B 2 8085E 01 C 1 8512E 03 Pressure P is calculated with the following equation Linear P kPa G RO R1 K T1 T0 S1 S0 Polynomial P kPa A R1 B R1 C K T1 T0 S1 S0 R1 current reading amp RO is initial reading in digit S1 and T1 current atmospheric pressure kPa and temperature C Readings at the time of shipment Date f Hz The terms K T1 T0 are the temperature f2 Digit compensation terms for this sensor Tempera
33. channels 96 111 on a 128 x 2 wire system 7M8 Take 16 measurements using Keynes Mux 8 no 96 to 111 DL 7M9 7D0 7D1 7D2 7D3 starts measurements and retrieves data from MUX 1 channels 16 31 and represents channels 112 127 on a 128 x 2 wire system 7M9 Take 16 measurements using Keynes Mux 3 no 112 to 127 17 3 Command Summary The commands shown below are used by the AquaLOG SDI 12 data logger to acquire data from 128 x 2 wire channels using 4 x MUX 16 32 units connected to a VibWire 101 interface using SDI 12 ID 7 To operate in 128 channel mode 4 x MUX 16 32 units are required with ID numbers set 0 3 D 7M2 7D0 7D1 7D2 7D3 Channels 0 15 Mux 0 T 7M3 7DO 7D1 7D2 7D3 Channels 16 31 Mux 0 AJ 7M4 7D0 7D1 7D2 7D3 Channels 32 47 Mux 0 AZ 7M5 7D0 7D1 7D2 7D3 Channels 48 63 Mux 0 BP 7M6 7D0 7D1 7D2 7D3 Channels 64 79 Mux 0 CF 7M7 7D0 7D1 7D2 7D3 Channels 80 95 Mux 0 CV 7M8 7D0 7D1 7D2 7D3 Channels 96 111 Mux 0 DL 7M9 7D0 7D1 7D2 7D3 Channels 112 127 Mux 0 Explanation where 2 represents the instruction to scan channels 0 15 on MUX 0 similarly 3 represents the instruction to scan channels 16 31 on MUX 0 D 7M2 7D0 7D1 7D2 7D3 Start Cell 4 x data values 4 x data values 4 x data values 4 x data values for data Chan 0 3 Chan 4 7 Chan 8 11 Chan 12 15 2 wire mode storage Note MUX 16 32 ID numbers are 0
34. e access or USB Flash memory recording solutions VibWire 101 ID 2 Vibrating Wire Sensors VW Strain Gauge Single Channel VibWire 101 High Speed The image opposite shows the single channel VibWire 101 interface connected to a local LAN The continuous ping option on this instrument enables higher Virtual Comm Port speed sampling from vibrating wire sensors above what is data recording software available from a multiplexed solution Maximum Single Channel Sample Rate 20 Hz Data is accessed via a virtual comm port by any software that supports serial port data operations 28 0 PC Data Recording Solution Choice of SDI 12 or RS 485 media converter SDI 12 network Data Logger SCADA Application RS 485 network Expansion Port 32 x 4 Wire VW Sensor Inputs VibWire 101 VibWire 101 Vibratina Wire Interface User manual VibWire 101 16 x 4 Wire VW Sensor Inputs 28 16 x 4 Wire VW Sensor Inputs ada VibWire 101 The image opposite shows a basic instrument solution consisting of 4 sensors All of the devices are intelligent and report values directly in engineering units The USB media converter interfaces the sensor digital network directly to the PC The use of a PC enables large number of sensors to be recorded Expansion of the network is as easy as installing a new media converter on to a USB port 29 0 Main Menu Terminal Port Models VibWire 108 SD
35. e figures as a guide only 250 ms 3 seconds per channel depending on the VW sensor being used MUX 16 32 Expansion unit 20 Readings Sec 50 milli Sec to 40 Readings Sec 25 milli Sec depending on sensor 0 100m 0 1 km Supports enhanced addressingO 9 A Z L 260 W 127 D 38 Plastic with epoxy encapsulation waterproofing SDI 12 1200 Baud 7 bit N stop bit Even Parity other speeds on request CE conformity according to EN 61000 6 400 g 9 Way Male 9600 Baud 8 data No Parity 1 stop bit No Flow control DTE 1200 Baud 7 bit N stop bit Even Parity other speeds on request 1200 Baud 7 data bit N stop bit even parity The VibWire 101 is shipped by default using the following factory set configuration operations SDI 12 RS 485 ID 0 OXMJ 1 number jogs 1 Jogs 1 Default MUX 16 32 when using the VibWire 101 and MUX 16 32 expansion unit Jogs 2 Used for some Campbell Scientific MUX expansion units 5 0 Testing The VibWire 101 Quick Guide Connect the VibWire 101 to the SDI 12 port of a suitable Logger 2 Fit a single Vibrating Wire Sensor to the sensor input port of the VW101 ideally making sure the default operating frequency for the chosen sensor is already known 3 Issue the SDI 12 command start measurement ODO get sample data The instrument returns the sensor operating frequency temp if the sensor is installed VibWire 101 Vibratina Wire Interface User manual 5 6 0 Data
36. em Any Windows shown may vary between the different versions of the operating system For up to date details refer to Microsoft manuals Using the Microsoft PC operating systems 1 Start Settings Control Panel 2 Select Systems option A Window similar to that shown opposite will appear Select the Hardware Tab System Properties System Restore Automatic Updates Remote General Computer Name Hardware Advanced Device Manager The Device Manager lists all the hardware devices installed on your computer Use the Device Manager to change the properties of any device Device Sa Drivers Driver Signing lets you make sure that installed drivers are compatible with Windows Windows Update lets you set up how Windows connects to Windows Update for drivers Hardware Profiles cm Hardware profiles provide a way for you to set up and store zi different hardware configurations Hardware Profiles O Device Manager File Action View Help a p Computer See Disk drives a Display adapters 4 DYDICD ROM drives Floppy disk controllers H Floppy disk drives IDE ATAJATAPT controllers 4 Imaging devices x Keyboards Sy Mice and other pointing devices 2 Monitors HE BS Network adapters EE ATM Emulated LAN 2 unspecified ELAN name gt EM ATM Emulated LAN unspecified ELAN name gt E8 Realtek RATL amp OZ AS PCI Ethernet Adapter Hg 515 900 PCI Fast Ethernet Adapter H Ports
37. ensor operations using the first 32 x cells in the data table Wiring Instructions Temperature measurements only The first useable cell in any data table is D All of the MUX output ports on MUX 0 are both connected to the Temp input on the VW 101 Description i i ire p Vibrating Wire Frequency Logger SD Commands MUX 0 Connect the MUX 1 6 32 unit expansion D aM2 aDO aD1 aD2 aD3 Frequency results MUX 0 Chan 0 15 T aM3 aDO aD2 aD3 aD3 Frequency results MUX 0 Chan 16 31 1 x MUX 16 32 unit for unit output ports to the VibWire 101 unit i asshbwhlbklowt OO out 1 MUX 0 The following logger commands create a data table E 32 x 2 wire VW sensor frequency using the first 32 x cells in the data table sig Be The first useable cell in any data table is D VW Sensor Coil VW Sensor Coil The following examples show for to use the MUX 16 32 units configured for 32 x 2 wire operations za zt Logger SDI 12 Commands Description OUT 0 oe L ou t 1 MUX 1 D aM2 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 0 15 T aM3 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 16 31 E IL OUT 0 Nm Hu OUT MUX 0 AJ aM4 aD4 aD5 aD6 aD7 Temperature results MUX 1 Chan 0 15 2 y MUX 1 6 32 unit for 39 7 2 wire AZ aM5 aD4 aD5 aD6 aD7 Temperature results MUX 1 Chan 16 31 MUX 1 sensor Port JL L L L temperature senso
38. er models such as DT 51 82E It is possible to add vibrating wire sensor support to these products even if the original manufacturer does not support it VibWire 101 Vibratina Wire Interface User manual 10 12 0 How do I adjust the manufacture set SDI 12 ID number The manufactures default SDI 12 ID 0 Use the command xAy where x 0 and y new address therefore OA5 changes the default ID 0 to ID 5 12 1 How do I know the SDI 12 ID of the MUX 16 32 units The default ID number for a single MUX 16 32 unit is 0 This can only be changed with the MUX 16 32 directly connected to a device control ling the SDI 12 network such as the AquaLOG data logger or by a PC when using a SDI 12 media converter 1 Connect the MUX 16 32 to the Logger using the MUX CTRL Port for the SDI 12 communication See details on page 11 for pin outs Make sure only a single MUX 16 32 device is connected to the AquaLOG or PC when reconfiguring the expansion unit as this simpli fies the operation Using a terminal program or the AquaLOG menu system using the SDI 12 Transparent Mode option Issue the command do not press carriage return as the instrument responds automatically The MUX 16 32 returns the ID number 0 10 FULL DETAILS REFER TO THE MUX 16 32 USER MANUAL 12 2 Which terminal emulator software shall use Any terminal emulator software supporting VT100 terminal can be used for communications The recommended software is toten
39. et below shows the temperature to be 7 Deg C ThermistorWorksheet xls Screen image Calculation of temperature based on voltage ratio Voltage ratio 0 663 Input Excitation Ohm 3300 Fixed Thermistor resistance 6905 Calculated Thermistor RO 3000 Thermistor property A Thermistor property B 2 37E 04 Thermistor property C 1 02E 07 Thermistor property 3 57E 03 Inv Temperature Temperature Celsius Calculated value oo Temperature Steinhart Hart Calibration value Parameters obtained from calibration data sheet VibWire 101 Vibratina Wire Interface User manual 31 Thermistor Temperature Calculation using the thermistor Beta Value APPENUIK A An NTC Negative Temperature Coefficient Thermistor is a passive electrical component whose resistance varies inversely with temperature It is often used as a temperature sensor inside vibrating wire sensors The relationship between resistance and temperature can be described with the beta formula The VibWire 101 range of sensor interfaces offers the beta value temperature calculation as an option within the thermistor set up The Beta value thermistor calculation is a simplified version of the Steinhart Hart equation that is most often used in temper ature measurement solutions For applications when the Steinhart Hart calibration factors are not known then the sensor Beta value can often be found on the thermistor manufactures data sheet The example bel
40. ew value SDI 12 power is on gt Enter SDI 12 Command Example 0A8 8 Change address from default to ID 8 8M 80042 Start measurement on single channel VibWire 101 8D0 8 1201 37 37 56 Refer to the AquaLOG User manual for full instructions for operating the data logger Download full details from the http www aquabat net web site VibWire 101 Vibratina Wire Interface User manual 34 Data Recording Options The images below show connect the VibWire 101 to the AquaLOG data logger and how to create PC based vibrating wire data acquisition systems Connect AquaLOG to a PC The VibWire 101 connects to the AquaLOG as shown below Simply connect the SDI 12 bus of the logger to the SDI 12 bus on the VibWire 101 To activate the SDI 12 bus simply set the logger into Null modem cable Transparent mode using the terminal port menu system p A of the logger USB RS232 SDI 12 Network Additional instruments Converter ne a ll do te T Supply Stores 1 250 sensor inputs 250 Inputs x 8K Records 64 Inputs x 32K Records Part No AquaLOG Part No VibWire 101 SDI12 Connecting the VibWire 101 to a PC The VibWire 101 connects to any PC using a USB media converter The USB media converter is used to send commands across the SDI 12 RS 485 network Q Log Software SDI 12 Network E Part No USB SDI12 Pro Part No VibWire 101 SDI12 The VibWire 101 can be directly connected to a PC using a USB
41. ig 58 PP EEE SAP SO NN CARS a Common Single Earth Common earth connection between panels Termination Point tee ne Rite See together in order to avoid noise problems Noise caused by current loops are often introduced in field applications via network cabling or via the sensor cabling when a device is located onto a structure which is at a different local potential than This effect can cause erratic readings on sensors When only small distances between separate instrument panels are involved then a good quality Earth connection should should link the individual metal instrument mounting panels together See Fig 58 above A good quality Earth connection free of any corrosion is required Only a single connection is to be made to the main systems Earth This is best taken from the instrument panel closest to the main earth point 47 Distributed Systems Earth Connections Isolated RS 485 network 0 1 Km Isolated RS 485 network 0 1 Km Menak Network Isolator Module Module Local Instrumentation Network Isolator Isolator Local Instrumentation Local Instrumentation metal mounting panel gp metal mounting panel metal mounting panel Local Earth Local Earth Local Earth Fig 59 instrumentation VibWire 101 Vibratina Wire Interface User manual In applications where multiple instrument systems are deployed onto a
42. k The output ports labelled Out 0 and Out 1 are correctly wired for 2 or 4 wire operation See Page 11 for the correct wiring details Check The correct output signal is wired to the MUX 16 32 The cables on a vibrating wire sensor are colour coded Verify with the manufactures data sheet that the correct output signals are being used Check MUX 16 32 units are scanning and the correct input channel has been identified ALWAYS USE THE PIN OUTS SHOWN ON THE INSTRUMENTS FOR THE CORRECT WIRING GUIDE AS THE DOCUMENTATION MAY CHANGE WITHOUT NOTICE Only 16 Channels out of 32 are scanning 1 If the VibWire 101 is only scanning 16 out of 32 channels then this is because MUX 16 32 has been set into 4 wire mode Check Number of Jogs control pulses for the MUX 16 32 is correct Use SDI 12 Command aXJn where a SDI 12 ID of the VibWire 101 n 1 for MUX 16 32 factory default n 2 for DHTech Some Campbell Scientific Clones Example 4XJ1 sets Jogs 1 for VibWire 101 with ID 4 driving MUX 16 32 units Can use multiple VibWire 101 instruments on a network Further VibWire 101 instruments can be used on an SDI 12 network by simply using another SDI 12 ID number for any additional instruments Each VibWire 101 can be individually configured for operation Can use the VibWire 101 on any third party logger units Any data logger supporting SDI 12 network can use the VibWire 101 such as the Campbell Scientific CR200 or any DataTak
43. mperature range Temperature resolution Temperature accuracy Thermistor measurement Thermistor excitation Input resistance Units Vibration Temperature Electrical Data Voltage supply Current compensation SDI 12 Option only Idle mode Active measurement Measuring time Warm up Response High Speed VW Results via RS 232 Port Length of data lines SDI 12 RS 485 SDI 12 Address mode General Data Dimensions mm Material SDI 12 Digital Port CE Conformity Weight Communications Terminal Port SDI 12 Digital Port RS 485 Network Settings 4 0 Default Factory Settings 1 x 4 Wire VW Input standard 128x2 Wire VW Inputs 64 x 4 Wire VW Inputs to 2 K Ohm standard other ranges on request 0 10 Km depending on cabling Auto resonance 400 6 KHz standard Other ranges on request 32 bit resolution 0 001 Hz 0 05 FS max Per year 50 to 70 Deg C 0 1 C 0 2 Deg Thermistor 10K Ohm standard 3 3 K Ohm on request 0 2 C 0 2 F SDI 12 RS 485 A half bridge ratio metric measurement Value returned in mV Is used for temperature compen sation on VW measurements 2 5 V DC 50 ppm Deg C 10K Ohm 0 1 Completion resistor Standard 3 3 K Ohm on request Freq Hz Digits Hz2 SI Units Quadratic expansion Temperature Deg C mV Raw SDI 12 RS 485 bus 10 5 to 16V DC Typical values are 12 V DC Excitation 1 2mA typical 8 mA Sensor Scan These values may change slightly between sensors Us
44. mperature results MUX 1 Chan 0 15 MUX 2 MUX 3 AZ aM5 aD4 aD5 aD6 aD7 Temperature results MUX 1 Chan 16 31 BP aM6 aD0 aD1 aD2 aD3 Frequency results MUX 2 Chan 0 15 Temperature sensors Vibrating Wire Frequency CF aM7 aDO aD1 aD2 aD3 Frequency results MUX 2 Chan 16 31 4 x 2 wire Thermistor Tempi MUX 0 MUX 1 L d CV aM8 aDO aD1 aD2 aD3 Frequency results MUX 3 Chan 0 15 Connect the MUX 16 32 urt expansion onnect the MUX 16 32 unit expansion DE Mel bol oil bal apa Cena eden ate 4 x 2 wire VW sensor frequency MUX 2 MUX 3 unit output ports to the VA TE LS unit unit output ports to the VibWire 101 unit outro LI ouT 1 MUX 0 OUT 0 OUT 1 MUX 2 aen fa ae TT ours MUX M cure ours MUX 3 aS an fan LL VW 101 VW 101 HOO sensor Port sensor Port Therm Therm 5 O 5 a o 2 gt VW Sensor Coil VibWire 101 Vibratina Wire Interface User manual 36 49 The following examples show for to use of a single MUX 16 32 unit configured for 32 x 2 wire operations Logger SDI 12 Commands ae Description out o OI CO0 oum MUX 0 bt D aM2 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 0 15 MUX 0 PREP T aM3 aD4 aD5 aD6 aD7 Temperature results MUX 0 Chan 16 31 sensor Pon Uuu 1 x MUX 16 32 units for 32 x 2 wire The following logger commands create a data table Therm Therm Fig 65 temperature s
45. n 0 15 returns 32 values aDO aD1 aD2 aD3 aD4 aD5 aD6 aD7 Chan 0 15 16 x Freq 16 x Temp aM4 MUX 1 Chan 16 31 returns 32 values aDO aD1 aD2 aD3 aD4 aD5 aD6 aD7 Chan 0 15 16 x Freq 16 x Temp To VW frequency ort on the VW101 aM6 MUX 2 Chan 32 47 returns 32 values aDO aD1 aD2 aD3 aD4 aD5 aD6 aD7 p To temperature Chan 0 15 16 x Freq 16 x Temp pPAre ON EE ne ier aM8 MUX 3 Chan 48 63 returns 32 values aDO aD1 aD2 aD3 aD4 aD5 aD6 aD7 Chan 0 15 16 x Freq 16 x Temp Get data aDO aD1 aD2 aD3 aD4 aD5 aD6 aD7 eee a eee where each command aD0O returns 4 values 16 x Freq Readings 16 x Temperature Readings 14 1 Sequence of commands to read data values The order in which the MUX 16 82 units are scanned is purely based on the order the measurement instructions are issued to VibWire 101 Only a single measurement command is required to scan all 16 channels in 4 Wire mode i Ch d with Port OUT 0 F The order in which the commands are to be used are APE OPA mura Frequency 7D0 Chan 0 Chan 1 Chan 2 Chan 3 7D1 Chan 4 Chan 5 Chan 6 Chan 7 1 Start measurement command Scan Chans 0 15 in 4 Wire mode 7D2 Chan Chan9 Chan 10 Chan 11 i 7D3 Chan 12 Chan 13 Chan 14 Chan 15 2 Read 32 sensor values into a data table an an an an Channels used with Port Out 1 Temperature repeat the operation for each MUX 16 32 unit to be scanned 7D4 Temp 0 Temp 1 Temp 2 Temp 3 7D5 Temp 4 Temp 5
46. n a stream of steady state data values will appear to the User 3rd Harmonic Spike The spikes in the data are often caused by faulty seating of the sensor coil Frequency Hz Steady State Values oO The Pluck Control option will remove the false peaks caused by sensor oscillation away from the fundamental operating fre Fig 39 Spike in data quency Low Frequency Centre Frequency High Frequency The pluck control range Range 12x Centre Freq Centre Freq 2 x Centre Freq Therefore with Centre Freq 1000 Hz C F LowE Mid F Maye Low Frequency Centre Frequency High Frequency entre Frequency ow Frequency id Frequency ax Frequency PI 1 uck Range 2x 1000 1000 2 x 1000 800 400 800 1600 900 450 900 1800 500 Hz to 2 K Hz with 1 K Hz centre frequency 1000 500 1000 2000 1200 600 1200 2400 VibWire 101 Vibratina Wire Interface User manual 29 Updated 11 12 2013 VibWire 108 101 Appendix A Temperature Measurement Using the Steinhart Hart Equation for temperature calculation Introduction The following technical note shows how to obtain the thermistor resistance values for a vibrating wire temperature sensor connected to the temperature input of the VibWire 101 or VibWire 108 interfaces The VibWire 108 101 vibrating wire sensor interface supports the 4 wire sensor interface Due to the wide range of temperature sensors used in vibrating wire sensors it is not possible to pre define the tem
47. network and that the instrument cabinets are deployed some distance apart typically ona Moat RS 485 network then a common earth connection is no possible or practical In this case a local earth has to be made to the instrument cabinet All of the MUX 16 32 units connected to the Earth as shown in Fig 56 page 30 A single local earth should be used within the cabinet to fasten to the local system Earth The NP_Isolator modules should be used to isolate the network cabling from the 39 Table of Contents Introduction WARRANTY Optional parts that can be used with the VibWire 101 2 0 MUX CTRL 1 0 PC Laptop Data Recording amp Display System 5 0 Testing The VibWire 101 Quick Guide 3 0 Technical Specifications 4 0 Default Factory Settings 7 0 MUX 16 32 Expansion Unit 6 0 Data Type Selection 9 0 Menu System 9 1 Selecting a MUX 16 32 Channel and making a test measurement 9 2 Diagnostics 11 0 Common Problems 12 4 Selecting 2 or 4 Wire mode 12 0 How do I adjust the manufacture set SDI 12 ID number 14 0 Cleaning amp Maintenance 14 1 Environmental Protection 15 0 Third Party Logger Support 16 0 VW 101 SDI 12 Commands 16 1 VW 101 RS 485 Commands 17 0 VibWire 101 SDI 12 Programming Examples Query SDI 12 Address Change the SDI 12 ID number 17 2 MUX 16 32 Channel Expansion SDI 12 Commands 17 3 Command Summary 18 0 Wire Mode Data Structure 18 1 Multi instrument SDI 12 RS 485 Digital Network Operations 18 2 MUX 16 32 16 x 4 Vib
48. ngs ADO Freq Chan 0 Hz Freq Chan 1 Hz Freq Chan 2 Hz Freq Chan 3 Hz AD1 Freq Chan 4 Hz Freq Chan 5 Hz Freq Chan 6 Hz Freq Chan 7 Hz AD2 Freq Chan 8 Hz Freq Chan 9 Hz Freq Chan 10 Hz Freq Chan11 Hz AD3 Freq Chan 12 Hz Freq Chan 13 Hz Freq Chan 14 Hz Freq Chan 15 Hz AD4 Temp Chan 16 Temp Chan 17 Temp Chan 18 Hz Freq Chan 19 Hz AD5 Freq Chan 20 Hz Freq Chan 21 Hz Freq Chan 22 Hz Freq Chan 23 Hz AD6 Freq Chan 24 Hz Freq Chan 25 Hz Freq Chan 26 Hz Freq Chan 27 Hz AD7 Freq Chan 28 Hz Freq Chan 29 Hz Freq Chan 30 Hz Freq Chan 31 Hz There is no restriction on what type of signal is switched as the MUX 16 32 can be used for a wide range of applications To keep the example simple only frequency signal inputs from the vibrating wire sensors is being considered 18 1 Multi instrument SDI 12 RS 485 Digital Network Operations Multiple VibWire 101 instruments can be deployed on both of the SDI 12 and RS 485 digital networks On most SDI 12 data loggers only 10 x VibWire 101 units can be deployed on a single SDI 12 network The sensors themselves support advanced addressing and so enable ID numbers in the range 0 9 a z Up to 36 sensors can be connected on a single network string A single AquaLOG supports up to 36 x VibWire 101 units or 240 sensors distributed between each interface The RS 485 network is used when there is a relatively long distance between the VW 101 and the data logger
49. nt as a guide only SDI 12 Data Frequency Signal Hz Temperature Signal mV Sensor Input AquaLOG SDI 12 Logger Unit VibWire 101 Sensor Interface VibWire 101 Vibratina Wire Interface User manual 6 8 0 Terminal Port Terminal Type VT100 19 USB RS232 Converter P Device Manager SE File Action View Help I ARR ER m amp 4 JANOS 14 Computer Disk drives B Display adapters 3 DVD CD ROM drives QA Human Interface Devices ca IDE ATA ATAPI controllers IEEE 1394 Bus host controllers Imaging devices amp Keyboards A Mice and other pointing devices Bi Monitors Network adapters 4 Hi Portable Devices Ei WPD FileSystem Volume Driver a F Ports COM amp LPT 1 Communications Port COM1 gt Printer Port LPT1 Dp Processors amp Sound video and game controllers JE System devices Universal Serial Bus controllers Microsoft Windows 7 Device Manager Window Terminal Port Operation The terminal port built into the VibWire 101 enables the instrument to be easily configured using the built in menu system to set all the calibration parameters Terminal Port Null modem cable 9 Pin DTE The VibWire 101 can be configured using the instrument terminal port The following instructions are for the Microsoft Windows Operating system Step 1 Connect the PC Laptop to the VibWire 101 using the USB RS232 interface and null modem cable as shown above The te
50. ntrol The instrument supports options for SDI 12 or RS 485 digital networks The VibWire 101 is a fully encapsulated device supporting a single digital network port for communication to a suitable logger device such as the AquaLOG device The VibWire 101 is a fully encapsulated device making it immersion and dust ingress proof The VibWire 101 will even work submerged for short lengths of time and will still be operating when most other devices have failed The VibWire 101 is a single channel stand alone device and can be expanded using the MUX 16 32 multiplexer units to create systems with up to 128 inputs The operating frequency range for the vibrating wire frequency input is 400 6 K Hz and supports most manufactures range of sensors The VibWire 101 supports 4 wire operation and reads the temperature sensor values for resistive sensors ranging from 120 to 5 K Ohm Dynamic Measurements The VibWire 101 can be configured for single channel high speed measurements and it is this feature that enables the device to be used for dynamic measurement operations Prior Knowledge This manual requires the user to have some prior knowledge of SDI 12 commands and suitable data loggers Worked examples consider the use of the AquaLOG Communication and Data Recording Interface only Optional parts that can be used with the VibWire 101 All of the USB Pro model media converters can power directly the VibWire 108 interfaces and 3rd party sensors An e
51. o 15 aM9 Take 16 measurements using Keynes MUX ID 3 no 16 to 31 aDO Output frequencies 0 to 3 aD1 Output frequencies 4 to 7 aD2 Output frequencies 8 to 11 aD3 Output frequencies 12 to 15 aD4 Output Temperature Values 0 to 3 aD5 Output Temperature Values 4 to 7 aD6 Output Temperature Values 8 to 11 aD7 Output Temperature Values 12 to 15 16 1 VW 101 RS 485 Commands The RS 485 commands are the same as SDI 12 commands except they are preceded with a symbol xAy Change of address x to y MUX Control aXMJ n 1 or 2 Sets number of jogs pulses for each increment on the C aMpbell Scientific 16 x 4 MUX aXMS_ n 0 or 1 Sets single or dual input on the MUX 16 32 aM Take single measurement aM0 Take 16 measurements using Campbell multiplexer no 1 to 16 aMi Take 16 measurements using Campbell multiplexer no 17 to 32 aM2 Take 16 measurements using Keynes MUX ID 0 no 0 to 15 aM3 Take 16 measurements using Keynes Mux 0 no 16 to 31 aM4 Take 16 measurements using Keynes MUX ID 0 no 0 to 15 aM5 Take 16 measurements using Keynes Mux 1 no 48 to 63 aM6 Take 16 measurements using Keynes MUX ID 0 no 0 to 15 aM7 Take 16 measurements using Keynes Mux 2 no 80 to 95 aM8 Take 16 measurements using Keynes MUX ID 0 no 0 to 15 aM9 Take 16 measurements using Keynes Mux 3 no 112 to 127 aD0 Output frequencies 0 to 3 aD1 Output frequencies 4 to 7 aD2 Output frequencies 8 to 11
52. ow demonstrates how the VibWire 108 calculates temperature The temperature calculations are undertaken internally within the VibWire 101 and are not yet currently part of the Q Log software T 2 where T temp in units K Kelvin 7 Re 0 B Thermistor Beta value ng 7 To Temperature at 25 C Ro Resistance at 25 C and to convert Deg K to Deg C then To Tk 273 Thermistor Calculator v1 0 2014 01 31 fortmarinus com fortmarinus gmail com Thermistor Description A thermistor is a special type of resistor whose resistance varies inversely with BC2396CT ND temperature The relationship can be characterized by the beta formula NTCLE100E3103JT2 Instructions Enter the B Ty and Ro values for the thermistor here prepopulated with the values for a 10K therm Then enter the measured resistance The output is the temperature Key calculated Output Thermistor R vs T le sf y 800 a Se m a n A 60 0 al B 50 0 oy z 40 0 TL Ro 30 0 Units Deg K 20 0 Resistance in Ohms Variable Value Units Description B 3 977 0 Kelvin B Parameter from datasheet Ta 298 0 Kelvin where To 25 Deg C Cy 10 000 0 Ohms where Ro resistance 25 Deg C R 10 318 0 Ohms T 297 8 Kelvin T 76 4 Fahrenheit Resistance of thermistor T 24 8 Celsius where T 24 8 Deg C at 25 Deg C VibWire 101 Vibratina Wire Interface User manual 32 Sample Vibrating wire Displacement Sensor calibration data sheet En
53. p bit No Parity when configuring the terminal port comms on the PC laptop to communicate with the AquaLOG VW101 VW108 interfaces 20 1 Which terminal emulator software shall use Any terminal emulator software supporting VT100 terminal can be used for communications The recommended software is toten2 and this can be freely downloaded at http download cnet com windows Enter token2 12 3 Microsoft Hyper terminal Software is the most popular terminal emulator software available is is often supplied free with the operating system 22 0 MUX Control Signal Network Layout The image below shows the recommended systems layout when the sensor signals are distributed at a number of locations The MUX 16 82 control signals are daisy chained gt Oo D 100 m O Q VW 101 O O T 100 m 100 m 100 m E nT MUX 16 32 MUX 16 32 MUX 16 32 VibWire 101 Vibratina Wire Interface User manual MUX 16 32 22 1 Typical Network Layout Guide MUX 16 32 MUX 16 32 MUX 16 32 MUX 16 32 S O lt 100 m O S RS HUB 1m E VW 101 O 1 v gt 100 m lt x Suggested layout for instrumentation fitted inside a cabinet The signal hub considerably simplifies the installation wiring Signal working distance estimate using 1 5 mm cable Ensure good Earth for operations 22 23 0 Locating the comm port being used by USB converter The following instructions are for use with the Microsoft Operating Syst
54. perature output values from the interface in engineering units for all the sensor inputs that can be supported by the VibWire 101 Both the VibWire 108 and 101 units give the temperature values in mV or ratio metric The calculation for temperature from the sensor thermistor is shown below The examples below have been included to show how the temperature values are calculated by the instrument The circuit below shows the VibWire 108 vee iemperature npu wih pull up resistor completion The VibWire 101 and 108 models use 2 4 V excitation for the sensor thermistor 2 4V Excitation Viherm Voltage across thermistor VR 3300 Ohm Pull up resistor Vr Voltage across pull up resistor VibWire 108 Oen l Temp Output Viren Vibrating Wire Thermistor Level in mV OV Example A VibWire 108 101 provides an output temperature value of 1086 mV then therm 2 4 V therm 3300 where 3300 pull up resistor value where V therm 1 086 V therefore therm Excitation volt V therm S300 Pul up Resistor 2 4 1 086 3300 1 414 3300 0 398 mA using Ohms Law Note 1086 mV 1 086 Volts The Resistance of the Thermistor is calculated R therm V therm therm 1 086 0 000398 2 727 4 Ohm Now 2727 4 ohms is the resistance of the thermistor at the at temp T Temperature Conversion The thermistor resistance value is converted to temperature using the Steinhart Hart Equation T 1 where T absolute temperature in Kelvin
55. r operations Fig 67 The following logger command s create a data table Therm Wiring Instructions using the first 64 x cells in the data table Temperature measurements only All of the MUX output ports on MUX 0 and MUX 1 The first useable cell in any data table is D OnE TGIF Temp input on the VW 101 Vibrating Wire Frequency PE E Conan Connect the MUX 16 32 unit expansion D aM2 aDO aD1 aD2 aD3 Frequency results MUX 0 Chan 0 15 T aM3 aDO aD1 aD2 aD3 Frequency results MUX 0 Chan 16 31 1 x MUX 16 32 unit for unit output ports to the VibWire 101 unit MUX 1 gt AJ aM4 aDO aD1 aD2 aD3 Frequency results MUX 1 Chan 0 15 AZ aM5 aDO aD1 aD2 aD3 aay OO oo OUT 1 M UX 1 Frequency results MUX 1 Chan 16 31 Fig 68 32 x 2 wire VW sensor frequency ne The following logger commands create a data table using the first 32 x cells in the data table sensor Port Q O 5 a f ao gt The first useable cell in any data table is D VW Sensor Coil VibWire 101 Vibratina Wire Interface User manual 37 43 Earth Connection Multiple Instrument Panels When the MUX 16 32 unit is being used in a distributed but locally connected instrument system then the individual instrument boxes should be connected together using a common but good quality earth connection Typically the vibrating instrumentation is mounted onto a metal mounting plate
56. rating wire sensor connection 18 3 MUX 16 32 32 x 2 Vibrating wire sensor connection 19 0 Changing the MUX ID Number Hardware Setup 20 0 Terminal Port Settings 22 1 Typical Network Layout Guide 20 1 Which terminal emulator software shall use 22 0 MUX Control Signal Network Layout 23 0 Locating the comm port being used by USB converter 24 0 Changing the MUX ID Using Q Log 26 0 MUX 16 32 EXPANSION UNIT Changing the MUX 16 32 ID Number using AquaLOG Selecting the MUX 16 32 Expansion Unit for operation with the VibWire 101 Keynes Controls Campbell Scientific MUX Selection MUX 16 32 Expansion Unit SDI 12 Command Summary 28 0 PC Data Recording Solution 27 0 Data Logger Solution 29 0 Main Menu Terminal Port 30 0 Pluck Control 30 2 Setting the Pluck Control Appendix A Temperature Measurement Using the Steinhart Hart Equation for temperature calculation Appendix B Thermistor Temperature Calculation using the thermistor Beta Value Sample Vibrating wire Displacement Sensor calibration data sheet Appendix C AquaLOG Communication Interface amp Data Logger Configuration Data Recording Options Connection the VibWire 101 to a PC USB RS485 Pro Connection to a VibWire 101 485 VibWire 101 Vibratina Wire Interface User manual 40 O O N nN OF OO BP BP BW WN DNDN ND N N DN DN WD PDP PO PO DMPO DP NYO ND ei S SS SS FS SF SB SBS SBS SBS SF OO D OO 1 OO BB A A BD 4 0 OO DO OO ODO ONU nN OO OF FP WWW ND ND O O 27 29
57. re 101 SDI ID number and make sure this ID matches the number used in the start measurement command See page 7 for details of obtaining the SDI 12 ID for the VibWire 101 3 Use the correct Start Measurement Command aM example 2M device no MUX 16 32 with ID 2 5M2 example 1 x MUX 16 32 unit with ID 0 for 16 x 4 wire 16 x 2 wire 2 X MUX 16 32 units scan at the same time 1 Check the ID numbers of the MUX 16 32 Unit Ensure that each MUX 16 32 has a unique ID number in the range 0 3 Should 2 x MUX 16 32 units have the same ID number then they will switch channels at the same time No power to MUX 16 32 when connected to the MUX CTRL port of the VibWire 101 Check that the power supply cables OV and 12V DC of the MUX CTRL port are correctly fitted The MUX 16 32 power indicator LED will be illuminated as soon as power is applied The decimal point on the MUX 16 32 channel display blinks repeatedly when power is connected regardless to the SDI 12 control signal operation No Sensor Ping 1 Should no sensor ping be heard when directly connecting a sensor to the Vibrating wire sensor input port then check that the frequency output from the sensor is connected to the correct pins on the sensor input port 2 If when using the MUX 16 82 interfaces the frequency output from the sensors is shown to be widely wrong or around 20 KHz level then it is likely that the MUX 32 and or sensors are not wired into the system correctly Chec
58. rminal port is configured as a 9 way DTE device Step 2 Plug the USB RS232 adapter into the PC Laptop From the operating system control panel select the device manager option Window similar to that shown opposite will appear Select the Ports COM amp LPT option from the menu list to identify the Comm port number used by the USB RS232 interface Comm Port in use by the USB RS232 media converter Fe COM1 Properties Port Settings Bits per second 9600 x Data bits 8 Party Stop bits 1 How control None v COMI v Restore Defaults Lo CCE Microsoft Hyper terminal Connect To Window Microsoft Hyper terminal Comm Port Properties Window Activating the Terminal Port Menu System Tee TD SO ware ANR yi thle OUI en The menu system can be accessed and used by any modern terminal from a Terminal emulator which is supplied free in y Jany most operating systems emulator software such as Microsoft Hyper terminal Token 2 etc The software has to be VT 100 compatible The example screens above are taken from the Hyper terminal software however the communication port settings are the same no matter which package is used Step 3 Start the Terminal emulator software and configure the communications port to 9600 Baud 8 data bits 1 stop bit No parity The Comm port number used by the USB RS232 media converter is shown in the Window
59. rrect sensor frequency in the face of oscillations from higher harmonics then the pluck control feature is used Important Note 30 2 Setting the Pluck Control The Initial Pluck defines the start frequency of the sensor scan By default use the automatic sensor excitation 0 as this gives the best result for the majority Go to the Pluck Control menu as shown below of sensors The Initial Pluck frequency is a global setting and is of use only then the same model of sen Select the channel to be configured sor is used on all sensor inputs Enter the Centre Frequency for the normal operation of the sensor The operating frequency for the VW sensor input is now limited to a minimum frequency of 1 2 of the Centre Frequency and to a maximum of 2 x Centre Frequency This range removes the third harmonic oscillation which is a common cause of spikes in VW data Ba Hyperterminal B kjgf HyperTerminal A 4 File Edit View Call Transfer Help DS es 28 Worked Example Example setup channel 0 Press item 2 Set Frequency to 1000 Pluck Control 1 Initial Pluck 1000 8 2 CHO Centre frequency 0 3 CH1 Centre frequency 0 4 CH2 Centre frequency 0 5 CH3 Centre frequency 0 6 CH4 Centre frequency 0 7 CHS Centre frequency 0 8 CH6 Centre frequency 0 9 CH Centre frequency 0 U Up T Top _ A ES dea an Fig 39 opposite demonstrates how a typical spike i
60. s Device Manager Window Once the laptop is connected to the VibWire 101 terminal port then press the Config button to activate VibWire 101 Vibratina Wire Interface User manual 7 9 0 Menu System The menu system is very easy to use From the main menu simply select the type of input to configure For optimum temperature conversion use the Steinhart Hart equations For large channel count applications make sure digits is the data type setting Important Note oe Pu ae Diagnostics 1 lake single reading 2 Set Mux 3 Set mux and read 4 Set DAC at frequency U Up T Top Main Menu 1 Device Setup 2 Thermistor setup 3 Sensor Setup 4 Analog settings 5 Diagnostics 6 System Maintanence Reading sensor Pr g The most commonly used menus used by the VibWire 101 are shown below These menus are used to configure the VW sensor and thermistor inputs and to take test measurements 7 Exit Thermistor type 1 VW Sensor 1 Type 1 1 Frequency proc 1 mM _ Frequency proc 2 Resistance at TO ohms 3312 2 Thermistor type 1 3 TO Celcuis 22 3 Cal A 1 0022E31 O Hz 1 Digits Hz 2 SI Units 4 Beta 5234 4 Cal B 2 1550E27 5 Steinhart Hart Oth order A 0 0 5 Cal C 1 1929E38 where SI Units is by Quadratic Expansion 6 Steinhart
61. sheaths should be correctly terminated to the main system earth Screen Screen Earth must be connected to the G pin or direct to the main earth point CE A Multiple sensors connected to sen often makes up the 5th core in a MUX 16 32 unit in 4 x Wire mode Fig 56 demonstrates how to connect multiple MUX 16 32 expan Sofput t together to minimise interference on any measurement operation Make sure that each unit is connected together using a common earth connection Any connection labelled G is a common Earth connection There are spare Earth connections on the MUX 16 32 units The individual units are connected together using a common earth connection The final unit requires a connection to the main system earth metal mounting panel Common Single Earth Termination Point VibWire 101 Vibratina Wire Interface User manual Fig 56 38 44 System Earth amp Network Isolation Multiple Instrumentation Panels The image below demonstrates how 2 x separate instrument systems are connected together across an SDI 12 network in order to to prevent noise problems from effecting measurements The example shows the VibWire 101 and MUX 16 32 expansion units however any oth er SDI 12 network devices are connected in exactly the same way Panel 1 Metal mounting panel Network Isolator odule Isolated 12V DC Power Supply Fig 57 A
62. t Pin out Gnd OV L_ I SDI 12 12V DC L_ SDI 12 Data Communications port for connection to data logger or digital SDI 12 net work The image below shows the SDI 12 version instrument lt au O Q 09 BWIRE 101 RS232 HIGH SPEED IN TERFACE GM RENE ES Li a 0 rites ES es pame Speaker Port Pin out N A N A The speaker unit enables the operator to listen to the sensor ping Speaker connection polarity does not matter as the device will operate no matter which round the speaker is installed VibWire 101 Vibratina Wire Interface User manual SDI 12 Data SDI 12 12V DC Vibrating Wire 0 V Sensor Coil Teemo inside the Vibrating Wire Sensor pa O MUX Control MUX CTRL lt Z SDI 12 Data SDI 12 12V DC Gnd OV Control signals to the MUX 16 32 expansion unit SENSOR The vibrating wire port supports full 4 wire sensor operations The frequency input range is 400 to 6 K Hz The TEMP input temperature sensors supports most Vibrating Wire Sensor Port JUL L Gnd Frequency Signal Hz Temperature Signal mV 4 Wire Vibrating Wire sensor input Freq Temp 3 0 Technical Specifications Number of channels Expansion by MUX 16 32 unit VW sensor coil resistance Distance of VW sensor to interface VW Excitation Frequency range Frequency Resolution Accuracy Long term stability Te
63. tem below shows how to use the AquaLOG Data Logger and Communications Interface menu system to set the scan rate and how to issue commands directly Main Menu for the AquaLOG data logger The menu system below shows the commands to be followed to change the scan rate and issue User defined commands to the VibWire 101 using the AquaLOG Change Scan Rate User Commands To change the scan rate of the VibWire 101 ihWire Main Menu l To change the scan rate of the VibWire 101 Select Option 8 to go to the Logging Operations option a se 1 Device Setup Select Option 8 to go to the Diagnostics 2 Zigbee Mode Settings Select Option 1 to go to Sample Rate Period Seconds option 3 GPRS Mode Settings 4 USB Memory Stick Settings Now enter the new update rate in seconds Issue new configuration instructions at the 5 SDI12 Setup 1min 60 10min 600 1Hr 3600 command prompt 6 Formulas 7 Alarms 8 Logging Operations HR dente t The sample rate is set at the same for all D ia sensor inputs on the SDI 12 network U Up T Top Diagnostics Logging Operations 1 Es Pen 1 Sample Rate Period seconds lew data 2 Logger Info es CSV 3 Dooa Data It Values 5 Test Formulas 4 Reset Logger 6 Test Alarms U Up T Top 7 Edit Alarms 8 SDI 12 Transparent mode U Up T Top Sample Rate Period seconds Enter commands e g 0M and wait for response Current Value 60 Commands will be sent to SDI 12 with break char without carriage return gt Enter n
64. ture C Thermistor Ohm Temperature compensated readings only Atm pressure kPa work if the thermsitor operation is defined Coil resistance Ohm Zero conditions in the field must be established by recording the reading RO digit along with temperature TO C and atmospheric pressure SO kPa at the time of installation If polynomial constants are used determine value of C as per 6 2 of user s manual Appendix B Main Menu Frequency proc 1 Device Setup 2 Thermistor setup 3 Sensor Setup where SI Units is by Quadratic Expansion 4 Analog settings 5 Diagnostics 6 System Maintanence 0 Hz 1 Digits Hz 2 SI Units 7 Exit Channel 0 1 Frequency proc 1 2 Thermistor type 1 3 Cal A 2 2253E 07 4 Cal B 2 8085E 01 5 Cal C 1 8512E 03 6 Cal D 0 087 U Up T Top VibWire 101 Vibratina Wire Interface User manual 33 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 al lows for local atmospheric conditions and be taken from a barometer module such as mod els Barom SDI12 or Barom 485 The VW sensor units have to be set to Digits that is Hz 1000 APPENDIX C AquaLOG Communication Interface amp Data Logger Configuration AquaLOG Menu System The menu sys
65. ual for full details on this operation The SDI 12 commands to make a measurement will be 7M2 VibWire 101 Measurement Command MUX with ID 0 scans channels 0 15 7M3 VibWire 101 Measurement Command MUX with ID 0 scans channels 16 31 Start measurement 7M4 VibWire 101 Measurement Command MUX with ID 1 scans channels 0 15 7M5 VibWire 101 Measurement Command MUX with ID 1 scans channels 16 31 Read data Start Cell Data Table 7M2 7D0 7D1 7D2 7D3 MUX ID 0 Start Cell 16 Chars 7M3 7D0 7D1 7D2 7D3 MUX ID 0 Start Cell 32 Chars 7M4 7D0 7D1 7D2 7D3 MUX ID 1 Start Cell 48 Chars 7M5 7D0 7D1 7D2 7D3 MUX ID 1 The data table used in all of Keynes Controls data loggers and Q LOG data display software uses Microsoft Excel Cell References VibWire 101 Vibratina Wire Interface User manual 17 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 for instruction in setting the Scan Mode AG AIG t In 16 x 4 wire mode the channel counter displays the range 0 15 iF TO een Ore Channel Select Display Start Measurement MUX Channel No Data Values SDI 12 Get Data Command Command Identification Number Fig 9 Sensor Output Ports aM2 MUX 0 Cha
66. xternal power supply can be used when large number of units are being used Isolated USB Media Converter Model No USB SDI12 Pro Part No MUX 16 32 USB RS485 Pro Expansion Unit VibWire 101 Vibrating Wire Interface User manual 3 1 0 Channel 1 micro Strain Cmmi niapi Channel 4 J L 2 0 MUX CTRL PC Laptop Data Recording amp Display System Part Numbers VibWire 101 SD112 VibWire 101 485 Isolated USB Media Converter SDI 12 RS485 network CE Last Updated March 2014 MUX 16 32 Expansion Unit 1 64 4 Wire Expansion 1 128 2 Wire Expansion The image above shows how the VibWire 101 can be integrated into a PC based data recording and display solution using the Q LOG application software Download additional details for Q Log at http www aquabat net QLOGFree qlogv2 html Q LOG will also operate with many third party intelligent sensors The MUX control port is used by the VibWire 101 to transmit the control signals to the multiplexer expansion interfaces The MUX control port operates to the same electrical specification as the SDI 12 port but cannot be used by any other third party device and is not programmable Network Port SDI 12 RS 485 Network port for connection to a data logger or suitable network SDI 12 Data SDI 12 12 V DC SDI 12 OV rid lt RS 485 Port Pin out RS485 RS 485 Mages one VibWire 101 SDI 12 Por

VibWire-101 - Keynes Controls Ltd

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