VWread User Manual
Contents
1. 4 Device Info Device Info VWRFW 1 01 2013 Device Info Batt Volts 5 27 y Lo Brd Tmp 15 8 C Main Menu 5 Turn Off Turning Off READ SENSOR SENSOR SETUP SWEEP RANGE FREQ UNITS EX VOLTAGE TEMP UNITS SET DEFAULTS Select this menu item to take a reading of the VW sensor that is currently connected to the VWread This option leads to you the sub menus where the sensor setup preferences can be changed to suit your requirements These menu options are explained further in the following paragraphs Selecting the Set Sweep Range function allows you to choose from five pre set frequency ranges 400 gt 6000 Hz e 400 gt 1125 Hz 800 gt 2000 Hz 1400 gt 3500 Hz 2300 gt 6000 Hz The suitable frequency range will be dependent on the type of VW instrument you a reading Please refer to the manufacturers specifications for the VW Sensor you are reading when setting the sweep range This menu gives you three choices of frequency units Hertz e Linear F 1000 Period tx 107 Ex Voltage allows you set the excitation voltage according to the type of VW sensor you are going to read There are two options available e 5 volts e 15 volts This menu gives you four options of temperature units e Celsius e Fahrenheit e Kelvin e Ohms Once you have set all the preferences to suit your requirements se2. connected and then check the signal cable and the sensors What sweep frequency range should use to read my VW sensors In most cases the default sweep frequency range 450 6000 Hz works well because VWread uses FFT reading algorithm to derive readings from the sensor Optionally you can customise the sweep frequency to any range between 450 Hz and 6000 Hz such as 800 1125 Hz or 800 2000 Hz What does Fast Fourier Transform FFT mean Any time varying signal a musical sound for instance will be composed of one or more component frequencies of different amplitudes The Fast Fourier Transform FFT algorithm is a fast and efficient method of determining what those component frequencies are along with their respective amplitudes Will VWread work at very low or very high temperatures The VWread was tested and working after it had been in a temperature chamber for an hour at 10 C At temperatures lower than 10 C the LCD screen may become unreadable The same test was conducted at 50 C and the VWread functioned normally 33 SUPPORT www itmsoilsupport co uk 44 0 1825 765044 soil INSTRUMENTS Bell Lane Uckfield East Sussex t 44 0 1825 765044 e info itmsoil com TN22 10L United Kingdom f 44 0 1825 744398 w www itmsoil com Soil Instruments Ltd Registered in England Number 07960087 Registered Office 5th Floor 24 Old Bond Street London W1S 4AW
3. display of VW sensor readings in Hz Hz 1000 and period units FFT based data reading algorithm for interference free readings Reads with the default full sweep frequency range 400 6000Hz or various preset ranges Fully configurable reading and displaying parameters of each sensor Powered by a Nickel Metal Hydride NiMH rechargeable battery 30 hours without backlight and 15 hours with backlight User selectable backlight for the display auto shutdown after five minutes of inactivity Powerful features in a rugged and portable package makes it easy to carry and operate in all site conditions Advanced FFT based reading algorithm ensures readings are accurate repeatable and free from interferences Easy to follow menu makes taking readings on site simple fast and error free The optional 15 VDC excitation which provides higher energy excitation than the default excitation of 5 VDC ensures quality readings for sensors with long cables 10 System Components THE VWREAD The VWread is a handheld readout unit for VW sensors Below is a picture of the VWread showing the various parts that you will use to interact with it Rechargeable battery charging point Sensor connector Backlit LCD display VW SENSOR The VW sensor lead is shown in the picture below One end of the lead LEAD has a Lemo plug that you will plug into the sensor connector on the top left of the VWread On the other end of the lead are four croc
4. 9 974 0 05 546 2 9 966 0 07 15 00 4555 8 4818 0 15 032 0 06 549 2 14 988 0 02 20 00 4316 6 5366 8 20 087 0 17 548 8 20 021 0 04 25 00 4112 2 5913 5 25 123 0 25 546 7 25 049 0 10 30 00 3937 9 6448 8 30 053 0 11 535 3 29 987 0 03 35 00 3782 8 6988 5 35 024 0 05 539 7 34 981 0 04 40 00 3643 9 7531 2 40 023 0 05 542 7 40 017 0 03 45 00 3521 8 8062 5 44 917 0 17 531 3 44 961 0 08 50 00 3409 0 8604 8 49 912 0 18 542 3 50 022 0 04 Formulae Linear E G R0 R1 Polynomial E ARI BRI C The zero reading should be established on site by the user on installation The site value of C must be calculated using the formula C ARO BRO The instrument detailed hereon has as applicable been inspected tested and calibrated in accordance with ISO 9001 2008 approved procedures and unless otherwise indicated performs within 0 20 Polynomial ms in all respects to our relevant specifications and drawings Calculation of Engineering Units From Frequency Readings of VW Sensors The mathematical relationship between the resonance frequency of a tensioned wire and the force applying the tension is represented by a near straight line relationship between the square of the frequency Hz and the applied force The sensor readings in frequency can be converted to measurements in engineering units such as mm kPa or psi using the following equations CALCULATION The following equation is used for readings in Hz 1000 USING LI
5. ENSOR SENSOR SETUP Main Menu 1 Read Sensor VW VW Reading TH Temperature user defined units y Main Menu 2 Sensor Setup Sensor Setup 1 Sweep Range Set Sweep Range 1 400 gt 6000 Hz N y O 2 400 gt 1125 Hz y 3 800 gt 2000 Hz y 4 1400 gt 3500 Hz y 5 2300 gt 6000 Hz Sensor Setup 2 Freq Units Set Freq Units 1 Hertz y 2 Linear y 3 Period Sensor Setup 3 Ex Voltage Set Ex Volatge 1 5 Volts y 2 15 Volts Sensor Setup 4 Temp Units Set Temp Units 1 Celsius y AAA 2 Fahrenheit y 3 Kelvin y 4 Ohms Sensor Setup 5 Set Defaults Setting Defaults DONE 19 20 Menu Structure y DEVICE SETUP DEVICE INFO TURN OFF Main Menu 3 Device Setup Device Setup 1 Set Contrast Set Contrast Level 100 Device Setup 2 Set Backlight Set Backlight Level 100 l Device Setup 2 Set Auto Off Set Auto Off 1 5 mins Y 2 15 mins y 3 30 mins y 4 60 mins y 5 Always On Device Setup 4 Set Defaults Setting Defaults DONE Main Menu
6. NEAR EQUATION E Gx RO R1 where E is the resultant Engineering unit G is the linear Gauge factor for the units of calibration RO is the base or zero reading in Hz 1000 taken at the time of installation R1 is the current reading in Hz 1000 CALCULATION The polynomial formula for all itmsoil VW sensors is USING POLYNOMIAL E AxR1 BxR1 C EQUATION where E is the resultant value in Engineering units A Band C are the polynomial factors from the calibration sheet R1 is the current reading in Hz2 1000 It should be noted that C is an offset value derived from a base reading in the factory where the sensor calibration is performed itmsoil recommend the value for C should be recalculated at the time of installation from the RO as follows C A x RO B x RO 31 32 Appendix B Frequently Asked Questions What happens if drop the VWread unit The VWread is resistant to a drop from one metre onto a concrete surface The VWread is supplied with a wrist strap so you can keep it attached to your wrist when in use Please make use of it to avoid accidental damage What do do if my reading is unstable Check that the crocodile clips are correctly connected to the sensor Why am I getting a display of VW No Sensor or TH No Sensor This means no VW sensor and or no thermistor sensor is connected or the sensor or the signal cable is faulty Check the sensor lead is properly
7. atable readings every time Contents PART OVERVIEW Introduction Important information Product Changes Warranty Disposal System Description Things You Need to Know About VWread Features Benefits System Components The VWread VW Sensor Lead Rechargeable Battery amp Charger VWread Carry Case Quick Start Guide Before You Go To Site When You Are In The Field PART Il DETAILED VWREAD USER GUIDE Charging the VWread Connecting Sensors to the VWread VW Sensor With Built In Temperature Sensor VW Sensor Without Built In Temperature Sensor How to Use the Keypad Menu Structure Read Sensor Sensor Setup Menu Structure Device Setup Device Info Turn Off Read Sensor Sweep Range Freq Units Ex Voltage Temp Units Set Defaults Sensor Setup WO O O O Roo CO CONGO COON for RI pr gt Se i W OO oO IICA 20 Device Setup Set Contrast Set Backlight Set Auto Off Set Defaults Device Info Turn Off PART III MAINTENANCE GUIDE Routine Maintenance Battery Maintenance Battery Life Calibration PART IV APPENDICES Appendix A How to apply Calibration Factors for VW Sensors Calculation Using Linear Equation Calculation Using Polynomial Equation Appendix B Frequently Asked Questions 22 22 22 22 DI 22 22 24 26 26 27 DI 28 PRECISELY vie WER instrumentation and monitoring Part Overview Contents This section co
8. built in temperature sensor only connect WITHOUT the sensor to the red and the black crocodile clips BUILT IN TEMPERATURE SENSOR Only a qualified person trained in the use of VWread and the VW sensors may connect sensors 17 How to Use the Keypad n E n On TES i Udi Left e Let a Enter 18 Below is a picture showing the keypad of the VWread Each key on the keypad has multiple functions depending on its context within the VWread menu The Y key acts as an down instruction It moves the cursor i down in the currently displayed list such as the main menu i and readings screen The key acts as an back instruction When a menu option i is selected pressing this key will take you back to the previous i menu selection i The YH acts as a next instruction Pressing this key will take you to the next menu selection or confirm a current menu selection FUNCTION The On button has two functions 1 When the VWread is off pressing it turns the VWread on 2 When the VWread is already on pressing it will toggle the LCD displays backlight between on and off The key acts as an up instruction It moves the cursor up in the currently displayed list such as the main menu and readings screen E The Enter button acts as a select instruction Pressing this key will confirm a current menu selection Menu Structure READ S
9. een VWread charged switched to trickle charge mode 26 BATTERY LIFE CALIBRATION Follow the charging procedure outlined in this manual at all times to properly maintain the Vertical Digital Inclinometer System Battery life is a function of a combination of the following factors e Battery type e Auto Off settings e How often the VWread is used to take reading e Contrast and Backlight settings e How often the backlight is switched on e Ambient temperature In designing the VWread system itmsoil have produced firmware routines to maximise the battery life As a rule of thumb the VWread can achieve battery life of up to 30 hours without backlight and 15 hours with the backlight switched on To maximise battery life the VWread has an inbuilt off timer When the VWread has been inactive for a pre set time it will automatically turn off The battery voltage in the VWread should be above 4 6 volts for the VWread reading circuitry to work If the voltage goes below 3 6 volts the VWread will shut off Each VWread is calibrated before it is shipped To meet your calibration needs we offer re calibration services at our facilities If you intend shipping the VWread back to our factory please contact itmsoil or our distributors for more information 27 Part IV Appendices Contents This section contains the following topics TOPIC SEE PAGE Appendix A How to apply Calibration Factors for VW S
10. ensor lead ready to take to site VWread will automatically turn itself off after 5 minutes of not being used to save battery power WHEN YOU 1 Remove the VWread from its carry case ARE IN THE 2 Switch on the VWread and follow the procedures below to take FIELD a reading Connect a VW sensor to the VWread using the sensor lead Goto Main Menu 1 Read Sensor Press the gt to read the sensor e Make a note of the VW reading and temperature reading if required e Disconnect the sensor cable from the crocodile clips 12 Part Il Detailed VWread User Guide Contents This section contains the following topics I A eu u ee ee SEE PACE O a Connecting Sensors to the VWread Y VW Sensor With Built In Temperature Sensor Menu Structure Read Sensor 9 Sensor Setup 9 i Menu Structure 20 Device Setup N Read Sensor 2 de Sweep Range A i Freg Units dl Ex Voltage A Sensor Setup Device Setup Set Contrast Set Backlight Set Auto Off Device Info Turn Off 22 iS 16 Charging the VWread The VWread is supplied with a Nickel Metal Hydride NiMH rechargeable battery It is important to follow the charging procedure outlined below at all times to correctly maintain the battery 1 Make sure the VWread is switched off nis Remove the protective cap from the charging point located on the top ofthe VWread 3 Plug the connector into the char
11. ensors i W e Calculation Using Linear Equation Br Calculation Using Polynomial Equation 32 e Appendix B Frequently Asked Questions 30 Appendix A How to apply Calibration Factors for VW Sensors The calibration certificate for your VW sensor will provide you with the information on how to convert the raw readings into readings in engineering units Below is an example of calibration certificate from itmsoil itmsoil Bell Lane Uckfield East Sussex t 44 0 1825 765044 e info itmsoil com TN22 1QL United Kingdom f 44 0 1825 744398 w www itmsoil com VIBRATING WIRE INSTRUMENTS CALIBRATION CERTIFICATE Instrument Type E10 Displacement Transducer Serial No 042564 Instrument Range 0 00 to 50 0 mm Calibration Date 19 01 2012 Gauge Factors in mm Ambient Temperature 323 C Period Gauge Factor K 92 1072800 Barometric Pressure 1016 mbar Linear Gauge Factor G mm digit 0 0092100 Calibration Technician Wayne Diprose Polynomial Gauge Factor A 0 000000024979630 Digital Micrometer Scale Polynomial Gauge Factor B 0 0089164270 Vibrating Wire Logger Serial No 636 Polynomial Gauge Factor C 28 551660 Regression Zero 3185 9 Applied Reading Reading Calculated Error FS Linear Calculated Error FS mni Period F 1000 Linear Linear Increment Polynomial Polynomial 0 00 5610 9 3176 4 0 088 0 18 0 0 0 023 0 05 5 00 5182 9 3722 6 4 943 0 11 546 2 4 987 0 03 10 00 4840 0 4268 8
12. ging point on the VWread 4 Plug the charging unit into a mains power socket 5 Switch on the mains power to the charging unit pn The LED on the charging unit will follow the sequence outlinedin 6 the table below 7 Place the protective cap back into the charging point on the VWread when charging is complete Lo A A u u u a 1 Red Green poni ea Analysing battery status 2 Red Green 3 Red Charging in progress 4 Green VWread charged switched to trickle charge mode Follow the charging procedure outlined in this manual at all times to properly maintain the VWread Connecting Sensors to the VWread You can connect only one Vibrating Wire sensor at a time to the VWread this sensor can be with or without a built in temperature sensor VW SENSOR All sensor connections to the VWread are made via the Lemo plug WITH BUILT IN which is located under a cap on the top of the VWread as shown in TEMPERATURE the figure below SENSOR CLIP COLOUR SENSOR TERMINAL Red VW Black VW Temperature Temperature Consult the sensor user manual for the sensor connections If you are still unsure please contact itmsoil Please ensure that the bare parts of the clips do not touch each other and cause shorts among the four wires VWread is only compatible with NTC 3k Q thermistor temperature sensors It will not work with RTD based temperature sensors in some Manufacturers VW sensors VW SENSOR For a VW sensor without
13. lect the Set Defaults option All your settings will be saved and confirmed with Setting Defaults DONE 21 22 DEVICE SETUP Device Setup presents you with a number of options that are specific to the device itself These options are further explained in the following paragraphs SET CONTRAST SET BACKLIGHT SET AUTO OFF SET DEFAULTS DEVICE INFO TURN OFF his option allows you to set the screen contrast level anywhere from 0 100 The level can be adjusted using the As and Y keys This option allows you to set the backlight level anywhere from 0 100 The level can be adjusted using the M and W keys This function allows you to set the amount of time before the device will automatically turn itself off when not in use There are five options available e 5mins recommended setting e 15mins e 30mins e 60mins e Always On Choosing the Always On setting will significantly reduce the amount of battery charge in the device The optimum Auto Off setting for preserving battery charge is 5 minutes Once you have set all the preferences to suit your requirements select the Set Defaults option All your settings will be saved and confirmed with Setting Defaults DONE Device Info provides you with the following information Firmware version date Battery Volts Board Temperature Selecting Turn off will turn the unit off irrespective of the pre se
14. ntains the following topics TOPIC SEE PAGE Introduction 8 Co i Important information Features Benefits Introduction Important information The following symbols are used throughout the manual IMPORTANT INFORMATION PRODUCT CHANGES WARRANTY DISPOSAL 940 QUESTION WARNING Important Failure to adhere to the warnings in this manual may result in network disruption and possible data loss Failure to observe the warning may result in injury product malfunction unexpected readings or damage to the product that may invalidate its warranty Tips give additional information that may be helpful when using VWread itmsoil 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 Refer to our terms and conditions of sale for warranty information The batteries are a consumable item and are excluded from the warranty Products marked with the ms symbol are subject to the following disposal rules in European countries e This product is designated for separate collection at an appropriate collection point Do not dispose of as household waste e For more information contact itmsoil or the local authority in charge of waste management System Description Things You Need to Know About VWread FEATURES BENEFITS Portable and rugged Compatible with most commonly used VW sensors Realtime
15. odile connectors coloured red black green and white for connecting to the wires in the signal cable of a sensor with matching colours RECHARGEABLE The VWread contains a Nickel Metal Hydride NiMH rechargeable BATTERY amp battery and is supplied with a Smart battery charger CHARGER itmsoil Smart Battery Charger earo VWREAD The VWread is supplied with a padded carry case with shoulder CARRY CASE strap and pockets for the sensor connecting lead We recommend hat you carry and store the VWread in the carry case whenever it is not being used 11 Quick Start Guide BEFORE YOU 1 Remove the VWread from its carry case and place it on charge GO TO SITE ensuring that you follow the charging procedure outlined in Part Il Detailed VWread user Guide Charging the VWread 2 Switch on the VWread 3 Familiarise yourself with the reading function below Connect a VW sensor to the VWread using the sensor lead e Goto Main Menu 1 Read Sensor e Press the to read the sensor e Check the VW reading and the temperature reading Follow the troubleshooting guide in Appendix C in Part V of this manual if the readings are unstable or incorrect 4 Switch off the VWread by selecting Main Menu 5 Turn Off then press the gt key 5 Unplug the sensor lead from the VWread Replace the sensor connector cap 6 Place the VWread in its carry case along with the s
16. soil INSTRUMENTS Man 238 VWread User Manua Soil Instruments Limited has an ongoing policy of design review and reserves the right to amend these specifications without notice Man238 VWread MN0814 Rev1 0 1 What s this manual about This manual tells you about the VWread and how to use it to take readings from VW sensors Who does this apply to Installers field engineers and technicians who need to acquire readings from VW sensors and to maintain the VWread system Welcome Thank you for choosing the VWread This manual has been written to help you utilise all ofthe functions of the VWread Please read this manual thoroughly before use to help avoid any problems and keep it handy when using the VWread VWread The VWread is a handheld device which takes readings from Vibrating Wire VW sensors It uses the Fast Fourier Transformation FFT based reading algorithm which not only gives more reliable readings but also gives the user the ability to check the quality of each reading rejecting it when there is too much interference The VWread can read almost all commercially available vibrating wire sensors Built with state of the art electronic components and the latest firmware technology each VWread comes with many powerful built in functions These functions will allow you to customise how readings from each sensor are taken displayed stored and managed in order to assure correct and repe
17. t Auto Off function Part Ill Maintenance Guide Contents This section contains the following topics TOPIC SEE PAGE RoutineMaintenance oot Battery Maintenance OO 260 Dl Battery ife O O Oo a Calibration O Routine Maintenance BATTERY The VWread is manufactured with a multi layer circuit board containing MAINTENANCE surface mount components For this reason there are no parts which require routine maintenance The VWread is supplied with a Nickel Metal Hydride NiMH rechargeable battery Although the battery requires no maintenance as such it is important to follow the charging procedure outlined below at all times to correctly maintain the battery As rechargeable battery capacity reduces over time the VWread battery will be tested and replaced if necessary during annual re calibration de i 1 ake sure the VWread is switched off de gt Remove the protective cap from the charging point locatedon i GUI VEN ee ER 3 Plug the connector into the charging point on the VWread 4 Plug the charging unit into a mains power socket 5 Switch on the mains power to the charging unit s The LED on the charging unit will follow the sequence outlined in DIA A __ _ tt _ o 7 Place the protective cap back into the charging point on the VWread when charging is complete Charging Unit LED Sequence u u U no neun u A Red Green Ama Ys IO Date nvistarUs 2 Red Green E 3 Red Charging in progress 4 Gr
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