DSCUSB Toolkit Manual Strain Gauge or Load Cell Digitiser Module
Contents
1. 18 Identifying Strain Gauge Connections sscscescsesesesesesesssesessseeeeeseseseeeseseeeeeceseecoseesesesesessseseseee 19 42 Ue ean es 19 E T ai de sweet a coed E 19 Chapter 4 Specifications cteccwss tence ceecseeseacdeeeaees 20 Technical Specifications DSCUSB saan NDANE ROS Banaaan Aaaa 20 Environmental 5 21 5 21 21 1 Mantracourt Electronics Limited DSCUSB User Manual Chapter 1 Introduction This chapter provides an introduction to the DSCUSB products describing the product range and main features Overview The DSCUSB products are high precision Strain Gauge Converters converting a strain gauge sensor input to a digital USB serial output They allow high precision measurements to be made and communicated directly to a PC With the appropriate drivers installed the DSCUSB appears as a virtual communication port to the PC Free standing module fitted with 9 way D type socket for load cell temperature a2. a 2 Non Linearity before Linearization _ 5 25 ppmofFR Internal Resolution f6Milion Counts divs_ Resolution 1Hz readings Noise stable over 100s 66 000 Counts divs Resolution 10Hz readings Noise stable over 1005 40 000 Counts divs_ Resolution 100Hz readings Noise stable over 100s 10 000 Counts divs_ Resolution 500Hz readings Noise stable over 100s Counts divs_ Signal Filter Dynamic recursive type user programmable Electrical ooo d S S Power Supply current 350 Ohm Bridge 6 53 m S a a a Data transmission Data transmission rate 24 408 kbs Output cable length speed dependant _ 15 m _________ Environmental _ Operating temperaturerange 1 OH Storagetemperature TH Humidity RH _ E Dimensions _ Cased version 86 x 57 x 26 5mm 3 3465 x 2 2492 x 1 087 excluding connector 95mm 3 740 including 9 way D type connector with 136 cm 94 462 feet USB cable Notes 1 From original offset at any time 2 1st Year Mantracourt Electronics Limited DSCUSB User Manual Environmental Approvals CE Approvals European EMC Directive 2004 108 EC BS EN 61326 1 2006 BS EN 61326 2 3 2006 Output shall not exceed the sum of uncertainties when subjected to an electric field of 10V m over the frequency range 80 to 600MHz Warranty All DSC products from Mantracourt Electronics Ltd Mantracourt are warranted again
3. Enter the engineering units required at 2 points Apply these inputs then click the Acquire button in sequence System Zero amp 118 wom UU Shows the calibrated value 2 Point Certificate Calibration mvV V Weight 0 0000 0 0000 Enter two mV V and weight points from the loadcell certificate then click Calibrate Calibrate mV V Revert to factory default calibration Reset Shunt Calibration This page allows you to apply a two point calibration Enter the required engineering unit value for each point then apply the input and click the Acquire button Calibrating will remove system zero Note that when calibrating the Cal Under and Over limits may be modified if they are deemed to be incorrent You may alter them again after calibration Remove To perform System Zero Zero Activate Shunt Cal Turn Cal Under SMIN Cal Over SMAX Set the minimum and maximum input values in calibrated engineering units When the input falls outside these limits the Cal Under or Cal Over indicators will be displayed on the Information screen Over amp Underrange Limits Device serial number 1000234569 COM1 App 1 0 22 Drv DLL 1 2 This page allows you to calibrate the device set limits and perform system zero 2 Point Auto Calibration The automatic calibration requires that you apply two known ascending weight in sequence Just enter the required engineering unit value for the tw
4. DSCUSB Toolkit Manual Strain Gauge or Load Cell Digitiser Module User Manual WWW mantracourt co uk FOR ENTERPRISE Ml mantracourt Contents Chapter 1 INtroduction 22 22 Sec beck See AEEA AEE AA ee eke ene 2 OVERVIEW osinaren aes aar a R cde ces a 2 Chapter 2 Getting Started 2 3 Communications Interface Information 3 DSE 3 What Can The Toolkit Do 3 Installing DSC Toolkits rinane sedan cay E E GE E 3 Found New Hardware Wizard ATAATA ATASA AOA 4 Connecting up the Device 2 E Se EEEE S 6 USING the SoftWare EEEE 6 Chapter 3 Explanation of 1 16 Dynamic Filtering Filter Level amp Filter Steps c cceccsccsccsccsccsccsccsccsccesssscescesesscescessessessesseseees 16 Chapter 4 18 Before 1 5
5. No device selected Connect App 1 0 16 Drv DLL 1 2 You can then select a different device or plug in a different device If you change the connected devices click the Detect button to re list the devices Then select the required device from the list 9 Mantracourt Electronics Limited DSCUSB User Manual Click the icon to open the Save amp Restore page Save And Restore Page DSC Toolkit Save and Restore Query the device for its parameters and save these to a configuration file on Help your computer or network location This page allows you to save the configuration of the connected device to a disk file on your computer Load a previously saved configuration file into the currently connected device This file may then be used to NOTE As all parameters are restored you will overwrite the existing device restore the configuration to calibration information the same device or to clone the configuration onto another device Device serial number 1000234569 on COM9 App 1 0 16 Drv DLL 1 2 Clicking the Save buttons will allow you to specify a file to which the configuration of the connected device is written Once saved this file can be selected after clicking the Restore button and the settings restored to the same device or to another device Mantracourt Electronics Limited DSCUSB User Manual 10 Click on the icon to open the Data Rates amp Filter page Data Rat
6. and the internal working value of Filter Steps is reset to 1 This is then incremented each update set by Measurement Rate until it reaches the user set value of Filter Steps 17 Mantracourt Electronics Limited DSCUSB User Manual Chapter 4 Installation This chapter gives detailed information on integrating the DSCUSB into a production system including mounting protection adjustments wiring and electrical requirements Before Installation Carefully remove the DSCUSB device from its shipment box Check that the device is complete and undamaged Check the Product Type Code on the product label is that which you ordered The DSCUSB can operate in any industrial environment providing the following limits are not exceeded Operating Temperature 40 C to 85 C Humidity 95 non condensing Storage temperature 40 C to 85 C Mantracourt Electronics Limited DSCUSB User Manual Identifying Strain Gauge Connections 4 wire load cell Load Cell Connections 6 wire load cell Load Cell Connections 6 wire 19 Mantracourt Electronics Limited DSCUSB User Manual Chapter 4 Specifications Technical Specifications DSCUSB The DSCUSB is factory set for 2 5mV V sensitivity train Gauge Excitation System Strain Gauge Drive Capability 8 f 5000 Ohms Offset Temperature Stability _ 5 f 10 pmc Gain Temperature Stability 3 50 Offset Stability with Time _ _ 160 ppmofFfR 1 ies E
7. Select No not at this time so that the wizard does not try searching online for a driver Click Next Found New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps you install software for USB DSC Bus 9 If your hardware came with an installation CD QP floppy disk insert it now What do you want the wizard to do Now the wizard will start searching for the drivers Found New Hardware Wizard Please wait while the wizard searches USB DSC Bus Cancel Mantracourt Electronics Limited DSCUSB User Manual The wizard should then proceed with installing the software drivers Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for ep USB DSC Bus Click Finish to close the wizard Please note that there are two interfaces to the hardware so that there are two drivers that will be installed The USB DSC Port and the USB DSC Bus So the next dialog box you will see will be for the USB DSC Port and the steps will be repeated from step 2 Found New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps you install software for USB DSC Port 9 If your hardware came with an installation CD lt gt or floppy disk insert it now What do you want the wizard to do Install from a list or specific location Advanced Click Next to continue 5 Mantracour
8. Some log rates may not be achievable depending on PC speed and how busy the PC is When logging you will be shown the actual log rate being achieved App 1 0 16 Drv DLL 1 2 diagnostics such as when a heavily burdened PC is slowing the log rate DSC Toolkit Logging Log Interval ms Bd x LOIA Help hoo Select an interval in milliseconds At faster rates you may be limited by PC speed so data may not be Here you can log the data toa recorded at required rate Log File C Users matt AppData Roaming Mantracourt DSC_ The currently selected log file Note that existing data in a file will be overwritten when a new log starts Logging at 10 000Hz to C Users matt AppData Roaming Mantracourt DSC Toolkit DSC 1000459673 csv and achieving 9 717Hz Device serial number 1000234569 on COM9 15 Mantracourt Electronics Limited DSCUSB User Manual CSV comma separated value file which may be later opened in MS Excel for example The data is recorded as follows Date Blapsed ms Value Some log rates may not be achievable depending on PC speed and how busy the PC is When logging you will be shown the actual log rate being achieved App 1 0 16 Drv DLL 1 2 This is useful for Chapter 3 Explanation of Filter Dynamic Filtering Filter Level amp Filter Steps The Dynamic filter is basically a recursive filter and therefore behaves like an RC circuit It has two u
9. conds since the start of the log Mantracourt Electronics Limited DSCUSB User Manual 14 Value is the numeric value logged Example 06 06 2005 gt 25300008 98 99 7E 6 06 20090 We 07s gt 5000085856 03 NE7 06 2005 Ila Al 06743 3125 500008589 7IE 03 06 05 2009 06 oc 250000085896 If the measurement rate of the device is less than the rate at which you have chosen to log you will be informed with a message as shown below Either reduce the Log Interval or reduce the Measurement Rate DSC Toolkit Logging Log Interval ms BIS LOIA Help C Select an interval in milliseconds At faster rates you may be limited by PC speed so data may not be you can log the data to a recorded at required rate Log File The currently selected log file Note that existing data in a file will be overwritten when a new log starts You have chosen to log at a rate of 100 00Hz but the measurement rate of the device is set to 10 00Hz Because the device only produces a new reading at 10 00Hz the logged data will contain multiple readings of the same value ie Not Logging Device serial number 1000234569 on COM9 Once the logging starts the actual achieved log rate will be displayed at the bottom of the window CSV comma separated value file which may be later opened in MS Excel for example The data is recorded as follows Date Elapsed ms Value
10. designed specifically for configuring ASCII DSCs If you have a device with a different communications protocol you will have to use Instrument Explorer This toolkit allows configuration calibration logging and parameter management of the DSCSUEASC modules What Can The Toolkit Do Viewing of input with enunciators for integrity and range errors Two point auto calibration by application of known weight Setting System Zero and under and over range limits Select measurement rate and filter settings Save device settings including user calibration and ability to restore to same or different USB DSC modules Log input value to a CSV file at up to 100Hz which can be analysed in Microsoft Excel Installing DSC Toolkit Install the DSC Toolkit software by inserting the CD in the CD ROM drive This should start the AutoRun process unless this is disabled on your computer If the install program does not start of its own accord run SETUP EXE on the CD by selecting Run from the Start Menu and then entering D SETUP where D is the drive letter of your CD ROM drive The installation software pre installs the required drivers so that they can be automatically found when the hardware is plugged in later on 3 Mantracourt Electronics Limited DSCUSB User Manual Found New Hardware Wizard After installing the software you can connect the DSCUSB device to the computer The Found New Hardware Wizard should now appear
11. es And Filter Page DSC Toolkit Data Rates amp Filter 8 _ Measurement Rate Help 10Hz Select a measurement rate This rate affects the quality of the measured reading ARAIRE measurement rates and filtering Filter Level mV V 0 001 _ Select a level for the dynamic filter If the millivolt input changes by more than this amount between samples the filter will be disengaged so that the reading will quickly respond to fast transients at the input Set to zero to disable filtering Filter Steps 100 The steps determine the amount of filtering applied At each measurement 1 steps of the input will be applied to the output Set to zero to disable filtering Noise Free Resolution 15 25 bits or 1 40 000 3db Down Frequency 0 016Hz Device serial number 1000234569 on COM9 App 1 0 16 Drv DLL 1 2 This page allows you to select the measurement rate and filtering characteristics The measurement rate affects the noise free resolution which is indicated at the bottom of the page The filter level and filter steps affect the frequency response of the input which is indicated at the bottom of the page See Chapter 3 Explanation of Filter 11 Mantracourt Electronics Limited DSCUSB User Manual 24 Click on the icon to open the Calibration page Calibration Page DSC Toolkit Calibration mV V Input _nAnnannan WWII Shows the input applied 2 Point Auto Calibration
12. he interests of continued product development Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice DESIGNED amp MANUFACTURED IN THE UK Code No 517 916 Issue 1 3 26 07 11 21 Mantracourt Electronics Limited DSCUSB User Manual
13. ing page DSC Toolkit Logging RS Log Interval ms Help 100 Select an interval in milliseconds At faster rates you may be limited by PC speed so data may not be you can log the data toa recorded at required rate CSV comma separated value Log Fi le which may be later opened in MS Excel for example The data is recorded as follows Date lapsed ms Value The currently selected log file Note that existing data in a file will be overwritten when a new log starts Some log rates may not be achievable depending on PC speed and how busy the PC is When logging you will be shown the actual log rate being achieved a Not Logging Device serial number 1000234569 on COM9 App 1 0 16 Drv DLL 1 2 The toolkit allows you to log data to a CSV Comma Separated Value file This file will open in MS Excel when double clicked Log Interval Choose Log Interval in milliseconds between 10 and 32000 10mS will enable a log at 100Hz Log File Select a file to log to Note that each time the log starts it will erase any data already in the file Start Clicking this button will start the log Stop Clicking this button will stop the log View When a log has just been stopped this button will launch the application associated with CSV files The format of the log file is as follows DateTime Elapsed Value Where DateTime is the date and time in long format Elapsed is the time elapsed in millise
14. nd digital 1 0 connections Integral USB lead with type A connector Dimensions Case 86 x 57 x 26 5mm excluding connector 95mm 3 740 including 9 way D type socket with 136cm 4 462 feet USB cable Mantracourt Electronics Limited DSCUSB User Manual Chapter 2 Getting Started Please ensure that software is installed before connecting the device to your PC This chapter explains how to connect to a DSCSUEASC for the first time and how to get it working The ASCII version is supported by a Toolkit software application that is simple to use If you have any other type of device you must use Instrument Explorer to configure the device Note that Instrument Explorer can be used with ASCII devices as well so if you need more complex configuration than DSC Toolkit offers you can use Instrument Explorer This can be downloaded from our website at www mantracourt co uk and is supported by an alternative manual DSC USB 517 180 which can also be downloaded from our website Communications Interface Information DSCUSB devices can connect to a PC by plugging into a USB port and do not require an external power supply as they appear as a single unit load i e they draw lt 100mA Appropriate drivers must be installed which are bundled with the DSC Toolkit These create a virtual serial port allowing the DSCUSB to appear to the PC as a normal COM port device DSC Toolkit DSC Toolkit is a simple configuration tool
15. o weights in the fields marked 1 and 2 Next apply the low weight and allow a settle time Click the Acquire button then apply the high weight After another settle time click the second Acquire button and the calibration is complete 2 Point Certificate Calibration This option lets you calibrate direct from the loadcell manufacturers certificate without having to apply weights to the input Choose 2 points from the loadcell certificate and enter the mV V values and the weights on the certificate or convert the certificate weight to any other engineering unit of your choice click the Calibrate button and the calibration is complete System Zero To remove the current weight on all subsequent readings click the Zero button Click the Remove button to return to displaying the actual weight applied This system zero is stored in the device and remains through power cycling Mantracourt Electronics Limited DSCUSB User Manual 12 Shunt Calibration Click the Turn On Turn Off button to toggle the shunt calibration output The shunt cal internally connects a resistor across the strain gauge bridge This can be used to quickly verify the gain settings of the device Over amp Under range Limits Here you can set limits below and above which the warning indicators will be displayed on the Information Page 13 Mantracourt Electronics Limited DSCUSB User Manual A Click on the icon to open the Logg
16. ser settings a level set in mV V and the maximum number of steps up to 255 Instead of outputting every new value a fraction of the difference between the new input value and the current filtered value is added to the current filtered value to produce the filtering action If this difference is less than the value set in the Filter Level then the fractional amount added each time is decremented until it reaches the minimum level set by FFST i e FFST is the limit of the divisor e g if Filter Steps 10 the fractional part of the difference between the new value and the current filtered value will be decremented as follows 1 1 1 2 1 3 1 4 1 5 1 6 1 10 1 10 1 10 before being added to the current filtered value If a rapidly changing or step input occurs and the difference between the new input value and the current filtered value is greater than the value set in Filter Level then the output of the filter will be made equal to the new input reading i e the fractional amount of the new reading added to the current reading is reset to 1 This allows the Filter to respond rapidly to fast moving input signals When a step change occurs which does not exceed Filter Level the new filtered value is calculated as follows New Filter Output value Current Filter Output Value Input Value Current Filter Output Value Filter Steps The time taken to reach 63 of a step change input which is less than Filter Level is the frequency a
17. st defective material and workmanship for a period of 3 three years from the date of dispatch If the Mantracourt product you purchase appears to have a defect in material or workmanship or fails during normal use within the period please contact your Distributor who will assist you in resolving the problem If it is necessary to return the product to Mantracourt please include a note stating name company address phone number and a detailed description of the problem Also please indicate if it is a warranty repair The sender is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit Mantracourt warranty does not apply to defects resulting from action of the buyer such as mishandling improper interfacing operation outside of design limits improper repair or unauthorised modification No other warranties are expressed or implied Mantracourt specifically disclaims any implied warranties of merchantability or fitness for a specific purpose The remedies outlined above are the buyer s only remedies Mantracourt will not be liable for direct indirect special incidental or consequential damages whether based on the contract tort or other legal theory Any corrective maintenance required after the warranty period should be performed by Mantracourt approved personnel only ISO 9001 REGISTERED FIRM THE QUEEN S AWARDS Fa FOR ENTERPRISE ma AS CE In t
18. t Electronics Limited DSCUSB User Manual Connecting up the Device Simply connect to a spare USB port on the PC using the lead provided in the kit Using the Software The DSC Toolkit automatically detects the connected DSCs so you do not need to worry about baudrates station numbers or COM port numbers If there is only one USB DSC connected when you launch the DSC Toolkit it will be automatically selected and the Information Page will be displayed If multiple devices are detected you will be presented with a list to choose from on the Home Page To connect to a device just click on it in the list and click the Connect button Or just double click the device in the list DSC Toolkit Home Select the device from the list and click Connect Help Serial Number COM Port This Home page is where you select which device to connect to You may have multiple devices connected Detect No device selected Connect App 1 0 16 Drv DLL 1 2 You will then see the Information page If no devices are detected the Connect button changes to Demo If you click the Demo button you can navigate through the software application with no device attached Mantracourt Electronics Limited DSCUSB User Manual 6 Information Page DSC Toolkit Information Here you can view information about the device This shows the reading and any errors relating to the input Serial Number 1000234569 Firm
19. t which values are passed to the dynamic filter set in Measurement Rate multiplied by Filter Steps The table below gives an indication of the response to a step input which is less than Filter Level Of Final Value Time To settle 63 Measurement Rate Filter Steps 99 Measurement Rate Filter Steps 5 99 9 Measurement Rate Filter Steps 7 For example If Measurement Rate is set to 100Hz 0 01s and Filter Steps is set to 30 then the time taken to reach of step change value is as follows Of Final Value Time To settle 63 0 01 x 30 0 3 seconds 99 0 01 x 30 x 5 1 5 seconds 99 9 0 01 x 30 x 7 2 1 seconds Mantracourt Electronics Limited DSCUSB User Manual 16 The following table shows the number of updates x Filter StepsT and the Error that the Filtered Output value will differ from the constant Input Value x FFST Error 1 36 78794412 2 13 53352832 3 4 97870684 4 1 83156389 5 0 67379470 6 0 24787522 7 0 09118820 8 0 03354626 9 0 01234098 10 0 00453999 11 0 00167017 12 0 00061442 13 0 00022603 14 0 00008315 15 0 00003059 16 0 00001125 17 0 00000414 18 0 00000152 19 0 00000056 20 0 00000021 Remember if the step change in mV V is greater than the value set in Filter Level then New Filter Output value New Input Value i e the output jumps to the new input value
20. ware Version 4 00 Device serial number 1000234569 on COM9 App 1 0 16 Drv DLL 1 2 This simply shows a large display and indicates if any error conditions are present by displaying an information box 7 Mantracourt Electronics Limited DSCUSB User Manual The following screenshot shows an Integrity error present DSC Toolkit Information Here you can view information about the device This shows the reading and any errors relating to the input Format Serial Number 1000234569 Firmware Version 4 00 Integrity There is a problem with the integrity of the strain gauge input This may indicate a short or open circuit This is also active when Shunt Cal output is activated Device serial number 1000234569 on COM9 App 1 0 16 Drv DLL 1 2 The error box will disappear once the error is no longer present Clicking the Format button allows you to select a new format for the displayed value By using this you can hide unwanted decimal places Display Format Select the preferrad number of decimal places Just click the required display format in the list Mantracourt Electronics Limited DSCUSB User Manual To select a different device just click the Home icon Home Page DAY Ole 711741 Select the device from the list and click Connect i Help Serial Number COM Port This Home page is where you select which device to connect to You may have multiple devices connected
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