Liquid Volume Dispenser User Manual
Contents
1. at constant Fluid Dispense Accuracy temperature and Temperature 0 C to 65 C flow rate Range Polyethylene nylon polyurethane brass copper mild steel Suitable Tube Fluid Connections 8mm OD push fit Materials 2 USB to serial User Guide USB connection connection Cable Software CD Software and Datasheet not Supplied Water 2 For soft or thin walled tubing tube inserts should be used Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 14 of 17 Deeter Liquid Volume Dispenser User Manual Appendix A Serial Port Settings and Command Structure The serial port settings are 19200 baud 8 data bits no parity bit 1 stop bit Commands have the following structure ignore spaces inserted for clarity 5 CPL P2 ae PA eS where S is the sequence start character S C is the command character A Z case sensitive P1 to Pn are parameters in the range 0 9 and CS is a two byte checksum The checksum is the 8 bit sum of the command character and the parameter characters It is the sum of the ASCII characters not the numbers they represent and is sent as a hexadecimal number represented by two ASCII characters in the range 0 to 9 and A to F All valid commands are acknowledged by echoing back the command character followed by the carriage return character ODh Reports start wit2. Dispenser and makes the Dispenser appear as a standard RS232 device USB Serial Port COM Properties General Port Settings Driver Details F USE Serial Port COME Device type Ports COM amp LPT Manufacturer FTDI Location on USE Serial Converter Device status This device is working properly Ifyou are having probleme with this device click Troubleshoot to start the troubleshooter j Troubleshoot Use this device enable Device usage Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 9 of 17 Deeter Liquid Volume Dispenser User Manual 6 3 Using The Software When started the software will display a drop down list of the available comms ports Select the virtual comms port for the USB device File Tools se ox Help _ _ amp amp The DEETER Group Feerex Liquid Volume Dispenser E Temp Adjustment Warning Beep C Finish Beep E Flow Rate Adjustment Calibration 12 p 12 On initial connection the LVD will fill in the current firmware version and automatically display the current settings for Target Volume etc a Volume Dispenser 4 File Tools Help The DEETER Group Deeter Liqui Comms Pot COM11 plume Dispenser ARILD V1 38B Close Comms v Warning Beep V Temp Adjustment Target Volume Dispensed Volume Tempe
3. Low voltage operation makes the dispenser safe to use In damp environments or if liquid is spilled A USB connector is provided on the right side of the case for connection to a PC Installation of the PC software supplied with the Dispenser is described in section 6 2 Volume Accuracy A calibration method allows fine adjustment of the delivered volume and can considerably reduce the size of any dispense error One or two measured dispenses into a measuring vessel or weighed should be performed to enable calculation of a percentage error The result is then entered in the Calibration Menu see section 4 5 with adjustments down to 0 1 Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 3 of 17 Deeter Liquid Volume Dispenser User Manual Repeated accuracy should be better than 99 if the flow rate and liquid temperature remain constant Recalibration is recommended from time to time particularly if flow rate and temperature are changeable The LVD has options to compensate for varying flow rate and temperature when used for dispensing water see section 4 6 Compensation Option Menu The adjustments are a best fit for a typical LVD and will not provide the accuracy that can be achieved at constant flow rate and temperature but will reduce any error caused by these variables With water the LVD is most consistent at flow rates from 2 to 5L minute and at temper
4. The DEETER Group Liquid Volume Dispenser Deeter Liquid Volume Dispenser User Manual Table of Contents Introduction 1 2 4 1 4 2 4 3 4 4 4 5 4 6 6 1 6 2 6 3 6 4 7 Appendix A Serial Port Settings and Command Structure Installation ssnenonenennnnenensrnrerrnrrrrrnrenrrrrrnrnrerrnrrrnr VOUMEACOUT ICY sr rediresr a a EEIE ETENA NERS Operator CONTIOIS ccccce eee eeeeeeeeeeeeeeessesueeeteagees Operating StaleS i ae rieanenatewneusdueeededaued pr EEEN Ni REAGY Ar EE AEE DISPENSI O eae E E acecnninaeteandaes Manual DISDENSING ccccccecsee eee eeeeeeeeeeeeeeeeeenneeeeas Audio Option SettiNG cccccce cece eee e eee eeeeeeeeeeeneeeeeeas Cap raon Mon jiicsitetententseutevctestianseseseteueseence wens Compensation Option Menu ccccceeeeeeeeseeeeeeeeeees Serial Communications Control sssssessssrsrererrrrrrsrso PO OI WV a Oera E rss teen E TE Software Installation c ccc cccccse cece eee eeeeeeeeeeeeeeeeees UoD DIVO S vaio saree cnce ara E Using The Software cccceeececeeeeeeeeeeeeeeetenaeeeeseges DAGNO UC DIOD Y seer e menaced SpecificationS sssssseresrurerrrrrrnrrrrrrnrrrrrrrrsrrrrrrnrrrnro Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 2 of 17 Deeter Liquid Volume Dispenser User Manual Introduction The Liquid Volume Dispenser LVD is
5. atures above 20C and accuracy should be within 3 over that range 3 Operator Controls A liquid crystal display shows the selected volume and progress during dispensing Operator controls consist of three push button switches inscribed with the following symbols SYMBOL A el DESCRIPTION UP DOWN ENTER 4 Operating States 4 1 Ready After power up and between dispensing states the display shows READY on the top line and the selected volume on the bottom line Press A to increase the volume Hold the button to rapidly increase the volume The maximum setting is 100 00 litres Press V to decrease the volume Hold the button to rapidly decrease the volume The minimum volume setting is 0 10 litres Any change to the volume setting is saved to non volatile memory when dispensing commences thus powering off and back on will recover the previous setting Press to start dispensing Hold the button for 3 seconds to select user options see Option Setting and Calibration Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 4 of 17 Deeter Liquid Volume Dispenser User Manual Hold the button and then to manually deliver a dose see Manual Dispensing 4 2 Dispensing Dispensing can be started by pressing from the Ready state or by computer command The display will show the flow rate the delivered volume and the target volume Pre
6. character V will report the target volume same as the T command but with V prefix W set Warning beep off on 0 1 A after the command character W will return the current status of the Warning Beep X set calibration percentage 120 to 120 Sets the percentage calibration adjustment in units of 0 1 The first parameter must be or A after the command character X will report the calibration same as the Y command but with X prefix Y report calibration This command will return the present calibration in the form Y lt S gt lt xxx gt lt CR gt where lt s gt is the sign character or and lt xxx gt is the adjustment in 0 1 units Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 17 of 17
7. designed to deliver a measured volume of liquid at the press of a button In normal use the operator selects a volume presses a button and the LVD delivers the required volume without further operator intervention The volume is easy to select and is retained in non volatile memory for repeat operation Volumes between 0 10 litres and 100 00 litres can be selected in increments of 0 01 litres A simple calibration method enables the LVD to repeatedly dispense accurately measure volumes There are options to allow automatic adjustment of the calibration when dispensing water with varying flow rate between 0 5 L minute and 5 0L min or with changing temperature 0 to 65 Celsius Wetted surfaces are Nylon 66 GF30 PTFE Buna and acetal making the LVD Suitable for a wide range of fluids The Dispenser can be connected to a PC for remote control and monitoring and is supplied with an easy to use software application 1 Installation The Dispenser has two John Guest Speedfit push fit connectors on the bottom side of the case for fluid in and out The fittings take a tube outside diameter of 8mm and can be used with polyethylene nylon polyurethane brass copper or mild steel tubing Tube inserts should be used for soft or thin walled tubing The use of an inline liquid filter is recommended to prevent debris entering the unit The Dispenser is provided with a 12VDC mains adapter that plugs into a socket on the left side of the case
8. e autorun exe file Once running you will be presented with the following The Deeter Group Liquid Dispenser Software Install Liquid Dispenser User Guide 2 d Hovering over an item with the mouse will display a message explaining what will happen when that item is selected Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 8 of 17 Deeter Liquid Volume Dispenser User Manual The Liquid Dispenser application software uses Microsoft NET Framework v3 5 The installer will attempt to download and install this software from Microsoft so you must be connected to the internet when the application is first installed You must also agree to Microsoft s terms and conditions to use NET Framework The application has an unknown publisher i e Deeter After installation the application can be run from the Start button Start All Programs Deeter Electronics Ltd LiquidVolumeDispenser Liquid Volume Dispenser 6 2 USB Drivers Connect the USB cable and ensure the Dispenser is powered up The first time this connection is made the Windows driver for this USB device must be installed either by plug and play if available or by downloading the driver Drivers for a wide range of operating systems can be downloaded free of charge from www ftdichip com The Virtual COM Port VCP driver is required for use with the PC software supplied with the
9. h the command character and are terminated with carriage return Invalid commands sequences with parameters outside the permitted range or incorrect checksums will return B and carriage return The S character will clear any previous partial command sequence to start a new one Command List Commands with parameters ranges shown in brackets are A Auto report off on 0 1 minutes 0 9 seconds 0 59 If auto report is enabled a report of the dispensed volume flow rate temperature and mode will be sent at regular intervals while dispensing Reports will stop after the target volume has been reported Reports are of the form A lt XXXXX gt lt yyyyy gt lt zZzz gt lt m gt lt CR gt where A is the command character A lt xxxxx gt is the dispensed volume in centilitres 5 bytes lt yyyyy gt is the flow rate in centilitres per minute 5 bytes lt zzz gt is the temperature 3 bytes lt m gt is the Mode see the Report Mode command and lt CR gt is the carriage return character ODh Each parameter is separated by a colon The temperature is in units of 0 5C with a zero at around 21C see K command For example the number 415 would represent 20 5C 41 5 21 20 5 C report dispense Completion off on 0 1 If enabled a report will be sent when the target dispense volume has been reached The report is of the form C lt x gt lt CR gt where lt x gt is 0 if the flow rate has been outside lim
10. h uses temperature difference but absolute temperatures can be displayed by the PC software and this command enables calibration of the displayed temperature A after the command character K will return the current zero offset in the form K lt xx gt lt CR gt where lt xx gt is the offset temperature in C L set Flow Rate Adjustment off on 0 1 A after the command character L will return the current on off status of the Flow Rate Adjustment M report Mode This will return M lt n gt lt CR gt where M is the command character M and lt n gt is a number from 1 to 4 to indicate the current status of the dispenser 1 Ready 2 Dispensing 3 Paused 4 The LVD is under operator control from the keypad e g manual dispensing option setting etc Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 16 of 17 Deeter Liquid Volume Dispenser User Manual N report version Number This will return the firmware version number e g LVD V1 1 P Pause This command will pause the current dispense allowing it to continue later R Restart This command will restart a paused dispense T report Target volume This command will return the target volume in the form T lt xxxxx gt lt CR gt where lt xxxxxx gt is the volume in centilitres V set Volume 00010 10000 Sets the target volume in centilitres A after the command
11. inimum volume setting is 0 10 litres The Target Volume can be entered directly into the box clicking on Up or Down Please note the maximum and minimum volumes are 100 00 and 00 10 e a Press Stent to start dispensing Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 12 of 17 Deeter Liquid Volume Dispenser User Manual 6 4 Diagnostic Display m Se Wi This display shows the commands flowing between the Liquid Dispenser and the PC Software via the serial connection and is there for diagnostic purposes only Appendix A provides a list of the commands and reports that may be seen If you find that you are having any problems with the LVD software please copy and paste the contents of the Diagnostic Display into an email and sent it to Sales deeter co uk along with a description of the problems that you have noticed this will allow us to see what was happening at the time Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 13 of 17 Deeter Liquid Volume Dispenser User Manual 7 Specifications 10 15VDC 500mA Power supply 12VDC mains socket adapter supplied 175mm x 125mm x 78mm OL 100 Lin 0 1 0 01 L steps Dispense Volume Flow Rate Range 0 5 5 0 litres per minute Minimum inlet Inlet pressure at 20 C up to 10 Bar pressure rating at 65 C up to 4 Bar 1
12. its for accurate dispensing and 1 if the flow rate has kept within limits Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 15 of 17 Deeter Liquid Volume Dispenser User Manual D report Dispense volume This will return the present dispensed volume in the form D lt xxxxx gt lt CR gt where lt xxxxx gt is the dispensed volume in centilitres E set End beep off on 0 1 A after the command character E will return the current status of the End Beep F report Flow rate This will return the present flow rate in the form F lt xxxxx gt lt CR gt where lt xxxxxx gt is the flow rate in centilitres per minute Note the maximum flow rate Should be less than 5 litres per minute so the first two digits should always be 0 G Go This command will start a dispense H Halt This command will terminate a dispense I set Temperature Adjustment off on 0 1 A after the command character 1 will return the current on off status of the Temperature Adjustment J Temperature This will report the temperature in degrees C to the nearest 0 5C The temperature is preceded by a or sign and includes a decimal point before the final digit O or 5 K set thermistor zero offset temperature 00 99 The default zero offset for the thermistor is 21C The absolute temperature is not required for error compensation whic
13. lay shows the target volume while the bottom line continues to show the added volume The LVD will remain in Manual state while is held If is released the LVD will remain in Manual state while is pressed and for 4 seconds after is released Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 5 of 17 Deeter Liquid Volume Dispenser User Manual 4 4 Audio Option Setting The Audio Option Menu is entered from Ready state by pressing and holding for 3 seconds There are two audio options FINISH BEEP and WARNING BEEP Pressing N will toggle the FINISH BEEP option between ON and OFF When ON is selected a long beep will be sounded to indicate the target volume has been reached at the end of Dispense state Pressing W will toggle WARNING BEEP between ON and OFF When ON is selected short beeps will be heard if the flow rate is outside the limits for accurate dispensing Both options are saved to non volatile memory so are restored to the operator s preference on power up Exit the Audio Option Menu by pressing This will lead to the Calibration Menu 4 5 Calibration Menu The Calibration Menu is entered from the Audio Option Menu by pressing The display will show the current calibration value between 12 0 and 12 0 Negative values will reduce the volume delivered and positive numbers will increase the volume Pressing AN will i
14. lt state of these options is enabled Temp Adjustment By default the LVD will add a percentage to the dispense volume in accordance with the temperature attempting to compensate for the typical affects of water temperature on dispense accuracy between OC and 65C Flow Rate Adjustment By default the LVD will compensate for the rate of flow Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 11 of 17 Deeter Liquid Volume Dispenser User Manual Note that these options compensate for the characteristics of water and may not be appropriate for other liquids Both compensation options add to the dispense volume so when first enabled the calibration percentage may need to be reduced or made more negative E Warning Beep Temp Adjustment Target Volume Dispensed Volume Temperature Finish Beep E Flow Rate Adjustment 001 00 L Calibration Status Flow Rate A READY 002 COTES The calibration percentage can be set between 12 and 12 in units of 0 1 Use the arrow keys to make fine adjustments C Warning Beep Temp Adjustment arget Volume Dispensed Volume Temperature C Finish Beep Flow Rate Adjustment 001 00 L Calibration atu Flow Rate 12 p 12 READY COE SIC The Target Volume panel shows the volume to be dispensed Press A to increase the volume The maximum setting is 100 00 litres Press V to decrease the volume The m
15. me so when first enabled the calibration percentage may need to be reduced or made more negative Both options are saved to non volatile memory and are restored on power up Exit the Compensation Option Menu by pressing to return to the Ready State 5 Serial Communications Control The Dispenser has a serial communication option to enable automated control and monitoring by computer Communication is via USB and requires a cable not supplied with a type B connector i e a typical USB printer cable The PC software supplied with the Dispenser replicates the operator controls and makes it easier to access options settings and view progress during dispensing For those who wish to develop their own PC control and monitoring software details of serial port settings and the command structure are given in Appendix A Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 7 of 17 Deeter Liquid Volume Dispenser User Manual 6 PC Software The CD Contains Liquid Dispenser Help chm html Help File Deeter_ Liquid Dispenser pdf The Liquid Dispenser Manual AdbeRdr940 en_US exe Adobe Acrobat Reader installer Install Setup exe Folder containing the Liquid Dispenser Setup and installer 6 1 Software Installation After insertion into your CD DVD drive the CD should auto boot If not double click the CD Drive within Explorer to start the CD or double click th
16. ncrement the calibration percentage by 0 1 Holding the button will rapidly increase the percentage Pressing V will decrement the calibration percentage by 0 1 Holding the button will rapidly decrease the percentage Pressing saves the calibration value to non volatile memory exits the Calibration menu and enters the Compensation Option Menu 4 6 Compensation Option Menu The Compensation Option Menu is entered from the Calibration Menu by pressing i There are two compensation options FLOW ADJ UST and TEMP ADJ UST Pressing N will toggle the FLOW ADJ UST option between ON and OFF When ON is selected the LVD will add a percentage to the dispense volume that changes with Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 6 of 17 Deeter Liquid Volume Dispenser User Manual the flow rate attempting to compensate for typical affects of flow rate on dispense accuracy for water over the full flow rate range of 0 5L min to 5L min Pressing Y will toggle TEMP ADJ UST between ON and OFF When ON is selected the LVD will add a percentage to the dispense volume that changes with temperature attempting to compensate for the typical affects of water temperature on dispense accuracy between OC and 65C Note that these options compensate for the characteristics of water and may not be appropriate for other liquids Both compensation options add to the dispense volu
17. rature V Finish Beep V Flow Rate Adjustment 00 335 L Calibration Status 12 al 12 READY Flow Rate CESS Diagnostic Display The Status will change to Ready after displaying the current Firmware version Deeter Electronics Limited Deeter House Valley Road Hughenden Valley High Wycombe Buckinghamshire HP14 4LW Page 10 of 17 Deeter Liquid Volume Dispenser User Manual Warning Beep Temp Adjustment Target Volume Dispensed Volume Temperature Finish Beep Flow Rate Adjustment 001 00 L Calibration Status Flow Rate 12 p 12 READY a B O The following options are adjustable E Warning Beep Temp Adjustment Target Volume Dispensed Volume Temperature Finish Beep Flow Rate Adjustment 001 00 L Calibration Status Flow Rate 12 5 12 BERDY 003 A Vv START a These two check boxes allow you to Enable and Disable the Finish Beep and Warning Beep from the Liquid Dispenser Finish Beep A simple Beep upon completion of the dispensing of liquid Warning Beep This Beep is only heard when the flow rate goes above or below the limits for accurate dispensing Warning Beep Temp Adjustment Target Volume Dispensed Volume Temperature Finish Beep E Flow Rate Adjustment 001 00 L Calibration Status Flow Rate m B O a These two check boxes allow you to Enable and Disable the Automatic adjustments for Flow Rate and Temperature The defau
18. ssing will stop delivery with PAUSED shown on the display Pressing again will resume delivery Holding the button for 3 seconds will cancel delivery and return to Ready state If the flow rate falls below 0 5 litres minute the word UNDER will flash alternating with the flow rate At very low flow rates the word UNDER will remain constant A Short beep will sound every 5 seconds if the Warning Beep option is enabled If the flow rate rises above 5 00 litres minute the word OVER will flash alternating with the flow rate At very high flow rates the word OVER will remain constant A Short beep will sound every 5 seconds if the Warning Beep option is enabled When the target volume is reached the LVD will automatically return to Ready state The buzzer will sound for 1 5 seconds long beep if the Finish Beep option is enabled 4 3 Manual Dispensing Press and hold the button and then press to gain manual control of the dispense valve This state may be used for adding a top up after normal dispensing limited to a maximum of 10 00 litres The press of the AN button will temporarily change the volume setting but the previous setting will be restored immediately Manual Dispensing state is entered Whenever is pressed the dispense valve will open The flow rate will be shown on the top line of the display and the additional volume of liquid will be shown on the bottom line When is released the top line of the disp
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