Palmer Environmental MCD MicroCorr Digital Leak Detector Base Station User Manual MicroCorr 6 short form manual

Palmer Environmental Ltd MicroCorr Digital Leak Detector Base Station MicroCorr 6 short form manual

User Manual

1 MicroCorr Digital Users GuideTy Coch HouseLlantarnam Park WayCwmbranNP44 3AWUnited KingdomTel: +44 (0) 1633 489479Fax: +44 (0) 1633 877857Email: info@palmer.co.ukInternet: www.palmer.co.ukMcorr Dig UGIssue 5b August 2003Based on SW-042-01-109aBased on FW-042-02-107a
2MicroCorr Digital Users GuideIntroduction and Features.......................................................................................................... 3New features.............................................................................................................................. 3Operational Benefits .................................................................................................................. 4Principle of Correlation .............................................................................................................. 5System Overview....................................................................................................................... 6Standard system configuration .................................................................................................. 6Optional accessories ................................................................................................................. 6Fully Digital Correlation ............................................................................................................. 7Features of the correlator unit ................................................................................................... 8Features of the Out Stations...................................................................................................... 9MicroCorr® DIGITAL correlator unit operational features ........................................................ 11Key functions ........................................................................................................................... 11Using the MicroCorr Digital Correlator................................................................................... 12BATTERY WARNING.............................................................................................................. 12Step 1: Charging and installing batteries................................................................................ 12Step 2: Set up and deployment of Out Stations ..................................................................... 14Step 3: Switching on the Correlator........................................................................................ 15Correlating ............................................................................................................................... 16Main Menu ............................................................................................................................... 17Correlate ..................................................................................................................... 17File .............................................................................................................................. 17Regression Analysis ................................................................................................... 19Set-up ......................................................................................................................... 22Test and Service......................................................................................................... 24Other System Options ................................................................................................ 26Correlation Screen................................................................................................................... 27Pipe data..................................................................................................................... 28Zoom........................................................................................................................... 32Peak Suppression Screen .......................................................................................... 33View Settings .............................................................................................................. 34Calculate Velocity ....................................................................................................... 35Filters ....................................................................................................................................... 37Program upgrade (Software and Firmware)............................................................................ 40Technical Specification............................................................................................................ 43Warranty .................................................................................................................................. 45Patents..................................................................................................................................... 45
3MicroCorr Digital Users GuideIntroduction and FeaturesMicroCorr® DIGITAL is the latest model of the world’s leading correlator brand (over 4,000MicroCorr® units in use worldwide) but is the first fully digital system. This enables it toachieve performance levels well in excess of previous analogue-based systems, withimportant benefits to the user.• Totally digital system• Superior leak detection performance on all pipe materials and sizes• Quick and easy to use, especially for less experienced operators• Automatic parametric filtering (APF)• Ergonomically designed – lightweight, compact system• 1/4 VGA colour display• Software upgrades via Internet web site• Optional third Out Station for velocity measurement and rapid survey• Select dedicated or PC-based modelsNew features• Transceiver communication enables all system functions to be controlled centrally,enabling quicker deployment• Expert system leak detection algorithms eliminate transient, non-leak effects• Tricorrelation (optional third Out Station/sensor) automatically calculates site-specific velocity• Data replay function allows immediate post-processing or off-line correlation• Software upgrades downloaded directly from www.palmer.co.uk• Results transferable into Windows PC for post-processing or exportBest in the fieldLeak detection staff require a high performance correlator in order to maximise theirproductivity (number of leaks found per hour) and minimise the incidence of “dry” holes, whenexcavation reveals no leak to be present. However, because it is used constantly in the field,the correlator must also be robustly designed. The Control Unit and Out Station are injection-moulded housings, providing maximumstrength and durability. They are designed to IP65 protection and to survive a 1 metre drop.The Control Unit incorporates an external antenna and a magmount antenna (optional extra)may be connected for longer correlation distances if the Control Unit is vehicle-based.External antennae are used with the Out Stations.All connectors are military specification and cables are fitted with strain relief to protectagainst fatigue damage. The complete system, comprising control unit with two Out Stationsand sensors, is easily carried by one person. The Out Stations have been designed to bevisible over typical correlation distances and allow back-to-back portability.
4Operational Benefits• Pinpoints a higher percentage of leaks...• ...and a significantly higher percentage of “difficult” leaks (plastic pipes, trunk mains, lowpressure situations)• Fewer “dry” holes reduces excavation costs• Improved productivity – more leaks found per hour• Easier to use – less training required• Improved reliability with less downtime• Lightweight and robust• Easily integrates into Company-specific reporting• New software versions available from www.palmer.co.uk• Ground microphone “foot” option to improve versatility• Permalog “Patroller link” option to improve versatility• Designed for easy portabilityFully automatic• Immediate correlation – switch on and go (enter pipe details later)• Automatic parametric filtering (APF)• Velocity measurement using (optional) third Out Station/sensorEasier to Use• Colour graphical user interface• Intuitive display and operation• Quick correlation• Batteries field-changeableReliability to inspire confidence• All functions self-calibrated automatically on power-up• In-built power management• Increased battery life – batteries rechargeable and field replaceable
5Principle of CorrelationIn the "classic" correlation process, two sensors are deployed on pipe fittings ("dry"connection) or connected to hydrants ("wet" connection). The sensors are positioned eitherside of the suspected leak position. Noise is created by the leak as it escapes from the pipeunder pressure. This noise is conducted in both directions away from the leak through thepipe wall (as minute vibrations) and through the water column (as a pressure wave). The leaknoise travels at a constant velocity (V), which depends on the material and diameter of thepipe, and arrives first at the sensor nearer the leak. The arrival time at each sensor isregistered. The difference (Td) between the two arrival times, combined with knowledge of thepipe type and length, enables the leak position to be calculated by the correlator. Dependingon the environmental conditions, accuracy of leak pinpointing can be to within centimetres.Principle of correlation: L = ½ (D-(VxTd))Leak positionV x Td L LD
6System Overview Standard system configurationThe standard MicroCorr Digital system comprisesthe following equipment:-1. Control Unit2. External Antenna for C.U.3. Carry strap for C.U.4. Red Out Station5. Blue Out Station6. 2 x External Antennae for O/S7. 2 x Digital Sensors with cables8. Headphones (for use with C.U. or O/S)9. MicroCorr Digital PC communicationscable10. Mains power supply/charger for 2 OutStations11. Mains power supply/charger for ControlUnit12. 12V DC power/charge lead for C.U. orO/S13. Operating manualOptional accessories1. PC software (for upgrades, diagnostics, PC interface)2. Spare battery pack with charge lead3. Vehicle magmount antenna with cable4. Digital hydrophones with cables (set of 2)5. Leak noise CD6. Digital microphone foot7. Tripod or ground plate for accelerometer (magnetically attached)8. Printer cable to standard Epson/HP printer9. Rechargeable colour printer with batteries10. “Tricorrelation” 3rd (yellow) Out Station and digital sensor, with antenna andcharge lead11. Measuring Wheel12. Soft carry bags for control unit and Out Station(s)13. Hard transit case for all system components.14. Permalog Patroller radio unit
7Fully Digital CorrelationDigital sensor• New sensor with improved sensitivity to low frequency noise (for plasticand large diameter pipes and low pressure situations) - down to 1.0Hz• Wider dynamic range than any previous sensor - can distinguish leaknoises much quieter than previous sensors• True 16 bit Σ∆ ADC with 10kHz sampling• Immediate digitisation of received signal• Low noise electronics with digital protocol eliminates interference• Longer sensor cables possibleDigital radio Out Station• Two-way communication with control unit using transceiver technology• Virtually no data loss, interference or distortion of the transmitted signal • Single radio frequency for all Out Stations• Improved dynamic range over analogue radios• High speed data transmission using transformcoding techniques• No directional restrictionsNew digital sensor with enhanced low frequencysensitivity
8Features of the correlator unitLarge backlit colour displaywith protective screenTactile rubber keypadRubber hand gripCarry-strap attachmentExternal antenna / magmountconnectionHeadphone / chargerconnectorInjection moulded housingSensorconnectorCommunicationsconnectorBattery compartment(accessed from underside)
9Features of the Out Stations The Out Station consists of a transmitter unit (red, blue – or optionally yellow) and a digitalsensor unit complete with cable to connect to the transmitter. Its design incorporates sensorstowage and cable wrap.Sensorstowageat rearFlashinghazardlightsCable withstrain reliefDigitalsensorHighstrengthmagnetCable wrapBattery compartment(accessed from underside)Injection mouldedhousingMilitaryspecificationconnectorsDetachableantenna
10Rear of transmitterOn/Off switch with integral flashing LEDSensor stowageTop view of transmitter – connector covers removedHeadphones / charger connectorCommunications connectorSensor connectorAntenna connectorTop view of transmitter – connector covers fitted
11MicroCorr® DIGITAL correlator unit operational featuresThe unit performs accurate leak noise correlations for leak positioning and velocitymeasurement. It has listening and surveying facilities and its stored information can bedownloaded to a computer or printer.Key functionsKeypadfunctions MicroCorr Digital has an alpha-numeric keypad, similar to that of a mobile phone including afull stop, cancel, enter and up/down arrows. Navigation through the menus usescombinations of these keys. • UP/DOWN arrows will select items from within a list• Numeric to select menu item• Enter to accept input• Cancel to move back a menu level.1abc2def3CANCELjkl5ghi4mno6pqrs7tuv80wxyz9.On / OffbuttonUp arrowDown arrowEnter button
12Using the MicroCorr Digital CorrelatorBATTERY WARNINGAll three batteries supplied are rechargeable lithium ion. Do not short circuit thesebatteries. Any misuse of these batteries may result in explosion or fire. They must notbe used in any other application or used with any other equipment. Onlybatteries/battery-packs supplied by Palmer Environmental must be used. The Palmer sealed battery packs contain circuitry to prevent overcharging andoverdischarging.Step 1: Charging and installing batteriesThe battery packs for the correlator and the Out Stations are supplied as separate items andwill need to be fully charged although they are supplied quarter charged. Two different battery chargers are supplied: one for the correlator and one for both OutStations to be charged simultaneously. All three batteries are identical and areinterchangeable. Charging for all batteries takes up to 4 hours from flat.Charging the Correlator1. To charge the correlator battery, the battery must first be fitted inside the correlator.2. To insert the battery pack into the correlator unscrew the three screws underneaththe unit, remove the cover and packing foam and connect the battery pack, place in thebattery compartment, refit the packing foam, and then replace the cover with the threescrews. 3. Connect the charge lead from the correlator charger to the headphone / batterycharge connector on the back of the correlator. Plug the charger unit into the mains supplyand switch on. The correlator will turn itself on and display the battery indicator as charging onthe correlation screen.Unscrew these3 quick-releasescrews toremove batterycompartmentpanel.
134. To charge the Out Station batteries they must first be installed. To do this remove thescrews from the battery compartment on the bottom of each Out Station, connect the batterylead to the connector and insert the battery. Refit the screws and attach the battery chargelead to the headphone / charge connector on the top of the transmitter. The Out Stations willturn themselves on to charge.Remember to turn control unit and Out Stations off after disconnecting charger cables.Although the batteries are rechargeable, they may eventually need to be replaced. Onlybatteries configured to the correct specification and type must be used. These are availablefrom Palmer Environmental.TWO OUT STATIONS CONNECTED VIA CHARGER TO MAINSUnscrew these2 quick-releasescrews toremove batterycompartmentpanel.
14Step 2: Set up and deployment of Out Stations1. Once the batteries have been charged and installed in the correlator and the OutStations, connect the antennae, connect a sensor cable and sensor to each OutStation. Switch on each transmitter by pressing the On / Off button on the back. 2. Transmitter switch functionsTo switch the transmitter on, press the switch on the rear of the transmitter oncemomentarily. The beacons will flash once.To switch the flashing beacons on, press the switch momentarily again.To switch the flashing beacons off, press the switch momentarily once more.To switch the transmitter off, press the switch and hold it in for at least 2 seconds.The beacons will flash three times before the Out Station turns off.3. Green LED functionsThe switch incorporates a green LED, which provides the following functions:-When lit constantly the transmitter is charging.When flashing rapidly, the transmitter battery is almost fully charged.When flashing steadily, the transmitter is switched on and performing normally.When there is a long flash this indicates the battery is discharged and requirescharging.Deploy each sensor on a water pipe fitting either side of the suspected leak position. Thesensor has a strong magnet that will enable it to remain in position on steel / iron fittings.Always try to make a debris free contact between sensor and fitting for the best possibleresults.To check sensors are working correctly, connect sensors as normal to Out Station. Connectheadphones to the Out Station and listen while running your finger over sensor magnet. Aclear crisp noise should be heard.
15Step 3: Switching on the CorrelatorSwitch the correlator on by pressing the On/Off switch momentarily. A number of systemtests are carried out on power up to ensure the correlator is fully functional. After a fewseconds the main correlation screen will appear on the display as shown below. Note, this isthe default screen on start-up to enable the operator to start correlating immediately. TheMain Menu screen is accessed by pressing Cancel. To switch the correlator off, press the On/Off button and select 2, to switch offTo turn off the display only, press the On/Off button and select 1, to put into standby. (Ifthe correlator is not then used for 2 hours it will switch off). To reactivate the screen, press theOn/Off button again.The top menu bar on the correlate screen shows information for each sensor by displaying inthe relevant colour (except Yellow appears black)Indicates radio signalis transmittingIndicates radiopower settingIndicates sensorconnected to OutStationIndicates batterycharge levelDate and timeIn this situation the Red andBlue sensors are being used,they have communicationwith the Base unit ok, usinglow powerSpace where YellowSensor informationwould be displayed ifattachedCorrelating function optionsControl unitinformation
16CorrelatingThe screen shown on page 15 is the first screen that appears on the control unit when it isswitched on. Once the ENTER key is pressed the system will begin to correlate. Correlationcan be stopped by pressing the ENTER key again. This can be used for quick surveys without having to input any pipe data.If the Enter key is pressed the control unit will start to correlate as shown below.Press ENTER to stop correlation, to return to correlator function optionsThere is an option to select either the Correlate screen or the Main Menu screen as the firstscreen to appear after turning on. This can be selected by using the Set-up screen (option 4)from the Main Menu. Date and time changes tothe run time of thecorrelationTime delaySignal toNoise RatioScrolling arrowsshows correlationis in progress
17Main MenuCorrelateSee previous page for quick correlation instructions or Correlation Screen section for more indepth instructions.File Enables the user to load previously saved files or save a current correlation. The control unitcan store approximately 30 files.
18Press 1(Save) The following screen is displayed. The current correlation information detailscan be typed and saved.Press 2(Load) The saved correlation will be displayed. Arrow over the required saved file andpress 2.From a loaded file the control unit can undertake post correlation. Correlating functions suchas pipe data, filters and peak suppression can be changed on the loaded data without havingto return to site to re-correlate. Using new information may correlate a different result.Press 3(Delete) Deletes a previously saved file. Use the arrow keys to highlight the file fordeletion and press 3.Press 4(Properties) Displays file information and comments, when the file was saved. Usethe arrow keys to highlight the file to view and press 4.Loaded filename isdisplayedin green
19Regression AnalysisRegression Analysis provides an additional way of pinpointing leak positions by using a set ofcorrelation results, rather than an individual correlation result. This also provides a way ofmeasuring an accurate velocity.The time delay / distance relationship of the correlation is linear, as the distance between asensor and the leak noise increases, the time taken for the sound to reach the sensorincreases proportionally with the distance. For example, if you move the sensor twice as faraway, the sound will take twice as long to reach it. It is this linear relationship that makes itpossible to predict values for varying time delays / distances when using a set of correlationresults.Before the regression analysis feature can be used, correlation’s must have been saved onthe control unit. For an accurate result it is recommended to save three correlation’s, butobeying the following two rules :-- One of the sensors must remain static during the collection of data. Which of the sensorsdoes not matter.- The pipe material and diameter must be constant for each of the correlation results. Thisis validated by the control unit.Red Blue Position1Blue Position2Blue Position3Correlation Result 1Correlation Result 2Correlation Result 3Press 3 (Regression Analysis) After correlation results have been saved. Press 1 to Add aresult, the file screen will appear, select the first correlation result saved.The control unit will then ask for the “Static Out Station” colour. The control unit will store thematerial and diameter of the first correlation result and compare with the next results to beadded, this ensures these details remain constant.A regression analysis graph will appear showing time delay and distance. A cross will appearon the graph plotting the first correlation result.
20Then press 1 to add the second correlation result. A second cross will appear and a line willpass through both. A result will be given on the leak position and velocity, but we recommendthe user add a third result for a more confident result.Then press 1 to add the third correlation result. A third cross will appear and a best fit line willpass through or near the three crosses. The result of the leak position and velocity will bedisplayed under the graph.
21Press 2 (Remove / Restore) Allows you to select a suspicious correlation for removal. Afterpressing 2, use the arrow keys to select the cross on the regression graph for removal (a boxappears around the selected cross) then press ENTER.Press 3 (Load data) Retrieves previously stored regression analysis graph results.Press 4 (Save data) Saves the current regression analysis graph results.Press 5 (Delete) Enables the deletion of saved regression analysis files.Press 6 (Information) Displays correlation information. After pressing 6, use the arrow keysto select the cross on the regression graph for information to be displayed (a box appearsaround the selected cross) then press ENTERPress 7 (Remove all data) Removes all data currently being used on the regression graph,you will be prompted to verify your selection.Press 8 (Static sensor) Allows you to change the colour of the static sensor.
22Set-upPress 1(Correlate on start-up) Toggles between YES and NO. If set to YES, the control unitwill go straight to the correlate screen after turning on. If set to NO, the control unit will gostraight to the Main Menu after turning on.Press 2(Default filters) Toggles between CLEAR and RETAIN. If set to CLEAR, in surveymode, the filters will clear each time a new correlation is processed. If set to RETAIN, insurvey mode, the filters will retain a set filter setting (set by the user) for every correlationprocessed.Press 3(Survey mode range) Toggles between 0.8, 2.4 and 4.0 seconds. Each of thesevalues provides the time delay range over which the correlator will correlate, where the timesin seconds shows twice the range. For example, over longer distances the 4.0 second rangeshould be used to give +2 seconds to –2 seconds. If entering pipe data, the survey moderange automatically defaults to the appropriate setting.Press 4(Correlation sensors) Toggles between the pairs of sensors to be used. Red-Blue,Red-Yellow, Blue-Yellow, Base-Red, Base-Blue and Base-Yellow.Press 5(Radio Mode) Toggles between HIGH power and LOW power. LOW power can beused over shorter distances and HIGH power over longer distances or areas where a signalcan be interrupted by the environment. The correlator will always default to LOW power whenturning on.
23Press 6(Power Saving)Press 1 to toggle the System power off between NEVER and 5, 10, 15, 20, 25, 30, 35, 40, 45,50, 55 and 60 minutes duration.Press 2 to toggle the Backlight off between NEVER and 5, 10, 15, 20, 25, 30, 35, 40, 45, 50,55 and 60 minutes duration.Press 7(Display set-up)Press 1 to incrementally decrease the screen brightness.Press 2 to incrementally increase the screen brightness.Press 3 to incrementally decrease the screen contrast.Press 4 to incrementally increase the screen contrast.Press 8(Control beacons)Press 1 to switch On the flashing beacons on the transmitters.Press 2 to switch Off the flashing beacons on the transmitters.Note. The beacons should bechecked when switched on from thecontrol unit as they will only switch onif they are within range to pick up thesignal.
24Test and ServicePress 1(Restore default pipe data) Wait a few seconds and the default pipe data will berestored to the control unit.Press 2(Units are Metric) Toggle between METRIC and IMPERIAL measurement units.Press 3(Time is in milliseconds) Toggles between MILLISECONDS and SECONDSPress 4(Using HP printer) Toggle between HP and EPSON printer.Press 5(Language) Select the required language by using the arrow buttons.
25Press 6(Set clock) Set the clock according to the user preferred format.Press 7(Debug Messages are Off) Toggles between ON and OFF. This should normally beset to OFF and is normally only used during fault diagnosis.Press 8(Information) Connect sensors to Out Stations and turn on before pressing 8. Thisdisplays the current firmware and software version currently installed on the MC Digital.
26Press 9(Diagnostics) Displays a series of numbers. This is only used during fault diagnosisOther System OptionsThe MC Digital is designed for versatility. Pressing 1 will activate the Permalog Patroller Link,changing the MC Digital into a Permalog Patroller. (This is only possible if the Patroller Linkradio has been purchased, not fitted as standard)
27Correlation ScreenA dashed cursor line shows the position of the largest peak (best result). The dashed cursorline can be moved once the correlation has been stopped, by using the arrow keys. Movingthe dashed cursor line alters the correlation distance.This screen shows the result of a correlation where the position of the leak is. In this example63.4 metres from the Red Out Station and 60.6 metres from the Blue Out Station. The time delay is calculated at 2.3 milliseconds.The correlation shown has a SNR of 29:1. Signal to Noise Ratio (SNR) means the largestcorrelation peak is 29x larger than any other displayed peak shown on the correlation graph.Hence the larger the SNR the more pronounced the peak will be.Press 1(Listen) Attach the headphones to the control unit before pressing 1. Use the arrowkeys to select the sensor required to listen to; BASE, RED, BLUE or YELLOW. The sound willtransmit in blocks of approx 20 seconds. To stop listening press ENTER, but note the soundwill continue until the 20 seconds elapses.
28Pipe dataPress 2(Pipe data) To accurately locate a leak position the user must enter the correct information with respect tothe physical properties of the pipe. Each section must be entered to be accepted by thesystem.Press 5 to Add new pipe data.A default setting appears.
29Press 1 to enter Length, the distance between the sensors. In this example 124m.Press 2 to enter material type, use the arrow keys to select the required pipe material andpress ENTER. In this example cast iron is selected.
30Press 3 to enter the diameter of the pipe. In this example 80mm. The velocity column will thenautomatically be updated. In this example 1.280 m/ms.To add another pipe length for mixed material situations, press 5 to add another pipe. Ifworking on mixed materials, work from the sensor colour displayed at the bottom of the pipedata screen, back to the sensor colour at the top of the screen. Up to 6 mixed materials canbe used in one correlation. In this example, from the blue sensor the cast iron pipe wasentered first, the ductile iron pipe was second and the PVC pipe was third.
31To delete a pipe, use the arrow keys to highlight the relevant pipe to remove and press 6. To delete all pipe data press 0.To use a manual velocity the user has calculated, press 4 and type in the new velocity value,this will automatically update the default value for the current correlation only.To enter and store extra user defined velocity’s and diameters, press 2 Materials, then press1 Edit materials, then press 1 Edit table, then press 3 Add entry. To restore to factory setvalues see Test and Service menu.
32Zoom Press 5 (Zoom) To see a more enhanced view of the leak centred around the dashed cursorline. Moving the dashed cursor line along the graph to the required point then press 5.Use the arrow keys to zoom in or out stage by stage.For a quicker zoom press 1 to zoom to maximum view or press 5 to zoom to a minimum view.
33Peak Suppression ScreenPress 6(Peak Suppression) To suppress a section of the time delay range from the currentcorrelation. This may be used to remove known leaks or demand usage that may be hidingunknown leaks.Move the dashed cursor line to the start point of the data to be removed and press 1 to selecta start point. A small arrow will appear below the correlation graph. Move the dashed cursorline along the data to select the stop point. Press 1 again and the section of the data to besuppressed will disappear from the correlation graph as shown below.Press Enter to accept the data and a new correlation can be carried out without thesuppressed data. To replace the removed data press 2 delete.
34View SettingsPress 7 (View Settings) During correlation or after stopping a correlation press 7 to view allpipe data and filter settings currently in use. A pop up box appears to display the information.Press Cancel to remove the display.
35Calculate VelocityPress 8(Calc Vel) After stopping correlating the option to calculate velocity appears. Avelocity check gives a more accurate velocity of the pipe to be correlated instead of using thedefault velocity value.To calculate velocity a leak must be present, either real or induced. The leak can either bebetween the sensors called an “In Bracket” check or outside of the sensors called an “Out ofBracket” check. Unlike correlation, where the more central the leak is positioned between thesensors, the more accurate the result. A velocity check requires the leak to be positionedcloser to one of the sensors to create a larger time delay.The procedure for a velocity check is to position your sensors as described above. Induceyour leak or use the real leak. Correlate as normal entering the correct pipe data. After a goodcorrelation peak, stop correlating and press 8(Calc vel). The screen below will be displayed.Enter the position of the leak from the RED Out Station.If the leak is “In Bracket” between the sensors, then enter the distance from the leak to theRED sensor. (In this example 92.7m)If the leak is “Out of Bracket” to the left of the RED sensor, then enter the distance 0If the leak is “Out of Bracket” to the right of the second sensor, then enter the distancebetween the RED sensor and second sensor.
36A new velocity will be displayed under the correlation graphThe control unit then gives you the option to either use the calculated velocity by pressingENTER or CANCEL to ignore it.By accepting the calculated velocity value, the default velocity value under Pipe Data will bereplaced with the new calculated velocity value. A new correlation position may now bedisplayed using the more accurate velocity value.
37FiltersIf correlating with pipe data entered, the default filter settings will be used depending on theproperties of the pipe. Some times this may not be accurate enough to filter out unwantedfrequencies, so the user may wish to alter the filer settings to remove certain frequencies thatare influencing the current correlation.Press 3 (Change Filters) Displays a pox up box with four options :-Quick set-metallicQuick set-non metallicClear allManual settingsBy using the arrow keys highlight the required option and press ENTERQuick set-metallic removes all frequencies from 0Hz to 405Hz. So the sensors will onlylisten to frequencies of 406Hz and above.Quick set-non metallic removes all frequencies from 696Hz and above. So the sensors willonly listen to frequencies of 695Hz and below.Clear all removes any filter settings set and will listen to all frequencies.Manual settings allow the user to view the frequencies and set to the user preference.The filter screen displays the frequencies heard at the two sensors in use. The bottom axis ofeach graph displays the frequency level starting at 0Hz to the left. Two cursor lines aredisplayed on each graph and are move by using the arrow keys. The longer dashed cursorline is the current line selected to move. The lines on each graph will not cross. The positionof the current cursor line is displayed under the second graph, in this example 275Hz.
38Press 1 (Select cursor) This toggles between the two cursor lines. Only the longer dashedcursor line can be moved.Press 2 (Low cut-off) When the left cursor line has be selected the low cut off option isdisplayed. Move the left cursor to the required position and press 2. This will remove allfrequencies to the left of the cursor line. Removed frequencies are displayed in a cyan colour.In this example the cursor was moved to 257Hz and a low cut off was selected, so allfrequencies from 0Hz to 257Hz will be removed.Press 2 (High cut-off) When the right cursor line is selected the high cut off option isdisplayed. Move the right cursor to the required position and press 2. This will remove allfrequencies to the right of the cursor line. Removed frequencies are displayed in a cyancolour. In this example the cursor was moved to 505Hz and high cut off was selected, so allfrequencies from 505Hz and above will be removed. By pressing ENTER to accept the datawould mean frequencies between 258Hz and 504Hz only are being used to process thecurrent correlation.
39Press 3 (Notch) This options allows a “notch” of frequencys to be filtered out. Move theselected cursor to the left of the area of frequency to be removed and press 3. A small arrowappears under the graph. In this example 81Hz is selected.Move the same cursor to the right of the area to be removed and press 3 again. In thisexample 105Hz. The notch area of filtered out frequencys will change colour to cyan. Thecurrent correlation will now ignore frequencys from 81Hz to 105Hz but will use all otherfrequencys.Press 4 (Clear all) This clears all filter settings currently set.Press 5 (Auto Filter off) This will toggle between Auto Filter OFF and Auto Filter ON. Atpresent this option is under development and will be released on a future upgrade.
40Program upgrade (Software and Firmware)The MicroCorr Digital correlator and Out Stations have been designed so that their programscan be upgraded as the latest developments take place.The MicroCorr Digital Software is defined as the user interface within the base station, andthe Firmware describes the program that communicates between the correlator base stationand the Out Stations.To upgrade the Software and/or Firmware a program must be installed on the PC. This is theMCD Updater Application. The base unit requires both software and firmware to operate,where as the Out Stations only require firmware to operate.The application, the latest software and the latest firmware are all available as downloadsfrom the Palmer website www.palmer.co.uk/microcorr.htmOnce all the files have been downloaded to the PC start the MCD Updater Application andfollow the instructions as described below.Screen descriptionThe fields of the MCD Updater screen are described by number below.Current System Information1. This field gives the boot sector version within a base/out station and cannot be changedby the user. It can only be used by Palmer engineers for system diagnostics.2. This field gives the current firmware version within a base/out station.3. This field gives the software version within a base station only, but will currently state“Unavailable” before and after upgrading as the field is currently under development.Note, this information can also be seen on the MicroCorr Digital information screen. 4. The ‘Update’ button is used to refresh the data in fields 1, 2 and 3.12345 678 910111213Click tobrowseClick tobrowse
41Upgrade Information5. This field gives the name and location of a firmware update file. These files have theextension .mdf and contain the required information to upgrade a system’s firmware.6. This button is used to ‘browse’ for a firmware update file on a local/network file system.7. When a firmware file has been selected, this field displays version information about thefile. This allows the user to check that a newer version of firmware is being installed ontothe system.8. This field gives the name and location of a software update file. These files have theextension .mds and contain the required information to upgrade a system’s software.9. This button is used to ‘browse’ for a software update file on a local/network file system.10. This field displays version information about the file.11. If there is a firmware and/or a software file selected clicking this button performs theupgrade on the connected system.12. This is a progress bar that indicates the progress of any running operation.13. This button exits the application.The File MenuThere is only one option in the file menu, which is ‘Exit’. Selecting this menu option closes theMCD Updater application.The Unit Type MenuThis menu allows the user to select the type of unit that is being programmed. The user caneither select ‘Base Station’ or ‘Out Station’.The Port Settings MenuThis menu allows the user to select the communications port used by the MCDUpdaterapplication. In this menu there are 4 predefined options COM1 through COM4, and a userdefined port which allows the user to specify the port to use.Important Notes for upgrading a MicroCorr Digital correlator (August 2003)When using the upgrade program for the MCD the following points should be noted:All of the correlation (.ked) files stored on the MicroCorr Digital will be deleted during theupgrade operation. Therefore the user must save any required correlation files to a PCbefore upgrading the software.Once the upgrade procedure starts the power to the PC and the MCD should not beinterrupted, if it is the MCD will be rendered unusable.1. Reboot your PC before starting, and ensure the Palmer Upgrade program is the onlyapplication running, this ensures no other application can cause a break in the upgradeprocedure.2. Ensure the MCD is connected to a charger that is switched on. This ensures a low batterydoes not cause a shutdown.3. Never try to interrupt the upgrade procedure once it is initiated.
42Upgrading a Base StationThe following steps should be followed to upgrade the software/firmware within a basestation:1. Connect the PC to the base station via the supplied serial cable.2. Connect external power to the system. This ensures that the system does not powerdown while the upgrade is in progress. Then back up all correlation files to the PC.3. Start the MCDUpdater application and ensure that the ‘port’ is set correctly and ‘unit type’is set to base.4. Click on the ‘Update’ button to retrieve the current versions from the system.5. Click on the ‘Browse Firmware’ and ‘Browse Software’ buttons and locate the firmwareand software update files. If only the software or the firmware is to be upgraded then onlyselect the required upgrade file.6. Ensure that the update files are newer than those currently installed on the system. (Thelatest version should always be used unless told specifically by your Palmerrepresentative that an older version should be used).7. Click on the ‘Program’ button and wait for the operation to complete.8. Remove the power and reset the system. Wait for the system to fully restart, then click onthe ‘Update’ button and verify that the software/firmware has updated successfully.9. Switch the unit off completely and then switch back on again.Upgrading an Out StationThe following steps should be followed to upgrade the firmware within an out station:1. Connect the PC to the out station via the supplied serial cable.2. Connect external power to the system. This ensures that the system does not powerdown while the upgrade is in progress.3. Start the MCD Updater application and ensure that the ‘port’ is set correctly and ‘unit type’is set to Out Station.4. Click on the ‘Update’ button to retrieve the current versions from the system.5. Click on the ‘Browse Firmware’ button and locate the firmware update file.6. Ensure that the update file is newer than that currently installed on the system. (The latestversion should always be used unless told specifically by your Palmer representative thatan older version should be used).7. Click on the ‘Program’ button and wait for the operation to complete.8. Remove the power and reset the system. Wait for the system to fully restart, then click onthe ‘Update’ button and verify that the firmware has updated successfully.9. Remember to upgrade both red and blue Out Stations and, if purchased, the optionalyellow Out Station.Upgrade verificationTo verify the latest versions of software have been successfully installed, go to the mainmenu on the correlator and select “5 Test and Service”. Then select “8 Information”. Thisshows the Information screen, which lists the software and firmware versions.
43Technical SpecificationBase stationProcess Full digital correlationFrequency response 0.1 to 5000HzFilter selection Automatic Parametric FilteringManual setting if requiredResolution ±0.1mDisplay Backlit colour ¼ VGAAntennae External antenna/magmountMixed material 6 sectionsCorrelation files Up to 30 files storedPlug-in memory upgrade for >200 filesBattery level indication For all system unitsBattery type Rechargeable Lithium ion batteries, fieldreplaceableBattery life >24 hours continuous use without backlight14 hours continuous use with backlightKey functions Combined correlation/survey modeListen (acoustic survey)Frequency analysisPeak suppressionComputeData replay for post processingVelocity measurement (tricorrelation option)User definable pipe types and velocitiesLanguage Selectable via menuOperating software User upgradable from www.palmer.co.ukPrinter output RS232 to parallel printerPC download Via PC software, Windows compatibleDimensions 220mm x 250 x 100mmWeight 1.8KgOperating temperature -15°C to +50°CShock protection Drop tested to 1 metreEnvironmental IP65Enclosure Fully injection-moulded ABSConnectors Military specification AmphenolDiagnostics Self-test and auto-calibration on power-on
44Out StationRadio communication Single frequency digital transceiverRadio frequency UHF (local regulations apply)Controls ON/OFF (all functions remotely controlledand monitored from Base station) with LEDstatus lightConnections HeadphonesExternal antenna (if required)Battery type Rechargeable Lithium ion batteries, fieldreplaceableBattery life >18 hoursHazard indication Flashing lights (2)Antenna External antennaPortability Integral sensor stowageIntegral cable wrapDimensions 210 x 145 x 305mmWeight 1.6kgEnvironmental IP68Housing Fully injection-mouled ABSConnectors Military specification AmphenolShock protection Drop tested to 1 metreSensorType Digital sensor with integral high strength magnetFrequency range 0.1 to 5000HzDynamic range >90dBDimensions 180mm x 50mm diameterWeight 1kgEnvironmental IP68, rubber shroud for shock protectionConnection to Out Station 2m cable with strain reliefMilitary specification connector
45WarrantyAll equipment is warranted by Palmer Environmental Ltd to be free from defects in materialsand workmanship for a period of one year (unless otherwise stated) from the date of shipmentto the original customer. This warranty is only valid if the equipment has been installed andused in the correct manner as described in this manual.Repair or replacement (at Palmer Environmental’s option) will be made without chargeprovided the above conditions have been met.If any problems occur, notify Palmer Environmental Ltd or its authorised representative givingfull details of the problem, and the model and serial number of the equipment. You willreceive technical advice and/or shipping instructions depending upon the nature of theproblem.PatentsPatents for the MicroCorr Digital are pending. MicroCorr is a registered trade-mark.NotePalmer Environmental reserves the right to change products, services or specificationswithout notice.Palmer Environmental LtdTy Coch HouseLlantarnam Park WayCwmbranNP44 3AWUnited KingdomTel: +44 (0) 1633 489479Fax: +44 (0) 1633 877857email: info@palmer.co.ukhttp://www.palmer.co.ukTechnical support: support@palmer.co.uk

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