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5: Maintenance & Repair

42

U3000/U4000 User Manual

(Issue 2.0)

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Summary of Contents for U3000

Page 1: ...Micronics U3000 4000 Ultrasonic Flowmeter User Manual Issue 2 0...

Page 2: ......

Page 3: ...cers 10 2 3 1 Transducer positioning 10 2 3 2 Preparation 11 2 3 3 Transducer attachment 11 2 3 4 Attaching the guide rail to the pipe 12 2 3 5 Fitting the transducers 12 2 4 Installing the USB Virtua...

Page 4: ...printer 36 4 8 Operation with the Calec ST Energy Totaliser 38 4 8 1 Pulse output 38 4 8 2 Connecting the U3000 U4000 to the Calec ST Energy Totaliser 38 4 8 3 Configuring the U3000 U4000 38 4 8 4 Con...

Page 5: ...k Start set up procedure Continuous signal monitoring Isolated pulse output Isolated current output 4 20mA 0 20mA or 0 16mA Password protected menu operation for secure use Signal diagnostics Multi fu...

Page 6: ...D Separation Distance Separation Distance Separation Distance Separation Distance Reflex mode Reflex mode double bounce Reflex mode triple bounce Diagonal mode This is the mode most commonly used The...

Page 7: ...ermined mainly by the pipe diameter and the type of transducer set in use The diagram in Figure 1 1 illustrates the importance of applying the correct separation distance between the transducers to ob...

Page 8: ...iable pulse output proportional to the measured flow rate which can be scaled to suit a particular flow range Finally two isolated alarm outputs are provided which can be configured in a number of way...

Page 9: ...4 20mA Pulse and Alarm I O connections The 4 20mA pulse and alarm I O cables enter the bottom of the instrument via two cable glands and are connected internally to a terminal block Full details of th...

Page 10: ...al function keys They can be used to enter straight forward numerical data select the displayed flow units or provide quick access to frequently required control menus 1 4 3 Power supply Mains supply...

Page 11: ...hree M4 screws see Figure 2 3 1 Remove the U3000 U4000 terminal cover 2 Fix a screw into the wall at the required point to align with the mounting keyhole on the back of the enclosure 3 Attach the enc...

Page 12: ...0V E GND TxD RxD mA mA PULSE PULSE ALARM1 ALARM1 ALARM2 ALARM2 EXPIO 1 EXPIO 2 EXPIO 3 EXPIO 4 EXPIO 5 EXPIO 6 EXPIO 7 EXPIO 8 24V 24V 230V L 230V N 230V E FUSE 141mm 198mm M4 Screw Slot M4 Keyhole Mo...

Page 13: ...ALARM1 ALARM1 ALARM2 and ALARM2 respectively RS232 Interface U4000 only an RS232 interface is provided to allow logged data to be downloaded to a PC or RS232 compatible printer The interface is connec...

Page 14: ...storted by any upstream or downstream obstructions This is best achieved by ensuring there is a straight length of pipe upstream of the transducers of at least 20 times the pipe diameter and 10 times...

Page 15: ...trasound signal strength and therefore maximum accuracy 2 3 3 Transducer attachment Figure 2 4 Transducer attachment completed assembly The type A or B transducers are fixed to the pipe using the adju...

Page 16: ...transducer cable blue through the right hand guide rail end plate and up through the rectangular opening at the left hand side of the guide rail as shown in Figure 2 7 Note When carrying out the foll...

Page 17: ...e mark on the ruler scale then lower the transducer onto the pipe by turning the thumb screw anti clockwise until firm contact with the pipe is made Note The correct separation distance for the partic...

Page 18: ...nstallation routine you must carry out a minor configuration change to the newly installed virtual com port The way in which you gain access to the com port set up window will vary depending on your o...

Page 19: ...date time Language Backlight Initial instrument setup Paragraph 3 1 Connect and take basic flow readings Paragraph 3 2 4 20mA ON OFF Paragraph 3 4 1 4 20mA Calibration Paragraph 3 4 1 Pulse ON OFF Par...

Page 20: ...tting the date time 1 Select Setup Instrument from the MAIN MENU and press ENTER The SETUP INSTRUMENT screen should now be displayed 2 Select Set Date Time and press ENTER 3 A flashing cursor should a...

Page 21: ...ENU then press ENTER 2 Select Change Language from the SETUP INSTRUMENT screen then press ENTER 3 Select the required language from the list provided and press ENTER 4 The instrument returns to the MA...

Page 22: ...MENU and press ENTER You will then be presented with a series of screens in which to enter the data mentioned above 2 Select the dimension units millimetres or inches used to measure the pipe then pre...

Page 23: ...st provided and press ENTER If the liquid is not listed select Other and enter a propagation rate in metres second Contact Micronics if this is not known 11 If you need to alter the fluid temperature...

Page 24: ...Paragraph 2 3 3 The separation distance must be set to within 0 5mm Taking a flow reading 17 Once the transducers have been fitted and connected press the ENTER key 18 This will take you from the SEN...

Page 25: ...the flow indication under no flow conditions 1 Stop the liquid flow 2 With the instrument in FLOW READING mode press the Velocity function key and observe the reading m s Any reading other than 0 000...

Page 26: ...f the liquid In most situations it is not possible to inspect the pipe internally and the true condition is not known In these circumstances experience has shown that the following values can be used...

Page 27: ...Select the value of the Damping factor as required to remove any unwanted display fluctuations Increasing the value applies a greater smoothing affect 4 Press ENTER to apply the change Key Point If t...

Page 28: ...ut ranges to turn it ON 5 Press ENTER to return to the 4 20mA OUTPUT screen 4 20mA Signal calibration and ranging This procedure describes how to calibrate the 4 20mA output and scale it to operate ov...

Page 29: ...want to associate with a 20 00mA output 9 Select Flow at min output and press ENTER then enter a value of the flow rate that you want to associate with a 4 00mA output This could be 0 10 Select Output...

Page 30: ...electro mechanical counter Refer to the manufacturer s data sheet for the minimum pulse width 6 Select Exit and press ENTER to return to the FLOW READING screen How to turn the pulse output OFF ON 1...

Page 31: ...m the FLOW READING OPTION menu and press ENTER 2 The ALARM SETTINGS screen should be displayed as shown below This screen shows two parameters Mode and Limit that can be individually set for Alarm 1 a...

Page 32: ...be activated Pulse Frequency When Frequency is selected a variable frequency pulse proportional to the flow rate can be output at the ALARM 1 or ALARM 2 outputs When this feature is used the Max Puls...

Page 33: ...he Options key to access the FLOW READING OPTION screen shown 2 If the Totaliser is indicating Run select it and change it to Stall Press ENTER 3 Select Reset Total and press ENTER 4 Press ENTER on th...

Page 34: ...de the indicated total flow by the time taken This will give you the average flow in m s galls hour or whatever units you select Note that in a bi directional flow situation you must calculate the dif...

Page 35: ...Logging interval and enter the required period e g 10 seconds 5 Select Log Totals to log either Totals Totals or Both as shown 6 Select Clear log if you want to discard any existing logging data 7 Se...

Page 36: ...UP DOWN scroll keys The maximum values will then increase decrease as appropriate 6 To exit the VIEW LOG AS GRAPH screen and return to the REAL TIME LOGGER screen press ENTER Monitoring the logged ev...

Page 37: ...R screen 3 Select Log data to and choose Memory This will store the log to the internal memory 4 Select Logging interval and enter the required period e g 10 seconds 5 Select Log Totals to log either...

Page 38: ...the REAL TIME LOGGER screen 2 Select View log as text or View log as graph as required Manually stopping the auto logging session 1 The logging session will stop automatically at the programmed Stop d...

Page 39: ...escribes how to download stored data to a PC It assumes that the U4000 is already connected to the PC s serial port and that RS232 USB communication has been established as described in Paragraph 4 6...

Page 40: ...hing capability or exported to Microsoft Excel for more detailed graphing and analysis Portagraph II will automatically detect the unit s RS232 configuration baud rate data bits parity stop bits so th...

Page 41: ...nting logged data 1 Select View Logged Data from the MAIN MENU This will display the VIEW LOGGED DATA screen shown 2 Select Choose from list of sites and select the site name for the log you want to p...

Page 42: ...endently generated and output on ALARM1 or ALARM2 outputs This gives a more stable reading than the pulse packets that would normally be output 4 8 2 Connecting the U3000 U4000 to the Calec ST Energy...

Page 43: ...alue which must be used by the Imp value on the Calec This is a non editable value 12 Select Exit and press ENTER to return to the FLOW READING screen The message Frequency Pulse is ON should now be d...

Page 44: ...e Imp The Volume per pulse value should be the same as that indicated in the U3000 U4000 Calculated Pulse Value Both of these values can be entered using the Calec s Inputs menu Refer to the Calec s U...

Page 45: ...aced on the sensors every 6 months especially on pipes where the application is too hot to touch If the signal level drops below 30 this is also an indication that the sensors need re greasing 5 Regul...

Page 46: ...5 Maintenance Repair 42 U3000 U4000 User Manual Issue 2 0...

Page 47: ...surface contact with the transducer Flaking paint should be removed Variable air gap in concrete covered pipes affecting the ultrasonic signal quality Poor internal pipe construction Rough internal pi...

Page 48: ...the fluid type has been entered correctly the correct transducer type has been selected the pipe diameter is within specifications of the selected transducers the pipe is completely full the pipe sur...

Page 49: ...etation You have entered an out of range value in the Zero cutoff field in the Options menu Response Enter a valid number Totaliser beyond maximum Interpretation The totaliser has overflowed its maxim...

Page 50: ...side its accepted range when calibrating the 4mA signal output Response Re calibrate the 4 20mA output see Paragraph 3 4 1 DATA LOGGING ERRORS U4000 only ERR Log not empty Interpretation When using Qu...

Page 51: ...m Response Enter a valid number ERR Temperature range Interpretation You have entered an out of range value for the fluid Temperature Accepted temperature range 20 C to 300 C Response Enter a valid nu...

Page 52: ...te across the pipe It is used to see if the signal is being taken from the burst at the correct time to get the strongest signal This value is normally a few s below the calculated s value If however...

Page 53: ...hain 7 1 4 Extended signal cable options Normally the U3000 U4000 is supplied with 3m signal cable lengths However 1m and 5m lengths are available as options If required custom signal cables with leng...

Page 54: ...7 Options 50 U3000 U4000 User Manual Issue 2 0...

Page 55: ...al h USgals s USgals min USgals h Barrel h Barrel day m s m min m h Selectable Volume Units litres m Total Volume 12 Digits forward and reverse APPLICABLE FLUID TYPES Fluid Condition Clean liquids or...

Page 56: ...ble Logging Interval User programmable 5 secs to 1hr Operating Modes Logging stopped when memory full Logging continues on memory overflow with old date overwritten Logged Data Transfer Logged data ca...

Page 57: ...Power Consumption 10 5W Alternative Input Supply 24Va c d c 1A max MECHANICAL Enclosure Material ABS and aluminium Dimensions 230mm x 180mm x 120mm Weight 1 2kg Protection IP65 Fixing Wall mountable...

Page 58: ...3000 U4000 User Manual Issue 2 0 SHIPPING INFORMATION Box Dimensions 410mm x 205mm x 355mm Weight 7 5 kg Volumetric Weight 5 kg Micronics reserve the right to alter any specification without notificat...

Page 59: ...U3000 U4000 User Manual 55 Issue 2 0 CE Declaration of Conformity Ultraflow U3000 and U4000 Models Ultrasonic Clamp on Flow Meter 25th January 2010...

Page 60: ...56 U3000 U4000 User Manual Issue 2 0...

Page 61: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...

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