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1. 050 0 The units digit should now blink Increment or decrement the units digit in an identical manner to the tens digit described above key to move to the decimal digit 050 0 The decimal digit should now blink Increment or decrement the decimal digit in an identical manner to the tens digit described above key to enter the Pipe ID numerical value and move to the next screen Use and keys to scroll through the pipe materials and then press To select the material and complete the setup procedure Issue 1 2 Page 15 Micronics U1000 HM User Manual If any of the parameters need to be changed from the default values for example different units are required then the menu system must be activated via the password see section 8 6 2 Pulse output Pulse output can be set up to operate in four modes namely volumetric frequency energy or Low Flow Alarm 6 2 1 Volumetric mode In Volumetric mode each pulse output represents a measured volume of 10 litres default value In Volumetric mode with the Vol per Pulse set to 1 and the pulse width set to 25ms the maximum number of pulses that can be output without storage is 1 0 025 2 20 pulses per second If the flow rate in the pipe is such that more than 20 pulses per second are generated a Pulse Overflow error may eventually occur if the stored number of pulses exceeds 1000 To avoid this set the Vol per Pulse to 10 litres or reduce the Pulse Width value 6 2 2 Fr2. 0 000 to 0 500 If an invalid value is entered then the following warning message is displayed 5 When programming the Calibration Factor this is limited to the range 0 5 to 1 5 If an invalid value is entered then the following warning message is displayed 6 If an attempt is made to zero the offset between the temperature sensors and the difference in temperature is too large then this error message will be displayed Ensure the temperature sensors are correctly plugged in and are both at the same temperature Issue 1 2 Page 29 Micronics U1000 HM User Manual CE Declaration of Conformity Micronics Ltd Knaves Beech Business Centre Davies Way Loudwater High Wycombe Bucks HP10 9QR The Products Covered by this Declaration Ultrasonic flow meter U1000 This product is manufactured in accordance with the following Directives and Standards Directive 2004 108 EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility Directive 2006 95 EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits The Basis on which Conformity is being Declared The manufacturer hereby declares under his sole responsibility that the products identified above comply with the protection requirement
3. Centre Davies Way Loudwater Buckinghamshire HP10 9QR Web site www micronicsflowmeters com Tel 44 1628 810456 Fax 44 1628 531540 Directors E J Farnon M A Farnon Registration No 1289680 V A T Registration No 303 6190 91
4. If a valid flow reading is obtained then after a few seconds the Total Energy screen will be displayed lf the flow value is displayed as this indicates that there is no usable signal from sensors The cause of this could be incorrect pipe data no grease on the sensors sensor not in contact with the pipe or very poor surface conditions on the inside of the pipe Issue 1 2 Page 14 Micronics U1000 HM User Manual 6 1 How to enter the Pipe ID Figure 10 shows the Enter Pipe ID screen after an initial power up Press the Press the Press the Press the Press the Press the HUE Figure 10 Enter Pipe ID Screen Metric Initially the hundreds unit 050 0 will blink key to increment the hundreds digit 050 0 in the sequence O 1 Press once to increment digit or hold key down to automatically toggle between 0 and 1 key to decrement the hundreds digit in the sequence 1 0 Press once to decrement digit or hold key down to automatically toggle between 1 and 0 key to move to the tens digit 050 0 The tens digit should now blink Increment the tens digit in the sequence 0 1 2 3 4 5 6 7 8 9 0 using the Ls key Press once to increment digit or hold down to scroll through the numeric sequence Decrement the tens digit in the sequence 9 8 7 6 5 4 3 2 1 0 9 using the key Press once to increment digit or hold down to scroll through the numeric sequence key to move to the units digit
5. One 2 line x 16 character LCD with backlight e Four tactile key switches e Two LED s Figure 2 U1000 HM User Interface 4 1 Key switches Selection key Allows the user to select between options on the display Used to decrement the value of each digit in numeric entry fields Used to increment the value of each digit in numeric entry fields Used to enter the selection displayed or terminate the data entry Pressing this key can also take the user to a sub menu or to the Flow Reading screen kWh LED this pulses each time an energy pulse is sent by the instrument Pulse Enabled LED is illuminated when the Pulse output is ON Issue 1 2 Page 6 Flow QS Micronics U1000 HM User Manual 5 Installing the U1000 HM Possible Ai Uniform Flow Profile Distorted Flow Profile be ee a en FEE ae ae Possibl Se sludge i ee E Quam a 0 x Diameter gt Valid transducer location 20 x pamaen Figure 3 Location of Transducers Flow For correct measurement of the energy transfer being measured by the instrument the flow measurement needs to be made on the hot side of the system as near the hot temperature sensor as possible In many applications an even flow velocity profile over a full 360 is unattainable due for example to the presence of air turbulence at the top of the flow and possibly sludge at the bottom of the pipe Experience has shown that the most consistently accur
6. 4V ac or dc 7VA maximum 5m screened 6 core Opto isolated MOSFET volt free normally open contact PT100 Class B 4 wire Range 0 to 80 C Resolution 0 1 C Cable length 5m standard RTU 1200 to 38400 PI MBUS 300 Rev J RS485 Format Baud rate Standards Physical connection Material Fixing Degree of Protection IP54 Flammability Rating UL94 V 0 Dimensions 250mm x 48mm x 90mm electronics guide rail Weight 0 5kg Plastic Polycarbonate Pipe mountable Issue 1 2 Page 26 Micronics U1000 HM User Manual Environmental fF Pipe temperature 0 C to 85 C Operating temperature Electronics 0 C to 50 C Display a e Keypa oo y S 4 key tactile feedback membrane keypad 12 Appendix Il Default values The settings will be configured at the factory for either metric or imperial units Table 2 lists the metric default values Table 2 System Default Values Table 3 lists the default values when Imperial dimensions are selected Table 3 System Default Values Issue 1 2 Page 27 Micronics U1000 HM User Manual 13 Appendix Ill Error and Warning Messages System errors There are three possible System Error messages that can be displayed These are 1 Poor Signal The unit is unable to detect a signal from one or both transducers If this message persists the sensors will need to be relocated 2 Pulse Overflow The value for the Vol per pulse is set too low Increase the Vol p
7. 9 Flow m3 hr_ 2 registers IEE754 floating Point _ Figure 11 Modbus registers 7 Subsequent Power ON Sequence If the power supply is cycled OFF then ON after the pipe data has been entered all subsequent Start ups will use the same configuration as was previously entered If the configuration needs to be changed for any reason the user can make use of the password controlled menu as described in section 8 Issue 1 2 Page 17 Micronics U1000 HM User Manual 7 1 Information screens This screen is not shown if Select Totals is set to Off Figure 12 information screens The system will initially display the Flow Reading screen If there are valid flow and temperature readings then after a few seconds the Total Energy screen will be displayed lf the flow reading is invalid then the Flow screen will be displayed Similarly the Temperature screen will be displayed if a reading goes out of range Issue 1 2 Page 18 Micronics U1000 HM User Manual 8 Password Controlled Menus The password controlled menu allows the user some flexibility to change the default settings User Password 71360 Change the dimensions from mm to inches or vice versa Change from Flow to Velocity Measurement Change the system units litres m or Impgal USgal Change the flow units l s I min or gal s gal min or USgals s USgals min Change the Pulse Output type Change the Pulse output parameters Change the energy units 8 1 Gene
8. F3 102107 95 100 E4 108 110 101 106 D 107 110 Figure 4 Separation Table Issue 1 2 Page 8 Micronics U1000 HM User Manual The diagram below shows how to adjust the separation of the sensors C Te view as received See table for required separation Lower enough for sideways Tighten screw Undo screw raising sensor lowering sensor Move sensor to new position as defined by table Figure 4 Sensorsin the new positions Figure 5 Separation Setting Issue 1 2 Page 9 Micronics U1000 HM User Manual 5 3 Attaching the U1000 HM to the pipe Follow the five steps shown in Figure 6 below to attach the U1000 HM to the pipe The grease provided in the syringe is applied to the centre of the sensors as shown above Clamp guide rail and sensor assembly to pipe using the supplied banding and release sensor locking screws Connect power and sensors to the electronics assembly Sensor leads can be connected either way round Click electronic assembly onto guide rails and sensor assembly Figure 6 simple steps to attaching the U1000 HM on the pipe The locking screws and washers should be kept in case it is necessary to change the location of the guide rail and sensors See the relocation section for the procedure to do this Issue 1 2 Page 10 Micronics U1000 HM User Manual 5 4 Adaptors for small pipes Less than 40mm outside diameter 40 to 60mm outside di
9. Figure 19 Disconnect the sensors Remove the original grease from the sensors Push the sensor blocks into the guide rail so that the washers and locking screws can be refitted Place a bead of grease down the centre of the sensor block using the syringe provided See illustration on fitting the guide rail to the pipe for recommended bead size Follow the original procedure for installing the guide rail on the pipe Issue 1 2 Page 25 Micronics U1000 HM User Manual 11 Appendix I U1000 HM Specification Table 1 lists the U1000 HM Product Specification Measuring Technique Transit time Measurement channels Timing Resolution Turn down ratio 200 1 Flow velocity range 0 1 to 10m s bidirectional Applicable Fluid types Clean water with lt 3 by volume of particulate content Accuracy 3 of flow reading for flow rate gt 0 3m s Repeatability 0 5 of measured value Selectable units Velocity m s ft s Flow Rate I s I min gal s gal min USgal s USgal min m min m h 50ps Volume litres m3 gals USgals Energy kWh MWh 8 digits with roll over to zero Languages supported Power input Power consumption Cable Pulse Output Output Isolation 2500V Pulse width Default value 25ms programmable range 3 99ms Pulse repetition rate Up to 166 pulses sec depending on pulse width Frequency mode 200 Hz maximum Maximum load voltage current 48V AC 500mA Temperature sensors Type English only 12 2
10. General procedure for changing menu settings cccecccceccssseeceecceeeeeeeeseeeeeeeeseeeeeeeeesaaaess 19 8 1 1 SSS OI ADA E TE EA A E EE A AEA A A A A EA EN T 19 8 1 2 Dila eny MONU S cic sananctancentctennin sicun an taiiatinimaciuiael E EES 19 8 2 User Password controlled menu structure ccccsceeecceeceeeeeeeeeeaeeeeeeeesaeeeeeeeesaaeeeeeesaaeeeeeeeas 19 9 WRAGHOSTICS Monu esrin eae EEE A EA EARE 24 10 Relocation of guide Talls e EEEa NaN Ranti 25 11 Appendix U1000 HM Specification ccccccccccsssseeceeceeseeeeceeeeseeeecseeaseeeecssaaseeesessageeeeessas 26 12 Appendix I Dolau VAISS ensein sea aeuininatinnseua E ENE 27 13 Appendix IIl Error and Warning Messages c cseeccccceeeeeeceeeeeeeeeeeeeeseaseeesaeeeeesaeeeeeeaeeeeeens 28 14 Decliaralon ol COMO cascahodssctteudeynusemsucueesoy anuowarveiuccwsdonnnwiantedaastosnneasabedseetianesenancn 29 Issue 1 2 Page 2 Micronics U1000 HM User Manual 1 General Description e Fixed installation clamp on heat meter e Easy to install e Requires the minimum of information to be entered by the user e Transducer separation distance is factory preset to a nominal pipe size e Electronics and guide rail housings form an integral unit e Attached to the pipe using the supplied jubilee clips e Power to the unit is provided by an external 12 24V ac dc power supply e Operates on steel copper and plastic pipes with ID s in the range 20mm 0 8 t
11. Micronics U1000 HM User Manual Micronics U1000 HM Clamp On Ultrasonic Heat Meter User Manual Micronics Ltd Knaves Beech Business Centre Davies Way Loudwater High Wycombe Bucks HP10 9QR Telephone 44 0 1628 810456 Facsimile 44 0 1628 531540 E mail sales micronicsltd co uk www micronicsflowmeters com Issue 1 2 Page 1 Micronics U1000 HM User Manual Table of Contents DP GSS a SS OM sg soccer secede 2s tse gcc nade EE te ace sa ic becias n aac E E 3 2 GIG Siar DOCCIA E E E E E 4 NO WOK se E E A E E E soe cence teeeee 5 4 NSS i IN Si Sy eece race noneet renee cee asec aces enia ei eai eiai 6 4 1 ICY GUNG eea R neay saccnaasenee E A ES 6 5 Installing the U1000 HM eee ccccceceeccccceeeeceeeseeeseeeeeeseaseeeeeesaaseeeeeesaaeeeeesseaseceesseaeeeeessageeeeseaas 7 5 1 FTCA IO ene a E E E E E E 8 5 2 Sensor separation peace cecessancerecterenses een erocteeceoaueesececuctescene aendueeteenesngreeeenexesermneqsaunenoeaarescoseoncs 8 5 3 Attaching the U1000 HM to the Pipe ceeccccecceeeseeeeeeeeeeeeeeeeeeeeeeesseeeeeeeeeseaeeeeeesaeageeees 10 5 4 Adaptors f r small PINS S verb viinnennsecdumasncimmnes riddance weanesicdauvetosnsndesiiinenh area a aaiae 11 559 Attaching the Temperature sensors ccccccccccseeeeeeeeeeeeeceeeeeecaeeeeeeaeeeeesaaseeesseeeessaneeessaeeees 12 5 6 U1000 HM interface cable cccccccecccecsseeeeeceeeeeeeeeeeeeseeeeeeeseeeeeeseaeeeeseeeeesseeeeeeseaeeeesaee
12. ameter Greater than 60mm outside diameter Figure 7 Pipe Adaptors Guide rails for small pipes are supplied with adaptors The diagrams above shows how these are fitted around the pipe The top pipe adaptor clips into the ends of the guide rail Issue 1 2 Page 11 Micronics U1000 HM User Manual 5 5 Attaching the Temperature sensors The temperature sensors must be located at the input and output of the system that is being monitored The area of pipe where they are to be attached must be free of grease and any insulating material It is recommended that any coating on the pipe is removed so that the sensor has the best possible thermal contact with the pipe The sockets on the enclosure are marked Hot and Cold This defines the location of the temperature sensors on installations where heat is being extracted from the system To ensure an accurate temperature differential the following procedure should be used 1 Plug in the sensors and place them touching each other 2 Switch on the instrument and leave running for about 30 minutes 3 Enter the password controlled menu See Section 8 and scroll to the calibration sub menu 4 Press the enter key until the Zero Temp Offset screen is displayed 5 Select Yes and press the Enter key to display the Attach Sensors screen 6 Press the Enter key again and wait for instrument to return to the Zero Temp Offset screen The instrument can now be turned off and the installation of the temp
13. ate results are achieved when the transducer guide rails are mounted at 45 with respect to the top of the pipe The U1000 HM equipment expects a uniform flow profile as a distorted flow will produce unpredictable measurement errors Flow profile distortions can result from upstream disturbance such as bends tees valves pumps and other similar obstructions To ensure a uniform profile the transducers must be mounted far enough away from any cause of distortion such that it no longer has an effect To obtain the most accurate results the condition of both the liquid and the pipe must be suitable to allow ultrasound transmission along the predetermined path It is important that liquid flows uniformly within the length of pipe being monitored and that the flow profile is not distorted 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 the pipe diameter on the downstream side as shown in Figure 3 Flow Measurements can be made on shorter lengths of straight pipe down to 10 diameters upstream and 5 diameters downstream but when the transducers are mounted this close to any obstruction the resulting errors can be unpredictable Key Point Do not expect to obtain accurate results if the transducers are positioned close to any obstruction that distorts the uniformity of the flow profile Micronics Ltd accep
14. enens 13 5 7 Connecting the U1000 HM to the Supply 0 00 cccccceeseeeceeeeeeseeeeeeeeeeeessueeeeseeeeeeessaeaeeees 13 5 8 Pulse Output CONNECTION cccccccccceecceeeeseeeeeeeeecaaeeeeceeeeeeeaeeesseceeeeeseseesseeceeeeessuaaaeseeeeeessaaas 13 5 9 Modbus Connections Optional cccceccccceeeceeeesseeeceeeeeseeeeeeeeeeeeesesseeeseeeeeeeesseeaseeeeeeeeesaaas 13 510 Cable hw lt 1 gt 8 ee 14 6 Powering up for the first time ccccccccseeeeeeeeeeeeeceeeeeeeseeeeesseeseeeesaeeesseeeeeseaeeeeseaeeeessageesesageeesnaaes 14 6 1 How to enter the Pipe ID 2 0 cccccseeeeeceeeeeeeeeeeeeeeeeeeeeseeeeeeseeeeeeseadeeessaeeeeseeeeesseseeesseeeeeens 15 6 2 PURE OU cc ace strait E E E dew ias E aaienteundee nb atasshedewncieniancsh 16 6 2 1 Volumetric NODS iy naten cde eenactscaptsetentendasnncetadsicnssnaybeiasesdtendyucnwhaukebaddeonenanteeigetddeeiseandsiheceeoles 16 6 2 2 eco 0 219 e 0 6 0 en eee ee ee ee 16 6 2 3 BOTY AE E tole E E E E E EE A EE E EEN 16 6 2 4 LOW FON AI eae E E E E E E E 16 6 3 Modbus OPTION ci ilnaiendencder acca ceanenlendteinetdinseadiencdiiwesaskseuaitdes ube vdeseadieb ids vee wackuneat idee ucnuhadeiaidts 16 7 Subsequent Power ON Sequence cccccsesssccccceecceeeeeecceeeeseeeeeeececeeeesseaseseceeeeesseaaaseeeeeeeessaaaaeses 17 7 1 daie danetie rE ege i E E 18 8 Password Controlled Menus cccccccccssssseccccceeeceeeeseeeceeeeeeseeessecceeeeessaeaeeeeeeeeessaeaseeeeeeeesssaagasses 19 8 1
15. equency mode In Frequency mode the pulse output frequency is proportional to the flow rate within a specified frequency range of 0 200Hz The flow units on the frequency output are fixed as litres per second 6 2 3 Energy In Energy mode each pulse represents an amount of energy e g 1kKWh The same limitation on maximum pulse rate applies as detailed in the Volumetric Mode Again a larger unit of energy per pulse or a smaller pulse width may be required 6 2 4 Low Flow Alarm This mode will turn on the pulse output low resistance path when the flow rate goes below the value set in the parameters for this mode There is a 10 hysteresis on the switching of the output Once turned on the flow rate must rise by 10 more than the set value to turn it off again 6 3 Modbus Optional The Modbus RTU interface is configured via the Modbus sub menu in the password controlled menu The Baud rate can be selected in the range 1200 to 38400 The address can be set in the range 1 to 254 Issue 1 2 Page 16 Micronics U1000 HM User Manual The following registers can be read The instrument responds to the read holding registers CMD 03 If the flow reading is invalid then the flow value will be zero lf a temperature sensor goes out of range then the value will go to 11 C Both of these faults will clear the status bit Modbus U1000 Description egster Regier 40001 O DeviceID Oxac for the UOQO HM 40009 8
16. er Pulse setting in the password controlled menu 3 No BBME This indicates a unit failure Reset the unit by turning the power on and off Contact your supplier if the problem persists Flow and temperature errors If the flow reading is lost or goes negative then the Flow Reading screen will be displayed to indicate the nature of the fault A signal strength of less than 40 indicates poor set up of the instrument and the installation should be checked or possibly moved to a different site A negative flow is indicated by an being displayed on the top line instead of a lf the temperature difference exceeds the upper limit or the reading from either of the sensors is lost then the Temperature Values screen will be displayed Warnings These generally advise the user that the data entered is out of the specified range 1 When an invalid Pipe ID is entered the warning message shown below is displayed prompting the user to enter a value between 20 and 110mm 2 When programming a Frequency Pulse output the frequency is limited to the range 1 to 200 Hz If an invalid value is entered then the following warning message is displayed Issue 1 2 Page 28 Micronics U1000 HM User Manual 3 When programming a Volume Pulse output the pulse width is limited to the range 3 to 99ms lf an invalid value is entered then the following warning message is displayed 4 When programming the Zero Cut off this is limited to the range
17. erature sensors completed The sensors have self adhesive pads to locate them they are then anchored using similar banding to that used to mount the flow transducers The banding must not be over tightened or the sensors will be damaged If the sensors are located under pipe lagging then ensure this does not put a strain on the sensor cables Tie down the sensor cables after the sensor has been installed The temperature sensors must be used with the cable length supplied Extending or shortening the cables will negate the calibration of the Sensors Issue 1 2 Page 12 Micronics U1000 HM User Manual 5 6 U1000 HM interface cable The U1000 HM interface cable supplied is a 6 core cable and is shown in Figure 8 Un insulated screen Power Pulse Optional Modbus 2 an ai a interface Figure 8 U1000 HM Interface Cable The polarity of the wires is as follows E 12 24V Input E 12 24V Return Pulse Output E Pulse Return The un insulated wire is the connection to the screen of the cable and should be earthed for full immunity to electrical noise 5 7 Connecting the U1000 HM to the Supply The U1000 HM will operate within the voltage range 12 24V ac dc Connect the external power supply to the Brown and Blue wires of the six core cable For full compliance with EMC regulation a 12V supply is recommended for domestic and light industrial applications 5 8 Pulse Output connection The isolated pulse outp
18. he Baud rate is set to 38400 slower Baud rates can be set Issue 1 2 Page 4 Micronics U1000 HM User Manual 3 How does it work The U1000 HM is a clamp on ultrasonic flowmeter that uses a multiple slope transit time algorithm to provide accurate flow measurements 11 T2 m s Principle of Operation Figure 1 Principle of Transit Time operation An ultrasonic beam of a given frequency is generated by applying a repetitive voltage pulse to the transducer crystals This transmission goes first from the Downstream transducer to the Upstream transducer red as shown in the upper half of Figure 1 The transmission is then made in the reverse direction being sent from the Upstream transducer red to the Downstream transducer blue as shown in the lower half of Figure1 The speed at which the ultrasound is transmitted through the liquid is accelerated slightly by the velocity of the liquid through the pipe The subsequent time difference T1 T2 is directly proportional to the liquid flow velocity The two temperature sensors measure the difference in temperature between inlet and outlet of the flow system being monitored The temperature difference in combination with the volume of water that has flowed through the system is then used to calculate the energy transferred to or from the water Issue 1 2 Page 5 Micronics U1000 HM User Manual 4 User interface Figure 2 illustrates the U1000 HM user interface comprising e
19. o 110mm 4 and a maximum wall thickness limit of 9mm for metal pipes and 10 5mm for plastic e Simple to install temperature sensors e Compact rugged and reliable the U1000 HM has been designed to provide sustained performance in industrial environments U1000 standard features include 2 line x 16 character LCD with backlight 4 key keypad Isolated pulse output Simplified factory configured guide rail and transducer assembly Dual PT type temperature sensors standard cable length 5m Continuous signal monitoring Password protected menu operation for secure use Operates from external 12 to 24Vac or dc power supplies Small pipe adaptors Optional features Modbus RTU data output Typical applications Domestic building services and industrial water systems heat meter Issue 1 2 Page 3 Micronics U1000 HM User Manual 2 Quick start procedure The following procedure details the steps required to set up the heat meter See the sections referred to if you are unsure about how to install the instrument 1 Establish a suitable location for the flow meter on a straight length of pipe clear of bends and valves or similar obstructions See Sections 5 and 5 1 Determine the pipe internal diameter and material Either use the table in the manual or power up the instrument to determine the correct separation code See Sections 5 2 or 6 4 Set the sensors to the correct separation by adjusting the sensor holding
20. onics U1000 HM User Manual SETUP MENU Inches amp Invalid amp e Invalid amp a Valid amp Valid amp Valid amp Vel amp m s Flow amp Flow amp m3 amp e Litres amp A Impgal amp 4 USgal amp H Figure 15 Setup Menu Issue 1 2 Page 21 Micronics U1000 HM User Manual PULSE OUTPUT MENU Off amp e Test mode press V or A to generate a 20ms pulse Low Flowl Alarm Energy amp Freq amp ex Volume amp Invalid amp e Valid amp Valid amp Invalid amp Valid amp Valid amp Valid amp H MODBUS MENU Invalid amp valid amp Figure 16 Pulse output and Modbus menu Issue 1 2 Page 22 Micronics U1000 HM User Manual CALIBRATION MENU Invalid amp V To Set Valid amp A To Clear Invalid amp Valid amp ei No amp TOTALISER MENU Off amp H a Figure 17 Calibration and totaliser Menu Issue 1 2 Page 23 Micronics U1000 HM User Manual 9 Diagnostics Menu The diagnostics menu provides some additional information about the heat meter and its setup The menu can be accessed by pressing the key from flow reading screen The menu shown below describes the various diagnostics items DIAGNOSTICS MENU Pres To exit the Diagnostics N B The key board is less responsive in the Diagnostics Menu and longer key presses are required The Estima
21. ral procedure for changing menu settings 8 1 1 Selection menus When a password controlled menu is selected the procedure for changing the default setting is the same for all menus For example consider the Flow Units menu shown in Figure 13 Figure 13 Flow Units menu The default value l min will blink to indicate that this is the current setting To change to l s press the key Now the l s units will blink to indicate that this is now the selected units Press the key to confirm the change The only exceptions to this are in the Pulse output menu where the CJ and keys are used to scroll through the options Volume Frequency Energy and the Energy per Pulse values 8 1 2 Data entry menus Menus containing a numeric value can be altered using the same method used to input the pipe ID 8 2 User Password controlled menu structure While in any of the information screens pressing the key will access the user password menu Enter 71360 using the procedure explained in section 6 1 to enter the password Issue 1 2 Page 19 Micronics U1000 HM User Manual The flow chart shown in Fig 14 shows the user password menu structure To skip over any menu item that should remain unchanged simply press the key 71360 MENU Invalid amp OR No input for 10 seconds Gaal a Modbus Menu gt Pulse Output Menu Calibration Menu Totaliser Menu Figure 14 Main Menu Issue 1 2 Page 20 Micr
22. s of the EMC directive and with the principal elements of the safety objectives of the Low Voltage Equipment directive and that the following standards have been applied BS EN 61010 1 2001 Safety requirement for electrical equipment for measurement control and laboratory use Part 1 General requirements BS EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements Part 1 General requirements BS EN61326 2 3 2006 Electrical equipment for measurement control and laboratory use EMC requirements Part 2 3 Particular requirements Test configuration and performance criteria for transducers with integrated or remote signal conditioning The technical documentation required to demonstrate that the products meet the requirements of the Low Voltage Equipment directive has been compiled and is available for inspection by the relevant enforcement authorities The CE mark was first appliedin 2012 Signature Printed Name Michael Farndon Title Managing Director Date 2 August 2012 Attention The attention of the specifier purchaser installer or user is drawn to special measures and limitations to use which must be observed when these products are taken into service to maintain compliance with the above directives Details of these special measures and limitations to use are available on request and are also contained in the product manuals Registered Office Micronics Limited Knaves Beech Business
23. screws so the sensor can slide in the slot See Section 5 2 5 Select any adaptors needed for pipes with an outside diameter of less than 60mm inside diameter will typically be less than 50mm See Section 5 4 6 Grease the sensors and mount the guide rail on the pipe using the banding provided then remove the sensor holding screws See Section 5 3 7 Wire the electronics up to a 12 to 24V ac or dc power supply via the Blue and Brown wires See Section 5 7 8 Plug in the temperature sensors and place them touching each other Wait for the temperature readings to stabilize indicated by no change for 30 seconds Then zero the temperature sensors See Section 5 5 9 Attach the temperature sensors on to the pipe using the self adhesive pads Then use the supplied banding to secure the sensor to the pipe Don t overtighten the banding The sensor must be in good thermal contact with the pipe and the leads must not be under any strain See Section 5 5 10 Plug in the flow sensors and clip the electronics assembly on to the guide rail 11 Power up the instrument and check that flow and temperature readings can be obtained See Sections 6 and 7 1 12 Once good readings have been obtained any further changes such as selecting different units can be made via the User Menu See Section 8 13 If the Modbus output is being used then the address of the instrument must be set using the User Menu See Section 8 The default address is 1 and t
24. ted TA Time of Arrival and Actual TA show the theoretical and measured transit times These values should be within several per cent of each other If the actual value is displayed as 9999 99 then a usable signal could not be detected The gain on line one is an indicator of the signal strength A good signal should have a gain of between 600 to 970 The number in parentheses is the switch setting and should be x1 or x10 Gains of X100 show that the received signal is too small to be used The second line shows the current time differential between the upstream and downstream signals The unit s software version is shown on line 1 Line 2 shows the unit s serial number This screen will be displayed if the Pulse output is on and show data related to the mode of operation This includes a live display of the Frequency output The Selected pipe material The required sensor separation n ae een s Figure 18 Diagnostics Menu Issue 1 2 Page 24 Micronics U1000 HM User Manual 10 Relocation of guide rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure 1 2 gn Remove complete assembly from the pipe Insert a small screwdriver in the hole at the end of the guide rail moulding and lever up the clip holding the electronics assembly by pressing down on the screwdriver as shown below Repeat 2 on the other end and then pull off the electronics unit
25. ts no responsibility or liability if product has not been installed in accordance with the installation instructions applicable to the product Issue 1 2 Page 7 Micronics U1000 HM User Manual 5 1 Preparation 1 Before attaching the transducers first ensure that the proposed location satisfies the distance requirements shown in Figure 3 otherwise the resulting accuracy of the flow readings may be affected 2 Prepare the pipe by degreasing it and removing any loose material or flaking paint in order to obtain the best possible surface A smooth contact between pipe surface and the face of the transducers is an important factor in achieving a good ultrasound signal strength and therefore maximum accuracy 5 2 Sensor separation The sensor must be positioned at the correct distance for the pipe size and type they will be used on The table below gives the typical separation code for a given pipe material and Inside diameter based on a 4mm wall thickness If the wall thickness is significantly different from this value then the separation may need to be one code higher or lower The instrument displays the required separation after the pipe internal diameter and material are entered Pipe ID range Pipe material Plastic and Separation Copper a2 25 30 20 22 B2 3742 29 34 Az 4348 3540 Bs 5560 4752 D2 6165 53 58 Ba 7277 65 70 ps 7883 7176 E3 9095 8388 pa 96 101 8994
26. ut is provided by a SPNO MOSFET Relay which has a maximum load current of 500mA and maximum load voltage of 48V AC The relay also provides 2500V isolation The pulse output is available at the White and Green wires Electrically this is a volt free contact closure 5 9 Modbus connections Optional The Red and Black wires provide an optional Modbus interface over a twisted pair cable The physical connection is R8485 Issue 1 2 Page 13 Micronics U1000 HM User Manual 5 10Cable Screen For full immunity to electrical interference the screen of the cable should be connected to Earth 6 Powering up for the first time Powering up for the first time will initiate the sequence shown in Figure 9 Figure 9 initial power up screens 1 The Micronics start up screen is displayed for 5 seconds 2 The user enters the pipe ID and selects the material refer to section 6 1 3 On pressing enter in response to the Set Separation screen the U1000 HM then checks for a valid signal 4 lf a valid signal is found signal strength and flow magnitude are displayed The signal strength should be at least 40 for reliable operation The direction of flow when powered up will be set as that for positive flow The pulse output will relate to the flow in this direction If the flow is reversed then the flow rate will still be displayed but the activity indication will change from an asterisk to an exclamation mark and no pulses will be generated
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