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MAXICAL

®

 III

5511-229 GB/98.06/Rev. B1

20

4.5.2Flow meters with analogue output

Using flow meters with analogue output (4 … 20 mA) an I/F
converter is needed to convert the measuring current to flow
pulses.

Kamstrup’s DIN rail module type 79-68-411 is suitable for this
purpose.

In this case flow meter 9-10-11 is to be used together with CCC
codes 3xx.

4.6 Selecting flow meter inputs and pulse outputs

Before opening the unit, disconnect the supply! Remove the
terminals plugs nos. 27 and 28 at the rear.

Remove the four screws that hold the rear plate in position and
MAXICAL

®

 III’s print switch is accessible on the middle PCB.

Note:
If you remove the PCB, MAXICAL

®

 III’s internal clock will loose

time. The clock can be set via MULTITERM III hand-terminal or
via the computer program, type no. 66-99-210.

Red

Yellow

Blue

Содержание MAXICAL III

Страница 1: ...MAXICAL I I I 5511 229 GB 98 06 Rev B1 1 MAXICAL III User s Manual 5511 229 Rev B1 ENGLISH...

Страница 2: ...MAXICAL III 5511 229 GB 98 06 Rev B1 2...

Страница 3: ...s 1 8 13 4 3 1 Average Measurement 14 4 4 Flow Meter Input 9 11 16 4 5 Flow Meter Input 75 76 18 4 5 1 Flow Meter Connection 18 4 5 2 Flow meters with analogue output 20 4 6 Selecting flow meter input...

Страница 4: ...r Requirements 44 11 2 Installing the Software 45 11 3 Connecting MAXICAL III to the Computer 45 11 4 Reading MAXICAL III s Set up 46 11 5 Partial Programming 46 11 6 Total Programming 46 11 7 Enterin...

Страница 5: ...The value is automatically corrected for density and enthalpy 4 wire technique is used for measuring and adjusting the temperature ensuring optimal accuracy and reliability The flow meter input compr...

Страница 6: ...st average of 1 120 minutes actual values recorded over the last 24 hour period The average period can be programmed Depending on the programming either peak power or peak flow will be dis played 2 Th...

Страница 7: ...ntervals depending on the configuration selected based on the no of pulses emitted by the flow meter during the given period of time MAXICAL III is configured to an average flow and peak value if a fl...

Страница 8: ...4 wire screened cable used to connect the sensors to MAXICAL III to ensure optimal preci sion The cable screen must be connected at the MAXCIAL III and not at the sensor housing In stand by mode i e w...

Страница 9: ...return temperature has been less than 0 C or more than 182 C for 10 20 minutes 8 Check the temperature sensor in the flow pipe The flow temperature has been less than 0 C or more than 182 C for 10 20...

Страница 10: ...input terminals 10 11 2 9 Tariff Functions MAXICAL III features several tariff functions Regardless of the tariff type the total thermal energy will always be accumulated in the primary register Furt...

Страница 11: ...included in all versions NB MAXICAL III will display an information code 012 when delivered as temperature sensors aren t connected Please refer to chapters 2 6 and 14 4 3 Panel Installation 19 Rack v...

Страница 12: ...rallel to supply or mains current cables Parallel cabling can only be advised if the cables are kept at least 25 cm apart COMBITEMP temperature sensors may only be used in direct installation when the...

Страница 13: ...must not be connected to the temperature sensors The cable used should have a cross sectional area of at least 0 5 mm2 when the difference in length between the flow and return sensor cables is up to...

Страница 14: ...ovided the difference in length between the flow and return sensor cables as shown in the diagram are strictly observed the error increment on the differential temperature will be less than 0 02 K 4 3...

Страница 15: ...sors are connected both in series and parallel so that the original sensor characteris tics are maintained This method can be used with both the Pt100 and Pt500 versions of MAXICAL III note however th...

Страница 16: ...connected in series thus assuming Pt500 characteristics This method may only be used with the Pt500 version of MAXICAL III As with example 1 only paired sensors sets should be used 4 4 Flow Meter Inp...

Страница 17: ...w The pulse duration must be larger than 0 5 msec and intervals between pulses larger than 10 msec The input frequency must not exceed the precounter however 100Hz please refer to the CCC tables in ch...

Страница 18: ...ation CCC 300 and preprogrammed Qmax The internal flow switch must be set at 75 76 please refer to chapter 4 6 If the CCC code lies between 300 and 303 the frequency output from the flow meter must be...

Страница 19: ...MAXICAL I I I 5511 229 GB 98 06 Rev B1 19 NOTE In case of installation in noisy surroundings we recommend that screened cable is used as shown in the installation drawings...

Страница 20: ...is to be used together with CCC codes 3xx 4 6 Selecting flow meter inputs and pulse outputs Before opening the unit disconnect the supply Remove the terminals plugs nos 27 and 28 at the rear Remove t...

Страница 21: ...two flow meter inputs refer to chapters 4 4 and 4 5 Selecting Pulse Duration When you take delivery of MAXICAL III pulse outputs for energy and water 16 19 will be set at 0 1 sec You can increase the...

Страница 22: ...ter is used a diode has to be connected in parallel above the coil We recommend the type 1N4007 or similar Brown White Green Data outputs on terminals 62 64 are used for reading days data target date...

Страница 23: ...d for remote display and registration When programming MAXICAL III select the fourth output terminal 86 87 as either return line or differential temperature All outputs have 4 mA corresponding to zero...

Страница 24: ...d e g if the sensors are faulty or the supply has been interrupted the relay will switch to terminals 91 92 The relay limit is a programmable limit switch You can select either power flow rate flow te...

Страница 25: ...0 Input Pt500 Input No analogue and relay module required Analogue Relay module No Com module required No sensors required Pt500 pocket sensor set w 1 5 m cable Pt100 pocket sensor set w 0 5 m cable Q...

Страница 26: ...or by a service engineer Programming is divided into three groups PROG CONFIG and DATA Legal measuring parameters PROG may only be changed when the program block is V 0 A B C C C Prog No Flow meter pl...

Страница 27: ...3886 0 3 2 2 0 1 0 01321 75 7 1 0 GWF 116 3000 26214 0 3 2 2 0 1 0 00333 300 0 0 6 GWF 117 269 292349 0 3 2 2 0 1 0 037174 26 9 1 5 Brunata 118 665 118258 0 3 2 2 0 1 0 015037 66 5 1 5 Aquastar 119 10...

Страница 28: ...0 1 0 02 50 3 3 5 UF II 152 1194 658643 2 1 1 0 1 0 083752 11 94 10 GWF 153 1014 775562 2 1 1 0 1 0 098619 10 14 15 GWF 156 594 132393 3 2 2 0 1 0 016835 59 4 1 5 Metron 157 3764 208932 2 1 1 0 1 0 0...

Страница 29: ...lease refer to chapter 4 6 Qm can be entered by means of the programming software type no 66 99 210 Example A flow meter with Qm 40 m h corresponding to 5 kHz is connected In the software CCC is selec...

Страница 30: ...A A TL 2 B B TA 3 C C TL 3 D D Alarm limits A E E Customer ID No B F A F Current Date C G G Current Time D H H Quick Sum E I I Segment Test F J B J Either peak power or peak flow can be displayed Inf...

Страница 31: ...controlled tariff 9 Clock controlled tariff TL2 TL3 6 6 H Configuring Alarm Output H Alarm Output Alarm Limit 0 No active alarm 1 Power controlled alarm AL 2 Flow controlled alarm AL 3 Cooling alarm...

Страница 32: ...in either TA2 or TA3 parallel to the main register Every tariff function has a set of two tariff parameters TL2 and TL3 which are always used for the same tariff type i e the two tariff types cannot...

Страница 33: ...to enter a value for TL3 that is larger than TL2 As with the power controlled tariff the flow controlled tariff can be used as a basis for calculating the individual consumer s connection fee Addition...

Страница 34: ...2 plus main register tR TL3 Counting in TA3 plus main register When programming data make sure that the value you enter for TL3 is larger than TL2 The return temperature tariff can be used as a basis...

Страница 35: ...r only TAR2 Counting in TA2 plus main register TAR3 Counting in TA3 plus main register This tariff type is ideal for enforcing tariffing with different time zones This type of tariff is also particu l...

Страница 36: ...decimals However power and flow limits E 1 and E 2 H 1 and H 2 plus A1 and A2 vary both with respect to measuring unit and number of decimals depending on the flow meter code CCC no selected Addition...

Страница 37: ...1 4500 0 kW 1 45000 1 30000 l h 1 30000 115 0 1 300 0 kW 1 3000 1 2000 l h 1 2000 116 0 1 180 0 kW 1 1800 1 1200 l h 1 1200 117 0 1 450 0 kW 1 4500 1 3000 l h 1 3000 118 0 1 450 0 kW 1 4500 1 3000 l...

Страница 38: ...4500 1 3000 l h 1 3000 157 0 1 750 0 kW 1 7500 1 5000 l h 1 5000 158 1 1000 kW 1 1000 0 01 60 00 m3 h 1 6000 163 0 1 300 0 kW 1 3000 1 2000 l h 1 2000 164 0 1 450 0 kW 1 4500 1 3000 l h 1 3000 165 0 1...

Страница 39: ...amstrup s hand held terminal MULTITERM III 3 Read out Date MM DD The default is 1st June 06 01 However this can be changed using MULTITERM III Programming limits MM 01 12 DD 01 28 Data is read at midn...

Страница 40: ...ta 4 DTR Data Terminal Ready 5 SG Signal Ground Pulse count location of flow meter and measuring unit for accu mulated energy can be programmed via the optical read out head As this data A B CCC is co...

Страница 41: ...only CR LF 300 BAUD K A M 0 M C CR LF 300 BAUD ACK 0 0 0 CR LF 300 BAUD STX 0 0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 300 BAUD 6 8 D7 D6 D5 D4 D3 D2 D1 UNIT1 300 BAUD 6 26 D7 D6 D5 D4 D3 D2 D1 UNIT2 300...

Страница 42: ...k factor Water Water remainder 1 Water remainder 2 tF tR Prog No 1200 BAUD f Data read out of daily data 5 300 BAUD Customer No Read out date Energy Water TA2 TA3 Alarm Limit Peak time Peak Power flo...

Страница 43: ...of MAXICAL III where all the connection terminals are placed This means that both programming and data acquisition is possible via this data port The data section is galvanically separated by means o...

Страница 44: ...o install the program there must be at least 10 MB free on the hard disk and a 3 1 44 MB floppy drive The program can not run directly from the disks The computer must also have mouse and a free seria...

Страница 45: ...ram Manager select File and click with the left hand mouse button on run Insert disk 1 into the floppy drive probably drive A Write A Setup and press Enter The program will then lead you through the i...

Страница 46: ...legal measuring data A B CCC the meter s serial number and any Qmax are not accessible This block is used for all type approved meters that are to be verified 11 6 Total Programming When MAXICAL III i...

Страница 47: ...ays and analogue outputs for power and flow will show excessively high values for a few seconds Analogue measured values may have a slightly lower value with Read meter than with Programming due to th...

Страница 48: ...el section so that the front lid can be locked and sealed with thread and a plastic seal Panel doors with both sealable snap locks and sealing screws can be used MAXICAL III s front panel has a void l...

Страница 49: ...output on terminals 62 63 64 can be used for reading the Quick figure Please refer to chapter 10 2 Reseting the Quick figure It is not possible to reset the Quick figure The Quick figure is calculate...

Страница 50: ...res or 0 1 m Dt is the difference between flow and return temperatures tF tR Regardless of whether the verification is performed with sensors in a liquid bath or with precision resistors the temperatu...

Страница 51: ...0 version and approx 0 5 mA for the Pt500 version The measuring se quence will depending on the flow and return temperatures take from 10 to 120 msec The Measurements will be repeated at 5 second inte...

Страница 52: ...27 128 129 130 131 135 137 140 141 142 143 151 152 153 157 168 301 311 238 890 860 000 x 0 1 m3 005 007 95 520 344 000 x 1 m3 008 144 145 146 147 148 149 158 169 170 302 312 23 889 86 000 x 1 m3 171 1...

Страница 53: ...ipe Qn m3 h tF C tR C D D D D Dt C Flow meter Imp 10 Int QuickNOM 1 5 43 00 40 00 3 00 flow line 10 000 2 966 1 5 49 00 40 00 9 00 flow line 10 000 8 883 1 5 61 00 40 00 21 00 flow line 10 000 20 602...

Страница 54: ...igher than tR connection No accumulation of m3 No volume pulses Check flow meter connection Check flow meter direction Check flow meter setting read chapter 4 6 Incorrect accumulation of m3 Flow meter...

Страница 55: ...and loosen the display light plug to the left of the transformer The print can now be drawn completely out of the cabinet Use a soldering iron to remove the lithium cell and solder a new one in place...

Страница 56: ...to fitting a new analogue and relay module as the module is not programmed on delivery Use the programming software 66 99 210 MAXICAL III must be supplied with 230 V AC during program ming 14 4 Reseti...

Страница 57: ...truction in an approved manner There should be no risk of battery cables shorting during transport A small number of meters without batteries can be sent for industrial destruction or combustion Metal...

Страница 58: ...MAXICAL III 5511 229 GB 98 06 Rev B1 58...

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