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OPERATING AND INSTALLATION MANUAL

CONVERTER

ML 252

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Summary of Contents for ML 252

Page 1: ...OPERATING AND INSTALLATION MANUAL CONVERTER ML 252...

Page 2: ...___________________________________pag 9 q How to access at the instrument functions ________________________________________________________ pag 10 User interface ____________________________________...

Page 3: ...ious notice The flow meter must be used for what it has been built for The improper use possible tampering of the instrument or parts of it and substitutions of any not original components makes the w...

Page 4: ...4 252_EN_IS_1_3_00 doc 125 112 97 OVERALL DIMENSIONS...

Page 5: ...pply frequency Max power Max Current LITIUM BATTERY 3 6 V 16 5 A h INPUT OUTPUT ISOLATION q Input output are insulated up to 500V q Port RS 232 NON is not insulated ENVIRONMENTAL CONDITIONS OF USE q T...

Page 6: ...als of preset time see MEASURE menu func 3 5 it allows a great saving of energy In this conditions the consumptions are Sampling time s Battery life n 1 battery years Battery life N batteries years 1...

Page 7: ...lated output Opto MOS q Maximum switching voltage 40 Vdc q Maximum switching current 100mA q Maximum Ron 70 Ohm q Maximum switching frequency loadRL 240 VOUT 24Vdc 32 Hz q Insulation from other second...

Page 8: ...me plate q Electric connections must be done as described at page 8 10 q Ground connections must be done Verify periodically q The integrity of the power supply cables wiring and other electrical part...

Page 9: ...9 252_EN_IS_1_3_00 doc batteries pack Batteries Power Supply q Batteries quantity N 1 standard N 1 optional SWITCH ON DEVICE Switch battery 1 ON OFF SWITCH 1 2 INSTRUMENT START UP Switch battery 2...

Page 10: ...user you can proceed programming all the functions up to L2 security level entering its code whenever you enter the Main menu ATTENTION take note very carefully of the customised code you have chosen...

Page 11: ...ected decimals Beyond this value the totalise are reset Alarm ON Flow rate visualization Direct Reverse totalizer Flow rate and direct reverse totalizer visualization Speed of fluid Alternate pages Al...

Page 12: ...CONVERTER LED INTERPRETATION Always switch off not power supply or trouble circuit Always switch on firmware not valid Continuos quickly flash normal operation in continuoe sampling mode Slowly flash...

Page 13: ...G 1 SECOND It moves the cursor rightward on the input field It goes to the following subject of the menu It change the display of the process data LONG PRESSING 1 SECOND It moves the cursor leftward o...

Page 14: ...2 Low flow zero threshold 0 25 of full scale value 3 4 Automatic change of scale 3 5 Energy saving 3 3 Enable every hour an internal cycle of calibration The measure it s stopped for 8 15sec 4 1 Maxim...

Page 15: ...alizer difference between direct and reverse 8 9 Visualizes the values of the partial totalise in the unit of selected currency 8 10 Choice of the numbers of decimals for the visualization currency va...

Page 16: ...r auto test 10 3 Flow rate simulation enabling 11 1 Level 2 access code enter 11 4 Load user data saved 11 5 Save user data 11 6 Visualisation of the total operation hours of the converter functionnot...

Page 17: ...he principal functions q Through the Main menu where is possible to access to all function with access code 2 Below are brought some examples relating to the change of the value in the function 2 1 Fs...

Page 18: ...m 4dm s to 5dm s from Main Menu quick start menu enable Enter in the Quick start menu Access to the Main Menu Access to the Scale menu Access to the function Fs1 Change the value Confirm the new value...

Page 19: ...ou are sure the a m conditions are fulfilled press for more than one second the key will start one counter for 60 s after that check if the zero is correct otherwise repeat the operation again Press t...

Page 20: ...2 8 2 9 Minimum maximum value for input 4 20mA I IS bar XXX XX Setting the minimum maximum value for external device with 4 20mA output There are four fields to fill in to set this parameter from lef...

Page 21: ...to on off output 1 2 OUT 1 2 XXXXXX Choice of the function corresponding to digital Output 1 2 The functions are listed in the table below MENU 8 DISPLAY POS 8 2 8 3 8 4 8 5 Reset totalizer T P RESET...

Page 22: ...following question EXECUTE press the key to proceed Press any other key to delete the operation POS 10 2 Autotest function enable SELF TEST Meter auto test function This function stops the normal fun...

Page 23: ...ry data Any previous programming is cancelled getting back to the manufacturer s standard values POS 11 4 User pre settings loading LOAD USER PRES This function recalls the values saved from the user...

Page 24: ...Check the status of the cables connecting the sensor to the converter CURR LOOP OPEN The 0 4 20mA output on board or the optional one are not correctly closed on a valid load Verify the load is applie...

Page 25: ...IN ACCORDANCE WITH LOCAL REGULATIONS BATTERY SUBSTITUTION verify the absence of power supply set in stand by the instrument menu 10 extracts the battery group unscrewing the fixing screw suitable in...

Page 26: ...26 252_EN_IS_1_3_00 doc...

Page 27: ...27 252_EN_IS_1_3_00 doc...

Page 28: ...252_EN_IS_1_3_00 doc The last three character of file name identify the sw version which the manual is refer the sw version is visualized during switch on of converter...

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