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Arkon MAG 910 Operating Instructions Manual

Magnetic – inductive flowmeter compact version
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MAG 910
MAGNETIC – INDUCTIVE FLOWMETER
COMPACT VERSION
Operating Instructions
10/2003

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  • Page 1 MAG 910 MAGNETIC – INDUCTIVE FLOWMETER COMPACT VERSION Operating Instructions 10/2003...

  • Page 2: Table Of Contents

    Electromagnetic Flowmeter M-910 Basic information _______________________________________________________ 4 Basic features _______________________________________________________________4 Standards and approvals_______________________________________________________4 Warranty ___________________________________________________________________5 Preparing for start up ____________________________________________________ 6 Inspecting contents of the package ______________________________________________6 Fuse replacement ____________________________________________________________6 Power supply ________________________________________________________________7 Installation ____________________________________________________________ 8 Sensor location ______________________________________________________________8 Electrical connection ________________________________________________________11 3.2.1 Compact version ______________________________________________________________ 11 Sensor grounding ___________________________________________________________12...
  • Page 3 Electromagnetic flowmeter M910 5.2.2.4 Volume resolution (2.4 VOL. RESOL.) _________________________________________ 28 5.2.2.5 Flowrate direction (2.5 FLOW DIREC.) ________________________________________ 28 5.2.2.6 Low-flow cutoff (2.6 L.F.CUTOFF) ____________________________________________ 29 5.2.2.7 Moving average time constant (2.7 TIMECONST)_________________________________ 29 5.2.2.8 Time setting (2.8 TIME SET.)_________________________________________________ 29 5.2.2.9 Date setting (2.9 DATE SET.)_________________________________________________ 29 5.2.2.10...

  • Page 4: Basic Information

    Electromagnetic Flowmeter M-910 1 Basic information Basic features The inductive flow meter M-910 is designed to measure, indicate and record the instantaneous and total flow of the conductive media flowing through the sensor. The flow meter M-910 records both forward and reverse flows. As there are no moving parts in the flow profile the M-910 can be used to measure extremely dirty liquids containing solids.

  • Page 5: Warranty

    Electromagnetic flowmeter M910 Warranty Within the manufacturers general supply conditions, all material and manufacturing faults are covered by that. It is up to us whether the warranty obligation includes a repair free of charge or corresponding replacement. Place of the warranty obligation is Czech Republic. Further claims on compensation, especially for loss of production or resultant of damages, are strictly excluded.

  • Page 6: Preparing For Start Up

    Electromagnetic Flowmeter M-910 2 Preparing for start up Inspecting the contents of the package Basic package includes the following items: • Flanged sensor • Electronic Transmitter (can be integral or remote) • Spare fuse • Operating manual. • Calibration certificate •...

  • Page 7: Power Supply

    Electromagnetic flowmeter M910 Note: • T315mA fuse is used for 115/230 V version • 1A fuse is used for 24 and 48 V DC/AC versions • 2A fuse is used for 12 V DC/AC version Power supply From a power supply point of view the flowmeter is delivered in four basic versions: •...

  • Page 8: Installation

    Electromagnetic Flowmeter M-910 3 Installation Sensor location To avoid measuring errors due to gas/air entrainment or to a partly filled pipe, please observe the following: Horizontal (standard) mounting The sensor tube must always remain full. The best way to achieve this is to locate the sensor in a low section of pipe, see the following picture.
  • Page 9 Electromagnetic flowmeter M910 Vertical mounting When the sensor is mounted on a vertical section of pipe, the flow direction must be upwards. In the case of a downward flow direction, air bubbles can collect in the sensor and the measurement could be unstable and inaccurate.
  • Page 10 Electromagnetic Flowmeter M-910 Valves Suitable location of a shutoff valve is downstream of a sensor. Removal during maintenance If the application requires removal of the sensor for periodic maintenance, it is recommended to install a bypass section as the following drawing. Vibration To avoid mechanical damage protect both electronic unit and sensor against mechanical vibrations.

  • Page 11: Electrical Connection

    Electromagnetic flowmeter M910 Electrical connection Only a competent person may connect the flowmeter to the mains power supply. The flowmeter can be connected to the power supply with either a fixed power cable or with a flying lead cable and plug.

  • Page 12: Sensor Grounding

    Electromagnetic Flowmeter M-910 Sensor grounding To ensure the correct operation of the flowmeter an earthing connection between the sensor and pipeline must be made. The sensor is equipped with screw connection for an earthing wire. This screw has to be connected to the flange on the pipeline.

  • Page 13: Electronic Unit Description

    Electromagnetic flowmeter M910 4 Electronic unit description Front panel (display) RS232 connector RS232 port enables you to connect the flowmeter to a personal computer. Serial port is galvanically isolated from other electronic circuits. Display Two-row alphanumerical display is used for displaying all information. The instantaneous flowrate is displayed in upper row.

  • Page 14: Rear Panel (Inputs/Outputs)

    Electromagnetic Flowmeter M-910 Magnetic sensor All important displayed information can be read without opening the flowmeter. The sensor display can be activated by using a magnet. Activating the sensor (less than 3 seconds) using a magnet is equal to pushing the “UP”...

  • Page 15: Signal Terminals

    Electromagnetic flowmeter M910 Signal terminals Current loop Frequency output Impulse output Status output PLC input RS485 interface Power supply 4.3.1 Current loop output The 4 to 20 mA current loop can be set as a passive type between outputs 1, 2 (1 positive, 2 negative) or as an active type between outputs 2, 3 (2 positive, 3 negative).

  • Page 16: Frequency Output

    Electromagnetic Flowmeter M-910 4.3.2 Frequency output The frequency output is a galvanically isolated transistor NPN switch. Voltage drop on the switch is 1 V in the made status. Maximum switched voltage is 50 V. Maximum switched current should not exceed 100 mA. Positive output is on terminal 4, negative output is on terminals 5 and 7 (internally connected).

  • Page 17: Status Output

    Electromagnetic flowmeter M910 Note 2: Active impulse output uses the power supply of the current output. Total current take-off from this power supply (terminal nr. 1) must be less than 40 mA. Active impulse output is galvanically connected to current output. 4.3.4 Status output Status output is formed by relays.
  • Page 18 Electromagnetic Flowmeter M-910 All flowmeters and computer are connected parallel using twisted pair cable. At each end of the communications line should be 470 Ω terminations. 910 _ 1 910 _ 2 910 _ 3 470 Ω 470 Ω Interconnection of three flowmeters and computer using RS485 bus Flowmeters are marked with numbers.

  • Page 19: Serial Port Rs232

    Electromagnetic flowmeter M910 Serial port RS232 The connector is located on the front panel and is accessible after removing the electronic unit cover. RS232 enables you to connect the flowmeter to a personal computer. RS232 interface is used for flowmeter configuration and calibration.

  • Page 20: Operation

    Electromagnetic Flowmeter M-910 5 Operation Main menu The flowmeter is in Main menu after the switching power on or after repeatedly pushing the ESC key. This entire menu can be operated with a magnetic without opening the housing. Short use of the magnet (less than 3 seconds) is equal to pushing “UP”...

  • Page 21: Datalogger

    Electromagnetic flowmeter M910 5.1.7 Datalogger Number of samples stored in datalogger and percentage used. Individual samples value can be read after pushing “RIGHT” key. In this submenu samples are read sequentially. Next sample (Flowrate with Date and Time) is displayed after pushing “UP” key.

  • Page 22: Frequency Output (1.2 Output F)

    Electromagnetic Flowmeter M-910 Fixed current output is adjusted to fixed value (4.000 … 20.000 mA) QI value represents a flowrate for a current of 20 mA and can be set independently to the nominal diameter of the sensor. QI value can be changed in “Setup mode” after selecting modes “b”, “c”, “d” or “e”. Fixed current value can be changed in “Setup mode”...

  • Page 23: Impulse Output (1.3 Output P)

    Electromagnetic flowmeter M910 QF value represents flowrate for frequency 1000 Hz and can be set independently to the nominal diameter of the sensor. QF value can be changed after selecting modes “b”, “c” or “d”. Fixed frequency value can be changed after selecting mode “m”.

  • Page 24: Pulse Width (1.4 Pulse Width)

    Electromagnetic Flowmeter M-910 Mode k) with non-zero hysteresis: PF1 PF1+H Mode l) with non-zero hysteresis: PF1 PF1+H QP value represents volume for 1 impulse and can be set independently to the nominal diameter of sensor. QP value can be changed after selecting modes “b”, “c” or “d”. Following values are pre-set: Impulse output standard factory setting: Mode „Positive flowrate“.

  • Page 25: Plc Digital Input (1.6 Input)

    Electromagnetic flowmeter M910 On<F1 output is on, when flowrate is lower than PF1, otherwise it is off. If setting of flow limit is chosen, hysteresis H can be set too. Hysteresis is a tolerance field on one side of flow limits PF1 and PF2.

  • Page 26: Low Flowrate Limit (1.7 Limit Pf1)

    Electromagnetic Flowmeter M-910 5.2.1.7 Low flowrate limit (1.7 LIMIT PF1) Function enables you to set low flowrate limit for some functions of digital outputs after pressing ENTER key. See “Frequency output”, “Impulse output” and “Status output”. With the “Up” and “Right” keys any value between +/- flowrate can be set.

  • Page 27: Rs485 Address (1.B Rs485 Addr.)

    Electromagnetic flowmeter M910 5.2.1.11 RS485 address (1.B RS485 ADDR.) Function enables to set parameter address of RS485 interface after pressing ENTER key. With the “Up” and “Right” keys any value between 0 and 255 can be set. To change the current valid value to the new value press the ENTER key.

  • Page 28: Volume Units (2.3 Volume Unit)

    Electromagnetic Flowmeter M-910 Resolution 0.0000 for Q < 3.0000 100% 0.000 for 3.000 ≤ Q < 30.000 100% 0.00 for 30.00 ≤ Q < 300.00 100% 0.0 for 300.0 ≤ Q < 3000.0 100% ≥ 3000.0 0 for Q 100% 5.2.2.3 Volume units (2.3 VOLUME UNIT) Function enables to set volume units after pressing the ENTER key.

  • Page 29: Low-Flow Cutoff (2.6 L.f.cutoff)

    Electromagnetic flowmeter M910 5.2.2.6 Low-flow cutoff (2.6 L.F.CUTOFF) Function enables you to set limit for suppressing low flowrates after pressing ENTER key. With the “Up” key and “Right” any value between +/- Q flowrate can be set. Limit is displayed in the same format as the flowrate. To change the current valid value to the new value press the ENTER key.

  • Page 30: General Settings (3 General)

    Electromagnetic Flowmeter M-910 Following values are pre-set: Datalogger standard factory setting: Datalogger 5.2.3 General settings (3 GENERAL) For general settings configuration or for reading actual settings. After pushing “UP” key next item is selected. After pushing “ENTER” key following submenu is displayed: 5.2.3.1 Diameter (3.1 DIAMETER) Flowmeters nominal diameter is displayed.

  • Page 31: Basic Menu Password (3.7 Password Mn.)

    Electromagnetic flowmeter M910 Current Loop Test standard factory setting: C.Loop Test 5.2.3.7 Basic Menu Password (3.7 PASSWORD MN.) Function enables you to enter a new password for basic menu access after pressing the ENTER key. With the “Up” and “Right” key any password in range between 00000 and 99999 can be set. To change the current valid password to the new password press the ENTER key.

  • Page 32: Calibration Point 2 (4.3 Cal.point 2)

    Electromagnetic Flowmeter M-910 nominal value to the new nominal value press the ENTER key. After entering the nominal value a new calibration constant can be set. ESC key discards changes. Following values are pre-set: Calibration point 1 standard factory setting: Nominal point 10% of required Q Cal.
  • Page 33 Electromagnetic flowmeter M910 Following values are pre-set: Calibration Password standard factory setting: PASSWORD CA. 10000 Operation manual...

  • Page 34: System Control

    Electromagnetic Flowmeter M-910 6 System control The flowmeter includes serial lines RS232 and RS485. RS232 connector is located behind the front panel. RS485 terminals are behind the back panel. For the remote control to work properly, bus parameters must be set in the setup menu.

  • Page 35: Command List

    Electromagnetic flowmeter M910 Command list Device identification IDN? Response contains flowmeters model type number. Example RS232: If query „IDN?<cr>” is sent, flowmeter returns response in format „M910-Vxxxx<cr>“. Example RS485: If query „#00IDN?<cr>” is sent, flowmeter returns response in format „>00M910-Vxxxx<cr>“. Current output mode setting SIM(?)<CPD>...
  • Page 36 Electromagnetic Flowmeter M-910 Impulse output mode setting SPM(?)<CPD> { 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 } Following modes can be set: • • Pos.Flow •...
  • Page 37 Electromagnetic flowmeter M910 Command „SIM1<cr>” sets mode “Dose” for digital input. If query „SIM?<cr>” is sent, flowmeter returns response in format „1<cr>”. Current output constant QI SCO(?)<DNPD> Command sets constant QI, which represents flowrate value for current 20 mA. <DNPD> It represents required flowrate in actual units.
  • Page 38 Electromagnetic Flowmeter M-910 Command sets impulse width in range between 10 and 2500 ms. <DNPD> It represents impulse width in milliseconds. Any value in range between 10 millisecond and 2500 milliseconds can be set. M910 confirms execution with string „Ok<cr>”. In case of query M910 returns set value in actual units. Example: Command „SPT100<cr>”...
  • Page 39 Electromagnetic flowmeter M910 It represents flowrate for high limit value PF2 in actual unit. M910 confirms execution with string „Ok<cr>”. In case of query M910 returns set value in actual unit. Example: Command „SF210.5<cr>” sets low limit value to 10.5. After query „SF2?<cr>” flowmeter returns string „10.500000<cr>”.
  • Page 40 Electromagnetic Flowmeter M-910 • 1 0.0 • 2 0.00 • 3 0.000 • 4 0.0000 M910 confirms execution with string „Ok<cr>”. Example: Command „FFR3<cr>” sets flowrate resolution “0.000”. If query „FFR?<cr>” is sent, flowmeter returns response in format „3<cr>”. Volume resolution FVR(?)<CPD>...
  • Page 41 Electromagnetic flowmeter M910 Command sets conversion constant for flowrate user unit with respect to [l/s]. <DNPD> It represents a constant, which is calculated as a ratio between flowrate in user unit and flowrate in basic unit ( [l/s] ). For example constant for [m3/h] is 3.6. M910 confirms execution with string „Ok<cr>”. In case of query M910 returns set constant.
  • Page 42 Electromagnetic Flowmeter M-910 Example: Command „FTC6<cr>” sets time constant “6“ seconds. After query „FLF?<cr>” flowmeter returns „6<cr>”. Internal self-test (flowrate simulator) FIS(?)<CPD> { 0 | 1 } Internal self-test can be switched: • 0 Off • 1 On M910 confirms self-test state with string „Ok<cr>”. Example: Command „FIS0<cr>”...
  • Page 43 Electromagnetic flowmeter M910 Auxiliary volume counter Reset CLRAV Command resets “Auxiliary volume counter”. M910 confirms execution with string „Ok<cr>”. Example: Command „CLRAV<cr>” resets the Auxiliary volume counter. Min. / Max. flowrates Reset CLRMM Command resets “Min. Flowrate” and “Min. Flowrate” values. M910 confirms execution with string „Ok<cr>”.
  • Page 44 Electromagnetic Flowmeter M-910 Auxiliary volume reading RVA? Response contains actual Auxiliary volume counter value. Example: If query „RVA?<cr>” is sent, flowmeter returns response in format „100.000<cr>“. Resolution is designed by Setup menu. Maximum flowrate value reading RMX? Response contains maximum Flowrate value and time & date of this flowrate. Example: If query „RMX?<cr>”...
  • Page 45 Electromagnetic flowmeter M910 Datalogger step DST(?)<CPD> { 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 } Datalogger can be set: • 0 Datalogger is Off • 1 Datalogger sampling rate is 5 minutes. •...
  • Page 46 Electromagnetic Flowmeter M-910 M910 confirms execution with string „Ok<cr>”. Example: Command „DCLR<cr>” clears all data in datalogger. Internal temperature Response contains internal temperature in flowmeters case. Accuracy of temperature value is not guarantied. It’s informative value only. Example: If query „IT?<cr>” is sent, flowmeter returns response in format „35.2<cr>“ for internal temperature 35.2 °C. Service information ISR? Response contains service information (serial number, power supply voltage and power supply frequency).

  • Page 47: Error Messages

    Electromagnetic flowmeter M910 7 Error messages When any error occurs, the flowmeter will display an error message. Errors can arise because of: • Incorrect control, i.e. faulty connection to the flowmeter, grounding, etc., • Flowmeter failure In case of any error, the error message is displayed on the display for approx. 1 second. After switching on, an internal test of the hardware is performed.

  • Page 48: Maintenance

    Hidden faults can cause different symptoms. Usually, they cause instability of some parameters. Hidden defects can be caused by unacceptable distortion, degraded insulation etc. In this case contact Arkon. The flowmeter can have “hidden defects”, when correct operation rules are not applied. In this case, the fault can be caused by wrong installation.

  • Page 49: Application Information

    Electromagnetic flowmeter M910 9 Application information Weight and dimensions Flowmeter weight and dimensions depend mostly on the version (remote or compact) and diameter of the pipe. 9.1.1 Electronic unit – compact version The pictures below show dimensions of the electronic unit for the compact version. Dimensions are in millimetres. Weight: 3 kg 9.1.2 Sensor...

  • Page 50: Used Materials

    Electromagnetic Flowmeter M-910 DN (mm) PN (bar) D (mm) A (mm) L (mm) Weight (kg) 1015 1010 Table 1: M910 dimensions and weights – DIN flanges Used materials Electromagnetic flowmeter is made from materials, which meet international standards and conventions. Liner: Hard rubber as standard...

  • Page 51: Flowrate Versus Diameter

    Electromagnetic flowmeter M910 Flowrate versus diameter The choice of flowrate for an electromagnetic flowmeter depends on the diameter of the sensor. The higher pipe diameter, the higher flowrate can be measured. A determining parameter for flowrates is maximum velocity of the liquid.

  • Page 52: Type Plate

    The type plate is located on the sensor. The following information is on the plate: Flow direction Type DN – nominal diameter (10 … 800 mm) PN – nominal pressure (6 … 25 x100kPa) MAG910-V0000 ARKON FLOW SYSTEMS DN / PN: 100 / 16 Serial number S.n.: 310541 arkon@rtm-expolink.com...
  • Page 53 Type plate on the converter: Flow direction Type DN – nominal diameter (10 … 800 mm) PN – nominal pressure (6 … 25 x100kPa) MAG910-V0001 Serial ARKON FLOW SYSTEMS DN / PN: 100 / 16 number S.n.: 310541 arkon@rtm-expolink.com Year: 2003 Production Year Tel./Fax: ´+420-545175684...

  • Page 54: Technical Data

    Electromagnetic Flowmeter M-910 11 Technical data Nominal size DN10 to DN800 Nominal pressure PN10 to PN25 (depending on nominal size) Flow range 0.1 to 10 m/s (0.01 to 5000 l/s) / (0.03 to 18000 m3/h) • 0.5 % (0.5 to 10 m/s) of reading value Accuracy •...

  • Page 55: Ordering Information - Options

    Power Supply Version Name of Product Version: Power Supply: Compact - C 12V DC - 12D Remote - R 24V DC - 24D 115-230V AC - 220A 12.1 Example of order 1 pc. Mag 910 & sensor C800HR16D220ASS Operation manual...

  • Page 56: Terminology

    Electromagnetic Flowmeter M-910 13 Terminology Special symbols and terms. Flowrates: - minimum applicable flowrate (the least flowrate which has guaranteed measuring accuracy – depends on diameter – see table 2 M910 flowrates). - recommended minimum flowrate (least flowrate which has the best measuring accuracy – depends on diameter –...

  • Page 57: Appendix A Measuring Principle

    Electromagnetic flowmeter M910 Appendix A Measuring principle The flowmeter is designed for electrically conductive fluids. Measurement is based on Faraday’s law of induction, according to which a voltage is induced in an electrically conductive body, which passes through a magnetic field. The following expression is applicable to the voltage: U = K x B x v x D where:...

  • Page 58: Appendix B M910 Menu Structure

    Electromagnetic Flowmeter M-910 Appendix B M910 Menu structure There are three types of menu for parameters setting: Setup menu Calibration menu Service menu Access to these menus is enabled after pushing the key “ENTER” from the Main menu. Each menu has its own password and you can enter this menu using an appropriate password only.
  • Page 59 Electromagnetic flowmeter M910 INPUT/OUTPUT submenu structure RS485 address (0 … 255) RS485 Addr. Baud rate (1200, 2400, 4800, 9600, RS485 B.R. 19200, 38400) Flowrate for hyst. Hysteresis Flowrate for F2 Limit F2 Flowrate for F1 Limit F1 Clear Volume Digital input Dose Dosing volume (PLC)
  • Page 60 Electromagnetic Flowmeter M-910 FLOWMETER submenu structure Sampling rate in (OFF, 5, 10, 15, 30, 45, Datalogger minutes, 60, 120, 180, 240, CLR) datalogger clear Real time clock Date setting date setting Real time clock Time setting time setting Time for flowrate 1...20 sec Time constant moving average...
  • Page 61 Cal. Point 1 (flowrate). Number of Calibration 2 … 4 Number of Cal. points. Points Key ENTER Key ESC Arkon Flow Systems tel.: +420 545 175 834 fax: +420 545 175 684 e-mail: arkon@rtm-expolink.com web: www.arkon.co.uk www.rtm-expolink.com...

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