KROHNE CORIMASS P Series Installation And Operating Instructions Manual
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KROHNE CORIMASS P Series Installation And Operating Instructions Manual

KROHNE CORIMASS P Series Installation And Operating Instructions Manual

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Version November 1996
CORIMASS P and E Series
Software Version P2.20
Installation and
Operating
Instructions
MFM 2081 K and F
MFM 3081 K and F

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Summary of Contents for KROHNE CORIMASS P Series

  • Page 1 Version November 1996 Installation and CORIMASS P and E Series Operating Instructions Software Version P2.20 MFM 2081 K and F MFM 3081 K and F...
  • Page 2 If you need to return CORIMASS flowmeters to KROHNE, please complete the form on the last page of this manual and return it with the meter to be repaired. Krohne regrets that it cannot repair or check your flowmeter unless accompanied by this completed form.

  • Page 3: Table Of Contents

    Part B: MFC 081 Signal Converter - Software Version P2.20 29 - 76 Operation of the Signal Converter Operating and Check Elements Krohne Operating Concept Key Functions 5.3.1 How to enter programming mode 5.3.2 How to terminate programming mode Table of Programmable Functions...
  • Page 4 6.12 Density Calibration Adjustment 6.12.1 Water as the reference liquid 6.12.2 Process fluid as the reference liquid 6.13 Density - Special functions 6.13.1 Density - Special functions 6.13.2 Referred density (option) 6.13.3 Fixed density (option) 6.14 User Data 6.14.1 Programming the display language 6.14.2 Password protection of menus 6.14.3 Custody transfer protection code 6.14.4 Primary head type and tube parameters (CF 1 - 9)

  • Page 5: Part A Installation And Start Up

    Part A Installation and Start up Instrument Description The CORIMASS Measuring System The CORIMASS Measuring System uses the Coriolis principle for measuring the mass flow rate of fluids with high accuracy. When using this measuring principle, it is possible to measure the mass flow rate directly, independent of any other parameters of the fluid, such as density, temperature, pressure, viscosity, conductivity and flow profile.

  • Page 6: Mass Flow Sensor

    Mass Flow Sensor 1.2.1 Measuring Principle Coriolis forces occur in rotating systems when accompanying bodies are moved toward or away from the rotational axis. This is illustrated by the following simple set-up: a pipe tube rotates with a constant angular velocity around the axis A - B (figure 2). The fluid particles flow with the velocity v through the loop.

  • Page 7: Mfs 3000 Transducer (E-Series)

    The use of flow dividers with optimised flow properties combined with the application of measuring tubes with a large tube cross-section ensures minimum loss of pressure. The danger of cavitation in the specified measuring range is eliminated. The use of thick-walled measuring tubes with a large cross-section exercises a further positive effect.

  • Page 8: Installation

    Installation General Principles The MFS 2000 and MFS 3000 CORIMASS mass flowmeters are capable of providing high accuracy and excellent repeatability. The narrow band pass digital filtering, the dual parallel tubes of the P-Series and the tuned reference platform of the E-Series provide exceptional immunity to external vibratory disturbances from process equipment in the area.

  • Page 9: Installation Guidelines

    Fig. 6: Installation MFS 3000 A good installation is the basis for the high measurement accuracy of the unit. The following installation guidelines are practical to implement, particulary if planned before the CORIMASS is first installed. Installation Guidelines 2.2.1 Location of CORIMASS Transducer Please ensure the following installation guidelines are adhered to as they are absolutely necessary for good measurement results and trouble-free start-up.
  • Page 10 Fig. 7a Vertical installation Fig. 7b Horizontal installation Highest position in Pipeline Avoid mounting the transducer in this position as gas bubbles may collect and remain in measuring system causing incorrect measurements (see Fig. 8). Fig. 8 Avoid highest position in pipeline...
  • Page 11 Falling Pipeline Long downstream pipelines (> 3m) should be avoided due to degassing of the medium. If long downstream pipelines are unavoidable install an additional vent valve as shown in Figure 9, unless there is under all operating conditions sufficient back pressure to avoid flashing of liquid to vapor.

  • Page 12: Requirements Of The Piping System

    Additional Devices Control valves, inspection glasses, etc., should be installed at least 1 × L from the transducer flange. De-coupled pairs of Transducers Transducers of the same size (or operating frequencies within 3 Hz) should not be installed in close proximity (< 4 L) in the same pipeline or connected via a mutual mounting frame unless they have been specially frequency de-coupled by the manufacturer (see Fig.
  • Page 13 As an example the table indicates maximum support length for U-shape profile and the various transducer sizes. Dimensions and maximum lengths s of U-shape supports. The chosen material dimensions are examples for adjusting support dimensions to transducer size. profile mm (in) mm (in) mm (in) mm (in)
  • Page 14 Some applications demand the use of flexible hoses and therefore the installation should comply with the diagram (fig. 16). If in any doubt about the use of flexible hoses contact KROHNE prior to installation. Fig. 16 Use of flexible hoses...

  • Page 15: Special Remarks On The Mfs 3000

    Requirement for Zero Adjustment A shut-off valve should be installed downstream of the transducer. Tight shut-off is important (fig. 18). Fig. 18 Shut-off valve downstream of the transducer For best zero adjustment the meter can be installed in a by-pass arrangement as shown in the diagram (fig.
  • Page 16 Transport: Before packing the unit for transport the “Transport Safety Device(s)” must be made active by turning clockwise against the mechanical stop (see Fig. 20). Note: Models MFS 3000 - 0.3 E, 1.5 E, and 10 E are depicted above. Model MFS 3000 - 30 E has two transport locks (not shown) on the same side of the instrument as the single transport lock shown.

  • Page 17: Electrical Installation

    Caution: If the MFS 3000 transducers are operated in the flow direction contrary to that indicated by the arrow on the rating plate, the transducer constant GK may change by 0.15% Electrical installation Location and connecting cables Location Do not expose the compact flow meter to direct sunlight. Install a sunshade if necessary. Connecting cables To conform to protection category requirements, observe the following recommendations: Fit blanking plug PG 16 or 1/2”...

  • Page 18: Inputs And Outputs

    Output Connections see Section 3.3 Figure 22: Power and signal connections for MFC 081 K / F Inputs and outputs The table below shows the input/output connection for the converter. The exact configuration depends on which optional output modules were fitted in the factory. The output options listed include presently available and planned options.
  • Page 19 ext (Max. 24 V DC) ext > 0.15 88888888 Pulse Output Screened Cable COUNTER Common (10 - 100nF if required) Fig. 23: Connection with external voltage source (> 800 ohm) 88888888 Screened Cable Pulse Output COUNTER Common (10 - 100nF if required) Fig.

  • Page 20: Startup

    Start-up Factory Set Parameters The mass flowmeter leaves the factory ready to be used. All process data has been programmed according to the customer order. See factory programming sheet delivered with the flowmeter. When no process details were supplied at the time of order, the mass flowmeter is programmed to a standard default set of values and functions.

  • Page 21: Installation Factor

    Installation factor The extensive self-diagnosis functions of the MFM 2081 and MFM 3081 also include a so- called installation factor. This factor indicates whether the flow meter has been correctly installed in the pipeline. The installation factor should be checked during the initial start-up phase.

  • Page 22: Programming The Converter With A Bar Magnet

    Programming the converter with a bar magnet • The converter can be programmed by means of the magnetic sensors mounted on the face plate without removing the front lid (see Fig. 25). • To do this, a bar magnet (standard supply) is used to activate the sensors by holding the magnet close to the glass window of the housing lid.

  • Page 23: Connection Of Remote Mounted Version

    Connection of Remote Mounted Version The BTS 12L signal cable is specifically for CORIMASS remote mounted versions and must be used to assure proper operation. This cable must be connected as described below. The color of the outer sheath is black for all standard instruments. For instruments located in hazardous areas, the cable sheath may be blue or black depending upon the specific electrical classification and the approval agency (PTB, FM, etc.).
  • Page 24 Note: On the transducer cable end individual shields are not connected and should not protrude from under the shrink tubing. Fig. 27: Signal cable terminations - transducer end For MFM 2081 F, the black wire should be connected to terminal 34 for standard and EEx ib II B applications, or to 35 for EEx ib II C applications For MFM 3081 F, the black wire should be connected to terminal 34 for standard applications, or to terminal 35 for EEx ib II C applications...
  • Page 25 Fig. 29: Signal cable terminations - converter end Fig. 30: Converter terminal box connections...
  • Page 26 Designation of terminals in the Converter Terminal Box: Sensor A + pink not connected Sensor B + blue Sensor B –, A – green not connected not connected Temperature Sensor V – brown/grey Temperature Sensor I +, V + yellow/white Temp.
  • Page 27 For applicaitons where CE approval is required, the BTS 12 L cable is prepared by Krohne to the required length, ready for installation. For non-CE applications, the cable provided may be prepared only at the converter end to permit the customer to more easily route the cable during installation, and tailor the length as needed.

  • Page 28: Connection Diagram Of Compact Version

    Connection diagram of compact version The connection converter - transducer of the compact version will be carried out by the manufacturer. A reconnection is only required in the case of a defective cable between terminals and electronics module. You can see the connection of the converter cable in the terminal box at Figure 32.

  • Page 29: Part B Mfc 081 Signal Converter - Software Version P2.20

    Part B MFC 081 Signal Converter - Software Version P2.20 Operation of the Signal converter Operating and check elements The operating elements are accessible after removing the cover of the electronics section using the special wrench. The converter is also programmable with magnetic sensors and a bar magnet without removing the covers of the electronic housing.

  • Page 30: Krohne Operating Concept

    Krohne Operating Concept QUIT YES Measuring Mode Error List QUIT NO STATUS.LIST. Code 2 210.50 RESET YES → ↵ ↑ kg/min RESET TOTAL RESET NO Code 1 When this display appears, press entry code 1. → ↵ ↵ ↵ → → →...

  • Page 31: Key Functions

    Key functions Before pressing any keys on the MFC 081 converter, it should be noted that outputs remain in the Measurement Mode (outputs are actively measuring) even when the converter is placed in the Programming Mode with the following exceptions: −...

  • Page 32: How To Enter Programming Mode

    5.3.1 How to enter programming mode To start: Display Comments → Press Fct. 1.0 If this appears, see previous box: “Function of the keys ” . Operation If this appears on the display, set the 9-keystroke Entry CodE 1 CodE 1 . --------- Factory setting: →...
  • Page 33 Examples The cursor (flashing part of display) has a grey background in the following examples: To start programming Measurement mode Programming mode → 1 3. 5 7 1 F c t. 1. 0 O P E R A T PLEASE NOTE: When “yes”...
  • Page 34 To change numeric values Increase numeric value ↑ 2 1 0 2 1 0 / m i / m i To move the cursor (flashing digit) To move to the right → 2 1 0 2 1 0 / m i / m i To move the decimal point To move to the right...

  • Page 35: Table Of Programmable Functions

    Table of programmable functions Fct. No. Text Description and settings OPERATION Main menu 1.0 Operation 1.1.0 BASIS.PARAM Submenu 1.1.0 Base data 1.1.1 ZERO SET Zero adjustment. See Fct. 3.1.1 1.1.2 L.F. CUTOFF Low flow cutoff. See Fct. 3.1.2 1.1.3 TIME CONST. Signal converter time constant.
  • Page 36 Fct. No. Text Description and settings TEST Main Menu 2.0. Test functions TEST DISP. Carry out display test. Start with the key → (Duration of test approx. 30 sec.). Stop test at any time with the ↵ key. TEST I Test current output I * SURE (NO).
  • Page 37 Fct. No. Text Description and settings INSTALL. Main menu 3.0 Installation 3.1.0 BASIS.PARAM Submenu 3.1.0 Base data 3.1.1 ZERO SET Zero adjustment. Use the ↑ key to select between MEASURE.VAL. and SET VALUE then press the ↵ key. * MEAS.VALUE (ensure "ZERO" flow in the pipeline) 1) Select: CALIB.YES or NO 2) If YES: Calibration (approx.
  • Page 38 Fct. No. Text Description and settings 3.2.0 DISPLAY Submenu 3.2.0 DISPLAY 3.2.1 CYCL. DISP. Cyclic display required? Setting NO or YES. If YES is selected then in measurement mode the display will switch from Mass Flow to Density to Total to Temperature every 4 seconds. 3.2.2 STATUS MSG.
  • Page 39 Fct. No. Text Description and settings 3.3.0 CUR.OUTP. I Submenu Current output I For systems with 2 or more current outputs see Sect. 5.7 3.3.1 FUNCTION I Function current output I * OFF (O/P current = 0 mA) * MASS FLOW (Mass flow in range MIN [Fct. 3.3.3] to MAX [Fct.
  • Page 40 Fct. No. Text Description and settings 3.4.0 PULS.OUTP. P Submenu 3.4.0 Frequency output P 3.4.1 FUNCTION P Function frequency output P * OFF (Output = 0V DC) * MASS FLOW (Frequency output 0 to MAX Freq. Hz = Mass Flow in range: MIN. FLOW to MAX FLOW as set in Fct.
  • Page 41 Fct. No. Text Description and settings 3.5.0 ALARM.OUT.A Sub menu 3.5.0 Process alarm output 3.5.1 FUNCTION A Function for alarm output P * OFF (Output goes to its inactive state) * MASS FLOW (Alarm active if mass flow goes outside limits as set in Fcts.
  • Page 42 Fct. No. Text Description and settings 3.6.0 CTRL.INP.E Submenu 3.6.0 Control input 3.6.1 FUNCTION E Function of the control input * OFF (control input inactive) * STANDBY (When active converter switches to STANDBY) * ZERO SET (Zero calibration triggered on the transition from inactive to active on the control input) * RESET TOTAL (Totaliser reset to zero on the transition from inactive to active on the control input)
  • Page 43 Fct. No. Text Description and settings 3.8.0 USER DATA Submenu 3.8.0 User data 3.8.1 LANGUAGE Language for display text * GB/USA (= English) * F (= French) * D (= German) 3.8.2 ENTRY.CODE1 Entry code for accessing menus required? * NO (Entry to menus with the → key only) * YES(Entry with →...
  • Page 44 Fct. No. Text Description and settings 3.9.0 TUBE PARAMS Submenu 3.9.0 Transducer calibration and compensation parameters* 3.9.1 Fgw CF1 Drive frequency - water: from Calibration Certificate 3.9.2 Coriolis frequency - water: from Calibration Certificate 3.9.3 Drive frequency - air: from Calibration Certificate 3.9.4 Coriolis frequency - air: from Calibration Certificate 3.9.5...

  • Page 45: Reset / Quit Menu - Totalizer Reset And Status Indication Acknowledgement

    Fct. No. Text Description and settings PARAM.ERROR Main Menu 4.0 Parameter error Not Used 4.2.0 CUR.OUTP.I Range settings incorrect LOW SCALE ≥ FULL SCALE 4.2.1 LOW SCALE Low scale range for current output I see Fct. 3.3.3 4.2.2 FULL SCALE Full scale range for current output I see Fct.
  • Page 46 View status message(s) and quit Button Display Description 0.36 Measurement mode The presence of the ∇ marker above Status on the kg/min display indicates the presence of warning messages in ∇ the status list. ↵ Enter access code for reset/quit menu: ↑ → CodeE 2 –...

  • Page 47: Status Messages

    Status messages ERROR TYPE COMMENT MESSAGES SAMPLING Severe PLL out of range SENSOR A Severe Sensor A voltage signal less than 5% of desired value SENSOR B Severe Sensor B voltage signal less than 5% of desired value RATIO A/B Severe One sensor signal much larger than the other EEPROM...

  • Page 49: Description Of Functions

    Description of Functions Zero point adjustment When operating the system for the first time, it is necessary to set the zero point of the instrument. Once the zero point has been adjusted, the installation should not undergo any further modifications in order to maintain the quality of the measurement. This means that after system changes (such as the piping), it is advisable to re-adjust the zero-point.
  • Page 50 The operator can now choose either A) Automatic (recommended) or B) manual adjustment. A) Automatic adjustment : Display line 1 line 2 ↵ CALIB. ( NO) ↑ CALIB. (YES) ↵ PERCENT* ↵ ACCEPT (YES) 4x↵ Return to measuring mode * Display of transducer live zero as a % of maximum flow rate, for a period of 20 seconds.

  • Page 51: Low Flow Cutoff

    Under certain circumstances, when the media consists of unevenly mixed components, it might be difficult to adjust the zero point. In such a case, the zero point adjustment procedure must be carried out under special conditions : – Media which tend to vaporise or degas should be kept under higher pressure. Two-phase media consisting of a separable solid component (slurry): In such a case it –...

  • Page 52: Programming The Display For Measurement Values

    To set the Time Constant : Begin from measuring mode. Display line 1 line 2 →→→ Fct. 1.1.(1) ZERO SET ↑↑ Fct. 1.1.(3) TIME. CONST. → (0)4.0 TIME C. S. Edit the time constant in seconds in range 0.5 to 20. ↵...
  • Page 53 The displayed measurement function can be changed in the measurement mode by pressing ↑ key. The setting of the display output is demonstrated for the example of displaying the mass flow rate in kg/h. Starting from the display of measurement values, the following programming steps are necessary.
  • Page 54 The setting of the display for TOTAL MASS or DENSITY is done the same way. Temperature is displayed with a fixed position of one decimal place. However, the user can choose between °C and °F. Begin from measuring mode Display line 1 line 2 →...

  • Page 55: Programming Numeric Data

    Programming Numeric Data Various functions on the MFC 081 require numeric data to be entered by the operator. Numeric data is always entered in the following manner. Using setting FULL SCALE of current output, Fct. 1.3.3 as an example: Begin from the measuring mode: Display line 1 line 2...

  • Page 56: Setting The Current Output

    NOTE: Some numerical values have fixed permissible limits. For example, Menu 3.1.2., L.F. CUT OFF only allows values in the range 0 to 10%. If, for example, the operator tries to enter a value of 15%, the converter responds as follows : Display line 1 line 2...
  • Page 57 If the current output is used to indicate the direction of flow the output is as follows : Flow Current pos. 20 mA neg. 0 or 4 mA depending on range. Where the current range has a warning state, the output will jump to this current level when the meter detects an abnormal condition.
  • Page 58 Fig. 34: Current output characteristics...

  • Page 59: Setting The Frequency / Pulse Output

    Setting the frequency/pulse output (Fct. 3.4. and 1.4) The frequency/pulse output allows the transfer of one of the following measurement values : VALUE OUTPUT TYPE Mass Total Pulse Mass Flow Rate Frequency Density Frequency Temperature Frequency Volume Total Pulse Volume Flow Rate Frequency Flow Direction Binary 0 or V+...
  • Page 60 For these functions the output sends out a series of pulses where each pulse represents a fixed mass or volume. So, for example, to set the converter for 1 pulse equal to 20g, proceed as follows : Begin from measuring mode Display line 1 line 2...
  • Page 61 Set the Alarm output, Fct. 3.5.1 to either P1 SAT or ANY OP.SAT. If the pulse output saturates now the Alarm output will signal a warning. Set the STATUS MSG. function Fct. 1.2.2 to either OUTPUT or ALL MSGS. If the pulse output becomes saturated now the Status arrow on the display will be lit and the display will start to flash.
  • Page 62 Example 2 : Measured value = temperature Max temperature = 75°C Min temperature = -25°C Max frequency = 1000 Hz Temperature Frequency < - 25°C 0 Hz 0°C 250 Hz 20°C 450 Hz 75°C 1000 Hz > 95°C 1300 Hz To set up example 1, proceed as follows : Begin from measuring mode.

  • Page 63: Setting The Process Alarm Output

    Binary output: If the frequency output is set to signal the flow direction, Fct. 3.4.2. is suppressed and the output is as follows : Flow Direction pos. neg. 0 Volts Fig. 35: Frequency output characteristic of examples 1 and 2 Setting the process alarm output (Status) The process alarm output is a two state signal (active or inactive) that can be used to indicate a variety of meter and process states, as shown in the table below.
  • Page 64 Fig. 36: Process alarm characteristics For example, a process requires that the process fluid temperature stays within the range 30 to 40°C and the low level signal is required to indicate that the temperature has gone out of range. Begin from measuring mode Display line 1 line 2...

  • Page 65: Setting The Control Input

    Setting the control input (Binary) The MFC 081 has an input connection which allows certain meter functions to be controlled remotely. These functions are: - Reset totaliser - Standby - Acknowledge status message - Start zero calibration The function will be triggered when the input becomes active. For standby the converter will be held in standby for as long as the input is active.

  • Page 66: Setting The System Control

    Fig. 37: Driving the control input 6.10 Setting the system control Some applications for the MFM 2081 and MFM 3081 may require measurement to be suspended at particular times, such as during steam cleaning. The system control functions allow the converter to automatically detect user-defined conditions and then to act accordingly. Selectable conditions (Fct.

  • Page 67: Standby Function

    Begin from measuring mode Display line 1 line 2 →↑↑ Fct. (3).0. INSTALL →6x↑ Fct. 3.(7).0. SYS.CTRL.S → Fct. 3.7.(1). FUNCTION S → (OFF) ↑ (FLOW OFF) ↵ Fct. 3.7.(1). FUNCTION S ↑ Fct. 3.7.(2). REFERENCE → (TEMPERATUR) ↑ (DENSITY) ↵...
  • Page 68 Begin from measuring mode Display line 1 line 2 STANDBY ↑ 3.456 Frozen Totalizer ↑ STANDBY While in this state the measuring tube still vibrates and the measurements can come back on line in an instant. There is an additional standby state, 'STOP', in this case the drive to the primary head is disabled and vibrations cease.
  • Page 69 6.12 Density Calibration Adjustment 6.12.1 Water as the reference liquid: It is often convenient to do a field calibration of the density function using water as the reference liquid. Fill the flowmeter with water which is free of air. It is best to be operating the system at process flow rates and at a stable temperature.
  • Page 70 Density of water as a function of temperature Temperature in Density in Temperature in Density in °C °F kg/m lb/ft °C °F kg/m lb/ft 999.8396 62.41999 997.0468 62.24563 32.9 999.8712 62.42197 25.5 77.9 996.9176 62.23757 33.8 999.8986 62.42367 78.8 996.7861 62.22936 34.7 999.9213...
  • Page 71 Temperature in Density in Temperature in Density in °C °F kg/m lb/ft °C °F kg/m lb/ft 988.0839 61.68608 65.5 149.9 980.4432 61.20907 50.5 122.9 987.8592 61.67205 150.8 980.1751 61.19233 123.8 987.6329 61.65793 66.5 151.7 979.9057 61.17552 51.5 124.7 987.4051 61.64371 152.6 979.6351 61.15862...
  • Page 72 6.13.2 Referred Density (Option) Referred density is a factory-installed option which expands the type of density outputs available to three different variations - “actual” ( normal density output ), “fixed”, and “referred”. Any one of these three options can be selected in Fct. 1.2.5 or Fct. 3.2.5 - the “DENSITY” function of the “DISPLAY”...
  • Page 73 6.14 User data 6.14.1 Programming the display language The converter can display its messages and prompts in one of three languages, German, English or French. The language may be changed using Menu 3.8.1.. Example: Setting for German language Begin from measuring mode. Display line 1 line 2...
  • Page 74 If the new password was entered the same both times it will be accepted, otherwise "CODE WRONG" will be displayed. NOTE: The default value of the password protection code when leaving the factory is: → → → ↵ ↵ ↵ ↑ ↑ ↑ 6.14.3 Custody transfer protection code The converter can be set for measurement with or without the custody transfer protection enabled.
  • Page 75 The default value of the custody transfer protection code when leaving the factory is ↵→↑↵↑→↵→↑ This password may be changed using Menu 3.8.7.. However, this can only be done if custody transfer protection is disabled first, as described above. Begin from measuring mode. Display line 1 line 2...
  • Page 76 6.14.4 Primary head type and tube parameters (CF1-9) The primary head type and tube parameters are factory set and should not normally be changed by the customer. They are only normally needed if the converter has to be replaced in the field.
  • Page 77 Most of these options are hi-pot-tested to comply with the requirements of Ex and CE and if field exchanged these requirements may be violated. * Krohne will also not accept responsibility or honour the warranty if this is done. If you need an option change, please contact your nearest office for advice.
  • Page 78 When this option is fitted only one analog 4 - 20 mA output is fitted as well. Detailed description of the Krohne RS 485 protocol is available on request or when the meter is ordered a copy is included in the instruction package. (This option is not available with software versions 2.18 and lower.)
  • Page 79 8.1.2 Testing current output This function allows a number of fixed current levels from 0 to 22 mA to be driven from the current output. This function interrupts the normal operation of the output, so the operator will be asked if he is sure before the test commences. Display line 1 line 2...
  • Page 80 To test the frequency, connect a frequency meter to the pulse output terminals and proceed as follows: Display line 1 line 2 Fct. 2.(2) TEST I ↑ Fct. 2.(3) TEST P → SURE (NO) ↑ SURE (YES) ↵↵ Fct. 2.3.(1) FREQUENCY →...
  • Page 81 The meter now issues a stream of pulses with the set width. The running total of pulses sent is shown on the display. The test stops when either 100,000 pulses have been sent or the operator presses the ↵ key. If the counter reads a smaller number than the actual number of pulses sent, or the frequency meter under reads, then this indicates that a weak signal is reaching the frequency meter/pulse counter.
  • Page 82 Line 1 of the display shows the current state of the input. HI = 4 - 24 Volts, LO = 0 - 2 Volts. Line 2 shows the currently selected function of the input. As the voltage on the input changes so the display will change from HI to LO accordingly.
  • Page 83 Service and Troubleshooting Threads and “O” Ring of the converter housing lid The screw threads and gaskets of both housing covers should be well greased at all times. Always check for signs of damage and never allow dust to accumulate. Defective gaskets and lids should be replaced immediately to maintain the integrity of the protection category.
  • Page 84 Change of operating voltage and power fuse F9 Always switch off power source before commencing work! Remove electronics as described in Section 9.2. 9.3.1 Replacement of power fuse F9 The mains fuse F9 of the converter, sits on the power supply board beside the transformer, as shown in Figure 38.
  • Page 85 4 fixing bolts uniformly. Any faults resulting from failure to follow these instructions scrupulously shall not be covered by our warranty! WARNING: Ex/Hazardous duty versions may not be turned. Please order correct position at time of placing order or consult Krohne.
  • Page 86 Troubleshooting Operational errors may be caused by: The process medium – The installation – The measuring system – Most frequently, errors occur in the measuring system when it is installed and switched on for the first time. They are normally due to incorrect installation of the primary head. When the measuring system is switched on and the converter's self-test has been carried out (Display message 'TEST') the message 'STARTUP' is displayed.
  • Page 87 The operator may inspect the message list at any time, using the RESET/ACKNOWLEDGE menu. As the operator goes through the list, if a message is marked with '≡' characters, this indicates a new warning that the operator had not previously acknowledged. At the end of the list the operator is asked to acknowledge the warnings with 'QUIT (YES)' prompt.
  • Page 88 Status messages ERROR TYPE COMMENT MESSAGES SAMPLING Severe PLL out of range SENSOR A Severe Sensor A voltage signal less than 5% of desired value SENSOR B Severe Sensor B voltage signal less than 5% of desired value RATIO A/B Severe One sensor signal much larger than the other EEPROM...
  • Page 89 Pulse output Alarm output (Status) Control input (Binary) Measurement mode and commissioning Commissioning and Start-up of the flowmeter Please check the following table of hints and advice before calling your KROHNE Service Department. Group Fault / Symptom Cause Remedy Group D...
  • Page 90 Test OK Check cabling and totalizer. Check external voltage supply Test faulty Pulse output faulty. Replace converter or call Krohne Service. Alarm output is used as Check connections as per external voltage supply, Section 2.3. Voltage between a possible electrical terminals 5 and 4.2 approx.
  • Page 91 Correct the programming as per Fct. 3.6.1 - 3.6.2. Test as per Fct. 2.15. If test is faulty, the output is faulty. Replace converter or call Krohne Service. Control input switched off. Switch on as per Fct. 3.6.1 Group ST Display keeps returning Poor/intermittant power.
  • Page 92 Checking the Primary Head Remember! Always switch the power off before opening the converter housing. If application and installation criteria have been carefully reviewed and the converter electronics is deemed not at fault, the following checks can be performed on the primary head. Whether the system has a remote or compact converter, it is most convenient to first remove the 10 pin sensor connector (C) from the converter as outlined below to isolate the converter electronics.
  • Page 93 E-Series Measurements outside Measure between: typical values: white* and green 5-10 35-44 Primary faulty (Sensor A) Replace or call Krohne service. gray* and green 5-10 35-44 (Sensor B) white and gray 10-18 71-87 (Sensors A and B) To check the temperature...
  • Page 94 OUTPUT These warnings occur where the converter is trying to drive a signal on either the current or frequency output which is outside the selected range. For example: Max flow = 10kg/min but actual flow is 15kg/min. If the current output was set for mass flow then it would saturate at 20mA (10kg/min) plus over-range.
  • Page 95 The operator can choose from: NO MESSAGE No warnings will be displayed in the main displays. Output saturation warnings ignored. Light warnings do not cause display to flash. PRIMARY HEAD Light warnings registered in main display. Output warnings ignored. OUTPUT Only output warnings in main display.
  • Page 96 Order numbers Standard Converters Order Number 100 - 240 V AC Smart 2107301000 21 - 48 V AC Smart 2107303400 24 V DC Smart 2107291000 Ex Converters Order Number 100 - 240 V AC Smart 2107311000 21 - 48 V AC Smart 2107313400 24 V DC...
  • Page 97 Part D Technical Data and Dimensions Technical Data 11.1 Primary Head CORIMASS MFS 3000 - ... Measuring ranges (for water at 20°C or 68°F) Nominal value 1.5 kg/min or 10 kg/min or 30 kg/min or 3.3 lb/min 22 lb/min 66 lb/min Flowrates: 0.035 kg/min or 0.25 kg/min or...
  • Page 98 European Standard pending FM approvals Special versions Special versions Krohne America approval No. 529 Sanitary version, 3 A approval Tubes are crevice free and electropolished to better than # 150 grit (70µ inches) finish. Clean-In-Place design Insulated measuring tube on request...
  • Page 99 11.2 MFC 081 Signal Converter Measured quantities and units Mass flowrate g, kg, to, oz, lb per second, minute, hour, day Total mass (or total volume g, kg, to, oz, lb (or cm , dm , liter, in , ft , imp.
  • Page 100 Operator control / interfaces → ↵ ↑ Keypad 3 keys Local display: Type 3-line, illuminated LCD display 1st (top) line: 8 -character, 7 segments for numerals and signs 2nd (middle) line: 10-character, 14 segments for texts 3rd (bottom) line: 6 markers for status identification Function actual measured value, forward, reverse or sum totaliser (7...
  • Page 101 11.4 Dimensions and Weights 11.4.1 Compact Systems MFS 3081 K / MFS 2081 K Dimensions Compact Systems in mm and (inches) MFM 3081 K MFM 2081 K 1.5 E 10 E 30 E 60 P 300 P 800 P 1500 P (6.73) (9.76) 356 (14.02)
  • Page 102 11.4.2 Remote Systems - MFS 3081 F / MFS 2081 F Dimensions Transducer MFS 3000 Transducer MFS 2000 in mm and (inches) 1.5 E 10 E 30 E 60 P 300 P 800 P 1500 P 168..(6.61) (9.76) 356 (14.02) 394 (15.51) 537 (21.14) 810 (31.98)
  • Page 103 If you need to return flow meters for testing or repair to KROHNE Your CORIMASS mass flow meter has been wet calibrated in an accurate If the flow meter has been operated with – flow meter test rig. toxic, caustic,...

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Corimass e seriesMfm 2081 kMfm 2081 f

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