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11.2

MFC 081 Signal Converter

Measured quantities and units
Mass flowrate
Total mass (or total volume
Density
Volume flowrate
Temperature
Option

g, kg, to, oz, lb per second, minute, hour, day
g, kg, to, oz, lb (or cm

, dm

, m

, liter, in

, ft

, imp. or US gallons)

g, kg, to per cm

, dm

, m

, liter or oz, lb per in

, ft

, imp. or US gallons

, dm

, liter, m

, in

, ft

, imp. or US gall per sec., minute, hour, day

C or

sugar concentration in

Brix or Baumè, mass or volume concentration

Settable functions

display format, physical units, current, pulse and status outputs,
low-flow cut-off, time constant, primary constant, lower/upper range
limits,, forward/reverse measurement, standby, zero and reset of total
mass

Input and outputs / versions

Standard

Option 1

Option 2

Current output

not galvanically
isolated

galvanically isolated from
one another

Pulse (frequency) output

–

Status output

(active)

(passive)

–

Binary input

–

Current output
Function

−

all operating data adjustable

−

galvanically isolated via optocoupler

Current

0 - 20 mA or 4 - 20 mA

Load

≤

500 ohms

Linearity

≤

0.2% of measured value in range of 2 - 20 mA

≤

0.02% of full scale deflection in range of 0 - 2 mA

Pulse output

not provided if fitted with option (version) 1 or 2,
see above “input and outputs”

Function

−

all operating data adjustable

−

open

collector

−

galvanically isolated via optocoupler

Pulse rate

up to 1300 Hz

Amplitude

max. 24 V

Load rating

≤

150 mA

External voltage

≤

24 V DC

Status indication output

not provided if fitted with option (version) 2, see “input and outputs”
above.

−

all operating data adjustable

−

galvanically isolated via optocoupler

Function

status, limit value, direction identification

Voltage

max. 24 V, also suitable as voltage source for the pulse output

Load rating

short-circuit proof

Binary input

not provided if fitted with option (version) 2, see “input and outputs” above

Function

−

settable for totalizer reset, zero point, status acknowledgement or

changeover standby

measuring mode

−

galvanically isolated via optocoupler

−

active “high” or “low”

Control signals

high:

4 - 24 V or terminals open

low:

0 - 2 V or terminals closed

input current: < 0.2 mA

Low-flow cut-off

0 - 10% of nominal full-scale range

Time constant for flow

1 - 20 seconds (optionally: 0.5 - 20 seconds)

Power supply
Standard

230 V AC,

10% or 120 V AC, +10/-15%, 48 - 63 Hz

(changeable 100, 200 or 115 V AC,

10%, 48 - 63 Hz)

Special versions

21, 24, 42, 48 V AC, +10/-15%, 48 - 63 Hz
24 V DC,

30%

Power consumption

AC : 18 VA

DC : 10 W

Содержание CORIMASS E Series

Страница 1: ...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...

Страница 2: ...which are specified in the special Ex installation and operating instructions supplied only with hazardous duty equipment Responsibility as to suitability and intended use of our instruments rests sol...

Страница 3: ...081 F 22 4 7 Connection of Remote Mounted Version 23 4 8 Connection Diagram of Compact Version 28 Part B MFC 081 Signal Converter Software Version P2 20 29 76 5 Operation of the Signal Converter 29 5...

Страница 4: ...Option 78 8 Functional Checks 78 8 1 Test Functions 78 8 1 1 Testing the display 78 8 1 2 Testing current output 79 8 1 3 Testing pulse output 79 8 1 4 Testing alarm output 81 8 1 5 Testing control i...

Страница 5: ...K the converter is mounted directly to the transducer in the separate version MFM 2081 MFM 3081 the transducer MFS 2000 MFS 3000 and the converter MFC 081 F are connected to each other via a shielded...

Страница 6: ...ating loop filled with a flowing fluid Fig 2 Coriolis force in a rotating pipe loop Rotation does not necessarily mean the completion of full circular orbits Short circular segments suffice In the eve...

Страница 7: ...comprised of precision transducers for the measurement of small fluid and gas mass flow rates with the range of 0 006 kg min to 33 3 kg min 0 013 lb min to 73 16 lb min In contrast to the CORIMASS P s...

Страница 8: ...from adjacent piping and mounting structures in order to take advantage of the high degree of precision built into the instrument fig 5 A possible exception is mentioned in Section 2 2 2 Fig 5 Basic i...

Страница 9: ...tallation 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...

Страница 10: ...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 F...

Страница 11: ...9 unless there is under all operating conditions sufficient back pressure to avoid flashing of liquid to vapor Fig 9 Avoid long downstream pipelines after the transducer Pumps Pumps should be installe...

Страница 12: ...de coupled by the manufacturer see Fig 11 The first 5 digits of the RB shown on the Data Plate and on the Calibration Certificate give the operating frequency of the transducer with water Fig 11 Mount...

Страница 13: ...e support and process pipe No rubber plastic or other material should be installed between the clamp and process pipe The transducer should be supported and clamped free of tension on either side of t...

Страница 14: ...ibration is excessive flexible hoses can be used to de couple the process from the transducer Some applications demand the use of flexible hoses and therefore the installation should comply with the d...

Страница 15: ...Special remarks on the MFS 3000 In order to guarantee the perfect function of the CORIMASS transducer MFS 3000 even after poor transport conditions the transducer is provided with a Transport Safety D...

Страница 16: ...odel MFS 3000 30 E has two transport locks not shown on the same side of the instrument as the single transport lock shown Fig 20 Location Transport Safety Device Flexible pipes or hoses can easily be...

Страница 17: ...gland by removing the appropriate ring s from the seal 3 2 Connection to power Note information given on the instrument dataplate voltage frequency Electrical connection in conformity with IEC 364 or...

Страница 18: ...ol input Current output2 4 1 Pulse output Current output 2 Current output 2 4 2 Alarm output active Alarm output passive not used The inputs outputs share a common signal ground which is galvanically...

Страница 19: ...and pulse Option 6 3 current and input Option 7 3 current and alarm Option B Current and RS485 Option C 1 Current 1 Dual phase pulse output and input 5 Common Common Common Common Common Common 6 Cur...

Страница 20: ...ossible problems a Set flow mode Fct 3 1 8 to either flow 0 or Flow 0 so that back flows are ignored or b Increase Low Flow cut off Fct 3 1 7 so that small back flows are ignored or c Set the alarm ou...

Страница 21: ...primary head for approx 2 minutes at a throughput rate of greater than 50 of rated flow Subsequently ensure that flow comes to a complete stop in the primary head see fig 10 Section 2 2 2 for setting...

Страница 22: ...e lengths up to 100 meters 328 feet unless limited by CE and or hazardous location requirements Also note that software versions R2 18 and P2 20 have hardware changes in the MFC 081 converter as compa...

Страница 23: ...m 10 inches The cable must be fixed carefully in the vicinity of the transducer to avoid resonant vibrations of the cable Also all screws in the terminal boxes and covers should be securely fastened M...

Страница 24: ...inations 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 s...

Страница 25: ...25 Fig 29 Signal cable terminations converter end Fig 30 Converter terminal box connections...

Страница 26: ...hite brown violet black black shrink Designation of terminals in the Transducer Terminal Box 11 12 17 18 19 20 21 22 23 24 33 34 35 Sensor A Sensor A Sensor B Sensor B not connected not connected Temp...

Страница 27: ...by the customer using the parts in the kit provided with the cable The kit contains the following items Connector Sleeves 2 1 mm 2 for violet and black wire ends 6 0 5 mm 2 for remaining wire ends Shr...

Страница 28: ...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 Note MFM 2081 K Black to...

Страница 29: ...e Setting level This level is divided into three main menus Fct 1 0 OPERATION This menu contains only the most important parameters and functions of Menu 3 install to allow rapid changes to be made du...

Страница 30: ...UT I 4 3 0 ZERO SET 4 4 not used 4 6 0 PULS OUTP P 4 7 0 PROC ALARM 4 8 0 SYSTEM CTRL 4 2 1 4 2 2 4 3 1 4 3 2 4 6 1 4 6 2 4 7 1 4 7 2 4 8 1 4 8 2 PROGRAMMING LEVEL PARAMETER CHECK LEVEL 210 50 kg min...

Страница 31: ...the flashing characters Select or Up Key This key changes the field digit under the cursor Digit Increase value by 1 for each key press 0 follows 9 Dec pt Move decimal point 0000 0000 changes to 0000...

Страница 32: ...3 times Fct 1 0 OPERATOR Press 1 3 times until the cursor is under the extreme left menu column Fct 1 0 2 0 or 3 0 12 345 kg min or If no changes have been made to the system s configu ration return d...

Страница 33: ...are displayed Fct 1 0 OPERATION Fct 2 0 TEST or Fct 3 0 INSTALL Press key F c t 3 0 I N S T A L L A C C E P T Y E S To accept the new parameters Press to confirm PARAM CHECK will appear in the display...

Страница 34: ...6 0 k g m i n k g m i n To change the text Select next text M A S S F L O W D E N S I T Y To change the units Numeric values automatically converted Select new unit 2 1 0 6 0 0 2 1 0 6 0 g m i n k g m...

Страница 35: ...VOLUME FLOW Unit for volume flow See Fct 3 2 7 1 2 8 VOLUME TOTAL Unit for volume total See Fct 3 2 8 1 2 9 CONC MEAS Parameters for concentration measurement See separate concentration measurement in...

Страница 36: ...s The system now sends pulses of the required width To stop the test press twice 2 4 TEST A Test alarm output SURE NO Use the key to select YES then press LEVEL LOW 0 Volts is output on the alarm term...

Страница 37: ...ues Range 0 5 20 sec Option 0 2 20 sec 3 1 4 STANDBY Use the key to switch between three modes of operation then press MEASURE STANDBY tube vibrating Mass Flow set to zero STOP tube drive stopped Note...

Страница 38: ...digits after the decimal point selectable 3 2 4 MASS TOTAL Units and format for totaliser g kg t oz lb Number of digits after the decimal point selectable 3 2 5 DENSITY Units and format for density g...

Страница 39: ...ilable if installed Conc by volume see sep instruction manual DIRECTION Negative flow gives current of 0 4 mA positive flow gives current of 20 mA 3 3 2 RANGE I Range for current output I Select from...

Страница 40: ...oncentration parameters if Conc by mass option installed See separate Conc by volume instruction manual DIRECTION Negative flow gives output of 0 volts DC Positive flow gives output of V volts DC 3 4...

Страница 41: ...and 3 3 4 P 1 SAT Alarm active if value output on pulse output is either 1 3 x Max Limit as set in Fct 3 3 4 or Min Limit as set in Fct 3 3 3 ANY O P SAT Alarm active if value output on either curren...

Страница 42: ...FLOW 0 RST Mass flow readings forced to zero totaliser frozen while active but reset to zero as condition becomes inactive Not available with Custody Transfer Protection OUTPUTS OFF Forces all output...

Страница 43: ...tor HHC connected to current output Factory setting MFC 081 Characters assignable to each place A Z 0 9 blank character 3 8 5 ENABL RESET Allow totaliser reset from the RESET ACKNOWLEDGE menu or with...

Страница 44: ...re compensation from Calibration Certificate 3 9 8 Tc0 CF8 Mass flow temperature compensation at zero flow from Calibration Certificate 3 9 9 TcD CF9 Density temperature compensation from Calibration...

Страница 45: ...IN LIMIT Minimum limit for range checking see Fct 3 5 3 4 7 2 MAX LIMIT Maximum limit for range checking see Fct 3 5 4 4 8 0 SYS CTRL S Minimum and maximum limits incorrect MIN LIMIT 96 of MAX LIMIT 4...

Страница 46: ...MASS FLOW The symbols indicate that this is a new error and not one that has been previously acknowledged Use either the or keys to view other messages in the list Otherwise press to exit 1 Err QUIT Y...

Страница 47: ...d its specified number of write cycles MASS FLOW Light Mass flow rate 2 nominal flow ZERO ERROR Light Mass flow rate at zero adjust is larger than 20 of nominal 100 flow rate TEMPERATUR Light Temperat...

Страница 48: ...KED BLOCKED BLOCKED INSTALL Fct 3 3 CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I CUR OUTP I Fct 3 4 PULS OUTP P BLOCKED BLOCKED PULS OUTP P PULS OUTP P BLOCK...

Страница 49: ...tment After flushing flow in the primary head must be brought back to zero by tightly closing appropriate valves The zero off set can either be measured automatically or entered manually using the dis...

Страница 50: ...perly There are still gaseous inclusions in the primary head because it was flushed insufficiently Resonant vibration of the piping interferes with the primary head because of poor installation In suc...

Страница 51: ...f one way flow is selected this averaging process will not work and the totaliser reading will increase slowly with time To prevent this the Low Flow Cutoff should be set The Low Flow Cutoff is entere...

Страница 52: ...aracteristic 6 4 Programming the display for measurement values Fct 1 2 and 3 2 The following measurement functions can be displayed For systems with concentration software their specific extra displa...

Страница 53: ...racters will be flashing on the display The flashing value can now be changed with the key By pressing the key the cursor moves to min which starts to flash This dimension may now also be changed by u...

Страница 54: ...a cyclic display of all measurement values is desired the following inputs have to be added to the previous steps With the cyclic display enabled the converter will switch displays in the measuring mo...

Страница 55: ...ple If no extra digits are required pressing the key will cause this leading zero to be blanked 0 5 0000 kg min 5 0000 Some values do not allow the decimal point to be moved Key Display line 1 line 2...

Страница 56: ...2 mA 4 to 20 mA warning state 3 5 mA All output ranges will overrange to 20 5 mA The 4 20 mA ranges will under range to 3 8 mA All functions except flow direction have a minimum and a maximum value Wh...

Страница 57: ...mits the output is said to be saturated This may cause problems with external instrumentation Saturation may be indicated to the customer using either the process alarm section 6 7 or the status warni...

Страница 58: ...58 Fig 34 Current output characteristics...

Страница 59: ...the Concentration option the following functions are also available VALUE OUTPUT TYPE Concentration by mass Brix Frequency Concentration by volume Frequency Solute flow Brix rate Frequency Solute Tota...

Страница 60: ...ould take into account the maximum flow rate Flowmax he expects through the meter such that Flowmax Q 2 where Flowmax is in units g s or cm 3 s Q is in units of g or cm 3 is in units of seconds If Flo...

Страница 61: ...of process fluid going through the primary head NOTE The pulse output ignores the sign positive or negative of the flow To ensure reliable operation the system should be set for one way flow with suit...

Страница 62: ...o the Max Value allowed for Fct 3 4 2 is 1000 Hz allowing for the 1 3 x over range See Figure 35 for the frequency output characteristics of examples 1 and 2 NOTE The frequency output has a duty cycle...

Страница 63: ...es past the maximum limit the output switches to active However as flow then decreases the output will not switch to inactive until it becomes less than MAX H where H 2 of upper limit Process alarm fu...

Страница 64: ...urn to measuring mode NOTE For functions other than range checking Fct 3 5 3 and 3 5 4 are not accessible Key Display line 1 line 2 Fct 3 0 INSTALL 4x Fct 3 5 0 ALARM OUT A Fct 3 5 1 FUNCTION A OFF MA...

Страница 65: ...ed on the transition of the input from inactive to active The active level of the input may be defined using Fct 3 6 2 as active high 4 24 volts or active low 0 2 volts NOTE Internal resistors attache...

Страница 66: ...sis in the same way as the process alarm see Sect 6 7 When such a condition is met the converter takes one of the following actions 1 Flow reading forced to zero totaliser stopped any output registeri...

Страница 67: ...zero and will be displayed as shown below 0 0000 STANDBY 6 11 Standby function Fct 1 1 4 and 3 1 4 The instrument may be switched to a STANDBY state Once in this state all outputs go to their off stat...

Страница 68: ...mode If STANDBY or STOP was selected the instrument goes immediately into that state To return to measurement go back to Fct 1 1 4 and select MEASURE NOTE It is not possible to change mode directly f...

Страница 69: ...urn to measuring mode 6 12 2 Process fluid as the reference fluid Often it is very convenient to use the actual process fluid to calibrate the density output under actual operating conditions against...

Страница 70: ...89 62 04724 11 51 8 999 6051 62 40535 36 98 6 993 6948 62 03637 11 5 52 7 999 5529 62 40209 36 5 97 7 993 5187 62 02537 12 53 6 999 4975 62 39863 37 98 6 993 3406 62 01426 12 5 54 5 999 4389 62 39497...

Страница 71: ...3 5 164 3 976 0076 60 93216 58 5 137 3 984 0604 61 43489 74 165 2 975 7204 60 91423 59 138 2 983 8108 61 41931 74 5 166 1 975 4321 60 89623 59 5 139 1 983 5597 61 40364 75 167 975 1428 60 87816 60 140...

Страница 72: ...ange in density per degree change in temperature Key strokes for the referred density option shown below start from the measuring mode Key Display Step line 1 line 2 Fct 1 0 OPERATOR 1 enter programmi...

Страница 73: ...can be altered by Menu 3 8 3 To enable password protection and to change the password from its factory setting proceed as follows Note the password must be enabled in Fct 3 8 2 before it can be chang...

Страница 74: ...altered Primary head type and CF 5 Low flow cutoff Custody transfer password Mass total display units and format Flow direction Flow mode Set to FLOW 0 only Standby Control input function Only acknow...

Страница 75: ...character code is displayed With this character code the manufacturer can decode the password in cases where the password is lost It is also possible to protect just the mass totaliser Menu 3 8 5 ENAB...

Страница 76: ...he other transducer specific parameters proceed to Fct 3 9 0 TUBE PARAMS Check the values programmed against the Data Plate and or Calibration Certificate data If the data is incorrect it can be adjus...

Страница 77: ...ill 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 All options are not compatible in certain configura...

Страница 78: ...functions Menu 2 0 contains a number of test functions These allow the current frequency and alarm outputs to be driven at a number of fixed test levels so that the communication between the converte...

Страница 79: ...sired output number Fct 3 3 0 CUR OUT I Fct 3 3 0 CUR OUT I 1 Fct 3 3 0 CUR OUT I 2 Use the key to select the desired output number Fct 3 3 1 FUNCTION I Program the selected output as normal 8 1 3 Tes...

Страница 80: ...ect a pulse counter to the impulse output and proceed as follows Fct 2 3 0 TEST P SURE NO SURE YES Fct 2 3 1 FREQUENCY Fct 2 3 2 TEST PULSE 0 4 mSec Use the to select the desired pulse width 1 0 mSec...

Страница 81: ...reads a larger number than the converter or if the frequency meter reading is high or unstable then this indicates the presence of external interference Try one or more of the following i Add increase...

Страница 82: ...they both read about 80 85 If the sensors read less than this it indicates that the vibrations of the primary head are being impeded This could be due to a poor installation or a large quantity of ai...

Страница 83: ...m the electronic compartment 4 Undo screws A and fold display board to side 5 Remove plug C 10 pin signal cable 6 Undo screws D using a screwdriver for recessed head screws and carefully remove the co...

Страница 84: ...sition of fuses see power supply board layout diagram Voltage Fuse F9 200 230 240 VAC 160 mA T 100 115 120 VAC 315 mA T 42 48 VAC 800 mA T 21 24 VAC 1 6 A T The fuses should be an anti surge type with...

Страница 85: ...g and operating elements on MFM 2081 K and MFM 3081 K compact flow meters that are installed in locations that are hard to get at the signal converter housing can be turned through 90 1 The connection...

Страница 86: ...rimary head s INSTAL FACT using Fct 2 7 4 If the reading is high see Section 2 then this indicates either poor meter clamping or excessive gas in the process fluid For horizontally installed systems f...

Страница 87: ...ashing showing that all the problems detected so far have been acknowledged However the status arrow will only be extinguished if there are no longer any messages present in the list It is also possib...

Страница 88: ...pecified number of write cycles MASS FLOW Light Mass flow rate 2 nominal flow ZERO ERROR Light Mass flow rate at zero adjust is larger than 20 of nominal 100 flow rate TEMPERATUR Light Temperature out...

Страница 89: ...ss flow display incorrect The wrong value for parameters CF5 GK programmed This is stamped on the data plate Check and correct according to Sections 6 12 and 6 14 4 Zero calibration Re do zero check m...

Страница 90: ...short circuit if present If still faulty the alarm or pulse output is faulty Re place converter or call Krohne Service Pulse output is switched off Switch on as per Fct 3 4 1 P2 Fluctuating pulse rate...

Страница 91: ...5 and acknowledge the error message Primary Sensor faulty Check as per Sect 9 8 Fuse F11 blown negative analog voltage Call Krohne Service ST3 Display returns to Start up and the primary sensor is noi...

Страница 92: ...n in Section 4 8 Fig 32 The pin out for the various wire colors for the converter connector is shown below should the cable need to be checked For remote mounted converters the same procedure can be f...

Страница 93: ...5 44 5 10 35 44 10 18 71 87 Measurements outside typical values Primary faulty Replace or call Krohne service 3 To check the temperature sensor RTD Measure between red and yellow red and blue yellow a...

Страница 94: ...d then tries to restart as if it had just been switched on Normally such errors will require repair by service personnel Viewing and acknowledging warning messages Whenever a warning occurs the displa...

Страница 95: ...ditions are completely ignored If this facility is enabled then the operator may view the warnings as follows Begin from measuring mode To set up the converter to display errors in the measuring mode...

Страница 96: ...F 10 5 V Analog voltage 500 mA T F 11 Negative Analog voltage 100 mA T F 12 Input output functions 160 mA T These fuses F10 F11 12 are soldered into the power supply and are essential to ensure the sy...

Страница 97: ...8 176 F 50 to 80 C or 58 176 F Special vers 50 to 150 C or 58 to 392 F 50 to 200 C or 58 to 392 F 50 to 200 C or 58 to 392 F Density 10 2000 kg m3 or 0 6 125 lb ft3 10 2000 kg m3 or 0 6 125 lb ft3 10...

Страница 98: ...uty version 25 to 130 C or 13 to 266 F 25 to 130 C or 13 to 266 F 25 to 130 C or 13 to 266 F 25 to 130 C or 13 to 266 F Density 500 2000 kg m 3 or 30 125 lb ft 3 500 2000 kg m 3 or 30 125 lb ft 3 500...

Страница 99: ...cale deflection in range of 0 2 mA Pulse output not provided if fitted with option version 1 or 2 see above input and outputs Function all operating data adjustable open collector galvanically isolate...

Страница 100: ...martSystem Data Sheet Housing material die cast aluminium with polyurethane finish Mass flow Accuracies as of measured value water 20 C or 68 F Span 1 5 1 10 1 20 1 40 0 2 0 3 0 8 2 0 11 3 Measuring A...

Страница 101: ...ges PN40 550 21 65 740 29 13 500 19 69 640 25 20 950 37 40 1300 51 18 c ANSI 150 300 RF 550 21 65 740 29 13 500 19 69 676 26 61 950 37 40 1300 51 18 c DIN flanges PN63 550 21 65 740 29 13 514 20 24 67...

Страница 102: ...langes PN40 550 21 65 740 29 13 500 19 69 640 25 20 950 37 40 1300 51 18 c ANSI 150 300 RF 550 21 65 740 29 13 500 19 69 676 26 61 950 37 40 1300 51 18 c DIN flanges PN63 550 21 65 740 29 13 514 20 24...

Страница 103: ...c flammable or water endangering liquids you are kindly requested to check and ensure if necessary by rinsing or neutralising that all cavities in the flow meter are free from such dangerous substance...

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