KROHNE G-MFM4085 User Manual

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02/98

CORIMASS G+ Class

Installation and Operating Instruction s

Single straight tube mass flow meter

MFM 4085 K/F

How to use these installation and operating instructions

For easy reference these Instructions are divided into four parts. Only Part A (page 3) is needed for installation and initial start-up. All CORIMASS mass flowmeters of t he G-S eries are fact ory set to your or der sp ecif ication s . Part A Install flowmeter in the pipeline (Sect. 1), connect up (Sect. 2) and power the

flowmeter (Sect. 3).

The system is operational

Part B Operator control and functions of the MFC 085 Signal Converter. Part C Service and functional checks. Part D Technical data, dimensions and measuring principle.

Product liability and warranty

The CORIMASS mass flowmeter MFM 4085 is designed for the direct measurement of mass flow rate, product density and product temperature, and also indirectly enables measurement of parameters such as tota l mas s, concentration of dissolved substanc es and the volume flow.

For use in hazardous areas, special codes and r egul ations ar e applica ble wh i ch ar e spec i fied 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 solely with the purchaser.

Improper installation and operation of the flowmeters may lead to loss of warranty. In addition, the ”general conditions of sale” forming the basis of the p urch ase agreement a re

applicable. 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.

CE / EMC Standards / Approvals

• The Corimass MFM 4085 with the MFC 085 signal converter meet the requirements of the EU-EMC Directives and bear the CE symbol.

• The Corimass MFM 4085 K -Ex are approved as hazardous duty equipment to the harmonised European Standards and to Factory Mutual (FM). Further details are given in the ”Ex” supplementary instructions provided only with hazardous-duty equipment.

Technical data subject to change without notice

Contents

Part AInstallation and Start-up 5 - 24

1. Installation in the pipeline 5

1.1 General principles 5

1.2 Installation Guidelines 5

1.2.1 Mounting location 5

1.2.2 Connecting pipes 6

1.2.3 Mounting figures 8

1.2.4 Installation factor 8

1.2.5 Standard flange sizes for the flow meter 9

1.2.6 Cross talk 10

1.2.7 Recommended piping for use with the G-Meter 10

1.2.8 Inner Pipe diameters of the G-Series 10

1.3 External Heating and Insulation 11

1.3.1 Insulation 11

1.3.2 Electrical Trace Heating 13

1.3.3 Hot Fluid or Steam Heating 14

1.3.4 Heating Up from Cold 15

2. Electrical installation 17

2.1 Location and connecting cables 17

2.2 Connection to power 18

2.3 Inputs and outputs 18

2.4 Connection of Remote Meters 20

3. Start-up 21

3.1 Factory set parameters 21

3.2 Initial start-up 22

3.3 Installation factor 22

3.4 Zero point adjustment 22

3.5 Programming the converter with a bar magnet 24

Part BMFC 085 Signal Converter 25 - 75

4. Operation of the Signal Converter 25

4.1 Operating and check elements 25

4.2 Krohne Operating Concept 26

4.3 Key functions 27

4.3.1 How to enter programming mode 28

4.3.2 How to terminate programming mode 28

4.4 Table of programmable functions 31

4.5 Reset / Quit Menu - Totalizer reset and status indication acknowledgement 41

4.6 Status messages 43

4.7 Menu variations for systems with other output options 44

5 Descriptions of functions 45

5.1 Zero point adjustment 45

5.2 Low Flow cutoff 47

5.3 Time constant 47

5.4 Pro gramming the display for meas uremen t values 48

5.5 Programming Numeric Data 51

5.6 Setting the current output 52

5.7 Setting the frequency / pulse output 55

5.8 Setting the process alarm output (status) 59

5.9 Setting the control input (binary) 61

5.10 Setting the system control 62

5.11 Standby function 63

5.12 Density adjustment for maximum measuring accuracy 65

5.13 Specific gravity 69

5.14 User data 71

5.14.1 Programming the display language 71

5.14.2 Password protection of menus 71

5.14.3 Custody transfer protection code 72

5.14.4 Primary head type and tube parameters (CF1-5) 74

5.14.5 Location 75

Part CSpecial options, Functional checks, Service and Order numbers 76 - 95

6. Special options 76

6.1 Use in hazardous areas 76

6.2 Converter with non-standard output options 76

6.3 Concentration measure ments 76

6.4 Converter with Smart / Hart communication option 76

6.5 Converter with RS 485 communication option 77

6.6 Custody transfer option 77

7. Functional checks 77

7.1 Test functions 77

7.1.1 Testing the display 77

7.1.2 Testing current output 78

7.1.3 Testing pulse output 78

7.1.4 Testing alarm output 80

7.1.5 Testing control input 80

7.1.6 Viewing temperature and strain 81

7.1.7 Viewing primary head signal conditions 81

8. Service and Troubleshooting 82

8.1 Threads and ”O” ring of the converter housing lid 82

8.2 Replacing the conver ter el ectroni cs 82

8.3 Change of operating voltage and power fuse F9 83

8.3.1 Replacement of power fuse F9 83

8.3.2 Changing the operating voltage 83

8.4 Turning the display circuit board 84

8.5 Turning the Signal Converter housing 84

8.6 Troubleshooting 85

8.7 Fault finding 88

8.8 Checking the Primary head 91

8.8.1 Compact Meter 91

8.8.2 Remote Meter 92

8.9 Status warnings 93

9. Order numbers 95

Part DTechnical Data, Measurement principle and Block diagram 96 - 104

10. Technical data 96

10.1 Measuring ranges and error limits 96

10.2 Primary head 97

10.3 MFC 085 Signal Converter 98

10.4 Block diagram of Converter MFC 085 101

10.5 Instrument data plate 102

10.6 Dimensions and weights 102

11. Measuring principle 104

12. Software History 104

Part A Installation and Start-up

1. Installation in the pipeline

1.1 General principles

The MFM 4085 K/F CORIMASS mass flow meter provides high accuracy and excellent repeatability. Narrow band pass digital filtering, and the mathematically modelled internal primary head design provides exceptional immunity to external vibratory disturbances from nearby process equipment. The accuracy of the flow meter is not affected by velocity profile. The straight single tube means there is a very low risk of cavitation, and no air can be trapped inside the meter. No back pressure is required at the outlet of the meter. As with all Coriolis mass flow meters, the CORIMASS is an active device with its own energy source. A good installation is essential for the high measurement accuracy.

The following installation guidelines are practical to implement, particularly if planned before the CORIMASS is first installed. For further dimensions or connections, please refer to Section D, Technical Data.

1.2 Installation Guidelin e s

1.2.1 Mounting location

For the G+ no special mounting requirements are necessary. However, good general engineering practices for the installation of flow meters should still be observed.

The meter can be installed horizontally, in an upward sloping pipeline or vertically. For best

results, a vertical installation with flow in an upward direction is recommended.

Flow

1.2.2 Connecting pipes

Upward sloping install ation

Vertical instal lation (recommended)

Flow

Figure 1

Horizontal mounting

Flow

Avoid mounting the meter with long vertical drops after the meter. This could cause

siphoning and cause measurement errors.

Siphoning effect

Figure 2. Avoid long vertical drops

Install meter at least 4 × L downstream of pumps. ( where L = length of the meter )

> 4 × L

Figure 3

Avo id mounting th e meter at t he hig hest p oint in th e pipeline. Air or gas can accumulate

here and cause faulty measurements.

Figure 4

The use of reducers at the flanges is allowed. Extreme pipe size reductions should be

avoided due to possibility of cavitation and gassing. One size up from smallest available flange size is acceptable.

Figure 5

One size up from standard

The use of flexible hoses is allowed. For best results the meter should be supported by two

spool pieces and the hoses connected to these spool pieces. For low flow rates (less than 10%) secondary clamps may be required.

L L

Figure 6

Note: See table on next page for information on supports for distances, L.

To enable a good zero to be done, it is recommended that a shut-off valve be installed

downstream of the flow meter.

Valve for zeroing flow meter

Flow

The second valve is recommended if the pump is sw itc hed off to pr event back flow

Figure 7

Installing in a bypass

Figure 8

Should it become necessary to support the pipework, the following guidelines should be

fol low ed. Do not clamp the meter body or the process pi pework clo ser than di stance L, as shown in the table below. Due to the weight of the 800 to 3000 G, the pipework should be supported. Please note minimum support distances as per table.

Meter Size

10 G+ 21 100 G+ 35 300 G+ 48 800 G+ 48

1500 G+ 48 (DN 50) 70 (DN 80) 3000 G+ 48 (DN 80) 60 (DN 100)

L (cm)

8,8 13,8 18,9 18,9 18,9 (2”N.B.) 27,6 (3”N.B.) 18,9 (2”N.B.) 23,7 (3”N.B.)

L (inch)

Connecting pipes may have bends between the meter and supports

Figure 9

Fit valves, sensors, sight glasses, etc. outside the supports if possible.

1.2.3 Mounting fixtures

The connecting pipework must be in a stress free condition.

The meter should fit between the connecting pipe with perhaps 2 - 3 mm (1/8 inch) to spare.

It should not be necessary to force the pipes apart to fit meter. Flanges should be correctly aligned.

Tighten flange bolts evenly.

Do not fit rigid electrical conduit to the converter housing.

Do not fit supports or any fixtures to any part of the meter or connecting pipework between

meter and supports.

1.2.4 Installation factor

The installation factor feature is unique to the G-Series. This factor (found in menu 2.7.4) is a dimensionless number between 0 and 999 which is an indication of how well the instrument is installed and whether the product contained gas bubbles. This is a function of the amount of energy required to excite the measuring tube to its natural resonant frequency. The auto zero value (menu 1.1.1 or 3.1.1) should be as low as possible, typically less than 1% for normal installations and less than 2% for extreme conditions.

The following values are a guideline to a good installation: With the meter filled with water, the values should be less than the figure indicated.

Meter Size Installation factor

Non Ex

• Installation factor

10 G + 20 200 100 G + 10 150 300 G + 20 400 800 G + 20 300 1500 G + 30 300 3000 G + 40 400

• The higher installation factor for Ex instruments is due to the power limiting of the Zener barriers in the Exciter circuit, and does not mean bad installation.

• Product with higher density or entrained gas will exhibit higher installation factors.

Use the followin g procedur e t o check th e i nstallation fact or. Warm up the electro nics for at l east 30 minutes. Flush the meter with water or product to ensure that all trapped air has been removed.

Key Display

Line 2

→ ↑ → 6 × ↑ → 3 × ↑ →

Fct. (1).0 OPERATOR Fct. (2).0 TEST Fct. 2.(1) TEST DISP: Fct. 2.(7).0 TEST: TRANSD: Fct. 2.7.(1) SENSOR A Fct. 2.7.(4) INSTAL:FACT: Fct. xxx

Display Line 2

LEVEL

Display of installation factor

3 × ↵

↵

Fct. 2.7.(4) INSTAL:FACT Display

Not e: Terms in bracket s are flashing on the displ ay.

1.2.5 Standard flange sizes

The following is a list of flanges for the meters, which are supplied as standard.

10 G+ 100 G+ 300 G+ 800 G+ 1500 G+ 3000 G+

DN 10 PN 40 / ½” ANSI 150 DN 15 PN 40 / ¾” ANSI 150 DN 25 PN 40 / 1” ANSI 150 DN 40 PN 40 / 1½” ANSI 150 DN 50 PN 40 / 2” ANSI 150 DN 80 PN 40 / 3” ANSI 150

1.2.6 Cross talk

Mul tiple instruments of th e sam e si ze installed in the same structure m ay cause a problem with cross talk between the operating frequencies of the instruments.

If this type of installation is envisaged, please contact your nearest Krohne office or representative for assistance.

Instrument s of dif ferent sizes are nor mall y not a p r obl em . As a guide the following table of frequencies are provided for information ( +/- 5 Hz ) :

10 G+ 100 G+ 300 G+ 800 G+ 1500 G+ 3000 G+ Frequency in air (Hz) 230 223 253 250 290 295 Frequency in Water (Hz) 224 203 219 194 205 210

1.2.7 Inner Pipe diameters of the G-Series

Inner Diameter 10 G+ 100 G+ 300 G+ 800 G+ 1500 G+ 3000 G+ [mm] 4.93 14.46 23.58 37.60 47.96 68 [inch] 0.19 0.57 0.93 1.48 1.89 2.68 Tube thickness [mm] 0.71 0.71 0.91 1. 20 1.42 2.00

1.2.8 Sanitary Connections

The installation guidelines are the same for sanitary connections as for flanges up to the 300 G.

The 800 G, 1500 and 3000 G has a different requirement due to the weight of the meter. The standard sanitary connectors are not capable of carrying the weight of the meter. As a safety precaution Krohne has decided to ship the 800 G to 3000 G with extended spool pieces with the customer-requested sanitary connectors on the ends.

The installation length is thus increased with this extra set of spool pieces. This has the advantage of having the correct length and outside diameter of the pipe to enable secure clamping and a vastly improved installation. Supports must be used on the extra spool piece close to the sanitary connection.

All G+ meters with sanitary connections have stainless steel adaptor, which screw on each end of the meter using seals between the adaptor and the meter. The standard seal material is PTFE on 10 G+ and 100 G+, and Viton for all other sizes. Other materials are available on request. It is important that the adaptors are properly tightened to ensure crevice free seal (see table on the next page for correct torque tightening valves.

METER

SIZE

SIZE & TYPE

Seal is

modelled on:

STD.

MATERIAL

TYP.

TORQUE

KFTC part/drawing ALTERN.

MAT.

10 G ½” Tri-clamp PTFE 18 3.85055.00 .00 None 100 G ¾” Tri-clamp PTFE 16 3.85155.00.00 Nitrile

Silicone EPDM

Viton

300 G 1” IDF/ISS Viton 8 5.85065.00.00 Nitrile

EPDM PTFE

800 G DN40

DIN11851

Viton 27.5 5.85117.00.00 Nitrile

EPDM Silicone

1500 G 2” IDF/ISS Viton 24 5.85162.00.00 Nitrile

EPDM PTFE

Installation lengths for sanitary connections - please contact Krohne for further details as installation lengths depend on customer requirements.

• Typical Torque on request.

TYP.

TORQUE

•

8 9

•

11.5

•

39.5

1.3 External Heating and Insulation

When installing the G+ Meter in heated and insulated pipelines, it is not generally necessary or desirable to heat or insulate the case of the meter. This is because t he central measuring tube is not thermally coupled to the case, except at the extreme ends. It is then only necessary to insulate the flanges as shown in the attached drawings. However, it is permissible to insulate the case of G+ Meters and special units with heating jacket s are a vail able.

The fo llowi ng notes will a ct as a gu ide fo r use of t he G+ Met er wit h diff erent t ypes of heati ng and insulation systems. Please note that freezing of the product within the meter cannot damage the meter.

1.3.1 Insulation

It is recommended that the pipework and insulation material be installed as in figure 10. The ins ul ati on ca n b e Rubb er, Foam , G las s Fi br e or a ny ot her pro ces s su it abl e mat eri al . It s houl d, however, be firmly fixed with no components such as straps or covers that can vibrate.

Figure 10

Insulation Principle

Notes:

1. Insulation Material: Rubber, Foam, Glass Fibre, or any other process suitable material.

2. Insulation must be firmly fixed to the pipework. If especially desired by the customer, it is permissible to insulate the meter itself. If this is

required, then the following guidelines should be followed. The insulation must be firmly fixed to the meter with no components such as straps or covers

that can vibrate (figure 11). DO NOT insulate converter (figure 12).

Figure 11

Important No te:

When insulating Ex meters, insulation must not rise above the square plate that connects the sensor and converter (figure 12).

Figure 12

In addition, any heat tracing used (electrical or fluid) must not exceed 130°C for titanium meters (optional 150°C). For zirconium meters maximum temperature is 100°C. The Ex temperature cl asses are also different , see table below.

Ex Temperature Classes for Insulated/Heated Meters

Process Temperature Temperature Class

65°C T5 100°C T4 130°C T3

Optional 150°C T3-T1 If remote meters are insulated (see figure 13), it is imperative that the insulation does not rise above the square plate mentioned above and a thermal insulation adapter must be purchased from Krohne and fitted as shown.

Figure 13

1.3.2 Electrical Trace Heating

The use of electrical heating tape is illustrated in figures 14,15,16 and 17. The use of selflimiting tape is ideal, but other types of electrical heating may be used. Any thermostat should be fitted to the adjacent pipework, if this is done it should be firmly fixed with no loose wires or connections that could vibrate. If only pipework and flanges are insulated, two turns of heating tape should be tightly applied to the flanges and covered in insulation as shown. All heating tapes should be tightly fixed with no areas that could vibrate. Between the flanges the heating tape should be secured to the converter neck, but insulated from it (figure 16) or run back to the first clamp and then in a loop to the opposite clamp (figure 17). Krohne can supply a list of electrical heating tape suppliers, if required. If the meter case is insulated then heating tape may be applied tightly under the insulation. It is recommended that the heating tape be applied axially and continuously taped down (figure 15).

Figure 14

Figure 15

Figure 16

The converter must not be insulated or heated. For Ex meters refer to ‘important note’ in ‘Insulation’ section above. In all cases, the installation factor should be monitored and maintained within the normal levels.

Figure 17

1.3.3 Hot Fluid or Steam Heating

Where pipelines are jacketed with concentric pipes, carrying a hot fluid such as water or steam, follow the following recommendations. The jacket should be of as small a diameter as possible and the wall thickness should be as thin as possible (figure 18).

A radial gap between the process pipe and the inside of the jacket of 5-6mm is suitable. The minimum clamping distance is increased (figure 18). The first clamp should be moved

further away from the meter. It i s an advant age t o avoi d proc ess pipewo rk of a large diamet er comp ared to the meter bore. Krohne can provide further guidelines and dimensions of suitable pipes and jackets. The jacket must be completely filled with no air pockets present. Any clamps or supports must be applied at a distance greater than L.

Figure18

Also availa ble are special jacketed meters as s hown in fi gure 19. These are also Ex app roved . Remote jacketed meter must be fitted with an insulation adaptor shown in fig. 13.

Figure 19

In all ca s es, the installat io n fa ctor sh ould be moni to red and m aintain ed wit hin normal levels.

1.3.4 Heating Up From Cold

The proceeding insulation and heating instructions also apply in this case, together with the following notes:

The low thermal coupling between the Titanium tube and the flanges means that maintaining a G+ Meter at a desired temperature is straight forward as already described, however, heating from cold an uninsulated meter can be a lengthy process, particularly if the customer’s product could be damaged by high rates of heat input at the flanges. The areas at each end of the meter can be heated from 20°C to 60°C in about 2 hours, but the centre of the meter can take 5 hours to reach this temperature particularly if the product has solidified. It is possible to speed this up if the meter is mounted vertically and a reduction of abou t an hour is possible, if the case is insulated. If the case is also heated, heating times are further cut.

The above comments assume that there is no flow through the meter. If there is flow through the meter then the desired temperature can be reached within a few minutes.

Another important fact to note, is that it is rarely necessary to fully melt all the product which has solidified in the meter, as it has been demonstrated that any ‘plug’ of product can be pushed through the meter by pumping pressures of less than 1 bar. Any ‘plug’ would be rapidly melted in the joining pipework. This fact is an important benefit of the single straight tube design and is not true of bent tube meters, or meters with flow dividers and multiple tubes.

Temperature Note

Most work in this subject has considered product temperature up to 80°C, if higher temperatures are required by the customer the proceeding guidelines still apply, but heat up from cold times will be extended.

The G+ Met ers ha ve maximum o perating t emper atures, as foll ows: Zirconium Tubes 100°C

Titanium Tubes 130°C Titanium Tubes (to special order) 150°C

On Titanium tube meters, it is, however, possible to exceed 150°C up to an absolute maximum of 200°C, for short periods. The time is limited by the initial temperature and final temperature. To assess the time allowable, refer to figures 11,12 and 13, which cover the 10G+, 100G+ and 300G+ meters. For the 800G+ and 1500G+ refer to Krohne Ltd.

This does not apply to the 3000G+. These meters must not exceed 130°C. Zirconium tube meters must never exceed 100°C.

ALLOWABLE TIME AT HIGH TEMP .

10 G METER

130 120 110 100

90 80 70 60 50

TIME MIN.

40 30 20 10

120 130 140 150 160 170 180 190 200

Initial temp 30 C

Initial temp 70 C

Initial temp 120 C

TEMP. C

ALLOWABLE TIME AT HIGH TEMP.

120 110 100

90 80 70 60 50

TIME MIN.

40 30 20 10

120 130 140 150 160 170 180 190 200

100G METER

TEMP. C

Initial temp 30 C Initial temp 70 C

Initial temp 120

ALLOWABLE TIME AT HIGH TMP.

120 110 100

90 80 70 60 50

TIME MIN.

40 30 20 10

120 130 140 150 160 170 180 190 200

2. Electrical installation

2.1 Location and connecting cables

300G/ 800G METER

Initial

TEMP. C

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 and apply sealant to unused cable entries.

– Do not kin k cabl es directly at ca ble entries. – Provide water drip point (U bend in cable). – Do not connect rigid conduit to cable entries. – If c ables are a tight fit, enla r ge in side diameter o f cable gland by removing t he appropriate

ring(s) from the seal.

2.2 Connection to power

Please ensure that the information about power given on the data plate corresponds to the locally ava ilable mains voltage.

– Note information given on the instrument data plate (voltage, frequency)! – Electrical connection in conformity with IEC 364 or equivalent national standard.

Special regulations apply to installation in hazardous areas. Please refer to separate "Ex" insta llat io n in struction s .

– The PE protective ground conductor must be connected to the separate U-clamp

termin al in t he terminal box of the signal converter.

– Do not cross or loop the cables in the terminal box of the signal converter. Use separate

(PG or NPT) cable glands for power and output cables.

– Ensure that the screw thread of the round cover on the terminal box is well greased at all

times.

NOTE: The grease used must be non-corrosive to aluminium; typically it must be resin- and

acid-free.

– Protect sealing ring from da mage .

5 6 4 4.1 4.2 11 12

N L AC

+ DC

Outputs and connections see S ect. 2.3

–

Power and signal connections for MFC 085 K

2.3 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.

Table of input/output connections

Trm. No.

5 Common (-) Common (-) 6 Current output (+) Curr ent output 1 (+) 4 Control input Control input.

4.1 Pulse output Current output 2 (+)

4.2 Status out put (active) Sta tus ou tput (pas sive)

* The inputs/outputs share a common signal ground that is galvanically isolated from ground

(PE).

Option 1

(Current, pulse, status

output and control input )

Option 2

(2 current,NGI

status ou tp ut )

For the standard converter, the pulse output is passive and requires an external voltage source for operation. In addition, the signal may need protection from external electrical interference. The use of screened cables and a filter capacitor next to any counter is recommended. (Fig. a)

It is possible to connect the pulse output without using an external voltage supply. However to do this the function of the alarm output must be sacrificed. (Fig. b). If the alarm o utput is used to power the pu lse signa l then the followin g settings must be made in the menus.

(i) Fct. 3.5.1 ALARM FUNCTION must be set to OFF (ii) Fct. 3.5.2 ALARM ACTIVE LEVEL must be set to ACTIVE LOW.

(Max. 24 V DC)

ext

150 mA)

(

≤

ext

Fig. a Pr eferred connections to an external counter with separate power supply (Example). For correct wiring see table of Input/ output connections

Fig. b Connection without external voltage source (Example). For correct wiring see

table of Input/ output connection

Additional input/output options

Opt ion 4*

(Current an d

RS485)

No.

5 Common

(-)

6 Current

output 1 (+)

4 TX/RX TX/RX Control Input Current

4.1 TX/RX TX/RX Pulse

4.2 +5V +5V Pulse

Opt ion 5*

(Current an d Modbus)

Common (-)

Current output 1 (+)

Option 6

(1 Current, 1 Dual phase pu lse output an d control input)

Common (-)

Current output 1 (+)

Output A

Output B

Option C

(2 current, pulse an d control input)

Common (-)

Current output (+)

output 2 (+) Control Input Current

Pulse Output

Option D

(3 current and

pulse)

Common (-)

Current output 1 (+)

Current output 2 (+)

output 3 (+) Pulse output Control Input status output

Option E

(3 current and

control input)

Common (-)

Current output 1 (+)

Current output 2 (+)

Current output 3 (+)

Option F

(3 current and

status output)

Common (-)

Current output 1 (+)

Current output 2 (+)

Current output 3 (+)

(passive)

The p uls e out alarm ou tputs where sel ected are passi ve. * Refer to separate RS 485 or Modbus manual

2.4 Connection of remote meters

The G meter can be supplied as remote meter with 5 m cable. Under no circumstances should the cable be cut shorter or joined to increase its length. The meter is calibrated with this 5m length. Any changes will influence the performance of the meter.

There are two di fferent conf igurations of remote meter, on the firs t vers ion the cable is fixed at the converter end and the second has a terminal junction box at the converter end.

145

115

The connection on the transducer end is done for both versions over a special connector. On the fixed version the connection on the converter side is fixed. The second option uses a junction box for the connection. Wiring is done according to the following figure. PG 16 or ¾” NPT adaptor are available with the junction box version to put the cable into flexible conduit.

3. Start-up

3.1 Factory Set Parameters

The mass flow meter leaves the factory ready to be used. All process data has been program med a ccor ding to the c ustomer order. See factory programming s heet d elivered with the flow meter.

When no process details were supplied at the time of order, the mass flow meter is programmed to a standard default set of values and functions.

The current and pulse outputs treat all flows as positive. The actual flow and quantity is thereby measured independent of the flow direction. The indicator will indicate a ” – ” or ” + ” in front of the flow rate.

These factory-set settings for current and pulse may cause an error under the following conditions: When the pump is stopped and a reverse flow is present, which is larger than the low flow cut-off or when totalizing should be indicated for both flow directions.

To a void these poss ible prob lems: a) Set fl ow mo de (Fc t . 3.1.8) to either fl ow > 0 or Flow < 0, so that rever se fl ows are igno red.

or b) Increase Low Flow cut-off (Fct. 3.1.7) so that small reverse flows are ignored. or c) Set the alarm outp ut (Fct. 3.5.1) to DIRECTION s o t hat extern al eq uipment c an dif ferentiate

between positive and negative flows.

3.2 Initial Start-up

• Please check that the power supply corresponds to the information supplied on the data plate.

• Switch on the power supply.

• On switch-on, the signal converter first carries out a self-test. The following sequence is

displayed:

TEST

10 G GX.XX

Pri mary Head S oftware V ersion

STARTUP

Mass flow will be displayed following a brief settling phase for the primary head.

A minimum warm-up time of 30 minutes is recommended to ensure stable measurement operation.

• For stable and accurate mass flow results the following should be checked:

a) The quality of the mechanical installation. See Sect. 1.2.2. b) A good zero point calibration should be done. See Sect. 3.4. Further information

regarding zero point calibration can be found in Sect. 5.

3.3 Installation factor

The extensive self-diagnosis functions of the MFM 4085 also include a so-called installation factor. This factor indicates whether the flow meter has been correctly installed in the pipeline and whether the mounting supports have been fitted at defined points. For that reason, the installation factor must without fail be checked during the initial start-up phase. The installation factor can be checked by way of the keystroke combination as in Sect. 1.2.3.

If corr ectl y install ed, the val ue of the installation facto r when the pr imar y head is full of water should be as per table in section 1.2.3. If the figure is higher, the specified accuracy of the flow meter cannot be guaranteed. Please check the installation again on the basis of the installation information (Sect. 1.2). If necessary adjust clamping with the meter displaying the installation factor to obtain optimum performance.

3.4 Zero point adjustment

After installation adjust the zero point. To do this, the primary head must be completely filled with the liquid product without gas or air inclusions. This is best obtained by allowing the liquid product to flow through the primary head for approx. 2 minutes at a throughput rate of greater than 50% of rated flow. Subseque ntly ensure tha t flow co mes to a complete stop in the primary head (see fig 10, Section 1.2) for setting the zero without interruption to product flow, use a bypass set-up as shown in fig. 11 (Section 1.2). For best results the zero adjustment should be performed with the front cover in place. To activate the calibration, use the bar magnet provided to operate the magnetic sensors on the display.

Now initiate zero adjustment by way of the following keystroke combination: Start from measuring mode

Key Display

line 1 line 2

→ Fct. (1).0 OPERATOR

2x→ Fc t. 1. 1.(1) Z ERO SET

→ (MEASURE.VAL.) ↵ CALIB. (NO) ↑ CALI B. ( YES) ↵ X.X PERCENT

ACCEPT (YES) ↵ Fct. 1.1.(1) ZERO SET 3x↵ ACCEPT (YES) ↵ Display

Under certain conditions, it may not be possible to adjust the zero point: – If the medium is in motion. Shut-off valves not tightly closed.

– If there are gaseous inclusions in the primary head. Flush the primary head and repeat the

calibration.

– If resonant oscillations of the piping are interfering with the primary head. Check the

clamping of the in strument.

– If there ar e active warning(s ) in the status m es sage list. (See section 4.6) In such cases, the zero point adjustment procedure is automatically aborted and the following

message is displayed for a short time:

ZERO.ERROR

Then the converter returns to the start of the function 1.1.1:

Fct. 1.1.1 ZERO SET

Further information on zero point adjustment is given in Section 5. The CORIMASS MFM 4085 is ready to operate after zero has been adjusted. All parameters have been fa ctory-set in keepin g with the data s pecified in your ord er. Detailed

information for further setting of the signal converter will be found in Part B of the operating instructions.

3.5 Programming the converter with a bar magnet

• The converte r can be programme d by mean s of the magnet ic se nsors moun te d on the faceplate without removing the front lid.

• 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.

• These sensors then duplicate the functions of the push buttons.

Part B MFC 085 Signal Converter

4. Operation of the Signal converter

4.1 Operating and check elements

The o perating elements are accessibl e after removing the c over of the elect ronics section usi ng the special wrench. The converter is also programmable with magnetic sensors and a bar magnet without removing the covers of the electronic housing.

Caution:

The operator control concept consists of three levels (horizontal). See next page.

Setting level:

Parameter check level: Fct. 4.0 PARAM.ERROR

Reset/acknowledge

level (Qui t):

Do not damage the screw thread and the gasket, never allow dirt to accumulate, and make sure they are well greased at all times.

① Display 1st (top) line ② Display 2nd (middle line ③ Display 3rd (bottom line:

arrows (τ) to identify the state of the signal converter

Status

– –

④ Keys for operator control of the

signal converter.

⑤ Magnetic sensors to set the

converter by means of a handheld bar magnet without opening the housing. Function of sensors same as keys ℘.

⑥ Compass field, signals

actuation of a key.

This level is divided into three main menus:

Fct. 1.0 OPERATION

important parameters and functions of Menu 3 (install) to allow rapid changes to be made during the measurement mode.

Fct. 2.0 TEST

(displays, outputs, measuring range).

Fct. 3.0 INSTALL

parameters and functions can be set in this menu. After exiting from the ”Sett ing l evel”, th e sign al convert er ch ecks

new data for plausibility. If an error is detected, the signal converter indicates PARAM.ERROR in Fct. 4.0. In this menu, all functions can be scanned and those changed that are not ”plausible”. This menu has two tasks and is selected via Entry Code 2 ( ↵ ↑ → )

1) Resetting of totalizer, provided that resetting is enabled under Fct. 3.8.5 ENABL.RESET, input YES.

2) Status message and acknowledgement (Quit) messages that have occurred since the last acknowledgement are indicated in a list. After elimination of the cause(s) and acknowledgement, these mes sages are deleted from th e list .

: Test menu for checking the signal converter

: This menu contains only the most

: All flow measurement- and flowmeter-spe cific

: This leve l is not se lectable.

message indicator

Standby

mode

4.2 Krohne Operating Concept

4.3 Key functions

Function of the keys

Cursor

The location of the cursor on the display is indicated by flashing characters. This cou ld be a sing le digit when entering number; numeric sig n ( + or -) ; meas ure-ment units (g,kg,t etc.); or any other text field. Throughout this manual the location of the cursor, in programming examples, will be indicated by parentheses ( ) around 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 00000(.)000

- Menu Increase menu number by 1. i.e. Fct. 1.(1).0 changes to Fct. 1.( 2 ).0 When the menu number reaches its maximum the next ↑ changes the number to 1. i.e. Fct 1.(5).0 changes to Fct 1.(1).0

- Text Change text field. i.e. ”YES” to ”NO” or ”g” to ”kg” to ”t” etc.

- Sign Toggle ”+” to ”-”

→

Cursor or Right Key. This key moves the cursor onto the next field to be edited. (usually the next on the right).

- Number Move cursor from 12(3).50 to 123(.)50 to 123.(5)0

- Text Move to next field. i.e. (kg)/min to kg/(min)

- Menu Move to next menu column: i.e. from Fct 1.(2).0 to Fct. 1.2.(1) or if the cursor is already in the rightmost column: invoke that menu function. i.e. from Fct. 1.2. (1) press → to edit MASS FLOW format.

↵ Accept or Enter Key.

-Within a

Accept changes (if any) and exit the function.

function

-Menu Move cursor to the next column on the left. i.e. from Fct. 1.2.(1) back to Fct. 1.(2).0 If the cursor is already in the leftmost column then ↵ exits the menus. See next box: ”To terminate” .

Note:

If numerical values are set that are outside the permissible input range, the display shows the min. or max. . accept ab l e val ue. After pr ess i ng the ↵ the numb er m ay b e c orr ec ted.

4.3.1 How to enter programming mode

To start:

Display Comments

→ Pres s Fct . 1.0

If this appears, see next box: ”Function of the keys ” . Operation or

CodE 1

---------

If this appears on the display, set the 9-keystroke Entry

CodE 1 .

Factory setting: → → → ↵ ↵ ↵ ↑ ↑ ↑

1st- 8thplace (key)

9th place (key)

CodE 1 ∗∗∗∗∗∗∗∗-

Fct. 1.0 Operation

CodE 1 (9 alpha

Each keystroke acknowledged by " ∗ " in display.

If this appears, see box: ”Function of the keys ” below.

A wrong Entry CodE 1 was keyed in. Press any key and set

the correct 9-keystroke characters)

4.3.2 How to terminate Programming mode To terminate:

Press ↵ 1-3 times

↵ + 12.345

Fct (1).0 OPERATOR

kg/min

Press ↵ 1-3 times until the cursor is under the extreme left menu column. (Fct. 1.0 , 2.0 or 3.0)

If no changes have been made to the system’s configuration return directly to the measurement mode.

or (ACCEPT YES) Changes have been detected. Press ↵ to accept these

changes. or

↑

(ACCEPT NO)

Press ↵ to reject changes and return directly to measurement mode. or

↑

(GO BACK)

Press ↵ to return to the menus, Fct. 1.(0) to make further changes

↵ PARAM.CHECK Assuming ACCEPT YES was selected,

the system now checks the new setting for errors.

After 1-2 sec. + 12.345

No errors detected. Return to measurement mode.

kg/min

or Fct. (4).0 PARAM.ERROR

Errors were detected. The sub-menus of 4.0 will guide

the operator to those functions where problems have

been identified.

Examples

The cursor (flashing part of display) has a grey background in the following examples:

To start programming

Measurement mode Programming mode

13.571

→

Fct. 1. 0

m3 / h r OPERAT I ON

PLEASE NOTE: When ”yes” is set under Fct. 3.8.2 ENTRY CODE, the following will

appear in the display after pressing the → key:

CodE 1 - - - - - - - - -.

The 9-stroke entry code must now be entered. Factory setting: → → → ↵ ↵ ↵ ↑ ↑ ↑. Each keystroke is acknowledged by an ” ∗ ” in the display.

To terminate programming

Press ↵ key repeatedly until one of the following menus are displayed:

Fct. 1.0 OPERATION, Fct. 2.0 TEST or Fct. 3.0 INSTALL

Press ↵ key

Fct. 3. 0

INSTALL. A C C E P

↵

Y E S

To accept the new parameters

Press ↵ to confirm. ”PARAM.CHECK” will appear in th e displa y.

The measuring mode will continue after a few seconds with the new parameters, when no errors are detected.

When an error is detec ted the di spla y will indicate ”Fct. 4. 0 PARAM.ERROR”. The error parameters can be called up in this menu and corrected.

New parameters not to be accepted

When the new param eters are no t to be accepted, the following keystrokes should be executed: Press ↑ key. The display will show ”ACCEPT NO”. When the ↵ key is then pressed, the instrument will return to the measurement mode using the old parameters.

To change numeric values

Increase numeric value

210. 5 0

↑

210.6 0

kg/mi n kg/mi n

To move the cursor (flashing digit)

To move to the right

210. 6 0

→

210.6 0

kg/mi n kg/mi n

To move the decimal point

To move to the right

21. 060

↑

210. 6 0

kg/mi n kg/mi 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 v alues autom aticall y c onv er t ed

Select new unit

0.21060

↑

210.60

g /min k g /min

Alternative time unit

210. 60

→

k g /min kg/m i n

To change from numeric values back to text

Alternative engineering units

210. 60

→

kg/mi n k g /min

Return to function display

10.3

↵

Sec TIMECONST.

210.60

F c t. 1. 1. 3

4.4 Table of programmable functions

Fct. No. Text Description and settings

1.0 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 Fc t. 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. See Fct. 3.1.3

1.1.4 STANDBY Switching between measuring operation and standby. See Fct. 3.1.4

1.2.0 DISPLAY Submenu 1.2.0 Display

1.2.1 CYCL.DISP Switching between steady display and cyclic display

1.2.2 STATUS MSG Sel ects which status messages should be displayed

1.2.3 MASS FLOW Unit for mass flow. See Fct. 3.2.3

1.2.4 MASS TOTAL Unit for mass total. See Fct. 3.2. 4

1.2.5 DENSITY Unit for density. see Fct. 3.2.5

1.2.6 TEMPERAT Unit for temperature. see Fct. 3. 2.6

1.2.7 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 mea su rement. See separate concentration meas urement instruction manual

1.2.10 CONC.MEAS See 1.2.9

1.2.11 CONC.MEAS See 1.2.9

1.3.0 CUR.OUTP. I Submenu 1.3.0 Current output I.

1.3.1 FUNCTIO N I Function current output I. see Fct. 3.3.1

1.3.2 MIN.VALUE* Minimum range for current output I see Fct. 3. 3.3

1.3.3 MAX.VALUE

Maximu m ra n ge for current ou tp ut I see Fct. 3.3.4

1.4.0 PULS.OUTP. P Submen u 1.4.0 Pulse, frequency output P. see Fct. 3.4.0

1.4.1 FUNCTIO N P Select. Parameter to be totalized

1.4.2 PULSE/MASS * Select. Pulse per unit

1.4.3 PULSE WIDTH * Select pulse width in milliseconds

1.5.0 ALARM.OUT.A Submenu 1.5.0 Process alarm output A. see Fc t. 3.5.0

1.5.1 FUNCTIO N A Se lect ala r m functio n. See Fc t. 3.5.1

1.5.2 ACTIV.LEVEL Select. active high or low. See Fct. 3.5.2

Exact disp l ay d epends on s elec ted function. See su b- menu 3.3.0

Fct. No. Text Description and settings

2.0 TEST Main Menu 2.0. Test functions

2.1 TEST DISP. Carry ou t disp l ay te st. Start with the key → (Duration of test approx. 30 sec.). Stop test at any time with the ↵ key.

2.2 TEST I Test current output I * SURE (NO). Use the ↑ key to select YES, then press ↵. * 0 mA wil l be output f rom t he converter. U se th e ↑ key

to select test currents from the list below. 0 mA, 2 mA, 4 mA, 10 mA, 16mA, 20 mA, 22 mA. To exit test mode, press the ↵ key at any time.

2.3 TEST P Test frequency output P * SURE (NO). Use the ↑ key to select YES ,then

press ↵ key.

2.3.1 FREQUENCY * LEVEL LOW 0 volt DC level will be output from the

converter.

Use the ↑ key to select test signals from the list below. * LEVEL HIGH (+ V volts dc) * 1 Hz * 100 Hz * 10 Hz *1000 Hz

2.3.2 TEST PULSE * Test Pulse Use the ↑ key to select desired pulse width from the list below:

∗ 0.4 mSec ∗ 100.0 mSec ∗ 1.0 mSec ∗ 500.0 mSec ∗ 10.0 mSec

Then press ↵. 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 terminal.

Press the ↑ key to switch output to:

* LEVEL HIGH . +24V dc is output on the alarm terminal.

To exit test mode, press the ↵ key at any time.

2.5 TEST INP.E Test control input The a ctu al in put level, HI or LO , and t he selected functi ons are displa yed see Fct. 3.6.1 End test by pressing the ↵ key.

2.6 TEST TEMP. Test temperature and strain gauge Start with the → key . The temperature in °C is display ed. Use the ↑ key to dis play the t emperature in °F. Us e t he

↑ key again to display strain. End the test by pressing ↵ key

2.7.0 TEST.PRIMRY. Sub menu 2.7.0 Test primary head values.

2.7.1 SENSOR A Monitor the amplitudes of sensor A and B

2.7.2 SENSOR B as percentage of their max. value. (80% is ideal) Start test with the → key. End the test with the ↵ key.

2.7.3 FREQUENCY Monitor the primary head frequency. Start test with the → key. End the test with the ↵ key.

2.7.4 INSTAL.FACT. Monitor the primary head's drive level. Start test with the → key. End test with the ↵ key.

Fct. No. Text Description and settings

3.0 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. 20 sec. duration)

Display: Actual flow rate as percent of the maximum rated flow for the primary head. (Q

100%

3) Select: ACCEPT YES or NO * SET.VALUE Direct input of a zero flow offset. Units: As sel ected by Fct. 1.2.1 or 3.2.1

3.1.2 L.F. CUTOFF Low flow cutoff Value: 0 to 10 percent of nominal flow

3.1.3 TIME CONST. Time constant for output of measured values 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: It is not possible to switch directly

from STOP to STANDBY.

3.1.5 PRIMRY.TYPE Type of the primary head ** Using t he ↑ key select the primary head type that is connected to the converter: * 10 G * 800 G *100 G *1500 G *300 G *3000 G Then press → key to select material field, then ↑ key to select: * T * T+ * Z * Z+ as per the data plate

3.1.6 CF5 Primary head constant. ** Displays the primary head constant as stamped on the primary head’s data plate. (Password protected)

3.1.7 FLOW DIR. Define direction of flow. Select either FORWARD or BACKWARD

3.1.8 FLOW MODE Define whether bi-directional or uni-directional flow is expected. Select either: * FLOW > 0 (Ignore negative flows) * FLOW < 0 (Ignore positive flows) * FLOW +/- (Allow positive and negative flows)

)

** These menus are protected by the Code 4 password, see Fct. 3.8.8

Fct. No. Text Description and settings

3.2.0 DISPLAY Su bmenu 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. Which status messages to be displayed ? * NO MESSAGE (= no warning messages in main

display, warning system ignores status of outputs)

* PRIMRY.HEAD (= light warning messages in the

main display, warning system ignores status of outputs)

* OUTPUT (= output saturation/alarm status

messages in the main display)

* ALL MSG. (= all warning messages in the main

display. System responds to output status)

3.2.3 MASS FLOW Units and format for mass flow display * g, kg, t, oz, lb per s, min, h, d * Number of digits after the d ecimal point selectabl e.

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, kg, t, per cm3, dm3, litre, m3 or

oz, lb per in3 ,ft3 , USgal, gallon or SG (Specific Gravity relative to water at 20°C)

* Number of digits after the decimal point selectable.

3.2.6 TEMPERAT. Units for temperature *°C or °F * Format fixed at 1 decimal place

3.2.7 VOLUME.FLOW Units and format for volume flow * Select OFF (no volume flow d ispl ay) or *cm3, dm3, litre, m3 , in3 ,ft3 , USgal, or gallon

per * s, min, hr, day * Number of digits after the decimal point selectable.

3.2.8 VOL.TOTAL Units and format for totalizer cm3, dm3, liter , m3, inch3, ft3, US gal, gallon.

3.2.9 to 3.2.11 Concentration menu when installed. Please refer to separate Concentration instruction manual

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. 4.7

3.3.1 FUNCTIO N 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. 3.3.4] output as current in range [Fct 3.3.2] 0/4-20mA)

* DE NSIT Y (Density in range MIN [Fct. 3.3.3] to MAX

[Fct. 3.3.4] output as current in range [Fct 3.3.2] 0/4-20 mA)

* TEMPERATUR (Temperature in range MIN [Fct. 3.3.3]

to MAX [Fct. 3.3.4] output as current in range [Fct 3.3.2] 0/4-20 mA)

* VOL.FLOW (Volume flow in range MIN [Fct. 3.3.3]

to MAX [Fct. 3.3.4] output as current in range [Fct 3.3.2] 0/4-20 mA) SOLUTE.FLOW Concentration measurement CONC. BY MASS functions available if installed CONC.BY (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 the following by pressing ↑ key and then ↵ key *0-20 mA *4-20 mA * 0-20/22 mA (O/P = 22 mA when error detected) * 2/4-20 mA (O/P = 2 mA when error detected) * 3.5/4-2 0 m A (O/P = 3.5 mA when error detec ted)

3.3.3 MIN.VALUE Value of measured quantity as set by Fct. 3.3.1

or MIN. FLOW, that corresponds to the minimum output current or MIN. DENSITY (0 or 4 mA as set by 3.3.2) or MIN. TEMP. or MIN V.FLOW or MIN.CONC. Menu not available if Function 3.3.1 is set to OFF or

DIRECTION

3.3.4 MAX.VALUE Value of measured quantity as set by Fct. 3.3.1

or MAX. FLOW, that corresponds to an output current of 20 mA or MAX. DENSITY, or MAX TEMP or MAX V.FLOW or MAX.CONC Menu not available if Function 3.3.1 is set to OFF or

DIRECTION

Fct. No. Text Description and settings

3.4.0 PULS.OUTP. P Submenu 3.4.0 Frequency output P

3.4.1 FUNCTIO N 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. 3.4.3 and 3.4.4) * MASS TOTAL(1 pulse = fixed mass as set in Fct 3.4.2) * DENSITY (Frequency output 0 to MAX Freq. Hz =

Density in range: MIN.DENSITY to MAX.DENSITY as

set in Fct. 3.4.3 an d 3.4.4) * TEMPERAT. (Frequency output 0 to MAX Freq. Hz =

Temperature in range: MIN. TEMP to MAX. TEMP as

set in Fct. 3.4.3 an d 3.4.4) * VOLUME.FLOW(Frequency output 0 to MAX Freq. Hz

= Volume flow in range: MIN. V.FLOW to MAX.

V.FLOW as set in Fct. 3.4.3 and Fct. 3.4.4) * VOL.TOTAL(1 pulse = fixed volume as set in Fct 3.4.2)

SOLUTE.FLOW

SOLUTE.FLOW Concentration parameters if

CONC.BY.MASS option installed. See separate

CON:BY:VOLUME instruction manual. * DIRECTION (Negative flow gives output of 0 volts DC ,

Positive flow gives output of +V volts DC)

3.4.2 PULSE/MASS M ass per pulse value for function TOTAL MASS or PULSE/VOL. Volume per pulse value for function VOL. TOTAL or PULSE/TIME Maximum frequency value for functions MASS FLOW,

DENSITY, TEMPERATUR and VOLUME.FLOW or CONC.OPTIONS. Not accessible for functions OFF and DIRECTION.

3.4.3 MIN.VALUE Value of measured quantity that corresponds to or MIN. FLOW, 0 Hz output or MIN. DENSITY, or MIN. TEMP. or MIN. V.FLOW or CONC.OPTIONS or PULSE.WIDTH For functions MASS TOTAL, VOL.TOTAL OR

SOL.TOTAL. Not accessible for functions OFF and DIRECTIONS

3.4.4 Full Scale Value of measured quantity that corresponds to or MAX. FLOW, Max. Frequency or MAX. DENSITY or MAX TEMP. or MAX V.FLOW or CO NC.OPTIONS Not accessible for functions OFF, DIRECTION, TOTAL

MASS TOTAL, or VOL. TOTAL

Fct. No. Text Description and settings

}

3.5.0 ALARM.OUT.A Sub menu 3.5.0 Process alarm output

3.5.1 FUNCTIO N 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. 3.5.3 and 3.5.4)

* MASS TOTAL (Alarm active if totaliser goes outside

limits as set in Fcts. 3.5.3 and 3.5.4)

* DENSITY (Alarm active if density goes outside limits

as set in Fcts. 3.5.3 and 3.5.4)

* TEMPERAT. (Alarm active if temperature goes outside

limits as set in Fcts. 3.5.3 and 3.5.4)

* VOLUME.FLOW (Alarm active if volume flow go

outside limits as set in Fcts. 3.5.3 and 3.5.4)

* VOL.TOTAL (Alarm active ...

Solute flow Concentration option Conc. by mass if installed. See separate Conc. by volume instruction manual

* I 1.SAT (Alarm active if value output on current output

exceeds the range as set in Fct. 3.3.3 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

* AN Y O/P .SAT ( Alarm active if value output on eith er

curren t or pulse output exceeds t he selected ran ges)

* SEVERE ERR. (Output active if a severe error is

detected) * ALL MSG. (Output active if any warnings occur) * DIRECTION (Output active for positive flows, inactive

for negative flows)

3.5.2 ACTIV.LEVEL Select the desired voltage level for the active state * ACTIVE.HIGH (24 V dc) * ACTIVE LOW (0 V dc)

3.5.3 MIN. LIMIT Minimum allowable value for functions TOTAL MASS, MASS FLOW, DENSITY, TEMPERATUR and VOLUME.FLOW Units: depend on function but will correspond to those set in Fcts. 3.2.1 to 3.2.5

or Not accessible for all other functions

3.5.4 MAX. LIMIT. Maximum allowable value for functions MASS TOTAL, MASS FLOW, DENSITY, TEMPERATUR and VOLUME.FLOW Units: depend on function but will correspond to those set in Fcts. 3.2.1 and 3.2.5

or Not accessible for all other functions

Fct. No. Text Description and settings

3.6.0 CTRL.INP.E Submenu 3. 6.0 C ontr ol input

3.6.1 FUNCTIO N 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)

* CLEAR. MSG. (Status warnings cleared on the

transition from inactive to active on the control input)

3.6.2 ACTIV.LEVEL Set the desired voltage level for the input to be active * ACTIVE LOW (0 to 2 V) * ACTIVE.HIGH (4 to 24 V)

3.7.0 SYS.CTRL S Submenu 3.7.0 System control

3.7.1 FUNCTIO N S Function for system control * OFF (System control inactive) * FLOW = OFF (Mass flow readings forced to zero,

total iser frozen)

* 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 outputs to their OFF states)

3.7.2 REFERENCE Condition for triggering the above function * DENSITY (Function is triggered if density goes outside

Max or Min limits as set in Fcts 3.7.3 and 3.7.4)

* TEMPERATUR (Function is triggered if temperature

goes outside Max or Min limits as set in Fct 3.7.3 and

3.7.4) Function not available with Custody Transfer Protection.

3.7.3 MIN. LIMIT. Minimum allowable value of temperature or density

selected in Fct. 3.7.2

Units: depend on function but will correspond to those set in Fct. 3.2.1 and 3.2.5 Function not available with Custody Transfer Protection.

3.7.4 MAX. LIMIT. Maximum allowab le value of temperatur e or density

selected in Fct. 3.7.2

Units: depend on function but will correspond to those set in Fct. 3.2.1 and 3.2.5 Function not available with Custody Transfer Protection.

Fct. No. Text Description and settings

3.8.0 USER DATA Submen u 3.8.0 User dat a

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 → key and 9-keystroke code see

Fct 3.8.3)

3.8.3 CODE 1 Set Code 1 (Fct. 3.8.2 must be set to YES otherwise this

function is not available) * Factory setting: → → → ↵ ↵ ↵ ↑ ↑ ↑ * If a different code is required:

press any 9-keystroke combination and then press the

same key combination again. Each keystroke is

acknowledged by "*". CODE WRONG (incorrect entry)

appears if 1st and 2nd entries are not the same. Press

↵ then → keys and repeat the procedure.

3.8.4 LOCATION Tag name setting (measuring point number) Required only for flow meters using the MIC 500 Hand Held Communicator (HHC), connected to current output).. Factory setting: ”MFC 085” Characters assignable to each place: A...Z / 0...9 / + / - / * / = / // ( > = blank character)

3.8.5 ENABL. RESET Allow total iser rese t from the

RESET/ACKNOWLEDGE

menu or with Control.Input E

Select : NO/YES

3.8.6 CSTDY CODE 3 Custody transfer required? The function is protected by the CODE E password. After pressing the → key enter a 9-keystroke password. If in- correct, 9 characters are displayed which can be decoded in the factory, otherwise select: * NO (No protection) * YES (Custody Transfer Protection requir ed)

3.8.7 CODE 3 CodE E setting (9 characters). (If custody transfer is active then this function is unavailable) * Factory setting: ↵ → ↑ ↵ ↑ → ↵ → ↑ * If a different code is required, press any 9-keystroke

combination and then pre ss the same key combination

again. Each keystroke is acknowledged by "*". CODE WRONG appears if 1st and 2nd entries are not the same. Press ↵ then → keys and repeat the procedure.

3.8.8 PARAM.CODE 4 Extra code ↵ ↑ to allow subsequent access to Menus: Fct . 3.1.5

Fct. 3.1.6 Fct. 3.9.3 Fct. 3.9.4

Fct. No. Text Description and settings

3.9.0 TUBE PARAMS Submenu 3.9.0 primary head specific parameters Pas sword pro tected, s ee Fct . 3.8. 8

3.9.1 CF1 Density coefficient 1 Input the value stamped on the primary head’s data plate or perform on site calibration as described in Sect. 5.12.

3.9.2 CF2 Density coefficient 2 Input the value stamped on the primary head’s data plate or perform on site calibration as described in Sect. 5.12.

3.9.3 CF3 * Reference strain Displays the value stamped on the primary head’s data plate.

3.9.4 CF4 * Reference temperature Displays the value stamped on the primary head’s data plate.

3.9.5 CF5 *Primary head constant Displays the value stamped on the primary head’s data plate.

3.9.6 DSS CF6 Density strain slope Displa ys the valu e whi ch is menti oned on the c al. Sheet

3.9.7 DTS CF 7 Density temperature sl ope Displa ys the valu e whi ch is menti oned on the c al. Sheet

3.9.8 FSS CF8 Slope strain Displa ys the valu e whi ch is menti oned on the c al. Sheet

3.9.9 FTS CF9 Slope temperature Displa ys the valu e whi ch is menti oned on the c al. Sheet

3.9.10 D.REF.HIGH Density adjustment, High Point

3.9.11 D.REF.LOW Density adjustment, Low Point

3.10.0 CONC.MEAS Concentration measurement option when installed

3.10.1 SOLUTE R20 See separate Concentration instruction manual

3.10.2 SOLUTE K1 See separate Concentration instruction manual

3.10.3 SOLUTE K2 See separate Concentration instruction manual

3.10.4 LIQUID See separate Concentration instruction manual

3.10.5 LIQUIDR20 See separate Concentration instruction manual

3.10.6 LIQUID K1 See separate Concentration instruction manual

3.10.7 LIQUID K2 See separate Concentration instruction manual

3.11.0 SERIAL I/O RS485 or Modbus option, if installed

3.11.1 PROTOCOL See separate RS485 or Modbus instruction manual

3.11.2 ADDRESS See separate RS485 or Modbus instruction manual

3.11.3 BAUDRATE As per 3.11.1

* Only accessible if allowed through password in Fct. 3.8.8.

Fct. No. Text Description and settings

4.0 PARAM.ERROR Main Men u 4.0 Parameter error

4.1 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. 3 .3.4

4.3.0 ZERO Zero calibration incorrect.

The measured zero offset must be less than ±10 % of the primary head’s full scale flow rating.

4.3.1 ZERO SET Zero calibration see Fct. 3.1.7

4.3.2 PRIMRY.TYPE Type of primary head see Fct. 3.1.5

4.4 Not Used

4.5 Not Used

4.6.0 PULS.OUTP. P Range setting incorrect LOW SCALE ≥ FULL SCALE

4.6.1 LOW SCALE Low scale range for pulse output see Fct. 3.4.3

4.6.2 FULL SCALE Full scale range for pulse output see Fct. 3.4.4

4.7.0 PROC. ALARM Minimum and maximum limits incorrec t MIN.LI MIT > 96 % of MAX.LIMI T

4.7.1 MIN.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 incorrec t MIN.LI MIT > 96 % of MAX.LIMI T

4.8.1 MIN. LIMIT Minimum limit for condition checking see Fct . 3.7.3

4.8.2 MAX. LIMIT Maximum limit for condition checking see Fct . 3.7.4

4.5 Reset / Quit Menu - Totalizer reset and status indication acknowledgement

Totalizer reset Button Display Description

10.36

Measurement mode

↵ CodE 2

Enter access Code 2 for reset/quit menu: ↑ →

––

↑ → RESET.TOTAL Totalizer reset menu

Only appears if ”yes” programmed in Fct. 3.8.5. Reset enable No or Yes. If ”no” is programmed ”status light” only appears. See next section.

→ RESET.YES If the reset function is enabled RESET YES will be

shown, press ↵ to execute th e func tio n. To c ancel the r eset operation pres s ↑ to get RESET NO and then press ↵ If the res et function is dis abled by menus Fct. 3. 8.5 or

3.8.6 then BLOCKED is displayed. Press ↵ to continue

↵↵ 0.00

Assuming RESET YES was selected the totalisers will now be cleared.

View status message(s) and quit

Button Display Description

0.36 kg/min ∇

↵ CodeE 2

Measurement mode The p resen ce of the ∇ marker above Status on the

display indicates the presence of warning messages in the status list.

Enter access code for reset/quit menu: ↑ →

– – ∇

↑→ RESET.TOTAL

Totalizer reset menu.

∇

↑ STATUS.LIST

View/Quit Status message menu

∇

→ ≡ 1 Err ≡

MASS FLOW ∇

This display shows that there is just 1 warning in the list, in this case 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 YES ∇

At the end of the message list the QUIT YES prompt is shown. Selecting YES will clear if possible messages in the list. To c ancel the op eration press ↑ to get QUIT NO and then press ↵

↵ STATUS.LIST Assuming the conditions that caused the message have

passed (i.e. mass flow is back within the meter’s range) then th e Stat us marker , ∇ will disappear.

↵ 0.36

kg/min

Assuming RESET YES was selected, the totalisers will now be cleared.

4.6 Status messages

ERROR MESSAGES

SAMP LING Sever e P LL 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 O ne sensor signal much larger than the other EEPROM FATAL Unable to save data in EEPROM. Hardware fault SYSTEM FATAL I n dic ates soft ware error, will alway s occur with

WATCHDOG Severe Reset due to SYSTEM error or temporary power supply

NVRA M Severe NVRAM ch eck sum error, previous da ta lost DC A Severe max. DC voltage part of sensor A is larger than 20% of ADC DC B Severe max. DC voltage part of sensor B is larger than 20% of ADC NVRAM FULL Li ght NVRAM has exceeded its specified number of write

MASS FLOW Light Mass flow rate > 2 × nominal flow * ZERO ERROR Light Mass flow rate at zero adjust is larger than > 20% of

TEMPERATUR Light Temperature > outside operating range STRAIN Light St r ain out of operating range I.SAT Output Current output saturated ** FREQ.SAT Output Frequency output saturated ** ALARM.OUT. A Outp ut P roc ess alarm l imit chec k exceeded ** ROM DEF Light EEPROM check sum error, defaults loaded from ROM TOTAL O/F Light Cust ody transfer only. Mass total has overflowed the

TEMP.CUST Light Custody transfer only. Operating temperature has drifted

POWER.FAIL Light Custody transfer only. There has been an interruption of

TYPE COMMENT

WATCHDOG

drop-off

cycles

nominal (100%) flow rate *

display, i.e. it has gone from 99999999 → 00000000

by more than ±30°C from the zer o calibration temperature

power to the converter.

* Actual mass flow rate is too big or manual zero offset PUTIN.VAL in Fct. 1.1.1 was

programmed incorrectly .

** Change output range to avoid saturation.

4.7 Menu variations for systems with other output options

Fct. No OPTION 1 OPTION 2 OPTION 4 OPTION 5 OPTION 6 OPTION C OPTION D OPTION E OPTION F

Fct. 1.3 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. 1.4 PULS.OUT.P BLOCKED BLOCKED BLOCKED PULS.OUT.P PULS.OUT.P PULS.OUT.P BLOCKED BLOCKED Fct. 1.5 STATUS.OUT.A STATUS.OUT.A BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED STATUS.OUT.A

Fct. 2.2 TEST I TEST I* TE ST I TE ST I TES T I TEST I* TE ST I* TEST I* TEST I* Fct. 2.3 TEST P BLOCKED BLOCKED BLOCKED TEST P TEST P TEST P BLOCKED BLOCKED Fct. 2.4 TEST A TEST A BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED TEST A Fct. 2.5 TEST.INP.E TEST.INP.E BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED TEST.INP.E BLOCKED

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 BLOCKED PULS.OUTP.P PULS.OUTP.P PULS.OUTP.P BLOCKED BLOCKED Fct. 3.5 STATUS.OUT.A STATUS.OUT.A BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED BLOCKED STATUS.OUT.A Fct. 3.6 CTRL.INP.E CTRL.INP.E BLOCKED BLOCKED BLOCKED CRTL.INP.E BLOCKED CTRL.INP.E BLOCKED

Fct. 4.2 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. 4.6 PULS.OUTP.P N/A N/A N/A PULS.OUTP.P PULS.OUTP.P PULS.OUTP.P N/A N/A Fct. 4.7 STATUS.OUT.A STATUS.OUT.A N/A N/A N/A N/A N/A N/A STATUS.OUT.A

∗

These menus access two or more current outputs. Press → and a flashing ”1” appears. i.e. Fct . 1.3.0

CUR.OUTP.I

USE THE ↑ TO SELECT THE REQUIRED OUTPUT NUMBER THEN PRESS ↵ TO SELECT.

5. Functions

5 Description of Functions

5.1 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 or changing the calibration factor), it is advisable to re-adjust the zero-point.

To a chi eve a suc ces sf ul zer o c ali bra ti on th e pr im ary h ead s houl d be c ompl et ely f ull of pr oc ess fluid at normal operating pressures and temperatures. Ideally there should be no air inclusions in the fluid, particularly for horizontal installations, so it is recommended that the primary head be flushed with the process fluid at a high flow rate (>50%), for 2 minutes, prior to starting the adjustment. 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 display keys. If an automatic adjustment is to be made then the operator should trigger this, with the front cover still in place, using the bar magnet provided to operate the magnetic sensors on the display. This is to ensure that the zero adjustment is carried out with the mechanical installation exactly the same as for normal operation.

Begin from the measuring mode.

Key Di splay

line 1 line 2

→ 9-key stroke entry code

(if enabled) Fct. (1).0 OPERATOR

↑ Fct. (2).0 TEST ↑ Fct. (3).0 INSTALL → Fct. 3.( 1) BASE DATA → F ct. 3.1.(1) Z ERO SET → (MEAS.VALUE)

NOTE: The brackets around parts of the above text indicates the cursor position, these characters will be flashing on the display. Flashing values can now be changed with the ↑ key. Pressing the → key moves the cursor to the next ”field” which then starts to flash.

The operator can now choose either A) Automatic (recommended) or B) manual adjustment. A) Automatic adjustment :

key Display

line 1 line 2

↵ CALIB. ( NO) ↑ CALI B. ( YES) ↵ X.X PERCENT* ↵ ACCEPT (YES)

4x↵ Return to measuring mode

* Display of actual flow rate % of maximum value, for a period of 20 seconds.

B) Manual adjustment :

Key Display

line 1 line 2

↑ SET.VALUE ↵ (0).000 kg/min

Input zero value in the sequ ence : dimension, sign , numeric value. (see section 5.2).

↵

4x↵ Return to measuring mode.

In al l the fol lowin g exampl es, a shor t notat ion i s used f or the setti ng of th e sign al conv erter. Pushing a key several times is indicated by the number of times without the intermediate display messages. Only the final display output is listed. If programming is possible in the different menus 1.0 or 3.0 the only change is in the function number (e.g. for zero adjustment 1.1.1. instead of 3.1.1.), th e inp uts fo r the programmi ng of the fu ncti ons ar e the s ame.

Under certain conditions, it may not be possible to adjust the zero point, for instance when : – The medium is i n motion, because t he shut-of f val ves et c. are not functioning properly.

– 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 clamping.

In such cases the zero point adjustm ent will not be accept ed. If the zero adj ustm ent was started by the binary input, the converter will show the message :

ZERO.ERROR

This will appear in th e display fo r a sho rt tim e after the a djustm ent. The convert er also r eports the ZERO.ERROR in the status list.

If t he zero c alib ratio n was st arted f rom the m enus t hen Par amet er Erro r 4.3 will be di splay ed when the operator tries to accept the new values.

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

might be advisable to fill the primary head with the carrier medium only.

– Other two-phase media . If it is not possible to separate the solid or gaseous components, the operator can fill the

measuring system with a substitute liquid (e.g. with water).

5.2 Low Flow Cutoff (Fct. 1.1.2 an d 3.1.2)

If the FLOW MODE (Fct. 3.1.8) is set to FLOW +/- then at zero flow small signal fluctuations will average out to nothing and the totaliser will remain fixed. However, if "one-way flow" is selected, this avera ging process will not work and the totaliser readi ng will increase sl owly with time. To prevent this the Low Flow Cutoff should be set.

The Low Flow Cutoff is entered as a percentage of the rated flow of the primary head. The cutoff may be set in the range of 0.0 to 10.0% in steps of 0.1%.

Thus, for a 10G instrument with a low flow cutoff of 0.2%, any flows less than 0.02 kg/min are taken as 0 kg/min.

To set the Low Flow Cutoff to 1% :

Key. Display

line 1 line 2

→→→ Fct. 1.1.(1) ZERO SET ↑ Fct. 1.1.(2) L .F.CUTO FF → (0)0.0 PERCENT →↑ (1).0 PERCENT ↵ Fc t. 1. 1.2 L.F. C UTOFF 4x↵

5.3 Time constant

Measurements taken from the primary head require filtering in order to give stable readings in the presence of fluctuating flows. The degree of filtering also affects how quickly the reading responds to rapid changes in flow.

SHORT TIME CONSTANT:

FAST RESPONSE FLUCTUATING READING

LONG TIME CONSTANT:

SLOW RESPONSE STABLE READING

The figure below shows the typical response of the system for varying Time Constants and a sharp change in flow.

To set the Time Constant : Begin from measuring mode.

Key Display

line 1 line 2

→→→ Fct . 1.1.(1) ZERO SET ↑↑ Fct. 1. 1.(3) TIME. CONST. → (0)4.0 TIME C. S.

↵ Fct. 1.1.(3) TIME .CON ST

4x↵

Edit the time constant in seconds in range 0.5 to 20.

This filtering only applies to mass and volume flow readings and any outputs that use them. The mass totaliser is independent of the time constant.

The standard range for the time constan t is 0.5 to 20 seconds. For fas te r response times, a range of 0.2 to 20 seconds is available as a factory set option.

Time constant characteristic

5.4 Programming the display for measurement values (Fct. 1.2. and 3.2.)

The following measurement functions can be displayed :

Fct. 1.2.1 CYCL .DISP Fct. 1.2.2 STATUS MSG. Fct. 1.2.3 MASS FLOW Fct. 1.2.4 MASS TOTAL Fct. 1.2.5 DENSITY Fct. 1.2.6 TEMPERAT. Fct. 1.2.7 VOLUME.FLOW Fct. 1.2.8 VOL.TOT AL

For systems with concentration software their specific extra displays will be added to the above list from Fct. 1.2.9 onwards. The displayed measurement function can be changed in the measurement mode by pressing ↑ key. The set ting of the di splay o utput is demo nstrat ed for t he exam ple of di splay ing th e mass fl ow rate in kg/h. Starting from the display of measurement values, the following programming steps are necessary.

Begin from measuring mode.

Key Display

line 1 line2

→ Fct. (1).0 OPERATOR 2x↑ Fct. (3).0. INSTALL

→ Fct. 3.(1).0. BASE DATA ↑ Fct. 3.(2).0. DISPLAY →↑↑ Fct. 3.2.( 3). MASS FLOW

After pressing → key the display shows :

0000.0000 (kg)/min

This display means that mass flow will be displayed in units of kg/min to an accuracy of 4 decimal places. The brackets around 'kg' indicate the cursor position, these characters 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 using the ↑ key. After pressing the → key again, the curs or moves to the output format of t he numeri c value which can then be edi ted.

To change the display to kg/h with 5 decimal places, follow the following procedure.

Key Display

line 1 line 2

→ 0000.0000 kg/(min) ↑ 0000.0000 kg/(h) → 0000(.)0000 kg/h ↑ 00000(.)000 kg/h ↑ 000000(.)00 kg/h ↑ 0000000(.)0 kg/h ↑ 00000000(.) kg/h ↑ 0(.)0000000 kg/h ↑ 00(.)000000 kg/h ↑ 000(.)00000 kg/h ↵ Fct . 3.2.(3).

0000.0000 (kg)/min

MASS FLOW

The setting of the display for TOTAL MASS or DENSITY is done the same way. Temperat ure is displayed with a fixed posi tion of one decimal plac e. However , the user can

choose between °C and °F. Begin from measuring mode

Key Display

line 1 line 2

→ Fct. (1).0 OPERATOR →↑ Fct. 1.(2).0. DISPLAY 5x↑ Fct. 1.2.(6). TEMPERATUR → (°C) ↑ (°F) ↵ Fct. 1.2.(6). TEMPERATUR

Volume flow is an optional display in the measurement mode. To turn on this display with units dm3/hr :

Key Display

line 1 line 2

↑ Fct. 1. 2.(7) VO L.FLOW. → (OFF) ↑ 00000.000 (cm3)/S ↑ 00000.000 (dm3)/S →↑↑ 00000.000 dm3/(hr) → 00000(.)000 dm3/ hr ↑↑ 0000000(.)0 dm3/hr ↵ Fct. 1.2.(7) VOL.FLOW

For a lis t of ava ila ble units for eac h display r efer to Sec t ion 5, Tech nical data. If a cyclic display of all measurement values is desired the following inputs have to be added to

the prev ious step s :

Key Display

line 1 line 2

↵→ Fct. 1.2.(1) . CYCL. DI SP. → (NO) ↑ (YES) ↵ Fct. 1.2.(1) . CYCL. DIS P.

4x↵

With the cyclic display enabled, the converter will switch displays in the measuring mode every 3 to 4 seconds as if the operator had pressed the ↑ key.

5.5 Programming Numeric Data

Various functions on the MFC 085 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:

Return to measuring mode

Key Display

line 1 line 2

→ Fct. (1).0 OPERATOR →↑↑ Fct. 1.(3).0 CUR.OUTP. I →↑ Fct. 1.3.(2) MIN. FLOW

↑ Fct. 1.3.(3) M AX. FLOW → (0)

↑ (1)5.0000 kg/min → 1(5).0000 kg/min 5x↑ 1(0).0000 kg/min → 10(.)

→↑ 10.(1)000 kg/min ↵ Fct. 1.3.(3) MAX FL OW

4x↵

(assume function is set to MASS FLOW)

5.0000 kg/min Current setting of MAX.FLOW Units and accuracy are as set by the format Fct. 1.2.1

0000 kg/min Decimal point may now be moved one digit to the right for each press of the ↑ key

∗ The flashing '0' to the left of the number to be edited allows extra digits to be added, as in

this example. If no extra digits are required, pressing the → key will cause this leadi ng zero to be blanked.

(0)5.0000 kg/min

→ (5).0000

∗∗ Some values do not allow the decimal point to be moved.

NOTE: Som e num eric al val ues hav e fixed permi ssi bl e lim it s. Fo r exam pl e, Menu 3.1 .2. , L. F. CUT OF F 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 :

Key Display

line 1 line 2

↵ 10 .0 MAX.VALUE

15.0 PERCENT

Press ↵ again to correct the number:

↵ (0)10.0 PERCENT

Re-edit the numb er or press ↵ again to accept this value.

5.6 Setting the current output (Fct. 1.3. and 3.3)

The current output can be programmed to the following measurement values :

– Mass Flow – Density – Temperature – Volume Flow Rate – Flow Direction

For the current output of the MFC 085, five ranges are available :

0 to 20 mA 4 to 20 mA 0 to 20 mA warning state: 22 mA 4 to 20 mA warning state: 2 mA

4 to 20 mA warning state; 3.5 mA All output ranges will over range to 20.5 mA. The 4 - 20 mA ranges will under range to 3.8 mA. All functi ons except flow di rectio n have a mi nimum an d a maxi mum val ue. When t he curr ent output is set to one of these quantities, then the output range (4 to 20 or 0 to 20 mA) will correspond to the appropriate minimum and maximum (see figure on next page).

For example, t o use t he cur rent o utpu t for density wit h the following parameters :

MIN DENSITY = 0.5g/cm

MAX DENSITY = 2.0g/cm

RANGE 4 to 20 mA Density Current

0.5 g/cm

1.0 g/cm

2.0 g/cm

3 3 3

4 mA (minimum) 10 mA 20 mA (maximum)

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. When the condition clears, the current output returns to normal automatically.

To program the density example above: Begin from measuring mode

Key Di splay

line 1 line 2

→ Fct. (1).0 OPERATOR 2x↑ Fct. (3).0 INSTALL

→↑↑ Fct. 3.(3).0. CUR.O UTP.I → Fct. 3.3.(1). FUNCTION I → (TEMPERATUR) ↑ (VOLUME.FLOW)

:(OFF) : (MASS FLOW)

↑ (DENSITY) ↵ Fct. 3.3.(1). FUNCTI ON 1 ↑ Fct. 3.3.(2). MIN.DENSI T Y → Input of min. value. ↵ Fct. 3.3.(2). MIN.DENSITY → F ct. 3.3.(3). MAX.DENS ITY → Input of max. value. ↵ Fct. 3.3.(3) . MAX.DEN SITY ↑ Fct. 3.3.(4). RANGE I → (0-20/22mA) ↑ (2/4-20mA) ↑ (3.5/4-20mA) ↑ (0-20mA) ↑ (4-20mA) ↵ Fct. 3.3.(4). RANGE I

4x↵

If during operation the density measured falls outside the set maximum and minimum limits, the output is said to be saturated. This may cause problems with external instrumentation. Saturatio n may be i ndic ated to the customer using eith er t he proc ess alarm (sect ion 5.7) or the status warnings (section 5.12.).

If t he ou tp ut f unc tio n is set t o OF F or t o DI REC TIO N t hen su b- menu s Fct . 3. 3. 3 an d F ct. 3. 3. 4 are not a vail able.

Current output characteristics

5.7 Setting the frequency/pulse output (Fct. 3.4. and 1.4)

The freq uency/p ulse o utput all ows the transf er of on e of the following m easur ement valu es :

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+

For systems with 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 Total Pulse

The exact programming of this output depends on the measurement value selected.

Pulse Outputs:

When the pulse output (Fct. 1.4.1 or 3.4.1) is set to either MASS TOTAL, VOL.TOTAL OR SOL.TOTAL (Concentration systems only) then the following sub menus are available:

Fct. 3.4.1 FUNCTION P Fct. 3.4.2 PULSE/MASS ( or PULSE/VOL. ) Fct. 3.4.3 P ULSE . WID TH

For thes e fun ctions the output sen ds out a series of p ulses where each pulse represen ts 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

Key Display

line 1 line 2

→↑↑ Fct. (3).0. INSTALL. →↑↑↑ Fct. 3.(4).0. PULS.OUTP. P → Fct. 3.4.( 1). FUNCTION P → (OFF) ↑ (MASS FLOW)

: (TOTAL MASS) : (DENSITY) : (TEMPERAT) :(VOLUME.FLOW) : (VOL. TOTAL)

↑ (DIRECTION) ↵ Fct. 3.4.(1). FUNCTION P ↑ Fct. 3.4.(2). PULSE/MASS → 1.000 1 P. = (KG)

Current setting 1kg per pulse

4x↑ 1. 000 1 P. = (g)

→ (0)1.000 1 P. = g ↑↑ ( 2) 1.000 1 P. = g →9x↑ 2( 0).000 1 P. = g ↵ Fct. 3.4.(2). PULSE/MASS

Menu Fct . 3.4.3 can now be u sed to set the mini mum puls e width, τ , in the range 0.4 to 500 ms.

In this way the operator can be sure that the pulses produced by the impulse out put will never be shorter than the specified width.

Wh en setti ng the pul se width , τ, and the mass (or volume) per pulse, Q, the operator

Flow

should take into account the maxi mum flow rate, such that:

Flow

max

2τ

where:

Flow Q

is in units g/s (or cm3/s)

max

is in units of g (or cm3)

τ is in units of seconds

Flow

exceeds the above, limit saturation will occur and pulses will be lost and any external

max

counter connected will under-read. It is possible to generate warnings of saturation in one of two ways:

, he expects through the meter,

max

I. Set the Alar m out put, Fct . 3.5. 1 to ei ther P1 SAT or ANY OP.SAT. If the pulse output

saturates now the Alarm outp ut will si g nal a warnin g.

II. Set the STATUS MSG. function Fct. 1.2.2 to either OUTPUT or ALL MSGS. If the p ulse

output becomes saturated now the Status arrow on the display will be lit and the display will start to fla s h.

To program the pulse width to 10 ms

Fct. 3.4.(2) PULSE/ MASS

↑ → ↑ → →

Fct. 3.4.(3) PULSE.W IDTH (0)0.4 mSec (1)0.4 mSec

10.(4) mSec

6 × ↑ 10.0 mSec

↵

Fct. 3.4.(3) PULSE.W IDTH

4 × ↵

Having progr ammed this, one pulse will b e sent from the output for every 2 0g 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 suitable low flow cutoff.

Frequency:

For these values the frequency output sends out a continuous square wave with a frequency representing the corresponding measured value. As with the current output, the frequency output is scaled to match the maximum and minimum settings for these values. The range of the frequency output may also be set by Fct. 1.4.2. or Fct. 3.4.2..

Exampl e 1 : Measured value = m ass flow Max flow = 5 kg/min Min flow = 0 Max frequency = 500 Hz

Flow Frequency 0 kg/min 1 kg/min 5 kg/min

6.5 kg/min >6.5 kg/min

0 Hz 100 Hz 500 Hz 650 Hz (1.3xMax Flow) 650 Hz

Exampl e 2 : Measured value = t emperature Max temperature = 75°C Min temperature = -25°C Max frequency = 1000 Hz

Temperature Frequency < - 25°C 0°C 20°C 75°C > 95°C

To s et up example 1, proceed as f ollows : Begin from measuring mode.

Key Displ a y

line line 2

→↑↑ Fct. (3).0. INSTALL. →↑↑↑ Fct. 3.(4).0. PULS.OUTP. P → Fct. 3.4.(1). FUNCTI ON P → (TOTAL MASS) ↑ (MASS FLOW) ↵ Fct. 3.4.(1). FUNCTION P ↑ Fct. 3.4.(2). PULSE/TIME → (0)1000 MAX Hz

Current max. frequency 1000 Hz.

→9x↑ (0)000 MAX Hz → 0(0)00 MAX Hz 5x↑ 0(5)00 MAX Hz ↵ Fct. 3.4.(2). PULSE/TI ME ↑ Fct. 3.4.(3). MIN. FLOW → Input min. flow of 0 kg/min ↵↑ Fct. 3.4. (4). MAX. FLOW → Input max. flow of 5 kg/min ↵ Fct. 3. 4.(4). MA X. FLOW

4x↵

0 Hz 250 Hz 450 Hz 1000 Hz 1300 Hz

The frequency output will allow f lows to b e registered up t o 1. 3 times the maximum value. (Note : for mass flow and volume flow, all flows are assumed positive). The absolute maximum output frequency is 1300 Hz so the Max. Value allowed for Fct. 3.4.2. is 1000 Hz allowing for the 1.3 x over-range.

NOTE: The frequency output has a duty cycle of 50% for a frequency range > 1Hz. For a frequency range < 1Hz, the duty cycle is not 50%.

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. + V neg. 0 Volts

Frequency output characteristic of example 1 and 2

5.8 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 pr ocess states , s ee Table below:

For all functions it is possible to define whether the output is to be active high, 24 Volts or active low, 0 Volts (Fct. 3.5.2). The first five functions check measured values against user-defined lim its. W hile the value i s wit hin t hese l imit s the Proces s Ala rm ou tput i s in activ e. If t he v alue exceeds the limits then the output becomes active. To prevent multiple switching of the output when the measured value is just on the limits, hysteresis is built in. Refer to figure below; as mass flow increases 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 functions

Function Inactive Active Mass tota l

Mass flow Density Temperature Volume flow Concentration by mass * Concentration by volume * Solute Mass Flow Rate* Current outputs I 1,2 3 Frequency output Any Output All status messages Severe errors Flow direction

•

If concentr ation option inst al led.

Total in range Mass flow in range Density in range Temp. in range Volume flow in range Concentration in range Concentration in range Solu te flow rate in range Specified current output OK Frequency output OK All outputs OK No converter errors No serious converter faults neg. flow (-ve)

Total out of range Mass flow out of range Density out of range Temperature out of rang e Volume fl ow out of range Concentration out of range Concentration out of range Solute flow rate out of range Current output saturated Output saturated At least one output saturated At least one error detected Major converter fault;measurement stops pos. flow (+ve)

ACTIVE

Hysteresis, H = 2% Max Limit

INACTIV E

Min. Limit

Max. Lim i t

FLOW

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

Key Display

line 1 line 2

→↑↑ Fct. (3).0. INSTALL →4x↑ Fc t. 3.( 5).0. ALARM.OUT.A → Fct. 3.5.( 1). FUNCTION A → (OFF) ↑ (MASS FLOW)

: (MASS TOTAL) : (DENSITY)

↑ (TEMPERATURE) ↵ Fct. 3.5.(1). FUNCTION A ↑ Fct. 3.5.( 2). ACTIV.LEVEL → (ACTIVE.HIGH) ↑ (ACTIVE LOW) ↵ Fct. 3.5.(2). ACTIV. LEVEL ↑ Fct. 3.5.(3). MIN. LIMIT → Input minimum temperature ↵ Fct. 3.5.(3). MIN. LIMIT ↑ Fct. 3.5.(4). MAX. LIM IT → Input max imum temperature ↵ Fct. 3.5.(4). MAX. LIMI T

4x↵

Return to measuring mode. NOTE: For functions other than range checking Fct. 3.5.3. and 3.5.4. are not accessible.

5.9 Setting the control input (Binary)

The MFC 085 has an input connection which allows certain meter functions to be controlled rem otely. Th ese 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. The other functions are triggered on the transition of the input from inactive to active. The active level of the input m ay be defined using Fct. 3.6.2. as active high (4 - 24 volts) or active low (0 - 2 volts).

NOTE: Internal resistors attached to the control input pull it low, 0V, when the input is not driven. (see figure below)

Example: Using a TTL signal to reset the totaliser when the signal goes from high (+5V) to low (0V). Begin from measuring mode

Key Display

line 1 line 2

→↑↑ Fct. (3).0 INSTALL →5x↑ Fct. 3.6.0 CT RL. INP.E → Fct. 3.6.(1) FUNCTI ON E → (OFF) ↑ (STANDBY)

: (ZERO SET)

↑ (RESET MASS) ↵ Fct. 3.6.(1) FUNCTION E ↑ Fct. 3.6.( 2) ACTIV.LEVEL → (ACTIVE.HIGH) ↑ (ACTIVE. LOW) ↵ Fct. 3.6.(2) ACTIV. LEVEL

4x↵

Driving the control input

5.10 Setting the system control

Some applications for the MFM 4085 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. 3.7.2.) are : Density out of range

Temperature out of range The ranges for these conditions are set by Fct. 3.7.3. and 3.7.4. (These range checks are

sub ject t o hys teresis in the same way as t he process alarm , see Sect. 5.7). When such a condition is met, the converter takes one of the following actions :

1. Fl ow reading forced to zero, totaliser stopped, any output registering flow will go to zero.

2. Flow reading forced to zero as above, but totaliser is cleared to zero when measurement

restarts.

3. Disable outputs. All outputs, current, frequency and alarm are forced to their zero/inactive

stat e.

Example: A process has to be steam cleaned regularly. The user has the pulse output set to total mass, but he does not want pulses sent to his instrumentation during cleaning. However, he still requires a temperature reading from the current output. The nominal density of his process fluid is 1.2g/cm3.

Begin from measuring mode

Key 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). FUNCTI ON S ↑ Fct. 3.7.(2). REFERENCE → (TEMPERATUR) ↑ (DENSITY) ↵ Fct. 3.7.(2). REFERENCE ↑ Fct. 3.7.(3). MIN. LIMIT → Input minimum density of 0.5g/cm3 ↵ Fct. 3.7.(3). MIN. LIMIT ↑ Fct. 3.7.(4). MAX. LIMIT → Input maximum density of 5.0g/cm3.

NOTE : The max. value in this case will set a

↵ Fct. 3.7.(4) . MAX. LIM IT 4x↵

This value is set high as only low fluid density are of interest in this case.

hyster esis of 0.1g/cm3

As the line is drained and prior to steam cleaning, density reading will fall below 0.5g/cm3. When this happens the converter will read zero flow and no more pulses will be sent from the pulse output. The current output registering temperature will function as normal. When the line is refilled an d densit y exceeds 0.6g/cm3, measurement will restart.

When this function becomes active then the standby indicator on the display becomes lit. All displays for mass flow, density, temperature etc. work as normal. However, if functions 1 or 2 above are selected then the mass flow (and hence volume flow) will be zero and will be displayed as shown below.

0.0000 STANDBY.

5.11 Standby function (Fc t . 1.1.4. and 3.1.4.)

The inst rum ent may b e switched to a 'ST ANDBY ' stat e. Once i n this st ate, all out puts go t o their off state and the mas s totaliser is frozen. The mai n dis play will have th e STANDBY indicator s et and will display either the frozen totaliser or just STANDBY.

Begin from measuring mode

Key Display

line 1 line 2

↑ 3.456 kg Fr ozen Totalizer ↑ STANDBY

STANDBY

Whilst in this state the measuring tube still vibrates and the measurements can come back on line in an ins t a nt.

There is an additional standby state, 'STOP', in this case the drive to the primary head is disabled and vibrations cease. However, when leaving STOP the converter has to return to STARTUP before measurements can resume.

The inst rum ent can be switched to STAN DBY either b y the keys on the display or by the cont rol input signal (see section 5.9). STOP can only be set by the keys.

To set STANDBY or STOP : Begin from measuring mode

Key Display

line 1 line 2

→ Fct. (1).0. OPERATOR →→ F ct. 1.1.(1). ZERO SET 3x↑ Fc t . 1.1.(4). STA NDBY → (MEASURE) ↑ (STANDBY) ↑ (STOP)

↵ Fct. 1.1.(4) STAND BY

Use the ↑ key to select the desired 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 from STOP to STANDBY, as the converter must first be switc hed to M EASUR E to restar t the primary head vibrations.

In addition to these 'standby' modes the SYSTEM CONTROL function provides a fully automated way of switching to simil ar modes using ei ther the densit y or tempera ture of the process fluid as a control (see section 5.10).

5.12 Density adjustment for maximum measuring accuracy

G-Series Coriolis Mass Flow meters are factory calibrated for density prior to shipment. This calibration is based on measurements made with air and water under reference conditions. The results of this calibration are stored in the calibration factors CF1 and CF2 in menus Fct.

3.9.1 and 3.9.2. However for applications that require maximum accuracy an on-site density calibration will be required. To calibrate density measurements two points are required. For convenience these are often taken to be: i) air (meter empty), and ii) water or the normal process fluid. However if the application only has a limited density range of interest then best results will be obtained if the calibration points are taken at each end of that range. Similarly if the application normally operates at a particular temperature then the calibrations should be done at that temperature.

Setting the Low Calibration Point

(It does not normally matter which order the calibration points are measured in but it is usually more convenient if the Low density point is done first particularly if air is used. However if one of the density points is to be water then this should be treated as the High point).

Ensure that the meter is properly installed and is operating correctly. If air is used the meter must be dry inside with no droplets of liquid. If necessary blow through with clean compres sed ai r to dry. If a f lui d i s used circulate th e f luid at a high flow rat e for a f ew minutes to ensure that no air bubbles remain inside the meter. Adjust flow rate to the typical rate for the application. (50% of rated flow is ideal). If operating at temperatures other than ambient maintain these conditions for about 20 minutes so that the meter can stabilise. (G+ meters 100G and bigger need only be left 5 minutes but 20 minutes is optimum). On the menus go to menu 3.9.11 D. REF. LOW and proceed as follows:

Key Line 1

→ ↵

↑

↵

↑ ↵ ↑→ ↑↑↑ →→ ↑x5 →↑↑

↵ ↵x4

Fct. 3.9.(11) D. REF. LOW

0.0000

0.0000 (0).0000 (5).0000 500(.)00

Fct. 3.9.(11) D. REF. LOW

Line 2 (MEAS. VALUE)

CALIB. (NO) CALIB.

(YES)

(AIR)

(OTHER) (g) / cm3 kg / (cm3) kg / (m3) kg / m3 kg / m3 kg / m3

Notes:

Use the ↑ key to select CALIB YES or press ↵ to abort Press ↵ to start the calibration. The meter wil l now log the current t emperat ure, frequency and strain values. If for some reason this is not possible BLOCKED will be displayed and the operation aborted. Use the ↑ key to select whether this calibration point was AIR, or OTHER fluid. If AI R is sel ected th en pres sing ↵ completes the operation.

Enter the fluids density and units in the normal way and then press ↵. The value entered here must be the density of the fluid at the opera t ing temp erature. I f the exact density of the product is not known at this time, enter an approximate value (taking a sample from the line if required), an exact value may be entered later.

Exit the menus and save the changes.

Setting the High Calibration Point

Ensure that the meter is properly installed and is operating correctly. Circulate the high density fluid at a high flow rate for a few minutes to ensure that no air bubbles remain inside the meter. Adjust flow rate to the typical rate for the application. (50% of rated flow is ideal). If operating at temperatures other than ambient maintain these conditions for about 20 minutes so that the meter can stabilise. (G+ meters 100G and bigger need only be left 5 minutes but 20 minutes is optimum). On the menus go to menu 3.9.10 D. REF. HIGH and repeat the procedure as for the LOW density point. (note WATER and not AIR will be the option for the density type in this case.)

Note : If on leaving functions 3.9.10 or 3.9.11 the CALIB. ERR message is displayed this means that the meter was unable to calculate realistic values for CF1 and CF2. Press ↵ to continue. This error may be caused by a number of factors. Please check the following: Check initial values of CF1 and CF2, these should be the same or similar to the values printed on the data plate. I f these are vastly dif ferent re-enter t he values from t he dat a plate and repea t the calibrations. Chec k CF3 and CF 4 are as pr inted on the da ta plate. Ensure that both calibration points were carried out with different density fluids and that the correct densities were entered on the display.

Reviewing the Calibration settings.

After successfully calibrating the density it is recommended that the new data is recorded on the table below. CF1 and CF2 can be found from menus Fct. 3.9.1 and 3.9.2.

Density Calibration Data

Serial Number

Date

Primary Type

Fct. 3.9.1 CF1 Fct. 3.9.2 CF2 Fct. 3.9.3 CF3 Fct. 3.9.4 CF4

Fct. 3.9.10 D. REF. HIGH Fct. 3.9.11 D. REF. LOW

Frequency Hz

Temperature Strain Density °C/°F

°C/°F

Ω Ω

CF1 to CF4 can be found from menus Fct. 3.9.1 to 3.9.4 To find the remaining data proceed as follows.

Key Line 1

Fct. 3.9.(10) D. REF. HIGH

→ ↑

210.1234

↵

22.1

↵

467.05

↵ ↵

1200.1

Fct. 3.9.(10) D. REF. HIGH

↵

Fct. 3.9.(11) D. REF. LOW Repeat for th e LOW cal ibration point.

↑

Line 2

Notes:

(MEAS. VALUE) (SET VALUE) HZ Record this frequency value. °C Reco rd this temperature va lue. STRAIN Record this strain value.

(WATER) (kg) / min

If WATER (or AIR for menu 3.9.6) was selected then thi s will b e displayed here. If a fluid other than air or water was selected then the density input by the customer will be displayed. If required these values can be edited here. Note if the value is edited CF1 and CF2 will be adjusted.

When reviewing the calibration data the frequency, temperature and strain values cannot normally be edited. If a replacement converter is being fitted then it may be necessary to copy the calibration points into the new set of electronics. (CF1 to CF5 must be copied in all cases). Frequency , temperature and strain data can be edited if the operator first enters the PARAM.C ODE.4 password in menu 3.3.8 (see section 5.14.4).

Density of water as a function of temperature

Temperature in

°C

°F

kg/m

Density in

lb/ft

Temperature in

°C

°F

kg/m

Density in

lb/ft

0.5 1

1.5 2

2.5 3

3.5 4

4.5 5

5.5 6

6.5 7

7.5 8

8.5 9

9.5 10

10.5 11

11.5 12

12.5 13

13.5 14

14.5 15

15.5 16

16.5 17

17.5 18

18.5 19

19.5 20

20.5 21

21.5 22

22.5 23

23.5 24

24.5

32.9

33.8

34.7

35.6

36.5

37.4

38.3

39.2

40.1 41

41.9

42.8

43.7

44.6

45.5

46.4

47.3

48.2

49.1 50

50.9

51.8

52.7

53.6

54.5

55.4

56.3

57.2

58.1 59

59.9

60.8

61.7

62.6

63.5

64.4

65.3

66.2

67.1 68

68.9

69.8

70.7

71.6

72.5

73.4

74.3

75.2

76.1

999.8396

999.8712

999.8986

999.9213

999.9399

999.9542

999.9642

999.9701

999.9720

999.9699

999.9638

999.9540

999.9402

999.9227

999.9016

999.8766

999.8482

999.8162

999.7808

999.7419

999.6997

999.6541

999.6051

999.5529

999.4975

999.4389

999.3772

999.3124

999.2446

999.1736

999.0998

999.0229

998.9432

998.8607

998.7752

998.6870

998.5960

998.5022

998.4058

998.3066

998.2048

998.1004

997.9934

997.8838

997.7716

997.6569

997.5398

997.4201

997.2981

997.1736

62.41999

62.42197

62.42367

62.42509

62.42625

62.42714

62.42777

62.42814

62.42825

62.42812

62.42774

62.42713

62.42627

62.42517

62.42386

62.42230

62.42053

62.4185

62.41632

62.41389

62.41125

62.40840

62.40535

62.40209

62.39863

62.39497

62.39112

62.38708

62.38284

62.37841

62.37380

62.36901

62.36403

62.35887

62.35354

62.34803

62.34235

62.33650

62.33047

62.32428

62.31793

62.31141

62.30473

62.29788

62.29088

62.28372

62.27641

62.26894

62.26132

62.25355

25.5 26

26.5 27

27.5 28

28.5 29

29.5 30

30.5 31

31.5 32

32.5 33

33.5 34

34.5 35

35.5 36

36.5 37

37.5 38

38.5 39

39.5 40

40.5 41

41.5 42

42.5 43

43.5 44

44.5 45

45.5 46

46.5 47

47.5 48

48.5 49

49.5

77.9

78.8

79.7

80.6

81.5

82.4

83.3

84.2

85.1 86

86.9

87.8

88.7

89.6

90.5

91.4

92.3

93.2

94.1 95

95.9

98.6

97.7

98.6

99.5

100.4 992.9789

101.3 992.7951

102.2 992.6096

103.1 992.4221 104

104.9 992.0418

105.8 991.8489

106.7 991.6543

107.6 991.4578

108.5 991.2597

109.4 991.0597

110.3 990.8581

111.2 990.6546

112.1 990.4494 113

113.9 990.0341

114.8 989.8239

115.7 989.6121

116.6 989.3986

117.5 989.1835

118.4 988.9668

119.3 988.7484

120.2 988.5285

121.1 988.3069

997.0468

996.9176

996.7861

996.6521

996.5159

996.3774

996.2368

996.0939

995.9487

995.8013

995.6518

995.5001

995.3462

995.1903

995.0322

994.8721

994.7100

994.5458

994.3796

994.2113

994.0411

993.8689

993.6948

993.5187

993.3406

993.1606

992.2329

990.2427

62.24563

62.23757

62.22936

62.22099

62.21249

62.20384

62.19507

62.18614

62.17708

62.16788

62.15855

62.14907

62.13947

62.12973

62.11986

62.10987

62.09975

62.08950

62.07912

62.06861

62.05799

62.04724

62.03637

62.02537

62.01426

62.00302

61.99168

61.98020

61.96862

61.95692

61.94510

61.93317

61.92113

61.90898

61.89672

61.88434

61.87186

61.85927

61.84657

61.83376

61.82085

61.80783

61.79471

61.78149

61.76816

61.75473

61.74120

61.72756

61.71384

61.70000

Temperature in

°C

°F

kg/m

Density in

lb/ft

Temperature in

°C

°F

kg/m

Density in

lb/ft

50.5 51

51.5 52

52.5 53

53.5 54

54.5 55

55.5 56

56.5 57

57.5 58

58.5 59

59.5 60

60.5 61

61.5 62

62.5 63

63.5 64

64.5 65

122

122.9 987.8592

123.8 987.6329

124.7 987.4051

125.6 987.1758

126.5 986.9450

127.4 986.7127

128.3 986.4788

129.2 986.2435

130.1 986.0066 131

131.9 985.5287

132.8 985.2876

133.7 985.0450

134.6 984.8009

135.5 984.5555

136.4 984.3086

137.3 984.0604

138.2 983.8108

139.1 983.5597 140

140.9 983.0535

141.8 982.7984

142.7 982.5419

143.6 982.2841

144.5 982.0250

145.4 981.7646

146.3 981.5029

147.2 981.2399

148.1 980.9756 149

988.0839

985.7684

983.3072

980.7099

61.68608

61.67205

61.65793

61.64371

61.62939

61.61498

61.60048

61.58588

61.57118

61.55640

61.54153

61.52656

61.51150

61.49636

61.48112

61.46580

61.45039

61.43489

61.41931

61.40364

61.38787

61.37203

61.35611

61.34009

61.32400

61.30783

61.29157

61.27523

61.25881

61.24231

61.22573

65.5 66

66.5 67

67.5 68

68.5 69

69.5 70

70.5 71

71.5 72

72.5 73

73.5 74

74.5 75

75.5 76

76.5 77

77.5 78

78.5 79

79.5 80

149.9 980.4432

150.8 980.1751

151.7 979.9057

152.6 979.6351

153.5 979.3632

154.4 979.0901

155.3 978.8159

156.2 978.5404

157.1 978.2636 158

158.9 977.7068

159.8 977.4264

160.7 977.1450

161.6 976.8624

162.5 976.5786

163.4 976.2937

164.3 976.0076

165.2 975.7204

166.1 975.4321 167

167.9 974.8522

168.8 974.5606

169.7 974.2679

170.6 973.9741

171.5 973.6792

172.4 973.3832

173.3 973.0862

174.2 972.7881

175.1 972.4890 176

977.9858

975.1428

972.1880

61.20907

61.19233

61.17552

61.15862

61.14165

61.12460

61.10748

61.09028

61.07300

61.05566

61.03823

61.02074

61.00316

60.98552

60.96781

60.95002

60.93216

60.91423

60.89623

60.87816

60.86003

60.84182

60.82355

60.80520

60.78680

60.76832

60.74977

60.73116

60.71249

60.69375

5.13 Specific Gravity

From Software version G2.0 onwards the operator has the option of displaying density as A SPECIFIC GRAVITY.

Spec. Grav. = To set the display for Specific Gravity go to menu Fct. 1.2.5:

Density of Process Fluid Density of Water at 20°C

Fct. 1.2.(5). DENSITY

→

0000.0000

Press the ↑ key repeatedly until the display shows

↑

0000.0000

↑

0000.0000

↵

Fct. 1.2.(5). DENSITY

(g) / cm

(lb) / cm (S.G.)

5.13.1 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” submenu . Program ”actual ” if th e ”Refe rred” or ”Fixed” Options are not de sired.

Referred density corrects the actual density value to a standardised density value based on a reference temperature. The reference temperature and the slope are programmable. The sign of t he slo pe coefficient (α) is always positive based on the assumption that increasing temperature decreases the actual density measured. The referred density equation is as follows:

+ α ( ta − tr )

r = ρa

where ”ρ” is the density and ”t” the temperature. Subscripts ”r” and ”a” indicate ”referred” or ”reference” and ”actual” respectively.

Note that the above equation is linear. Referred density accuracy is determined by how precise a fit a li near funct ion i s to the act ual temperature-density r elationship of the p roces s over the range of operating temperatures. Also note that the coefficient, α , depends on the temperature units selected, °F or °C, as well as the density units selected. The units of α are the change in density per degree change in temperature.

Key strokes for the ”referred density” option shown below - start from the measuring mode: Key Display

line 1

→

Fct.(1).0

×↑

Fct.(3).0

→

Fct.3.(1).0 BASIS.PARAM

↑

Fct.3.(2).0 DISPLAY

→

Fct.3.2.(1) CYCL.DISP.

×↑

Fct.3.2.(5) DENSITY

→ ↑ ↑ ↵

0.0000000 (g)/cm

→

0.0000000 g/(cm3)

→

0(.)0000000 g/cm

↵

+ 20.0

↵

(0).000000 SLOPE/°C 6. set slope (α) of temp. coefficient

↵

Fct.3.2.(5) DENSITY 7. enter inputs

×↵

line 2 OPERATOR

INSTALL

Step #

1. enter programming mode

ACTUAL FIXED REFERRED

REF.TEMP (°C) 2. set ref. temp. -°F or °C, sign &

2. set mass units in this step (or S.G.)

3. set volume units in this step

1. set decimal point location in this step

value

8. return to measuring mode

5.13.2 Fixed Density (Option):

The ”Fixed Density” Option permits setting a fixed, specific density value for the purpose of calculating volumetric flowra te and/or volu metr ic tota l from mass flow. This is useful when dealing with pure liquids or liquids with a known, fixed composition when it is desired to know the volumetric flow referenced to a s pecific (fixed ) den sity at a speci f ic t emperatur e.

It is programmed by selecting ”FIXED” rather than ”REFERRED” and programming the fixed density value in that step (step #4) of the program shown in 6.13.2 where the decimal point is adjusted for ”Referred Density”. After setting the fixed density value, press 4x ↵ to return to the measuring mode. ”Actual Density” is programmed in similar fashion except the density value is not entered as with ”Fixed Density”.

5.14 User data

5.14.1 Programming the display language

The converter can display its message s 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.

Key Display

line 1 line 2

→ Fct. (1).0 OPERATOR ↑↑ Fct. (3).0 INSTALL →7x↑ Fct. 3.(8).0 USER DATA → Fct. 3.8.(1) LANGUAGE → (GB/USA) ↑ (F) French ↑ (D) German ↵ Fct. 3.8.(1) SPRACH E

German selected

↵ Fct. 3.(8).0 USER DATEN ↵↵↵

5.14.2 Password protection of menus

As mentioned in Section 4.2, access to the menus can be protected by a password. This password protection is enabled by Menu 3.8.2. and the password itself 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 changed in Fct. 3.8.3.).

Begin from measuring mode

Key Displa y

line 1 line 2

→ Fct. (1).0 OPERATOR →→ Fct. (3).0 INSTALL →7x↑ Fct. 3.( 8).0 USER DATA →↑ Fct. 3.8.(2) ENTRY.CODE.1 → (NO) ↑ (YES) ↵ Fct. 3.8.(2) E NTRY .CODE.1. ↑ Fct. 3.8.(3) COD E 1 → CodE 1 ---------

any key x9 CodE 1 *********

Enter new password CodE 1 --------Enter the new password again

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: → → → ↵ ↵ ↵ ↑ ↑ ↑

5.14.3 Custody transfer protection code

The converter can be set for measurement with or without the custody transfer protection enabled.

When using custody transfer protection, any additional provisions of the local calibration authority must be adhered to and the entire instrument must be approved by that authority.

The custody transfer protection can naturally also be used without official approval. The calibration protection in the converter affects only the total summating counter. All settings which alter the measured value of mass flow can no longer be altered when the calibration protection is active.

The following cannot be altered :

– Primary head type and CF 1 to 5

– Low flow cut-off

– Custody transfer password

– Mass total display units and format.

– Flow direction

– Flow mode (Set to FLOW > 0 only)

– Standby

– Control input function. (Only acknowledge messages still allowed)

– System control. (Conditions and limits that trigger the system control function are

locked. 0 FLOW+RST function not allowed).

– Mass totaliser can no longer be r eset. W hen t he totaliser rolls over from 99999999

to 00000000 a status message will be set.

When custody transfer protection is enabled a warning message will be generated on any int err up ti on of the m ain s su ppl y, or if t he pr oces s f lui d t em per atu re vari es by mo re tha n ±30°C fr om the t emperature that the zero calibration was per formed at . To enable or disable the custody transfer protection, use menu Fct. 3.8.6. CSTDY CODE.

Begin from measuring mode.

Key Display

line 1 line 2

→ Fct. (1).0 OPERATOR 2x↑ Fct. (3).0 INSTALL. → Fct. 3.( 1).0 BASE DATA 7x↑ Fct. 3.(8).0 USER DATA → Fct. 3.8.(1) LANGUAGE 5x↑ Fct. 3.8.(6) CSTDY CODE → CodE 3

Input 9-keystroke Entry-Code

CODE (NO) ↑ CODE (YES) 4x↵

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.

Key Display

line 1 line 2 → Fct. (1).0 OPERATOR 2x↑ Fct. (3).0 INSTALL. → Fct. 3.(1).0 BASE PARAM. 7x↑ Fct. 3.(8).0 USER DATA → Fct. 3.8.(1) LANGUAGE 6x↑ Fc t . 3.8.(7) C ODE 3 → CodeE 3 - - - - - - - -

Enter new custody transfer

password two times.

Fct. 3.8.(7) C ODE 3 4x↵

If the two entered passwords are different the message "CODE WRONG" is displayed. The message has to be acknowledged with the ↵ key and input must be repeated with Fct.

3.8.7.. Then the protecti on sta te 'activ e' or 'inactive' can be chosen w i th Fc t.3.8.6.. NOTE:

If the input of the custody transfer password is wrong, a 9-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. ENABL.RESET determines whether the operator can clear the mass total from the ACKNOWLEDGE/RESET MENU.

Begin from measuring mode.

Key Display

line 1 line 2 → Fct. (1).0 OPERATOR 2x↑ Fct. (3).0 INSTALL

→7x↑ Fct. 3.(8).0 USER DATA →4x↑ Fct. 3.8.(5) ENABL.RESET → (YES) ↑ (NO) ↵ Fct. 3.8.(5) ENABL.RESET

4x↵ +110.25 kg

Mass Total Display

↵ CodE 2 - - ↑→ RESET MASS → BLOCKED

Totaliser Reset is disabled

↵↵

5.14.4 Primary head type and tube parameters (CF1 - 5)

The primary head type and tube parameters are factory set and should not normally be changed by th e c u st om er . They a r e o nl y n orm a ll y needed i f th e c on v er t er h a s t o b e r ep l a ced i n t h e fi el d. In this case, the new converter must be programmed with the correct primary head type, and parameters, CF1 to CF5, must be entered as printed on the data plate. In order to prevent accidental changes to key parameters CF3 and CF5 and the Primary head type, an additional level of password protection is included. The operator may freely look at these parameters as ”READ ONLY” but he may only be able to change it when he has first entered the correct PARAM.CODE 4 password.

Fct. (1).0 OPERATION

↑↑ →↑ × 7 →↑ × 7 ↑ ↵↑ ↵

Fct. (3).0 INSTALL Fct. 3.(8).0 USER DATA Fct. 3.8.(8) PARAM.CO DE.4 CodE 4 – –

Fct. 3.8.(8) PARAM.CO DE.4

The operator may now edit, (if required), CF3, CF4, CF5 as well as PRIMRY.TYPE. Having made the changes the operator should save them and return to the main displays. Once back in the main displays any subsequent attempts to edit these parameters will be blocked until the PARAM.C ODE.4 password is re-entered.

To ed it th ese param eters:

Key Di splay

line 1 line 2 Fct. 3.8.(8) PARAM. CO DE.4

↵↵ Fct. (3).0 INSTALL →→4x↑ Fct. 3.1.( 5) PRIMRY.TYPE → (10G) T ↑ (100G) T ↑ (300G) T → (300G) T ↑ (300G) T+

Select the correct size and type (T, T+, Z, Z+) as printed on the data plat e.

↵ Fct. 3.1.(5) PRI MRY. TYPE ↑ Fct. 3.1.(6) CF5 → (0)16.000 CF5

Enter CF5 as printed on the data plate.

↵ Fct. 3.1.(6) CF5 ↵ Fct. 3.1.0. INST ALL 8x↑ Fct. 3.9.0. TUBE PARAM → F ct. 3.9.1. CF1

Enter CF1 to CF4 (Fct. 3.9.1. to

3.9.4.) as printed on t he dat a plate.

4x↵

5.14.5 Location

It i s possibl e to pr ogram eac h unit wi th an in divi dual id entifi cation number . This i s esp eciall y useful if the 'SMART' option is being used. To set the location number :

Begin from measuring mode

Key Display

line 1 line 2

→↑↑ Fct. (3).0 INSTALL →7x↑ Fct. 3.( 8).0 USER DATA →↑↑↑ F ct. 3.8.(4) LOCATION → (M)FC 085

Factory Setting

Use the ↑ key to change the character under the cursor. The sequence is : A to Z, 0 to 9, +, -, *, /, =, SPACE.

Use the → key to move the cursor to the next character. Press ↵ key when completed.

Part C Special options, Functional checks, Service and Order

numbers

6. Special Options

6.1 Use in hazardous areas

MFM 4085 K/F - Ex Coriolis massflow meters are approved for use in hazardous areas as electrical equipment in conformance with the harmonised European Standards and Factory Mut ual (F M). Conf orm ity between t he tem per atu re cl asses and t he tem pera ture o f the p roc ess fluid, meter size and material of the measuring tube is defined in the test certificate. The Test Cert ific ate, certi ficat e of confor mity an d wiring in structi ons are i ncluded in the In stallat ion and Operating instructions for Ex equipment.

This is a separate manual to the standard Installation and Operating manual and is only supplied when an instrument for use in a hazardous area is ordered. If you have an ”Ex” instrument, please ensure that you have this manual and read it carefully before using the massf lo w meter.

6.2 Converter with non-standard output options

The flowmeter may be supplied with one or more of the output options as mentioned in Part B, Section 4.7. These are factory fitted options and changes should not be attempted by unqualified personnel. 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.

*Al l option s are not compati ble in certain configurations wi th older v ersi ons of software.

6.3 Concentration measurement

The Corimass G-Series may be fitted with a concentration measurement option. This option enables the meter to measure sugar concentration in °Br ix or °Baum é, co ncent ratio n by mass or volume.

The fluid may be a liquid / liquid or a liquid / solid suspension mixture. If the meter has been fitted with this option a separate Concentration manual will be supplied with the meter. If you have any queries, please contact your local Krohne office for further assistance.

6.4 Converter with Hart communication option

The instrument menu can be accessed and programmed remotely via the 4 - 20 mA output. The followi ng opt ions are av aila ble:

a) H.H.C Hand-Held Communicator with Hart communications protocol. b) MS DOS PC via an RS 232 adaptor and CONFIG software

Detailed instructions are supplied when these options are purchased. Refer t o t he section with the Order numbers for ordering details or contact Krohne.

6.5 Converter with RS 485 or Modbus Communication option

When this option is fitted only one analog 4 - 20 mA output is fitted as well. Detailed description of the Krohne RS 485 or Modbus protocol is available on request or when

the meter is ordered a copy is included in the instruction package.

6.6 Custody Transfer option

The G-Series has been approved for custody transfer applications in Germany. If you have a custody transfer application, please check with your local authorities in the weights and measures department for loca l requirements.

Krohne will gladly assist in obtaining a local approval.

7. Functional checks

7.1 Test 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 converter and the customer's equipment can be verified. In addition, other functions allow various measured parameters from the primary head to be viewed directly for trouble shooting purposes.

7.1.1 Testing the display

This function sends a test sequence to the LCD display which causes each element of the display to be lit in sequence. If any segments fail to light, this indicates that the display is faulty and should be replaced.

Begin from measuring mode.

Key Di splay

line 1 line 2

→↑ Fct. (2).0 TEST → Fct. 2.( 1) TEST DISP. → Display blanks then starts its

test sequence

The test may be terminated at any time by pressing the ↵ key, otherwise the display returns automatically when the sequence is complete.

7.1.2 Testing current output

This function allows a number of fixed current levels from 0 to 22 mA to be driven from the current outp ut. Thi s f unction interrupts the norm al opera tion of the output, so the op erat or will be asked if he is sure before the test commences.

Key Display

line 1 line 2

Fct. 2.(1) TEST DISP.

↑ Fct. 2.( 2) TEST I → SURE (NO) ↑ SURE (YES) ↵ (0 mA)

0 mA is output

↑ (2 mA) ↑ (4 mA) ↑ (10 mA) ↑ (16 mA) ↑ (20 mA) ↑ (22 mA) ↑ (0 mA)

Press the ↵ key at any time to stop the test and return the output to normal operation.

System s wit h two or m ore c urrent ou tputs

From software G2.00 onwards programmin g of any current output will be by menus Fct. 1.3.0 and Fct. 3.3.0 (testing will be by menu Fct. 2.2) regardless of how many current outputs are fitted. When programming (or testing) a system with two current outputs the operator must first select the desired 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

7.1.3 Testing pulse output

This function allows the frequency/pulse output to be tested. The frequency output has an open collector transistor drive which requires a pull-up resistor to an external DC power supply. (Sect.

2.3). When this output is connected to the customer’s instrumentation, reliable operation can only be ensured if the customer takes proper care to ensure the connection is properly screened against external electrical interference. Therefore, it is important that this output connection should be thoroughly tested before being put into use.

To test the frequency, connect a frequency meter to the pulse output t erminals and proceed as follows:

Key Display

line 1 line 2

Fct. 2.(2) TEST I

↑ Fct. 2.(3) TEST P → SURE (NO) ↑ SURE (YES) ↵↵ Fc t. 2. 3.( 1) FREQUENCY → (LEVEL LOW)

0V on the output

↑ (LEVEL HIGH)

+V on the output

↑ 1 Hz

A frequency meter connected to the output will show 1Hz.

↑ 10 Hz ↑ 100 Hz ↑ 1000 Hz

After testing the

1000 Hz signal

connect a counter to the out put.

↵ Fct.2.3.(1) FREQUENCY

To test the pulse output, connect an external counter to the output terminals. When testing the pulse output, the oper ator has t he choice of the followin g pulse widths: 0.4 ms, 1.0 ms, 10.0 ms, 100.0 ms and 500 ms. The operator should choose the pulse width that best matches the performance of his external pulse counter.

Connect a pulse counter to the impulse output and proceed as follows:

Fct. 2.(3).0 TEST P

→ ↑ ↵ ↑ →

Fct. 2.3.(1) FREQUENCY Fct. 2.3.(2) TEST PULSE

SURE (NO)

SURE (YES)

(0.4 mSec)

Use the ↑ to select the desired pulse width

↑ ↑ ↑

(1.0 mSec)

(10.0 mSec)

(100.0 mSec)

Having selected the pulse width zer o th e external counter and then press ↵

↵

625 100.0 mSec

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. In this case try the following suggestions:-

(i) D ecrea se th e external pull-up res ist or (ii) Decrease/ remove the filter capacitor. (ii i) Dec reas e the c abl e length between the c onverter and t he counter. (iv) Add external buffers to boost the signal.

If the pulse counter reads a larger number than the converter, or if the frequency meter reading is h i gh or un st a bl e, t hen t hi s in di c ates th e p r es enc e o f ext er n a l i nt er f er en c e. T ry one o r m or e of the following:-

(i) Add/increase the size of the filter capacitor. (10 - 100nF) (ii) Use high quality screened cable. (iii) Keep cable lengths as short as possible, avoiding high power equipment/switchgear and

any cabling connected to them.

(iv) Use external buffers.

7.1.4 Testing alarm output

This is a simple function that allows the alarm output to be tested at both its high and low states.

Key Display

line 1 line 2 Fct. 2.(3) TEST P

↑ Fct. 2.(4) TEST A → SURE (NO) ↑ SURE (YES) ↵ (LEVEL LOW)

0V on the output

↑ (LEVEL HIGH)

+24V on the output

↵ Fct. 2.(4) TEST A

7.1.5 Testing control input

Menu 2.5 allows the state of the control input signal to be tested.

Key Display

line 1 line 2

Fct. 2.(4) TEST A

↑ Fct. 2.(5) TEST INP.E → HI RESET MASS

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. However, whilst using the test function no action will be taken in response to the input (i.e. the total will not be reset). NOTE: If the input is disconnected it will read LO.

7.1.6 Viewing temperature and strain

Menu 2.6 allows the current temperature and strain gauge readings to be monitored. These fi gures are us ed internally by software for flow and density compensat ion.

Key Dis play

line 1 line 2 Fct. 2.(5) TEST INP.E

↑ Fct. 2.(6) TEST TEMP. → 20.0 °C

Current temperature °C

↑ 68.0 °F

Current temperature °F

↑ 465.05 STRAIN

Resistance of the Strain Gauge in Ohms.

↵ Fct. 2.(7) TEST TEMP.

7.1.7 Viewing primary head signal conditions

Menu 2.7 allows four measured parameters from the primary head to be displayed.

Sensor A, Sensor B (Fct. 2.7.1 and 2.7.2)

These give the normalised sensor signal levels from the primary head. In normal operation these are controlled so that they both read about 80 - 82%.

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 air in the process fluid.

Frequency (menu 2.7.3)

This function displays the current resonant frequency of the primary head. This value is primarily used to calculat e t he density of t he process fluid.

Installation f actor (menu 2.7.4)

This factor is a measure of the quality of the primary head's installation. This figure shows roughly how much energy is required to sustain the oscillations in the primary head. Generally, the lower the installation factor the better the installation, any reading less than 20 for 10 to 800 G, 30 for 1500 G, 40 for 3000 G is acceptable (See Section 1.2.4 for Ex Installation factors which are higher.). In addition, if the process fluid has a large gas content this will have the effect of damping out primary head oscillation, which will in turn cause the installation factor to increase.

8. Service and Troubleshooting

8.1 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.

The grease used must be non-corrosive to aluminium and should be acid- and resin-free.

8.2 Replacing the converter electronics

Always switch off power before commencing work!

For Ex version allow 30 minutes to cool before opening housing.

1. Use the s peci al wrench t o remove th e cover fr om the t er minal compar t ment.

2. Di sconnect all ca bles f r om the terminals in the rear term i nal c ompartm ent .:

MFC 085 : term. 5/6/4/4.1/4.2/11/12

3. Use the s peci al wrench t o remove th e cover fr om the el ectronic 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 complete electronics.

7. On the electronics, check the supply voltage and fuse F9, and change / replace if necessary, see Sect. 8.3.

8. Reassemble in reverse order (points 6 to 1).

9. Primary head specific parameters, as printed on the data plate, must now be entered on to the new converter. (see sect ion 7.1).

10. Subsequently be sure to check the zero and store the new zero value.

A. Screws that hold the display PCB in place.

B. Ribbon cable connecting display PCB to converter electronics.

Important: Ensure that the screw thread of the covers on the electronics and terminal

compartments are well greased at all times. The grease used must be noncorrosive to aluminium and should be acid- and resin-free.

C. 10-pin sensor connector. D. Screws that hold the

con verter electronics in place.

8.3 Change of operating voltage and power fuse F9

Always switch off power source before commencing work!

Rem ove elect ronics as describ ed in Sec tion 8.2.

8.3.1 Replacement of power fuse F9

The mains fuse F 9 of the convert er, si ts on the pow er su pply b oard besid e the transformer, as shown below. The fuse will not blow, unless there was either a connection error or a fault in the converter itself. The table below shows the right fuse for the different voltages the converter could be set to. Do not use any other than the specified type.

For position 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 in anti-surge type with a breaking capacity of 1500 A at 250 V AC. For part numbers, see table under section 9, Order numbers.

8.3.2 Changing the operating voltage

1. Insert voltage select cable into the correct position on the power supply circuit board, to obtain desired voltage.

2. If necessary, change fuse F9 to suit the new voltage. (See fuse table for values of F9)

IMPORTANT

If the operating voltage has been altered from the factory setting, ensure that the primary head’s data plate and the label on the F9 fuse holder are amended accordingly.

Power supply l ayout

8.4 Turning the display circuit board

To ensure horizontal positioning of the display irrespective of the location of the MFM 4085 K compact flow meter, the display circuit board can be turned through 90° or 180°.

1. Swit ch off the power supply!

2. Unscr ew the co ver from t he electro nics comp artment using t he special wrench.

3. Remove screw A from the display board.

4. Turn display board into desired position.

5. Fold the ribbon cable as shown in the following drawings. Please follow directions scrupulously so as to avoid damage to electronic components and printed boards! For the version on the right the screws A must be repositioned on the display board.

6. Carefully screw down the display board.

Directions for folding the ribbon cable on the display circuit board:

8.5 Turning the signal converter housing

To facilitate access to connecting, indicating and operating elements on MFM 4085 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 wires between primary head and signal converter housing are extremely short and can break easily.

2. Switch off the power source!

3. Clamp the flow meter firmly by the primary head housing.

4. Secure the converter housing against slipping and tilting.

5. Loosen slightly but do not remove the 4 bolts connecting the two housings.

6. Carefully turn the converter housing clockwise or anti-clockwise a maximum of 90°, but do not lift the housing. If the gasket should stick, do not attempt to lever it off.

7. To conform to the requirements of protection category IP 67, keep connecting faces clean and tighten the 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.

8.6 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 f irs t t ime. They are no r mally due to incorrect inst al lat ion 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. During this time, the converter tries to activate the primary head. Usually, the desired value for the oscillation amplitude is reached after a few seconds and the converter starts displaying mass flow. However, if the display is flashing, the system cannot enter the measuring mode. The problem is signalled by the arrow to 'Status' on the front plate.

First of all, it is advisable to inspect the installation to determine if it was installed in compliance wit h th e in stal la ti on in str uct io ns. If th is i s the c as e, t hen t he f oll owi ng st eps s hou ld be t aken f or localising the fault :

If the primary head is not installed in a vertical position, increase the flush period and flow rate in order to remove air bubbles and solid materials from the primary head. If th e primar y head star ts to oscil late, but the m easur ed val ues ar e err atic o r the p rima ry hea d keeps ret urn ing to STAR TUP, then the po ssible ca use of the trouble cou ld be:

1. Poor installation causing an excessively high installation factor.

2. Bad zero calibration. Monitor the primary head's INSTAL.FACT using Fct. 2.7.4. If the reading is high, (see Section

1.2.3) then this indicates either poor meter clamping or excessive gas in the process fluid. For horizontally installed systems, flush the meter at a high flow rate to remove any air bubbles that may have collected. Shut off the flow and recheck the drive level. If the drive reading is still high, check that the meter has been installed and clamped correctly. In a poor installation, drive power is wasted in transmitting vibrations to the attached pipe work, and this greatly degrades meter performance. As a general guide, the clamping should be adjusted as described in the installation manual.

Sympathetic vibrations, which are transmitted to the primary head via the floor or the pipe system, can lead to an unstable zero point. This can cause the mass totalizer to ”creep” with time, even wh en the flo w i s shut off.

Another reason for an increase in the display of the flow rate is due t o calibrating the zero point with a non-zero flow rate. In this case, make sure that the shutoff valves are completely closed and then re-calibrate the zero point.

Problems occurring during the measuring process

During operation the system is continually checking itself and its measured values against various conditions . If one or more of th ese condi tio ns ar e broken, then t he system indicates that a problem has occurred and various messages are stored in an internal message list. Whenever a new problem is found the display starts to flash and the status arrow is lit, drawing the operator's attention to the problem. The display will continue to flash indefinitely until the operator acknowledges the warnings.

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 oper ator is as ked t o acknowledg e th e warnin gs wi t h 'Q UIT (YES)' prompt. If the operator selects YES by pressing the ↵ key, the system will attempt to remove th e warnings from the list. If the source of a problem is still present (say mass flow is too high for example) the warning can not be removed from the list. When the operator returns to the measurement mode the display will have stopped flashing 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 possible to indicate in the main display if so desired (see section 5.12).

In summary

The display flashes if the meter has detected problems that have not been acknowledged by the operator. The status arrow is shown until all warnings have been acknowledged and cleared. – The warning message shown in the display, if cause is still present. – A warning is contained in the message list if : The c ause of the problem i s still present. The cause of the problem is no longer present, but the warning has not yet been acknowledged. – A message shows three bars "≡" as long as it has not been acknowledged.

A complete list of warning messages and their causes are given on the following page.

Status messages

ERROR MESSAGES

SAMPLING SENSOR A SENSOR B RATIO A/B EEPROM SYSTEM

WATCHDOG

NVRAM DC A DC B NVRAM FULL MASS FLOW ZERO ERROR

TEMPERATUR Light STRAIN CURRENT.SAT Output FREQ.SAT ALARM.OUT.A Output ROM DEF TOTAL O/F

TEMP.CUST

POWER.FAIL

TYPE

Severe Severe Severe Severe FATAL FATAL

Severe

Severe Severe Severe Light Light Light

Light

Output

Light Light

Light

COMMENT

PLL out of range Sensor A voltage signal less than 5% of desired value Sensor B voltage signal less than 5% of desired value One sensor signal much larger than the other Unable to save data in EEPROM. Hardware fault. Indicates software error, will always occur with

WATCHDOG Reset due to SYSTEM error or temporary power supply

drop-off NVRAM check sum error, previous data lost DC voltage part of sensor A is larger than 20% of ADC max DC voltage part of sensor B is larger than 20% of ADC max NVRA M has exceeded it s spec ifi ed num ber of w r ite cycles Mass flow rate > 2 nominal flow * Mass flow rate at zero adjust is larger than > 20% of

nominal (100%) flow rate * Temperature > out side o pera ting rang e

Strain out of operating range Current output saturated ** Frequency output saturated ** Pro cess alarm l imit check exceeded ** EEPROM check sum error, defaults loaded from ROM Custody transfer only. Mass total has overflowed the

display, i.e. it has gone from 99999999 to 00000000 Custody transfer only. Operating temperature has drifted

by more than ±30°C from the zero calibration temperature Custody transfer only. There has been an interruption of

power to the converter.

* Actual mass flow rate is too big or manual zero offset PUTIN.VAL in Fct. 1.1.1 was

programmed incorrectly .

** Change output range to avoid saturation.

8.7 Fault finding

Most of the common faults and symptoms experienced with the flowmeter can be resolved with the help of the following ta ble.

To simplify the use of the table, the faults and symptoms are grouped together: GROUPS D

I P A E OP ST

Please check the following table of hints and advice before

Display, inputs and outputs Current output Pulse output Alarm output (Status) Control input (Binary) Measurement mode and commissioning Commissioning and Start-up of the flowmeter

calling your KROHNE Service Department.

Group Fault / Symptom Group D

No displa y or out puts

Fluctu ating displ ay an d outputs

Mass flow display incorrect The wrong val ues for

Density display an d outputs not correct

Group

Connected instr u m ent displays 0 or negative values

Cause

Power not switched on Power supply fuse F9

blown Fuses F10 , an d/or

F12 blo wn Time constant too small

parameters CF3 - CF5 programmed. (Th es e are stamp ed on th e d at a pl at e)

Zero calibration

Primary sensor faulty Parameters CF 1-4 incorrect Check the correct according

Excitati on frequ ency of primary sensor not correct when filled with water (see section 1.2.5)

Primary sensor faulty

Connection polarity wrong

Connected instr u m ent faulty or cur r ent output f aulty

Remedy

Switch on power Replace fuse as per

Section 8.3.1 Replace converter as per Sect. 8.2 or call Krohne service.

Increase time constant as per Section 5.3.

Ch eck a n d c orr ect accor d ing to Sections 5. 1 2 an d 5.14.4

Re-do zero, check manual offset Check as per Section 8.8

to 5.12 - 5.14 : Check for air in meter. Call Krohne.

Check as per Section 8.8

Correct as per Sect. 2.3

Check output with a mA meter.

Test OK

Check cabling and connected instrum en t and replace if necessary.

Test faulty

Current output faulty. Replace convert er or c all Krohne service.

Group Fault / Symptom

Cause

Remedy

Group P

Wrong dis play on connected instrument

Fluctu ating displ ay on connected instrument

Connected totalizer not counting

Fluctu ating puls e rat e

Pulse rate too high or too low

Group A

Alarm ou tp ut n ot functioning

Incorrect voltage level at output terminals (Hi/Lo)

Current output switched off.

Current program m in g not correc t.

Time constant too small

Connection / polarity not correct.

Totalizer or external suppl y volt ag e faulty.

Alarm output is used as external volt ag e sup pl y, a possible electrical short-circuit or alarm/ p ulse output faulty.

Pulse outp ut is switch ed off

Time constant too small

Program ming of pulse output incorrect.

Exte rnal induced noi se due to low qual it y c abl e or unscreened cable.

Connection / polarity incorrect.

Alarm ou tp ut or extern al instrument faulty

Alarm output switched off

Incorr ec tl y program m ed in Fct. 3.5.2

Switch on as per Fct.

3.3.1 Correct the programming

as per Fct. 3.3.1 - 3.3.4 Increase the time

constant as per Fct. 3.1.3

Ch eck a n d c orr ect as p er Section 2.3

Check out put with totalizer: Test OK Check cabling and totalizer. Check external volt ag e supply Test faulty Pulse outp ut fault y. Rep l ac e convert er or c all Krohne Service.

Check connections as per Section 2.3. Voltag e bet w een termin als 5 and 4. 2 approx. 24 V. Correct short circuit if present. I f s till faulty the alarm or pulse output is f aul t y. Re-place converter or call Krohne Service.

Switch on as per Fct.

3.4.1 Increase time constant as

per Fct. 3.1.3 Correct pr ogr am m ing as

per Fct. 3.4.1 - 3.4.4 Check c abli ng and replac e

with screened cable. See Section 2.3

Correct as per Sect. 2.3

Program al arm output to ”direction” as per Fct. 3.5.1. Set flow direction to negative and chec k al arm output . Test OK Check ext er n al instrument and i f necessary replace. Test faulty Alarm output faulty. Replace convert er or c all K r ohne Service.

Switch on as per Fct.

3.5.1 Corr ect as f oll o w s:

Hi = 24 V Lo = 0 V

Group Fault / Symptom Group E

Control input does not function

Group ST

ST1

Display k eeps retur ning to ”test”. (during start-up)

ST2

Display returns to ”Start up” and the status arr ow is illumin at ed .

ST3

Group OP

OP1

OP2

Display returns to Startup and the primary sensor is noisy.

Installation factor than v alue given in Sect.

1.2.3

Display indicates a flowrate during zero setting. Valves closed.

larger

Cause

Connection / polarity incorrect.

Programming incorrect

Control input switched off.

Poor/intermittant power. Supply to meter. Hardware failure

Possibl e p oor m ec h anical install ati on.

Primary Sensor faulty Fuse F11 blown. (negative

analog v olt ag e) . Sensor cannot vibrate

freely due to poor mechanical installation.

Mechanical installation not correct or air bu bbles in process fluid. External influences due to pu m ps , motors, etc.

Valves not shut tight or air in process fluid.

Zero calibration not OK

Remedy

Correct as per Sect. 2.3

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 f ault y. Replace converter or call Krohne Service.

Switch on as per Fct.

3.6.1

Check incoming su pply

Replace converter or call Krohne Service.

Check install factor and correct ins tallat i on as p er Section. 1

Check the status list in reset/quit menu as per Section 4.5 and acknow-led ge the error m essage. Check as per Sect. 8. 8 Call Krohne Service.

Correct installation as per Section 1 and try again.

Check installation and corre c t if necessary (see Section 1) . Flush pr oc es s pip e work to get rid of air.

Check valves for tight shutoff. Flush lines with high velocity.

Check that flow is zero and pipe is full without air bubbles. Do automatic calibration as per Section 5.1 and ensure that a ”0” is progr am m ed in the zer o set function.

8.8 Checking the Primary Head Remember! Always switch the power off before opening the converter housing.

Required tools and test equipment

– Phillips screwdriv er – Multimeter – Special wrench to unscrew converter housing lids

8.8.1 Compact Meter

A. Screws that hold the display PCB in place.

B. Ribbon cable connecting display PCB to co nverter elect r onic s.

C. 10-pin sensor connector.

Pre liminary prepara t ion

– Remove front lid of electronic housing – Unscrew the two screws ”A” that hold down the display PCB and fold the ribbon cable and

PCB carefully to one side.

– Unplug blue primary connector ”C” from amplifier board

D. Screws that hold the converter elec tronic s in pl ace.

P. Power supply circuit board

10-Pin Sensor Connector ”C” (Connector between primary and converter)

(grey)

(white)

(orange)

(green)

(yellow)

(blue)

(red)

(brown)

Colours in parenthesis are valid for Ex-converters

Testing the resistance values of the sensors and exciter

1 Measuring tube driver:

Measure between grey and black 30 - 50 ohm

2To check sensor A and B:

Measure between: green and violet (Sensor A) white and yellow (Sensor B)

3 To check the temperature

sensor (RTD):

Measure between blue and red.

4 To check the strain gauge:

Measure between orange and red. 400 - 600 ohm

Typical values Assessment of

measured values

Measurements outside typical values:

50 - 130 ohm

Primary faulty Replace or call Krohne service.

500 - 550 ohm

(ambient temperature

dependent)

Measurements inside typical values:

Sensor OK

(black)

(violet)

8.8.2 Remote Meter

The G meter can be supplied as remote meter with 5 m cable. Under no circumstances should the cable cut be shorter or joined to increase its length. The meter is calibrated with this 5m cable length. An y ch anges will i nfluence the performance of th e meter. There are two di fferent conf igurations of remote meter, on the firs t vers ion the cable is cast on the converter end and the second has a terminal junction box at the converter end. On the junction box version, the measurements can be done at the terminals. On the cast version, measurements can be done on the blue primary connector (see section 8.8.1).

Testing the resistance values of the sensors and exciter

1 Measuring tube driver:

Measure between white and black

2To check sensor A and B:

Measure between: green and black (Sensor A) orange and black (Sensor B)

3 To check the temperature

sensor (RTD):

Measure between blue and black

4 To check the strain gauge:

Measure between black and red.

Typical values Assesment of

measured values

30 - 50 ohm

Measurements outside typical values:

50 - 130 ohm

Primary faulty Replace or call Krohne service.

Measurements inside

500 - 550 ohm

(ambient temperature

typical values:

Sensor OK

dependant)

400 - 600 ohm

8.9 Status Warnings

The MFC 085 can detect a number of anomalous conditions during operation. These are classed into four groups as follows :

LIGHT

These include : – Mass flow >2x primary head rating. – Tem perature outside operating range – Mass total overflow. Typ ically these i ndica te a probl em w ith the use o f the i nstrument , not the instrument i tsel f.

OUTPUT

Thes e warni ngs occu r where t he conver ter is tr ying to d rive a sig nal on ei ther t he curr ent or fr equenc y output which is out side th e select ed ra nge. For exampl e: Max f low = 10 kg/mi n 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. Saturation of the outputs in this way may or may not be a problem for the operator, so it is optional as to whether a warning is set or not in this case. (If required, the process alarm could be used to indicate independently the saturation of the outputs). In addition, if the Process Alarm is used to detect that a measured value is out of range then this also generates an output warning.

SEVERE

These include any fault that causes the primary head to stop vibrating. This may be due to large quantities of air in the process fluid or to poor clamping of the instrument. Severe errors may also be due to a hardwar e fault. The instrument will rest ar t a s soon as the fa ult cl ear s.

FATAL

Fatal errors indicate a major fault with the converter. In this case the converter stops completely and 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 display will start to flash and the status arrow on the display will be set. The flashing display enables the operator to see from a distance that a problem has occurr ed. Th e oper ator can now inspect the list as f oll ows: Begin from measuring mode.

Key Display

line 1 line 2

↵ CodE 2 - - ↑ CodE * - → RESET MASS ↑ MSG. LIST →≡2 Err≡ MASS FLOW

→ 2 Err I1 SAT

↵ QUIT (YES) ↵ MSG. LIST

(Flow > 2 x Nominal tube flow) The "≡" symbols indicate that this warning has not previously been acknowledged.

(Current output saturated)

If the operator selects "QUIT YES" the status arrow will disappear if the causes of th e warning hav e themsel ves cl eared . How ever, i f for example the m ass flow is still too large, then the arrow will remain. On returning to the measurement, however, the display will have stopped flashing. This shows that the warnings have been acknowledged by the operator even if it was not possible to clear them. In this event, the flow rate should be reduced and "QUIT YES" selected again.

The u ser c a n c ontrol th e l ev el o f w ar ni n gs f r om Fc t. 1 .2 . 2. T h i s menu al s o allo ws t h e w ar ning t o be viewed directly from within the measurement mode if desired.

The o pera tor can choose f rom:

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 o u tput wa rning s in main d is play.

ALL MESG.

All warning messages displayed. NOTE:

Only if "OUTPUT" or "ALL MESGS." are selected above will saturation of the outputs trigger a con verter warning (display flashing etc.), oth erwise these co nditions are completely ign ored.

If this facility is enabled then the operator may view the warnings as follows : Begin from measuring mode

Key Display

↑ (≡2 Er r≡ Mass Flow) ↑ (0.98 g/cm3)

↑ (2 Err I1 SAT) ↑ (1244.344 kg) ↑ (≡2 Er r≡ Mass Flow) ↑ (20.4 °C)

line 1 line 2 (23.124 kg/min)

whole display flashing error not yet acknowledged

To s et up the converter to disp lay errors in the mea suring mo de: Begin from measuring mode

Key Display

→ Fct. (1).0. OPERATOR →↑ Fct. 1.(2).0. DI SPL AY →↑ Fct. 1.2.(2) STATUS MSG. → (NO MESSAGE) ↑ (PRIMRY.HEAD) ↑ (OUTPUT.) ↑ (ALL ME SGS. ) ↵ Fct. 1.2.(2) STATUS MSG

4x↵

If the cur rent out put is set to a rang e with a warning stat e (e.g. 0 - 2 0/22mA) t hen the outp ut will jump to that state when any anomalous condition occurs.

line 1 line 2

9. Order numbers

Standard Converters 100 - 240 V AC HART CE 21 - 48 V AC HART CE

24 V DC HART CE 100 - 240 V AC Multi I/O HART CE 21 - 48 V AC Multi I/O HART CE

24 V DC Multi I/O HART CE

Order Number

2.10710100

2.10710340

2.10725100

2.11239020

2.11239040

2.11239060

Ex Converters 100 - 240 V AC HART CE 21 - 48 V AC HART CE

24 V DC HART CE 100 - 240 V AC Multi I/O HART CE 21 - 48 V AC Multi I/O HART CE

24 V DC Multi I/O HART CE

Order Number

2.10724100

2.10724340

2.10726100

2.11239080

2.11239100

2.11239120

Power Supply - Fuse F9

Value 160 mA T 315 mA T 800 mA T

1.6 A T

1.25 A T

Order number Fuse type

5.07379.00

5.05804.00

5.08085.00

5.07823.00

5.09080.00

5 × 20 mm G-F use Switching capacity 1500 A

TR 5, switching capacity 35 A

Fuse

F 10 +5 V Analog voltage F 11 Negative Analog voltage F 12 Input /output functions

Value 500 mA T 100 mA T 160 mA T

Thes e fus es F10, F1 1 & 12 are soldered into the p ower supply and are essential to ens ure the system complies with the European Union’s low voltage directive. Any attempt to replace these fuses will invalidate the waranty and should not be attempted by the customer. These fuses will only blo w in the event of:

− Custom er abuse, i.e. removing the display with the power still on or incorrect use of outputs.

− Hardware fault

Spares and accessories Order number

1. Special spanner for lid 3.07421.01

2. Lid ”O”ring seal

3. RS 232 Adaptor and Config. Software 2.10209.00

4. Magnet 2.07053.00

Part D Technical Data, Measurement principle and Block

diagram

10. Technical Data

10.1 Measuring ranges and error limits

CORIMASS MFM 4085 K&KM 10 G 100 G 300 G 800 G 1500 G 3000 G

Measuring ranges (*see “Reference conditions” below)

Nominal flow rate 10 kg/min 100 kg/min 300 kg/min 800 kg/min 1500 kg/min 3000 k g/min

600 kg/h 6000 kg/h 18000 kg/h 48000 kg/h 90000 kg/h 180000 kg/h 22 lb/min 220 lb/min 660 lb/min 1760 lb/min 3300 lb/min 6600 lb/min

Useable range 20 kg/min 200 kg/min 600 kg/min 1600kg/min 3000 kg/min 6000 kg/min

Min. flow rate 0.25 kg/min 2 kg/min 5 kg/min 15 kg/min 25 kg/min 50 kg/min

Measuring accuracy / error limits (See reference conditions below) Mass flow better than ± (0.15% of MV + Cz)

Density (range 0.5 - 2 g/cm3 or 30-125 lb/ft3, field calib.)

Temperature (within temperature range)≤ 1°C/1.8°F

Zero stability

Repeatability better than ± (0.04% of MV + Cz)

*Ref erence conditions (puls e output) Liquid Water at 20°C / 68°F Ambient temperature 20°C / 68°F Operating pressure 2 bar / 29 psig

1200 kg/h 12000 kg/h 36000 kg/h 96000 kg/h 180000 kg/h 360000 kg/h 44 lb/min 440 lb/min 1320 lb/min 3520 lb/min 6600 lb/min 13200 lb/min

15 kg/h 120 kg/h 300 kg/h 900 kg/h 1500 kg/h 3000 kg/h

0.55 lb/min 4.4 lb/min 11 lb/min 33 lb/min 55 lb/min 110 lb/min

0.009 g/cm

0.56 lb/ft

0.0005kg/

0.0011lb/

MV = measured value

0.003 g/cm

0.19 lb/ft

± ≤ 1°

0.005 kg/min±0.015 kg/min± 0.04 kg/min±0.075kg/min±0.150 kg/min

min

0.011 lb/min± 0.033 lb/min± 0.088 lb/min±0.163 lb/min±0.326 lb/min

min

Cz [ % ] =

C/1.8°F

0.13 lb/ft

≤ 1°

zero stability × 100% mass flow

0.002 g/cm

C/1.8°F

0.002 g/cm

0.13 lb/ft

≤ 1°

}{

C/1.8°F

0.002 g/cm

0.13 lb/ft

≤ 1°

0.002 g/cm

0.13 lb/ft

C/1.8°F≤ 1°C/1.8°F

10.2 Primary head

(

CORIMASS MFM 4085 K and KM 10 G 100 G 300 G 800 G 1500 G 3000 G

Connections

Flange DIN 2635 PN 40 DN 10/15 DN 15/25 DN 25/40 DN 40/50 DN 50/80 DN 50/100

ANSI B 16.5 150 lb ½” ¾”,1 1”,1 ½“ 1½”,2“ 2”,3“ 3”,4“

Sanitary Tri-Clamp ½” ¾” 1½” 2” 2” on request

Process parameters

Temperature -25°C to Tmax

Size T * T+ ** Z Z+

10 G 100 G 300 G 800 G

1500 G 3000 G

*Temperature

Density 0.5 – 2 g/cm3 or 30 to 125 lb/ft Nominal pressure Pressure drop 0.9 0.5 0.7 0.5 0.7 0.3

complete flow

Ambient temperature

in operation Standard – 30 to + 60°C or – 20 to + 140°F

Hazardous-duty – 20 to + 55°C or – 4 to + 131°F

63 bar or ≤ 910 psig, dependent on connection

≤

-13°F to Tmax, See Table

Material Type

130°C 130°C 130°C 130°C 130°C 130°C

of 150°Con request

130°C 130°C 130°C 130°C 130°C 130°C

below

100°C 100°C 100°C 100°C 100°C

for Tmax

100°C 100°C 100°C 100°C 100°C

in storage – 50 to + 85°C or – 58 to + 185°F

Secondary containment housing Protection category

Hazardous-duty version (complete f/meter) European Standard EEx de or d [ib] IIC T6 ... T3, PTB-No. Ex-94.C.2054 X, Ex-97.D.2194 X

Factory Mutual (FM) Class I, Div 1 and Div 2

Materials

Wetted parts Secondary containment housing

Flanges

Special versions

IEC 529/EN 60 529 IP 67, equivalent to NEMA 6 (complete flow meter)

63 bar / 910 psig, standard

and Ex-97.D.2195 X

titanium alloy, grade 9, ASTM B 338-91 / Zirconium stainless steel 1.4301/1.4306 (AISI 304/304L)

3000 G: Powder coated steel ASTM 106 B stainless steel 1.4301/1.4306, 1.4401/1.4404 (AISI 304’304L or 316/316L)

Steam/ liquid heating, heating medium temp. max.150°C/ 302°F, max. 5 bar/72 psig food approved version 3A or EHEDG

10.3 MFC 085 Signal Converter

Measured quantities and units

Mass flowrate Total mass (or total volume)

Density Volumetric flowrate Temperature Option

Programmable functions

Current output

Function

Current 0 - 20 mA or 4 - 20 mA Load Linearity

Pulse output

Function

Pulse rate Amplitude Load rating Extern al volt ag e

Status output

Functi on s tat us , li mi t val u e, directi on id en tification Voltage Load rating

Control input

Function

Control signals high: 4 - 24 V

g, kg, t, oz, lb g, kg, t, oz, lb (or cm g, kg, t

per

specific gravity, referred density, fixed density

, dm3, liter, m3, in3, ft3, imp. o r US gall

C or °F

second, minute, hour, day

per

, dm3, m3, liter, in3, ft3, imp. or US gallons)

, dm3, m3, liter or oz, lb

sugar concentration in °Brix or Baumé, mass or volume concentration, caustic soda concentrate

display format, physical units, current, pulse and status outputs, lowflow cutoff, time constant, primary constant, lower/upper range limits, forward/reverse measurement, standby, zero and reset of total mass

For input/output Connections, see table below.

All oper ati ng data adjustable

–

galvan ically isol at ed onl y from mains, C P U, et c . n ot f r om ot h er

–

outputs

500 ohms

≤

0.2% of meas ured value in range of 2 - 20 mA

≤

0.02% of full scale defl ection in r ang e of 0 - 2 mA

≤

If fitted see “inputs and outputs / versions” above

all operating data adjustabl e

–

open collector

–

galvan ically isol at ed onl y from mains, C P U, et c . n ot f r om ot h er

–

outputs up to 1300 H z max. 24 V

150 mA

≤

24 V DC

≤

If fitted

all operating data adjustabl e

–

galvan ically isol at ed onl y from mains, C P U, et c . n ot f r om ot h er

–

outputs

max. 24 V, also suitabl e as voltage sour ce for the pulse output short-circuit-proof. Voltage limiting initiated at > 20 mA.

If fitted

progr am m abl e f or t otal izer res et, z er o poi nt, status

–

acknowledgement or changeover standby ←→ measuring

mode

galvanically isolated via optocoupler

–

active “high” or “low”

–

low: 0 - 2 V input current: 0.2 mA

in3, ft3, imp. or US gal l

per

sec, min, h our , d ay

per

Current

Outputs

OPTION

STD

1 21113331

OPTION

2 CRNT

OPTION

Current

& RS485

OPTION

4 1

Current

Modbus

OPTION

5 1

Current

input,Du al phase

pulse

OPTION

6 1

3 CRNT

PULSE

OPTION

3 CRNT

CONTR

INPUT

OPTION

3 CRNT

& I

CONTR

INPUT

OPTION

3 CRNT

STATUS

Pulse

Outputs

Status

Outputs

Binary Inputs

TERMINALS

4.2

4.1 4

1 00011000

1 10010100

Alarm Alarm +5V +5V Pulse B Pulse Input Alarm +5V

Pulse Current 2 TX / RX TX / RX Pulse A Current3Current3Current3TX / RX

Input Input TX /RX TX /RX Input Current2Current2Current2TX /RX

Current Current 1 Current1Current1Current1Current1Current1Current1Current

Common Common Common Common Common Common Common Common Common

(passive)

000001

(passive)

Low-flow cut-off Time constant for flow Power supply

Standard 2 30 V AC

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

Power consumption AC : 18 VA DC : 10 W

Operator control / interfaces

Keypad 3 keys → ↵ Local display Type 3-line, il luminated LCD display

Functi on actual meas ured value, forw ard, r everse or sum t ot ali z er

Meas quantities. and units Plain text l ang u age

Magnetic sensors MP same function as the 3 keys, operation by means of hand-held

Communications options

RS 232 adap t or and C onf ig. Softwar e HART-System RS 485/ Modbus Serial communications For detailed protocol information please contact Krohne

Housing material

0 - 10% of nominal full-scale range

0.5 - 20 seconds (optional ly: 0.2 - 20 seconds)

10%

200 V AC 115 V AC 100 V AC

24 V DC, ± 30%

1st (top) line: 8 character, 7 segments for numerals and signs 2nd (middle) line: 10-chara cter, 14 segments for text s 3rd (bott om ) line: 6 markers ▼ for status identification

(7 characters), eac h c an be s et for c ont i nu ous or cyclic displ ay, an d st at us ou tp ut

see page 89 “Measured quantities and units” English, German French

bar magnet without opening the housing

Operating via a MSDos PC. For further information see Product Guide 6 “Communications techniques”. Via handheld communicator. For further information see Product Guide 6 “Communications techniques”.

die-cast aluminium with polyurethane finish

10% 48 - 63 Hz

10%

↑

100

KROHNE G-MFM4085 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual