YOKOGAWA Admag AXF User's Manual

Technical Information

Combining ADMAG AXF with Existing Remote Type Magnetic Flowmeters

TI 01E20A02-01E

Company Confidential

Contents

Introduction .................................................................................................................. 2

1. Combining AXF Flowtubes with Existing Converters ...................................... 3

1.1 Combination between AM11 and AXF Flowtubes............................................. 3

1.2 Combination between AE14 and AXF Flowtubes ............................................. 3

1.3 Combination between YMA11 and AXF Flowtubes........................................... 4

2. Combining AXFA Converters with Existing Flowtubes .................................... 7

2.1 Combination between AM Flowtubes and AXFA11........................................... 8

(Combination between AM Flowtubes and AXFA14)

2.2 Combination between AE Flowtubes and AXFA14 ........................................... 9

(Combination between AE Flowtubes and AXFA11)

2.3 Combination between SE Flowtubes and AXFA11 ......................................... 10

2.4 Combination between YM Flowtubes and AXFA11......................................... 11

2.5 Combination between Flowtubes of Other Manufacturers and AXFA11 ......... 13

3. How to Check the Performance of Existing Flowtubes.................................. 16

4. How to Obtain Meter Factor using the Customer's Flow Line ....................... 17

4.1 How to Perform Flow Calibration in Combination with AXFA11 using the

Customer's Facilities ....................................................................................... 17

4.2 How to Obtain Meter Factor by Incorporating the Indicated Flow Rate of the

Existing Converter. .......................................................................................... 18

4.3 How to Obtain Meter Factor According to the Inferred Flow Rates Such as

Valve Openings or Pump Rpm ........................................................................ 19

5. Compatibility with AXFA11 and AXFA14 ....................................................... 20

Appendix. 1 Electrical Connection............................................................................ 21

(1)Combination AXFA11 and FOXBORO 1800 Series ........................................ 22

(2) Combination AXFA11 and FOXBORO 2800 Series ........................................ 24

(3) Combination AXFA11 and F&P 10D1418 Series ............................................ 26

(4) Combination AXFA11 and F&P 10D1419 Series ............................................ 28

(5) Combination AXFA11 and F&P 10D1430 Series ............................................ 29

(6) Combination AXFA11 and F&P 10D1435 (MAGX) Series (6” to 48”).............. 31

(7) Combination AXFA11 and F&P 10D1475 (MINI MAGX) Series...................... 32

(8) Combination AXFA11 and BROOKS 7000 Series .......................................... 33

(9) Combination AXFA11 and BROOKS 7100 Series .......................................... 34

(10) Combination AXFA11 and BROOKS 7400 Series .......................................... 35

(11) Combination AXFA11 and BROOKS 7500 Series .......................................... 36

(12) Combination AXFA11 and KROHNE ALTFLUX X-1000, M900 Series ........... 37

(13) Combination AXFA11 and ROSEMOUNT 8701.............................................. 39

(14) Combination AXFA11 and TAYLOR 1100 Series ............................................ 40

Yokogawa Electric Corporation 2-9-32 Nakacho, Musashino-shi, Tokyo 180, Japan Tel.: 81-422-52-4443 Fax.: 81-422-52-2018

TI 01E20A02-01E

©Copyright Aug. 2004

1st Edition Aug. 2004

Introduction

This technical information describes how to combine ADMAG AXF magnetic flowmeters with existing remote type flowtubes or con verters. A magnetic flo wmeter is used by obtaining a meter factor , which is a calibration coefficient unique to a flo wtube, according to flo w calibration and then by setting the meter factor to a conv erter. Values of meter factors depend on the models of converters to be combined. Therefore, in order to measure flow rates with high accuracy, flow calibration must be re-performed at the factory. If this is not possible, refer to additional errors and meter factor conversion coefficients described in this technical inf ormation.

There are various precautions for combinations with e xisting instruments. In some cases , such instruments cannot be combined or require settings by Yokogaw a's service personnel. Read this technical information carefully and take appropriate measures.

Possible Combinations between Existing Remote Type Flowtubes/Con verters and ADMAG AXF Series

Converters

Flowtubes

AXFA14 AM11AXFA11

Section 1.1

AE14 YMA11SE14

Section 1.2—

Not possible

Section 1.3 Not possibleAXF Flowtube

Converters of Other

Manufacturers

AM Flowtube

AE Flowtube

SE Flowtube

YM Flowtube

Flowtubes of Other

Manufacturers

Section 2.1

See Note in

Section 2.2 Section 2.3

Section 2.4 Not possible

Note: Even if a flowtube is an e xplosion-proof type, the e xplosion-proof capability is not satisfied if the flo wtube is

combined with a different model. If the explosion-proof capability is required, the flowtube must be used in the combination specified for the same model.

See Note in

Section 2.1 Section 2.2

Not possible

Not possibleSection 2.5

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1. Combining AXF Flowtubes with Existing Con verters

Note 1: For combinations between an existing converter and an AXF flowtube, only AM11, AE14 and YMA11 can be

used. Other conv erters (SE14 and converters of other companies) cannot be combined with AXF flowtubes.

Note 2: Even if flow calibration is redone, functions and capabilities are equivalent to those of existing instruments. The

functions unique to AXF such as enhanced dual frequency excitation cannot be used.

1.1 Combination between AM11 and AXF Flowtubes

1.1.1 When newly pur chasing AXF flowtubes

• Issue a Tokuchu request for purchasing AXF flowtubes. In this case, the enhanced dual frequency excitation function (option codes /HF1 and /HF2) cannot be selected. In the Tokuchu request, be sure to enter a model name of an existing converter (a full model and suffix code) and indicate clearly that an AXF flowtube will be combined with this converter.

• In addition to the regular flow calibration with AXFA converters, flow calibration in combination with AM11 is performed and then both meter factors are inscribed on the data plate. Set the meter factor for AM11 to AM11 before operation. The accuracy in this case will be the same as AM.

Note: Meter factors for combinations diff er , depending on whether an e xisting con v erter is AM11-AS/DH/DB

or AM11-DL. Theref ore, be sure to state a full model and suffix code clearly in a Tokuchu request.

1.1.2 When using existing or stock AXF flo wtubes

 Combination with AM11-AS, DH or DB

• It is recommended that flow calibration be redone for the AXF flowtubes at Yokogawa's factory. The accuracy in this case will be the same as AM.

• If flow calibration cannot be redone at Yokogawa's factory, set the meter factors (both the low MF value and the high MF value) inscribed on AXF flowtubes to AM11 as they are. The accuracy for reference in this case will be approximately AM accuracy ⫾additional 0.5% for flowtubes for AXFA11 (model name: AXFxxxx-N) and approximately AM accuracy ⫾additional 1.5% for flowtubes for AXFA14 (model name: AXFxxxx-P).

 Combination with AM11-DL

• Flow calibration must be redone for the AXF flowtubes at Yokogawa's factory. The accuracy in this case will be the same as AM.

• If flow calibration cannot be redone at Yokogawa's factory, contact Yokogawa. Since meter factors differ substantially for combination with the DL-type, meter factors inscribed on the AXF flowtubes cannot be set for use as they are.

1.2 Combination between AE14 and AXF Flowtubes

Note: Sizes of the flowtubes which can be combined with AE14 are 2.5 mm (0.1 in.) to 400 mm (16 in.) only.

1.2.1 When newly pur chasing AXF flowtubes

• Issue a Tokuchu request for purchasing AXF flowtubes. In this case, the enhanced dual frequency excitation function (option codes /HF1 and /HF2) cannot be selected. In the Tokuchu request, be sure to indicate clearly that AXF flowtubes will be combined with AE14.

• In addition to the regular flow calibration with AXFA converters, flow calibration in combination with AE14 is performed and then both meter factors are inscribed on the data plate. Set the meter factor for AE14 to AE14 before operation. The accuracy in this case will be the same as AE.

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1.2.2 When using existing or stock AXF flo wtubes

• It is recommended that flow calibration be redone for the AXF flowtubes at Yokogawa's factory. The accuracy in this case will be the same as AE.

• If flow calibration cannot be redone at Yokogawa's factory, set the meter factors (both the low MF value and the high MF value) inscribed on AXF flowtubes to AE14 as they are. The accuracy for reference in this case will be approximately AE accuracy ⫾addi- tional 0.5% for flowtubes for AXFA14 (model name: AXFxxxx-P) and approximately AE accuracy ⫾additional 1.5% for flowtubes for AXFA11 (model name: AXFxxxx-N).

1.3 Combination between YMA11 and AXF Flowtubes

1.3.1 When newly pur chasing AXF flowtubes

• Issue a Tokuchu request for purchasing AXF flowtubes. In this case, the enhanced dual frequency excitation function (option codes /HF1 and /HF2) cannot be selected. In the Tokuchu request, be sure to indicate clearly that AXF flowtubes will be combined with existing YMA11 converters.

• In addition to the regular flow calibration with AXFA converters, flow calibration in combination with YMA11 is performed and then both meter factors are inscribed on the data plate. Set the meter factor for YMA11 and an excitation current value to YMA11 before operation. Obtain a relevant excitation current value from Tables 1.3.1 to 1.3.3. The accuracy in this case will be the same as YM.

1.3.2 When using existing or stock AXF flo wtubes

• It is recommended that flow calibration be redone for the AXF flowtubes at Yokogawa's factory. The accuracy in this case will be the same as YM.

• If flow calibration cannot be redone at Yokogawa's factory and if a flowtube for AXFA11 (AXFxxxx-N) is used, obtain a necessary excitation current value and an approximate meter factor value from Tables 1.3.1 to 1.3.3, and combine the flowtube with YMA11. The meter factor for YMA11 is obtained by multiplying the low meter factor (the meter factor inscribed on the "METER FACTOR L" section of the data plate) of the AXF flowtube with a coefficient in Tables 1.3.1 to 1.3.3. Although the accuracy in this case is not guaranteed, it will be approximately YM accuracy ⫾additional 2% as a reference. Also, the excitation current value needs to be set to YMA11.

• Flowtubes for AXFA14 (AXFxxxx-P) cannot be combined with YMA11 without redoing flow calibration.

• AXF flowtubes with the size of 32 mm (1.25 in.), 65 mm (2.5 in.) or 125 mm (5 in.) cannot be combined with YMA11.

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Table 1.3.1 Combination between AXF Ceramic Lining Flowtubes and YMA11

Meter factor for YMA11 = Low meter factor for AXF flowtube ⫻ coefficient in the table below

Size of AXF

Flowtube [mm (in.)]

2.5 (0.1) 5 (0.2)

10 (0.4) 15 (0.5) 25 (1.0) 40 (1.5) 50 (2.0)

80 (3.0) 100 (4.0) 150 (6.0) 200 (8.0)

YMA11 Excitation

Current Setting

Value (A)

0.12

0.13

0.22

0.14

0.13

0.12

0.16

0.14

0.11

0.12

Coefficient in 1/8 Mode Excitation Coefficient in 1/2 Mode Excitation

60 Hz Area 50 Hz Area50 Hz Area 60 Hz Area

1.0304

0.9771

0.6542

0.9589

0.9756

0.9723

0.9697

0.9701

0.9619

0.9672

0.9666

1.0313

0.9757

0.9542

0.9584

0.976

0.9724

0.9691

0.9688

0.9602

0.9661

1.0232

0.9760

0.95

0.9589

0.9748

0.9732

0.9683

0.9673

0.9567

0.9639

0.9596

Table 1.3.2 Combination between AXF PF A Lining Flowtubes and YMA11

Meter factor for YMA11 = Low meter factor for AXF flowtube ⫻ coefficient in the table below

Size of AXF

Flowtube [mm (in.)]

2.5 (0.1) 5 (0.2)

10 (0.4) 15 (0.5) 25 (1.0) 40 (1.5) 50 (2.0)

80 (3.0) 100 (4.0) 150 (6.0) 200 (8.0)

250 (10.0) 300 (12.0) 350 (14.0) 400 (16.0)

For " * " sections in the table, contact Yok ogaw a.

YMA11 Excitation

Current Setting

Value (A)

0.12

0.14

0.23

0.15

0.13

0.17

0.14

0.11

0.12

0.5

Coefficient in 1/8 Mode Excitation Coefficient in 1/2 Mode Excitation

60 Hz Area 50 Hz Area50 Hz Area 60 Hz Area

1.0127

0.9786

0.94

0.9423

0.9755

0.9727

0.9728

0.9741

0.9635

0.9796

0.9767

0.9924

0.9864 *

0.9844

1.0162

0.9788

0.9403

0.9419

0.976

0.9719

0.9725

0.9726

0.9625

0.9779

0.9759

0.9925

0.9855 *

0.9841

1.0092

0.9763

0.9351

0.9398

0.9746

0.9716

0.9715

0.9701

0.9562

0.9679

0.9756

0.9595

0.9435 *

0.9367

1.0205

0.9730

0.9487

0.9583

0.9746

0.9717

0.9675

0.9658

0.9546

0.9603

0.9550

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1.006

0.975

0.9335

0.9399

0.9747

0.9708

0.9705

0.9674

0.9526

0.9613

0.9468

0.9483

0.9265 *

0.9193

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Table 1.3.3 Combination between AXF P ol yurethane Lining Flowtubes and YMA11

Meter factor for YMA11 = Low meter factor for AXF flowtube ⫻ coefficient in the table below

Size of AXF

Flowtube [mm (in.)]

25 (1.0) 40 (1.5) 50 (2.0)

80 (3.0) 100 (4.0) 150 (6.0) 200 (8.0)

For " * " sections in the table, contact Yok ogawa.

YMA11 Excitation

Current Setting

Value (A)

0.2 * *

0.23

0.2

0.15

0.17

Coefficient in 1/8 Mode Excitation Coefficient in 1/2 Mode Excitation

0.9841 * *

0.9836

0.9562

0.9845

0.9818

60 Hz Area 50 Hz Area50 Hz Area 60 Hz Area

0.9835 * *

0.9821

0.9553

0.9827

0.9802

0.9840 * *

0.972

0.9491

0.9742

0.9621

0.9838 * *

0.9701

0.9452

0.9684

0.9519

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2. Combining AXF A Con verters with Existing Flowtubes

Note: In some cases, these instruments cannot be combined. Ev en if they can be combined, it is strongly recommended

to redo flow calibration if existing flowtubes are Yokoga w a's products. The accuracy in this case will be the standard accuracy of the existing flowtubes. If flow calibration cannot be redone or if AXFA conv erters need to be combined with flowtubes of other manufacturers, meter f actors based on calculations or on-site actual flow tests shall be incorporated. Note that the accuracy is not guaranteed in this case. It may also not be possible to provide additional errors for reference.

Outline of procedures

• For details, see Sections 2.1 to 2.5.

(1) Continuity and insulation check of excitation coils

Flowtube performance check

(2) Continuity and insulation check of signal lines (See Chapter 3 "How to Check the Performance of Existing Flowtubes.")

Obtain a meter factor:

(1) Obtain a meter factor by referring to Sections 2.1 to 2.5 and Chapter 4. (2) For redoing flow calibration at the factory, request Yokogawa.

Wiring

AXFA parameter setting

Automatic zero adjustment

End

(1) For signal cables, use dedicated signal cable AXFC. Note that AM011 cable

and YM011 cable can be used if insulation and continuity are not deteriorated.

(2) Connect flowtubes and converters.

(1) For parameter setting, see Sections 2.1 to 2.5 and the user's manual for AXFA.

Perform the automatic zero adjustment by referring to the user's manual for AXFA.

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2.1 Combination between AM Flowtubes and AXFA11

2.1.1 Flowtube performance c heck

Based on Chapter 3 "How to Check the Performance of Existing Flowtubes," check that an existing flowtube is not damaged.

2.1.2 Obtaining the meter factors

Obtain the meter factors by either of the following two methods a) or b) depending on the situation:

a) By obtaining the meter factors by redoing flow calibration at Yokogawa's

factory

The accuracy in this case will be the same as AM.

b) By using the meter factors of AM

• For the sizes from 2.5 mm (0.1 in.) to 1000 mm (40 in.) and the sizes from 1100

mm (44 in.) to 2600 mm (104 in.) style A or style B (model code: AM5xxx.....*A

or *B), the meter factors inscribed on AM flowtubes can be set to AXFA11 as they are. The accuracy for reference in this case will be approximately AM accuracy ⫾additional 0.5%.

• If the existing flowtube is 1100 mm (44 in.) to 2600 mm (104 in.) style C (model

code: AM5xxx.....*C), the AM's meter factor cannot be set to AXFA11 as it is,

because the meter factor in combination with AXFA11 differs substantially. Contact Yokogawa for how to deal with such situations.

2.1.3 Wiring

Connect the AM flowtube with AXFA11. The wiring is the same as in the case of connecting AXF flowtubes with AXFA11.

2.1.4 Parameter setting

Set the following parameters to AXFA11:

• Select "ADMAG" in the parameter "C30: Select Flow Tube." Flowtubes with the size of 400 mm (16 in.) or smaller are driven with dual frequency excitation, while those with the size of 500 mm (20 in.) or larger are driven with pulsed DC calculation. The enhanced dual frequency excitation function cannot be used.

• Set both "C21: Low MF" and "C22: High MF" as meter factors for flowtubes with the sizes from 2.5 mm (0.1 in.) to 400 mm (16 in.). Set "C21: Low MF" as the meter factor for flowtubes with the sizes from 500 mm (20 in.) to 2600 (104 in.) mm, and set 1.0000 to "C22: High MF."

• For the sizes from 1100 mm (44 in.) to 2600 mm (104 in.), select "No" in the parameter "J30: Power Synch" and set "49.00" to "J31: Power Frequency."

• For details on setting parameters other than the above, follow the user's manual for AXFA11.

2.1.5 Zero adjustment

Perform the automatic zero adjustment according to the user's manual for AXFA11.

End

Note: Combinations between AM flo wtubes and AXFA14 can also be operated using the same

procedure. How ev er, in "b) By using the meter factors of AM" of Section 2.1.2 "Obtaining the meter factors," the accuracy f or ref erence will be appro ximately AM accuracy ⫾additional 1.5%. Moreover , in the case of the siz es from 250 mm (10 in.) to 400 mm (16 in.), output fluctuations may become larger than in the case of operations using AXFA11 due to EMF differences. Note that combinations between AM flowtubes and AXFA14 are only possible for the sizes from

2.5 mm (0.1 in.) to 400 mm (16 in.). There is no need to set the parameter "C30: Select Flo w Tube" (there is no parameter "C30" in AXFA14).

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2.2 Combination between AE Flowtubes and AXFA14

2.2.1 Flowtube performance chec k

Based on Chapter 3 "How to Check the Performance of Existing Flowtubes," check that an existing flowtube is not damaged.

2.2.2 Obtaining the meter factors

Obtain the meter factors by either of the following two methods a) or b) depending on the situation:

a) By obtaining the meter factors by redoing flow calibration at Yokogawa's

factory

The accuracy in this case will be the same as AE.

b) By using the meter factors of AE

The meter factors inscribed on AE flowtubes can be set to AXFA14 as they are. The accuracy for reference in this case will be approximately AE accuracy

⫾additional 0.5%.

2.2.3 Wiring

Connect the AE flowtube with AXFA14. The wiring is the same as in the case of connecting AXF flowtubes with AXFA14.

2.2.4 Parameter setting

Set the following parameters to AXFA14:

• Set both "C21: Low MF" and "C22: High MF" as meter factors.

• For details on setting parameters other than the above, follow the user's manual for AXFA14.

Note: AE flowtubes are driv en with dual frequency e xcitation. The enhanced dual frequency e xcitation

function cannot be used.

2.2.5 Zero adjustment

Perform the automatic zero adjustment according to the user's manual for AXFA14.

End

Note: Combinations between AE flo wtubes and AXFA11 can also be operated using the same

procedure. Ho we v er , in "b) By using the meter factors of AE" of Section 2.2.2 "Obtaining the meter factors," the accuracy f or ref erence will be approximately AE accur acy ⫾additional 1.5%. Select "ADMAG AE" in the parameter "C30: Select Flo w Tube" for AXF A11.

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2.3 Combination between SE Flowtubes and AXFA11

2.3.1 Flowtube performance c heck

Based on Chapter 3 "How to Check the Performance of Existing Flowtubes," check that an existing flowtube is not damaged.

2.3.2 Obtaining the meter factor

Obtain the meter factor by either of the following two methods a) or b) depending on the situation:

a) By obtaining the meter factor by redoing flow calibration at Yokogawa's

factory

The accuracy in this case will be the same as SE.

b) By obtaining meter factor using the customer's flow line according to

Chapter 4

Follow Section 2.3.3 "Wiring" and Section 2.3.4 "Parameter setting" before obtaining meter factor according to the actual flow test.

2.3.3 Wiring

Connect the SE flowtube with AXFA11. The wiring is the same as in the case of connecting AXF flowtubes with AXFA11.

2.3.4 Parameter setting

Set the following parameters to AXFA11:

• Select "ADMAG SE" in the parameter "C30: Select Flow Tube." SE Flowtubes are driven with pulsed DC calculation.

• Set the obtained meter factor to "C21: Low MF." Set 1.0000 to "C22: High MF."

• For details on setting parameters other than the above, follow the user's manual for AXFA11.

2.3.5 Zero adjustment

Perform the automatic zero adjustment according to the user's manual for AXFA11.

End

Note 1: Meter factors of SE flowtubes cannot be used for setting as they are, as meter factors diff er substantially in the

combinations between SE flowtubes and AXF A11.

Note 2: AXFA14 cannot be combined with SE flowtubes, as it cannot drive the SE flowtubes .

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2.4 Combination between YM Flowtubes and AXFA11

2.4.1 Flowtube performance chec k

Based on Chapter 3 "How to Check the Performance of Existing Flowtubes," check that an existing flowtube is not damaged.

2.4.2 Obtaining the meter factor

Obtain the meter factor by either one of the following three methods a), b) and c), depending on the situation:

a) By obtaining the meter factor by redoing flow calibration at Yokogawa's

factory

The accuracy in this case will be the same as YM.

b) By calculating from the meter factor of YM

The accuracy for reference will be approximately YM accuracy (1) Read the meter factor in 1/8 mode (standard mode) and 50 Hz from the data

plate of a YEWMAG flowtube.

(2) The meter factor is obtained by multiplying the YM meter factor in 1/8 mode

and 50 Hz by a coefficient determined for each size shown in Table 2.4 "Meter Factor Calculation Coefficient Table".

Example:

c) By obtaining meter factor using the customer's flow line according to

Chapter 4

Follow Section 2.4.3 "Wiring" and Section 2.4.4 "Parameter setting" before obtaining meter factor according to the actual flow test.

YM102 1/8 mode, 50 Hz Meter factor: 0.2800

50 Hz area:

Meter factor: 0.2800 ⫻ 1.0825 = 0.3031

60 Hz area:

Meter factor: 0.2800 ⫻ 1.0820 = 0.3030

⫾additional 1%.

2.4.3 Wiring

Connect the YM flowtube with AXFA11. The wiring is the same as in the case of connecting AXF flowtubes with AXFA11. Note that, if BARD is used for a YM explosion-proof type flowtube, remove the BARD and use the flowtube as a non-explosion-proof type product. This combination cannot satisfy the requirements of explosion-proof capabilities.

2.4.4 Parameter setting

Set the following parameters to AXFA11:

• Select "YEWMAG" in the parameter "C30: Select Flow Tube."

• Check the software revision number of AXFA11 which is indicated in the parameter "J50: Software Rev No."

If the revision number is "R1.05" or "R1.08":

Select "Low" in the service parameter (not disclosed) "U15: 4-20mA Sel." Be sure to contact Yokogawa for the service parameter setting. Pulsed DC calculations apply to all sizes.

If the revision number is other than "R1.05" or "R1.08":

There is no need to set "U15: 4-20mA Sel." Pulsed DC calculations automatically apply to all sizes by selecting "YEWMAG" in the parameter "C30: Select Flow Tube" as above.

• Set the obtained meter factor to "C21: Low MF." Set 1.0000 to "C22: High MF."

• For the sizes from 1100 mm (44 in.) to 2600 mm (104 in.), select "No" in the parameter "J30: Power Synch" and set "49.00" to "J31: Power Frequency."

• For details on setting parameters other than the above, follow the user's manual for AXFA11.

(To the next page)

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2.4.5 Zero adjustment

Perform the automatic zero adjustment according to the AXFA11 user's manual.

End

Note: AXFA14 cannot be combined with YM flowtubes , as it cannot oper ate the YM flowtubes.

Table 2.4 List of Meter Factor Calculation Coefficients

50 Hz Area 60 Hz Area YM102 YM104 YM106 YM115 YM202 YM204 YM205 YM208 YM210 YM315 YM320 YM325 YM330 YM335 YM340 YM405 YM406 YM407 YM408 YM409

1.0825

1.0541

1.0417

1.1184

1.0633

1.0181

1.0124

1.0120

1.0124

1.0095

1.0053

1.0185

1.0251

1.0250

1.0506

1.0180

1.0195

1.0224

1.0252

1.0198

1.0820

1.0545

1.0448

1.1185

1.0633

1.0170

1.0123

1.0122

1.0152

1.0098

1.0065

1.0170

1.0249

1.0263

1.0537

1.0179

1.0201

1.0217

1.0254

1.0206

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2.5 Combination between Flowtubes of Other Manufacturer s and AXFA11

Note: It may not be possible to operate some flowtubes of other manuf acturers due to the diff erence in magnetic circuits .

Although the coil resistance of a flowtube must be 240 ⍀ or less, it ma y not be possib le to operate the flowtube even if the resistance is 240 ⍀ or less. Especially, if the excitation current of an existing model is designed to be

0.26 mA or less, it is more likely that the flowtube cannot be driven by AXFA11.

2.5.1 Flowtube performance chec k

Based on Chapter 3 "How to Check the Performance of Existing Flowtubes," check that an existing flowtube is not damaged.

2.5.2 Obtaining the meter factor

Obtain the meter factor by one of the following three methods a), b) and c), depending on the situation:

a) By obtaining meter factor using the customer's flow line according to

Chapter 4

Follow Section 2.5.3 "wiring" and Section 2.5.4 "Parameter setting" before obtaining meter factor according to the actual flow test.

b) By obtaining meter factor through calculation

The calculated meter factor is an approximation. Calculations must be performed when it is difficult to obtain a meter factor according to the actual flow test. Accuracy for reference cannot be provided.

Driving methods of existing flowtubes

(Known) Model Name

FOXBORO 1800 and 2800 series

Reference voltage method

Flowtube inscribed with C/F/P Flowtube inscribed with

generated EMF

Method

* FOXBORO 1800 and 2800 series have two types: C/F/P is inscribed on one

type, while the generated EMF is inscribed on the other. Check the types shown in the data plate. Both C/F/P and the generated EMF may be inscribed on some models. In this case, use C/F/P for calculation.

b.1) Reference voltage method

Reference voltage ("Reference.v") is inscribed on the data plate or CP unit (open the terminal box cover). Calculate the meter factor using the reference voltage:

Meter factor for FOXBORO 1800 and 2800 series =

Reference voltage (v) 5 ⫻ excitation current

Relevant

Section

b.1)

b.2) b.3)

T06.EPS

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