Yokogawa RAKD User Manual

User´s

Model RAKD

Manual

IM 01R01B30-00E-E

Small Metal ROTAMETER

Rota Yokogawa GmbH & Co. KG Rheinstr. 8 D-79664 Wehr Germany

IM 01R01B30-00E-E

5th edition, January 2013 (Rü)

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Contents

1. Introduction ......................................................................................... 1-1

1.1 ATEX Documentation ......................................................................................1-3

1.2 General description .........................................................................................1-4

1.3 Principle of measurement .............................................................................. 1-4

1.4 Overview ........................................................................................................... 1-5

2. Precautions .........................................................................................2-1

2.1 Transportation and Storage ...........................................................................2-1

2.2 Installation .......................................................................................................2-1

3. Installation ..........................................................................................3-1

3.1 Installation in the pipeline .............................................................................3-1

3.2 Wiring ..............................................................................................................3-1

3.2.1 Connecting diagrams .......................................................................................... 3-1

3.2.2 Conductor connection with Quickon ............................................................... 3-4

3.2.3 Conductor M12 connection (Option /A29 or /A30) ........................................ 3-6

4. Start of operation ...............................................................................4-1

4.1 Hints on ow rate measurement ...................................................................4-1

4.2 Pulsation and pressure shock .......................................................................4-1

4.3 Start of operation of electronic transmitter .................................................4-1

Limit switches (Option /K1 to /K10) .............................................................................5-1

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Service .......................................................................................................... 6-1

6.1 Maintenance ....................................................................................................6-1

6.1.1 Function test ......................................................................................................... 6-1

6.1.2 Measuring tube, oat ........................................................................................... 6-1

6.1.3 Explosion drawings ............................................................................................. 6-2

6.1.4 Electronic transmitter .......................................................................................... 6-3

6.1.5 Exchange of scale ................................................................................................ 6-3

6.1.6 Exchange of indicator .......................................................................................... 6-3

6.1.7 Troubleshooting .................................................................................................... 6-4

6.2 Template for sending back to service ..........................................................6-5

7. Technical Data .....................................................................................7-1

7.1 RAKD Type-, Suffix-codes and Options ......................................................... 7- 1

7.2 Standard Specications ..................................................................................7-6

7.3 Dimensions and weights .............................................................................. 7-11

7.4 Temperature curves ...................................................................................... 7-15

8. Explosion-protected Type Instruments ............................................8-1

8.1 General .............................................................................................................8-1

8.2 Intrinsically safe ATEX certied RAKD (/KS1) .............................................8-2

8.2.1 Technical data ...................................................................................................... 8-2

8.2.2 Installation ............................................................................................................ 8-4

8.3 Intrinsically safe IECEx certied RAKD (/ES1) ............................................8-5

8.3.1 Technical data ...................................................................................................... 8-5

8.3.2 Installation ............................................................................................................ 8-7

8.4 Non incendive RAKD for Category 3 (ATEX) (/KN1) ...................................8-8

8.5 Dust proofed limit switches (ATEX) (/KS2) ..................................................8-8

8.6 Intrinsically safe "ic" RAKD for Category 3G (ATEX /IECEx) (/KS3, /ES3) 8-9

8.7 Intrinsically safe FM / CSA (USA + Canada) components (/FS1, /CS1) ............8-10

8.7.1 Limit switches option /K1 ... /K10 (/FS1 for USA) ............................................ 8-10

8.7.2 Limit switches option /K1 ... /K10 (/CS1 for Canada) ...................................... 8-10

8.8 Intrinsically safe NEPSI (China) certied RAKD (/NS1) ......................................8-16

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APPENDIX 1. Safety Instrumented Systems Installation .................. A1-1

A1.1 Scope and Purpose ................................................................................... A1-1

A1.2 Using RAKD for a SIS Application ........................................................... A1-1

A1.2.1 Safety Function ................................................................................................. A1-1

A1.2.2 Diagnostic Response Time .............................................................................. A1-2

A1.2.3 Setup .................................................................................................................. A1-2

A1.2.4 Proof Testing ..................................................................................................... A1-2

A1.2.5 Repair and replacement ................................................................................... A1-2

A1.2.6 Startup Time ...................................................................................................... A1-3

A1.2.7 Reliability data ..................................................................................................A1-3

A1.2.8 Lifetime limits ....................................................................................................A1-3

A1.2.9 Environmental limits .........................................................................................A1-3

iii

A1.2.10 Application limits ............................................................................................ A1-3

A1.3 Denitions and Abbreviations ................................................................... A1-4

A1.3.1 Denitions .........................................................................................................A1-4

A1.3.2 Abbreviations ....................................................................................................A1-4

A1.4 Assessment results .................................................................................... A1-5

A1.4.1 Safety related parameters ................................................................................ A1-5

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1. Introduction

WARNING

CAUTION

IMPORTANT

NOTE

WARNING

<1. INTRODUCTION>

1-1

Before use, read this manual thoroughly and familiarize yourself fully with the features, operations and handling of Rotameter RAKD to have the instrument deliver its full capabilities and to ensure its efficient and correct use.

Notices Regarding This Manual

• This manual should be passed to the end user.

• The contents of this manual are subject to

change without prior notice.

be reproduced or transmitted in any form or by any means without the written permission of Rota Yokogawa (hereinafter simply referred to as Yokogawa).

• This manual neither does warrant the

marketability of this instrument nor it does warrant that the instrument will suit a particular purpose of the user.

• Every effort has been made to ensure accuracy

in the contents of this manual. However, should any questions arise or errors come to your attention, please contact your nearest Yokogawa sales office that appears on the back of this manual or the sales representative from which you purchased the product.

• This manual is not intended for models with

custom specications.

• Revisions may not always be made in this manual in conjunction with changes in

specications, constructions and/or components if such changes are not deemed to interfere with the instrument’s functionality or perfor-mance.

Notices Regarding Safety and Modication

• For the protection and safety of personnel, the

instrument and the system comprising the instrument, be sure to follow the instructions on safety described in this manual when handling the product. If you handle the instrument in a manner contrary to these instructions, Yokogawa does not guarantee safety.

• If this instrument is used in a manner not

specied in this manual, the protection provided by this instrument may be impaired.

• As for explosion proof model, if you yourself

repair or modify the instrument and then fail to

return it to its original form, the explosion protected

construction of the instrument will be impaired, creating a hazardous condition. Be sure to consult Yokogawa for repairs and modications.

The following safety symbols and cautionary notes are used on the product and in this manual:

This symbol is used to indicate that a hazardous

condition will result which, if not avoided, may

lead to loss of life or serious injury. This manual describes how the operator should exercise care

to avoid such a risk..

This symbol is used to indicate that a hazardous

condition will result which, if not avoided, may

lead to minor injury or material damage. This

manual describes how the operator should

exercise care to avoid a risk of bodily injury or

damage to the instrument.

This symbol is used to call your attention to a

condition that must be observed in order to avoid the risk of damage to the instrument or system problems.

This symbol is used to call your attention to

information that should be referred to in order to know the operations and functions of the instrument.

For Safe Use of Rotameter RAMC

• If the process uid is harmful to personnel,

handle Rotameter RAKD carefully even after it has been removed from the process line for

maintenance or other purposes. Exercise extreme care to prevent the uid from coming into contact with human esh and to avoid

inhaling any residual gas.

• In case of Explosion proof type instrument,

further requirements and differences are

described in Chapter 8 " INSTRUCTIONS FOR

EXPLOSION PROTECTED RAKD”. The description in Chapter 8 is prior to other descriptions in this instruction manual.

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1-2

CAUTION

WARNING

IMPORTANT

<1. INTRODUCTION>

• When carrying Rotameter RAKD around, exercise extreme care to avoid dropping it accidentally and causing bodily injury.

Warranty

• The warranty of this instrument shall cover the

period noted on the quotation presented to the

Purchaser at the time of purchase. The Seller

shall repair the instrument free of charge when the failure occurred during the warranty period.

• All inquiries on instrument failure should be directed to the Seller’s sales representative from

whom you purchased the instrument or your

nearest sales office of the Seller.

• Should the instrument fail, contact the Seller

specifying the model and instrument number of the product in question. Be specic in describing details on the failure and the process in which the failure occurred. It will be helpful if schematic diagrams and/or records of data are attached to the failed instrument.

• Whether or not the failed instrument should be

repaired free of charge shall be left solely to the

discretion of the Seller as a result of an inspection by the Seller.

• When removing the instrument from hazardous processes, avoid contact with the uid and the

interior of the meter.

• In case of Explosion proof type instrument,

further requirements and differences are

described in Chapter 8 " INSTRUCTIONS FOR

EXPLOSION PROTECTED RAKD”. The

description in Chapter 8 is prior to other descriptions in this instruction manual..

Restriction on Use of Radio Transceiver

Although the transmitter has been designed to resist high frequency electrical noise, if a radio transceiver is used near the transmitter or it

external wiring, the transmitter may be affected by high frequency noise pickup. To test for such

effects, bring the transceiver in use slowly from a distance of several meters from the transmitter, and observe the measurement loop for noise

effects. Thereafter, always use the transceiver

outside the area affected by noise.

The Purchaser shall not be entitled to receive repair services from the Seller free of charge, even during the warranty period, if the malfunction or damage is due to:

• improper and/or inadequate maintenance of the

instrument in question by the Purchaser.

• handling, use or storage of the instrument in

question beyond the design and/or specications requirements.

• use of the instrument in question in a location

not conforming to the conditions specied in the

Seller’s General Specication or Instruction

Manual.

• retrotting and/or repair by an other party than the Seller or a party to whom the Seller has

entrusted repair services.

• improper relocation of the instrument in question

after delivery.

• reason of force measure such as res, earthquakes, storms/ oods, thunder/lightning, or

other reasons not attributable to the instrument in question.

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1.1 ATEX Documentation

This is only applicable to the countries in European Union.

<1. INTRODUCTION>

1-3

EST

SLO

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1-4

F10.EPS

<1. INTRODUCTION>

1.2 General description

This manual describes installation, operation and maintenance of the RAKD. Please read it carefully before

using this device.

Further, please note that customer features are not described in this manual. When modifying specications,

construction or parts, this manual is not necessarily revised unless it can be assumed that these changes will impair RAKD functions or performance. All units are thoroughly tested before shipping. Please check the received units visually to ensure that they have not been damaged during transport. In case of defects or questions please contact your nearest

YOKOGAWA service centre or sales office. Please describe any defect precisely and indicate model code as

well as com. no. number.

YOKOGAWA refuses any liability for units which have been repaired by the user without prior consent and do

not meet the specications as a consequence..

1.3 Principle of measurement

The RAKD is a Variable Area Flow Meter for volume and mass measurements of gases and liquids. A oat, whose movement is nearly independent of viscosity is guided concentrically in a specially shaped cone. The position of the oat is transferred magnetically to the indicator, which shows the measurement values by a pointer on a scale. The indicator can be equipped with limit switches and an electronic transmitter.

Fig. 1.1

All units are calibrated with water or air by the manufacturer. By adjusting the calibration values to the measured substance’s state of aggregation (density, viscosity), the ow rate scale for each measuring tube can be

determined.

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1.4 Overview

F11.EPS

Tube

Indicator

Pointer

Scale

Limit switch MIN below scale

Limit switch MAX below scale

Cable connection Quickon

100

l/h

II2G

Ui= 30V Ii= 100mA

KEMA 00ATEX 1037X Ex ia IIC T6 Transmitter

Li= 0.73mH Ci= 2.4nF

Pi= 0.75W

KEMA 00ATEX 1037X

see certificate for data

Ex ia IIC T6

Limit Switch: SC2-N0

F12.EPS

Flow scale

Ex-marking

Ex-data electronic transmitter

Limit switch Ex-data limit switch

Ex-marking

Made in Germany D-79660 Wehr

20 Grad C

1.1 bar abs.

Wasser 0,99831 g/cm 1 mPas

MS-Code: RAKD41-G6SS-33NNN-

Kom.Nr.: 200000/001

E80424/K1/KS1

Manufactured: 2009

Com. no..

Model code

Medium data

Flow unit

<1. INTRODUCTION>

1-5

Example for scale :

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1-6

<1. INTRODUCTION>

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<2. PRECAUTIONS>

50 55 60 65 70

100

200

Illustration of maximum allowable operation temperature depending on

ambient temperature for Rotameter type RAKD

Max. operation temperature [°C]

Ambient temperatur [°C]

75 80

125

150

175

225

250

275

Version without valve Version with valve

F21.EPS

2. Precautions

2.1 Transportation and Storage

Before transporting the unit, it is recommended to x the oat with a card-board strip in the same way as when shipped from factory. Prevent foreign objects from entering the tube (e.g. by covering openings). To protect the unit and especially the tube’s interior from soiling, store it only at clean and dry locations

2.2 Installation

Ambient temperature and humidity of the installation location must not exceed the specied ranges. Avoid

locations in corrosive environments. If such environments are unavoidable, ensure sufficient ventilation.

Although the RAKD features a very solid construction, the instrument should not be exposed to strong

vibration or impact stress.

Please note that the RAKD is magnetic sensing system can be inuenced by external inhomogeneous

magnetic elds (such as solenoid valves). Alternating magnetic elds (≥ 10Hz) as well as homogeneous,

static magnetic elds (in the area of the RAKD), like the geomagnetic eld have no inuence. Asymmetric

ferromagnetic bodies of considerable mass (e.g. steel girders) should be kept at a distance of at least 250 mm from the RAKD.

To avoid interference, the distance between two adjacent RAKDs must be at least 120 mm. Do not expose the unit to pressures higher than the indicated maximum operating pressure (refer to

specications) Make sure that wetted parts are resistant against the process medium.

Ambient- and process-temperature may exceed specied maximum values. Note the temperature curves in g. 2-1 and chapter 7 "Technical data". The Rotameter must be mounted vertically. The ow direction is upwards.

2-1

Fig. 2-1. For option /KS1or /KN1 (Ex-version) the maximum values for ambient and process temperature

according to the respective temperature class mentioned in g. 3-2 and tables 7-2 to 7-5 must

be regarded. The minimum ambient temperature is -25°C.

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2-2

<2. PRECAUTIONS>

Check movability of the oat (5)* by watching the pointer. The pointer should follow the movement of the oat. If this is not the case, oat and measuring tube (1;21) should be cleaned.

Check the movability of the pointer by careful moving it with your ngers and watching whether it responds to the scale value. If it does not work properly, the mechanical display unit (14) must be changed.

To avoid damage of the oat and of the stopper do not use magnetic valves. In the phase of start up increase the ow slowly to the desired ow rate. If a sudden rise of the pressure can not be avoided (with use of

magnetic valves) the ow must be limited to the maximum used value (e.g. by valve).

*: Position numbers are illustrated in the explosion drawings in chapter 6.

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<3. INSTALLATION>

Type T

without contact

Type T

with MIN contact

/K1 or /K 6

Type T

with MAX contact

/K2 or /K 7

Type T

with MIN/MAX

contact /

K3 or /K8

Type E

without contact

without pulse

Type E

with MIN contact

/K1 or /K 6

Type E

with MAX contact

/K2 or /K 7

Type E

with

pulse output

/CP

Quickon upper "T"

--- MIN contact --- MIN contact --- MIN contact MAX contact Puls output

Quickon lower "S"

--- --- MAX contact MAX contact Current output Current output Current output Current output

T31.EPS

3-1

3. Installation

3.1 Installation in the pipeline

The pipe has to be so stabilized that vibrations on the pipe are avoided. Additional recommendations can be

found in guideline VDI/VDE 3513 sheet 3.

If pollution of the metering tube may appear a bypass-pipe is recommended, which permits the removal (see.

chapter 6 “maintenance”) of the Rotameter for cleaning without interruption of the ow.

Before installing the Rotameter, make sure there are no parts of packing or securing inside the Rotameter. It has to be taken care at the connection of units with internal thread that no residues of the sealing compound

come into the tube (e.g. remains of the PTFE sealing compound).

To avoid stress in the connecting pipes, the connecting anges must be aligned in parallel and axial direction. Bolts and gaskets have to be selected according to the maximum operating pressure, the temperature range

and corrosion conditions. Centre gaskets and tighten nuts with a torque appropriate for the pressure range.

If contamination or soiling of the RAKD is to be expected, a bypass should be installed to allow the removal of the instrument without interruption of the ow. Please read also chapter 2.2. For further instructions on installation please refer to VDI/VDE3513.

In case of devices without valve but with process connection internal thread the oat shaft of tubes with cone 44 and bigger sizes may move into the range of the threaded joint. Keep attention not to bend the guide bar when screwing up the connection. The inner diameter of the connector must be at least 8 mm for cone sizes

44 - 51 resp. 10 mm for cone sizes 52 and 53.

To avoid oat bouncing in case of gas applications, attend to VDI/VDE 3515 sheet 3. For devices without valve use a throttle either in the inlet or outlet (to install at that side with the bigger volume). For installation of several instruments in parallel tubes take care that the distance between the middle axis is at least 120 mm to avoid magnetic inuence. The distance to other ferritic material should not be less than 60 mm. Take care that the strength of external magnetic elds is approximately 0 mT.

3.2 Wiring

3.2.1 Connecting diagrams

Please regard the drawings of this chapter.

RAKD with electronic transmitter or with limit switches have one or two Quickon connectors at the rear.

In the connecting diagrams he lower one is named "S" and the upper one "T". Not used connector positions are closed with a blind plug.

The following table shows the connections for the respective equipment conguration.

The load resistance of metering or indicating instruments, which are connected serial to the current output, may not exceed (U- 13.5 V) / 20 mA .

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3-2

T = QUICKON connector

RAKD-E80

Power supply U

4-20mA

Power supply U / V RL /

Ω

13.5V ...30V < (U-13.5V) / 20mA

i i

~ ~

Limit Switch Type 2

I = 25mA P = 64mW

L = 0.15mH

C = 150nF

KEMA 00ATEX 1037X

Ex ia IIC T6...T4 Gb U = 16V

EN 60947-5-6 (NAMUR)

Limit Switches

RAKD - T80

PTB 00ATEX 2081

L = 97mH

C = 2320nF

I = 19,1mA P = 51mW

Transmitter Relay KFA6-SR2-Ex2.W

U = 10.6V

Ex ia IIC

KFA6-SR2-Ex2.W

Supply 230V AC

Limit MIN

Limit MAX

14 15

MIN

MAX

Hazardous Area

Safe Area

F3.EPS

<3. INSTALLATION>

Fig. 3-1 RAKD with electronic Transmitter

Fig. 3-2 RAKD with 2 limit switches in combination with transmitter relay in Ex- version

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<3. INSTALLATION>

Limit switch / Puls

Ex ia IIC T6...T4 Gb U = 16V

P = 64mW

I = 20mA

C = 0nF L = 0mH

KEMA 00ATEX 1037X

Puls output

Ex ia IIC T6...T4 Gb

U = 10.6V

KEMA 00ATEX 1037X

L = 0.15mH

C = 150nF

U = 16V I = 25mA P = 64mW

PTB 00ATEX 2081

L = 97mH

C = 2320nF

I = 19.1mA P = 51mW

Limit switch type 2

EN 60947-5-6 (NAMUR)

Limit switch or

Pulse output

KFA6-SR2-Ex1.W

Transmitter relay Option: /W2A

[Ex ia] IIC

4-20mA output

I = 100mA

U = 30V

KEMA 00ATEX 1037X

L = 0.73mH

C = 2.4nF

P = 0.75W

Ex ia IIC T6...T4 Gb

RAKD-E80 Option /KS1

Option: /UT

Transmitter power supply

PTB 00ATEX 2018

Tamax = 50°C

C = 86nF L = 5.2mH

RN221N-B1

U = 27.3V

P = 0.597W

[Ex ia] IIC

I = 87.6mA

Output 4-20mA

Power supply 230V AC

~ ~

L-

L+

I -

I +

1 K

15 K

L/+N/-

O -

O+

Hazardous Area Safe Area

3-3

Fig. 3-3 RAKD in Ex-version with electronic transmitter in combination with power supply and additional limit switch or pulse output with transmitter relay.

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3-4

15 mm

F6.EPS

F7.EPS

<3. INSTALLATION>

3.2.2 Conductor connection with Quickon

To connect the conductor, please observe in particular the following steps :

- Strip the sheath to a length of approx. 15 mm

(g. 3-4) and slide the union nut (1), the cap (2) and the rubber seal (3) onto the conductor.

Fig. 3-4

Fig. 3-5

- Slide the rubber seal as far as the rim of the insulation and then slide the cap onto the rubber seal. This provides the strain relief for the conductor (g. 3-5).

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<3. INSTALLATION>

F8.EPS

F9.EPS

- insert the core ends into the feed through of the splice ring (g. 3-6). In order to guarantee a clear assignment of the cores, the individual core feed thorough of the splice ring are numbered (1, 2,…).

Fig. 3-6

- Cut off the projecting core ends. Make sure that the core ends are ush with the splice ring (5):

they can protrude by up to 3 mm, but must not be too short.

3-5

- Insert the prepared conductor into the QUICKON contact carrier (4). Turn the conductor with the splice ring until the coding noses t exactly into

the corresponding guides (g. 3-7).

Fig. 3-7

- Close the gland by tightening the union nut. This

presses the core ends into the insultation displacement terminal blocks, cuts open the core insulation and creates the electrical contact (IDC connection system).

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3-6

<3. INSTALLATION>

3.2.3 Conductor M12 connection (Option /A29 or /A30)

Fig. 3-8

Angular mating connector is only factory delivered with option /A30.

Pin assignment:

Connection Signal

Upper connector 1 (+) 2 (-) One limit switch /K1, /K2, /K6, /K7

Two limit switches /K3, /K8, /K9, /K10: lower switch, e.g. MIN MAX ==> MIN

Upper connector 3 (+) 4 (-) Two limit switches /K3, /K8, /K9, /K10: upper switch, e.g. MIN MAX ==> MAX

Lower connector 1 (+) 2 (-) Electronic transmitter, 4-20 mA supply

Lower connector 3 (+) 4 (-) Electronic transmitter, pulse output (option /CP)

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<4. START OF OPERATION>

4-1

4. Start of operation

4.1 Hints on ow rate measurement

The measured uid should neither consist of a multi-phase mixture nor contain ferrite ingredients or large solid

mass particles.

The RAKD scale is adjusted to the state of operation/aggregation of the measured uid by the manufacturer. If

the state of operation changes, it might become necessary to establish a new scale.

This depends on several factors:

- If the RAKD is operated in the given viscosity independent range, only the density of the oat as well as the

operational density of the previous and new substance have to be considered. In case the operational density only changes marginally (≤ 0.5%), the present scale can be used.

- If the RAMC is operated outside the given viscosity independent range, the viscosities at the previous and

new state of operation as well as the mass and diameter of the oat have to be taken into account.

To establish a new scale, please refer to the folder “Anweisung zur Skalenumrechnung” (Instructions for Scale Conversion) as well as the conversion table or order a new scale.

4.2 Pulsation and pressure shock

Strong pressure impact or ow pulsations can impair measuring operation considerably and should be avoided

open valves slowly, raise operating pressure slowly).

4.3 Start of operation of electronic transmitter

Ensure that the device has been connected correctly according to section 3-2 and that the used power supply meets the requirements indicated on the scale.

Switch on the power supply.. The RAMC is now ready for operation..

The transmitter is prepared and calibrated according to its model code as a 2 wire unit.

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4-2

<4. START OF INSTALLATION>

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