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
©Copyright 2003 (Rü)
5th edition, January 2013 (Rü)
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<CONTENTS>
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
i
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
5.
Limit switches (Option /K1 to /K10) .............................................................................5-1
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ii
6.
Service .......................................................................................................... 6-1
<CONTENTS>
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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<CONTENTS>
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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iv
<CONTENTS>
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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.
• All rights reserved. No part of this document may
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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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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
GB
DK
E
NL
SK
CZ
I
LT
LV
EST
PL
SF
P
F
D
S
SLO
H
BG
RO
M
GR
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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
10
50
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
75
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
F
RAKD-E80
G
T
2
-
+
1
Power supply U
4-20mA
RL
-
+
Power supply U / V RL /
13.5V ...30V < (U-13.5V) / 20mA
i
i
i i
i
-
+
+
-
o
o
o
o
o
-
+
-
+
~ ~
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
BU
2
BN
BU
BN
1
2
1
10
12
6
4
3
1
11
7
8
9
14 15
MIN
F
MAX
S
T
U
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
i
i
i
i
i
o
i
i
i
i
i
o
o
o
o
-
P
+
P
-
-
+
~ ~
i
i
i
i
i
o
+
L-
L+
I -
I +
o
o
o
o
BU
1 K
15 K
2
1
2
3
1
14
7
8
9
15
BN
1
1
2
L/+N/-
O -
O+
S
S
U
F
G
T
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
1
2
3
5
15 mm
4
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. START OF INSTALLATION>
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<5. LIMIT SWITCHES OPTION /K1 TO /K10>
5-1
5.
The optional limit switches are available as maximum or minimum type switches. They are proximity switches according to EN 60947-5-6 (NAMUR). Maximal two switches can be installed. The option (/Wnn) includes the
respective transmitter relay.
These switches have been specied for hazardous area. However, the transmitter relay must be installed
in safe area.
The limit switches are connected to the transmitter relays as indicated in chapter 3.2. The terminals for the limit switches are on a small board on top of the transmitter case.
Use of 2 standard limit switches (option /K3):
The MIN-MIN and MAX-MAX functions have been integrated at the factory as MIN-MAX switches in the RAKD The MIN-MIN or MAX-MAX function is set by adjusting the switching direction of the transmitter relay. The concerning 2- channel transmitter relays are: Option /W1B: KFA5-SR2-Ex2.W Option /W2B: KFA6-SR2-Ex2.W Option /W4B: KFD2-SR2-Ex2.W The following table shows the assignment:

Limit switches (Option /K1 to /K10)

Function Switching direction of transmitter relay *
Channel 1 Channel 2 Channel 1 Channel 2
MIN MAX S1 position I S2 position I
MIN MIN S1 position I S2 position II (ON)
MAX MAX S1 position II (ON) S2 position I
* see following gure for S1 and S2 on transmitter relay.
Use of Fail Safe limit switches (option /K6 ... /K10):
For Fail Safe application only 1- channel transmitter relays are available.
Option /W2E: KHA6-SH-Ex1.W Option /W2F: 2 x KHA6-SH-Ex1.W Option /W4E: KFD2-SH-Ex1.W Option /W4F: 2 x KFD2-SH-Ex1.W
If other transmitter relays are used as the above mentioned types, the transmitter relay has to be applied as protection technology to ensure functional safety.
Please notice chapter 7.2 "Standard specications".
For questions regarding protection technology, please consult your YOKOGAWA service center.
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<5. LIMIT SWITCHES OPTION /K1 TO /K10>
Blank Page
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<6. SERVICE>
IMPORTANT
6-1
6.

Service

6.1 Maintenance

6.1.1 Function test

Checking free movement of pointer:
- Remove housing cover (4 screws).
- After deecting the pointer by hand, it must return to measurement value. If the pointer pivots to different values upon repeated deections, there is too much friction in the bearings. In this case, send indication unit
to service.
Checking free movement of oat:
- First, free movement of pointer has to be ascertained.
- Check visually if pointer follows each ow rate change. If not, clean oat and measuring tube.
Unit with electronic transmitter:
- Without ow, the output current must be 4 mA. At a ow rate of 100% the current must be 20 mA. If only the pointer is moved to 100%, the current may not exeed 17mA.
6.1.2 Measuring tube, oat
The Rotameter does not normally require any maintenance. However cleaning is necessary if the measuring cone or at has been contaminated by the process. To clean, the Rotameter must be removed from the
pipeline.
For all kind of intervention in the Rotameter like tightening the packing of the valve the pressures in pressurized pipelines has to be reduced. Take care that the counter screw is tighten after screwing the valve.
Disassembling the tube
Please perform the following steps to clean the measuring tube and the oat:
• Disassemble the Rotameter from the pipe
• Unscrew hollowed top threaded bolt (6) (for cone 31 – 43) resp. remove top snap ring and socket (for cone 44 – 51) resp. only top snap ring (for cone 52 – 53)
• Remove top oat stop (3)
• Disassemble oat – Attention: Do not bend the oat
• For version with valve in the inlet remove rst the top head pipe plug (8)
• For version with valve in the outlet remove rst the lower head pipe plug;
in that case the disassembling of all parts start from down to top
• Cleaning of metering tube and oat
• To clean the valve loose screw nut (10) in the head. Afterwards you can unscrew spindle (12) with PTFE packing box plus thrust collar (9)
Please don’t expose the oat to any strong magnetic alternating elds. The oating body and particularly
its measuring edge may not be damaged.
Assembling the tube
Mounting starts in opposite sequence.
Assembling the oat take care that the lower guide bar of the oat is xed in the middle boring of the lower stop. The guide bar should not be bended.
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F61.EPS
F62.EPS
<6. SERVICE>

6.1.3 Explosion drawings

No. in Fig. 6-1 and 6-2 Part
1 Tube for unit with valve and
controller
2 Socket
3 Float stop
4 Cone
5 Float
6 Threaded bold
7 Gasket
8 Screw sealing plug
9 ; 10; 11; 12; 13 Packing for valve
14 Indicator
15 Nut M5
16; 19 Nozzle
17; 20 Cutting ring tting
18 Controller
21 Tube for unit without valve
and controller
Fig. 6-1 RAKD without valve and controller
Fig. 6-2 RAKD with valve and controller
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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<6. SERVICE>
IMPORTANT
IMPORTANT

6.1.4 Electronic transmitter

The electronic transmitter is maintenance-free. The electronic section is sealed and can not be repaired. The transmitter is tuned with the mechanical components in factory, therefore single components can be
replaced only by loss of accuracy.

6.1.5 Exchange of scale

Preparations :
· Check commision no., code, and data of new parts.
· Switch off power supply.
· Remove the cover of the indicator
Do not bend or twist the pointer on its axis !
Exchange of scale:
- Untighten the screw of the scale.
- Remove the screw and the small cover.
- Pull the scale out of the indicator to the left in which the scale raised on the right to raise it from the 2 pins.
- Shove the new scale correspondingly below the pointer from the left until the 2 pins click into the accompanying holes.
- Establish the small cover and x the scale with the screw.
6-3
Final actions:
· Fix the cover of the indicator.
· Switch power on.
· Check the unit for a faultless function.

6.1.6 Exchange of indicator

The indicator can be replaced by the same type if the scale of the old unit is put into the new indicator, Procedure with RAKD with electronic transmitter (type "E" ):
· Switch off power supply.
· Remove the cover of the indicator
- Disconnect the cables from the Quickon connectors.
- Remove the old scale and put in the new one.
- Please not the hints for exchange of scale
- Remove the old indicator from the tube and replace it by the new one. Please take care to mount the washers and spacers in the same positions as they were before dismantling.
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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F63.EPS
<6. SERVICE>

6.1.7 Troubleshooting

In case the RAMC does not work properly, use the following ow charts for troubleshooting, then check,
isolate and remedy the fault.
Precision problems with "T" unit: execute test acc. g. 6-3
If the indicated countermeasure do not remedy the fault or in case of troubles which cannot be remedied by
the user, please contact your YOKOGAWA service centre.
Fig. 6-3
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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<6. SERVICE>
6-5

6.2 Template for sending back to service

Sending an instrument back to service
Installation and operation of the Rotameter RAKD in compliance with this manual is generally trouble-free.
In case a RAKD has to be sent for repairs or checking to our service, please observe the following: Due to legislation for the protection of the environment and for the safety of our staff, YOKOGAWA may only
ship, repair and check sent devices on the condition that this does not constitute any risk to environment and staff.
YOKOGAWA can only process your returned RAKD if you attach a certicate of harmlessness according to
the following sample.
If the unit has been in contact with corrosive, poisonous, ammable or water polluting substances, you
must,
- ensure that all parts and hollow spaces of the unit are free of these dangerous substances.
- attach a certicate of harmlessness to the returned unit.
Please understand that YOKOGAWA cannot process your returned unit without such a certicate.
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
6-6
ROTA YOKOGAWA GmbH & Co. KG Service & Repair Department Rheinstraße 8; D - 79664 Wehr Phone no.: +49 (0)7761-567-190 Fax no.: +49 (0)7761-567-285 e-Mail: services.flow@de.yokogawa.com
Declaration of Decontamination
Legal regulations for the safety of our employees and operating equipment determine that we need the declaration of decontamination before your order can be handled.
Please make sure to include it with the shipping documents, attached to the outside of the packaging you use for shipment.
Customer data
Company:
Address:
Contact person: E-Mail:
Phone no.: Fax no.:
Reference/Order no.:
Instrument data* Type: Serial no.:
Type: Serial no.:
*If not enough, note on separate sheet
Process data Process medium:
Medium is: [ ] toxic
[ ] corrosive [ ] explosive [ ] biological hazardous [ ] unknown if dangerous [ ] non hazardous
Remarks:
Cleaning agent:
Kind of cleaning :
Other remarks / Reason of return:
We hereby confirm that this statement is filled in completely and truthfully. The returned instruments were carefully cleaned and are thus free from product residue and dirt. I agree that if this arrangement does not match with the instruments, they will be sent back to the above mentioned customer address at our expenses.
Name Date Signature
<6. SERVICE>
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
<7. TECHNICAL DATA>
7- 1

7. Technical Data

7.1 RAKD Type-, Suffix-codes and Options

RAKD with valve and controller (option /R1 and /R3) 1.0 - 100 l/h water / 40 - 3250 l/h air
Water (l/h) Air (l/h) With valve in inlet Type:
1. 5 100 33 PTFE PCTFE VPE
RAKD ------- SS ------------- ------------------------------------------ 80 / options
Process connection Max. Flow Cone Version Indicator
Internal thread:
Rp 1/4 PN 25 41 R3 1 40 31 Gasket Valve seat Local indicator T
1/4 NPT PN 25 41 T3 1. 6 60 32 PTFE Silver VSE Indicator wit electronic output E
Cutting ring: 4 150 34 Housing type:
Ø 6 PN 25 53 C3 6 200 37 With valve in outlet Stainless steel 80
Ø 8 PN 25 54 C3 10 325 41 Gasket Valve seat
Ø 10 PN 25 55 C3 16 500 42 PTFE Silver VSA Power supply:
Ø 12 PN 25 56 C3 25 800 43 PTFE PCTFE V PA none, for type ´T´ NNN
All Rights Reserved. Copyright © 2003, Rota Yokogawa
40 1400 44 24V, 2- wire, 4 - 20mA, for type ´E´ 424
Material: 1.4571 / AISI 316Ti
Nozzle: 60 2000 47
Ø 6 PN 10 53 P1 SS 100 3250 51
Ø 8 PN 10 54 P1
Cone Dp mbar
Swagelok: 31 - 37 6
Ø 6 PN 25 53 W3 41 - 43 8
Ø 8 PN 25 54 W3 44 - 51 11
Ø 10 PN 25 55 W3
Ø 12 PN 25 56 W3
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<7. TECHNICAL DATA>
RAKD with valve 1.0 - 250 l/h water / 40 - 8000 l/h air
Water (l/h) Air (l/h) With valve in inlet Type:
RAKD ------- SS ------------- ------------------------------------------ 80 / options
Process connection Max. Flow Cone Version Indicator
Internal thread:
G 1/4 PN 40 41 G4 1 40 31 Gasket Valve seat Local indicator T
G 1/4 PN 100 41 G6 1. 6 60 32 PTFE Silver VSE Indicator wit electronic output E
1/4 NPT PN 40 41 T4 1. 5 100 33 PTFE PCTFE VPE
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
1/4 NPT PN 100 41 T6 4 150 34 Housing type:
6 200 37 With valve in outlet Stainless steel 80
Cutting ring: 10 325 41 Gasket Valve seat
Ø 6 PN 40 53 C4 16 500 42 PTFE Silver VSA Power supply:
Ø 6 PN 100 53 C6 25 800 43 PTFE PCTFE V PA none, for type ´T´ NNN
Ø 8 PN 40 54 C4 40 1400 44 24V, 2- wire, 4 - 20mA, for type ´E´ 424
Material: 1.4571 / AISI 316Ti
Ø 8 PN 100 54 C6 60 2000 47
Ø 10 PN 40 55 C4 SS 10 0 3250 51
Ø 10 PN 100 55 C6 160 5000 52
Ø 12 PN 40 56 C4 250 8000 53
Cone Dp mbar
Ø 12 PN 100 56 C6
Nozzle: 31 - 37 6
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52 - 53 13
Ø 6 PN 10 53 P1 41 - 43 8
Ø 8 PN 10 54 P1 44 - 51 11
Swagelok:
Ø 6 PN 40 53 W3
Ø 6 PN 100 53 W6
Ø 8 PN 40 54 W3
Ø 8 PN 100 54 W6
Ø 10 PN 40 55 W3
Ø 10 PN 100 55 W6
Ø 12 PN 40 56 W3
Ø 12 PN 100 56 W6
RAKD without valve 1.0 - 100 l/h water / 40 - 3250 l/h air
T
E
80
NNN
424
<7. TECHNICAL DATA>
7- 3
Type:
Local indicator
Without valve NNN
Water (l/h) Air (l/h)
Indicator wit electronic output
Housing type:
Stainless steel
Power supply:
16 500 42
none, for type ´T´
24V, 2- wire, 4 - 20mA, for type ´E´
25 800 43
Dp mbar
Cone
31 - 37 6
Material: 1.4571 / AISI 316Ti
RAKD ------- SS ------------- NNN ------------------------------------------- 80 / options
Process connection Max. Flow Cone Version Indicator
Flange: *)
DN 15 PN 40 01 D4 1 40 31
DN 25 PN 40 02 D4 1. 6 60 32
ANSI 1/2 150 lbs 01 A1 1. 5 100 33
ANSI 1 150 lbs 02 A1 4 150 34
ANSI 1/2 300 lbs 01 A2 6 200 37
ANSI 1 300 lbs 02 A2 10 325 41
Internal thread:
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G 1/4 PN 100 41 G6 40 1400 44
G 1/4 PN 160 41 G7 60 2000 47
1/4 NPT PN 100 41 G6 SS 10 0 3250 51
1/4 NPT PN 160 41 G7
Cutting ring:
Ø 6 PN 100 53 C6 41 - 43 8
Ø 6 PN 160 53 C7 44 - 51 11
Ø 8 PN 100 54 C6
Ø 8 PN 160 54 C7
Ø 10 PN 100 55 C6
Ø 10 PN 160 55 C7
Ø 12 PN 100 56 C6
Ø 12 PN 160 56 C7
Nozzle:
Ø 6 PN 10 53 P1
Ø 8 PN 10 54 P1
Swagelok:
Ø 6 PN 100 53 W6
Ø 6 PN 160 53 W7
Ø 8 PN 100 54 W6
Ø 8 PN 160 54 W7
Ø 10 PN 100 55 W6
Ø 10 PN 160 55 W7
Ø 12 PN 100 56 W6
Ø 12 PN 160 56 W7 *) Gasket PTFE
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<7. TECHNICAL DATA>
RAKD without valve 160 - 250 l/h water / 5000 - 8000 l/h air
T
E
80
NNN
424
Type:
Local indicator
Without valve NNN
Water (l/h) Air (l/h)
Indicator wit electronic output
Housing type:
Stainless steel
Power supply:
24V, 2- wire, 4 - 20mA, for type ´E´
Material: 1.4571 / AISI 316Ti
RAKD ------- SS ------------- NNN ------------------------------------------- 80 / options
Process connection Max. Flow Cone Version Indicator
Flange: *)
DN 15 PN 40 01 D4 160 5000 52
DN 25 PN 40 02 D4 250 8000 53
ANSI 1/2 150 lbs 01 A1
ANSI 1 150 lbs 02 A1 Cone Dp mbar
ANSI 1/2 300 lbs 01 A2 52 - 53 13
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
ANSI 1 300 lbs 02 A2
Internal thread: none, for type ´T´
G 3/8 PN 100 42 G6
G 3/8 PN 160 42 G7
3/8 NPT PN 100 42 G6 SS
3/8 NPT PN 160 42 G7
Cutting ring:
Ø 12 PN 100 56 C6
Ø 12 PN 160 56 C7
Swagelok:
Ø 12 PN 100 56 W6
*) Gasket PTFE
Ø 12 PN 160 56 W7
All Rights Reserved. Copyright © 2003, Rota Yokogawa
<7. TECHNICAL DATA>
OPTIONS
Options Option
Indicator /A12
Marking /B1
Limit switches /K1
Pulse output /CP Pulse output, acc. EN 60947-5-6 (NAMUR) Only for indicator E; not with limit switches
Hazardous area approvals
Test and certicates /H1
Gost approval /QR1
Controller /R1
Delivery to Korea /KC With KC-mark for Korea
Power supply for electronic transmitter
Power supply for limit switches (transmitter relay)
code
/A29 /A30
/B4 /B8 /B10 /BG /BD
/K2 /K3 /K6 /K7 /K8 /K9 /K10
/KS1 /KS2 /KS3 /KN1 /ES1 /ES3 /FS1 /CS1
/NS1
/PP /P2 /P3 /P6 /PM1 /PM4 /PM5
/QR2 /QR3
/R3
/UT RN221N-B1, 20 ... 250V DC/AC, Ex i Only for indicator E
/W1A /W1B /W2A /W2B /W2E
/W2F
/W4A /W4B /W4E
/W4F
Instruction manuals /IEn
/IDn
/IFn
Special order /Z Special design must be specication on extra sheet
*) if no instruction manual is selected, only a DVD with instruction manuals is shipped with the owmeter
Description Restriction
US- engineering units
M12- connector acc. IEC 61076-2-101 (in preparation) M12- connector with plug connector acc. IEC 61076-2-101 (in prepa­ration)
Tag plate (SS) xed by wire and customer specied tag number on
scale
Neutral version
Customer provided marking on label Percent scale With customer specied tag number on scale
Dual Scale
MIN- contact
MAX- contact
MIN-MAX- contact, MIN-MIN- contact, MAX-MAX- contact MIN- contact “Fail safe” version MAX- contact “Fail safe” version MIN-MAX- contact “Fail safe” version MIN-MIN- contact “Fail safe” version MAX-MAX- contact “Fail safe” version
ATEX intrinsically safe „ia“ ATEX gas and dust proof limit switches, category 2G 1D ATEX intrinsically safe „ic“ ATEX category 3G „nL“ / 3D IECEx intrinsically safe „ia“ IECEx intrinsically safe „ic“ FM intrinsically safe / non incendive limit switches (USA) CSA intrinsically safe / non incendive limit switches (Canada)
NEPSI approval (China)
Oil + fat free for wetted surfaces
Pressure test report measuring system
Certicate of Compliance with the order acc. to EN 10204: 2004- 2.1 As /P2 +Test report acc. to EN 10204: 2004- 2.2 Material certicate acc. to EN 10204: 2004- 3.1 PAMI test (1 test point : metering tube) PAMI test (4 test points : metering tube, connection heads, sealing plug) PAMI test (5 test points : metering tube, connection pieces, slip on anges)
Primary Calibration and Test Conrmation valid in Russia Primary Calibration and Test Conrmation valid in Kazakhstan Primary Calibration and Test Conrmation valid in Uzbekistan
Pre pressure controller 1.4571 (only with valve in inlet; for gas
variable pre pressure and liquids with variable pre and back pressure)
Back pressure controller 1.4571 (only with valve in outlet; for gas
with variable back pressure)
KFA5-SR2-Ex1.W / 115 V AC, 1 channel KFA5-SR2-Ex2.W / 115 V AC, 2 channel KFA6-SR2-Ex1.W / 230 V AC, 1 channel KFA6-SR2-Ex2.W / 230 V AC, 2 channel KHA6-SH-Ex1 / 115/230 V AC, 1 channel, Fail Safe 2x KHA6-SH-Ex1 / 115/230 V AC, 1 channel, Fail Safe KFD2-SR2-Ex1.W / 24 V DC, 1 channel KFD2-SR2-Ex2.W / 24 V DC, 2 channel KFD2-SH-Ex1 / 24 V DC, 1 channel, Fail Safe 2x KFD2-SH-Ex1 / 24 V DC, 1 channel, Fail Safe
Quantity of instruction manuals in English Quantity of instruction manuals in German
Quantity of instruction manuals in French
Only for indicator E Only for indicator E or T with limit switches Only for indicator E or T with limit switches
Plate 12 x 40 mm; max. 45 digits
Not with Ex-proof type
Max. 45 digits Adjustment only possible for 1 uid
Only for indicator T
Only for indicator T Only for indicator T Only for indicator T
Not for indicator T without limit switches Only for indicator T with limit switches Not for indicator T without limit switches Not for indicator T without limit switches Not for indicator T without limit switches
For indicator T only with limit switches For indicator T only with limit switches; limit switches
only /K1, /K2, /K3, only in combination with power
supply /WxA or /WxB Not for indicator T without limit switches
Not for /R1 and /R3
Only for tube, connection heads, screw sealing plug
Only for models with valve Only for models with process connection D4, A1, A2
See page 4 See page 4 See page 4
with
Only for process connection R3, T3, C3, W3, P1;
only with valve
Only for process connection R3, T3, C3, W3, P1;
only with valve
Only for limit switches /K1, /K2, /K3 or /CP Only for limit switches /K1, /K2, /K3 Only for limit switches /K1, /K2, /K3 or /CP Only for limit switches /K1, /K2, /K3 Only for limit switches /K6, /K7 Only for limit switches /K8, /K9, /K10 Only for limit switches /K1, /K2, /K3 or /CP Only for limit switches /K1, /K2, /K3 Only for limit switches /K6, /K7 Only for limit switches /K8, /K9, /K10
n = 1 to 9 selectable *) n = 1 to 9 selectable *) n = 1 to 9 selectable *)
7- 5
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
7- 6
<7. TECHNICAL DATA>
7.2 Standard Specications
The responsibility with respect to the suitability and according application of our owmeter is only situated by the customer.
MEASURING TUBE
Materials of wetted parts : Stainless steel AISI 316Ti
(1.4571) other materials on request
Fluids to be measured : Liquid or gas Measuring range : see ow table Measuring range ratio : 10:1 Process connections :
– Inner thread : – Cutting ring : 6 mm; 8 mm; 10 mm; 12 mm – Cutting ring (Swagelok) : 6 mm; 8 mm; 10 mm; 12 mm – Nozzle : 6 mm; 8 mm – Flange : - acc. EN 1092-1 DN15 and DN25 PN40;
­ 150 lbs, 300 lbs
- gasket PTFE
Process pressure : depends on process
connection; see model code
Process temperature : without valve -25°C to 250°C with valve -25°C to 150°C
See also g. 6. Lower
temperatures on request.
Measurement accuracy : acc. Directive VDI/VDE 3513
sheet 2 (qG=50%) 4%
Installation :
– Installation position : vertical – Flow direction : upwards – Face to face length :
Weight : see table 7-14
LOCAL INDICATOR
(Indicator/Code -T)
Principle :
The indication is made by magnetic coupling of a magnet enclosed in the oat and a magnet in the indication unit, which follows the movements of the oat.
Indication scale : Flow units Indicator housing
– Material : Stainless steel AISI 304
(1.4301)
– Degree of Protection : IP66/67
Scales :
- Standard : removable aluminium plate with scale
(double scale as option)
Transportation and storage condition
: - 40°C to +110°C
.
G1/4; 1/4 NPT; G 3/8; 3/8; NPT
acc. ASME B 16.5 ½” and 1”
125 mm (with ange 250 mm)
ELECTRONIC TRANSMITTER
(Indicator/Code -E)
Temperature range : -25°C to +65°C Transportation and storage condition
: -40°C to +70°C
Process-/ Ambient temperature :
The dependency of the process temperature from the
ambient temperature is shown in g.6.
Power supply : 14 ... 30 V DC Load resistance : (U - 14V) / 20 mA, max. 500 Analog output : 4-20 mA
Linearity : ≤ ± 0.25% f.s. Hysteresis : ≤ ± 0.15% f.s. Repeatability : ≤ ± 0.16% f.s. Inuence of power supply : ≤ ± 0.1% f.s. Temp. coefficient of analog output : ≤ ± 0.5% /10 K f.s.
AC-part of analog output
: ≤ ± 0.15% f.s. Long time stability : ≤ ± 0.2% / year Maximum output current : 21.5 mA Output current in case of failure : ≤ 3.6 mA (NAMUR NE 43)
Response time (99%)
: approx. 1 s
Pulse output (Option /CP) : Electronic switch with galvanic
isolation
acc. EN 60947-5-6 (NAMUR)
- Pulse length : 200 ms
- Max. frequency : 4 Hz
- Pulse rate : Qmax ≤ 1 0.0001 : 1 < Qmax ≤ 10 0.001 etc. e.g.. Qmax = 1 m3/h 1 Puls = 0.0001 m3 = 0.1
Electromagnetic compatibility (EMC)
- EN 61326-1: 2006, Class A, Table 2 EN 61326-2-3 : 2006
POWER SUPPLY FOR ELECTRONIC TRANSMITTER
(Option /UT)
Type :
Power supply with galvanically separated input and output
- RN221N-B1, HART- compatible
Supply voltage :
20 ... 250 V DC / AC 50/60 Hz
Maximum load : 700 Ω
Output signal :
4 - 20 mA
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
ELECTRICAL CONNECTION (Indicator/Code -E) :
Type : Quickon Cable diameter : 4 – 6 mm Maximum cross section of core : Ø 0.34 to 0.75 mm
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2
<7. TECHNICAL DATA>
7- 7
LIMIT SWITCHES IN STANDARD VERSION
(option /K1 to /K3)
Type : Inductive proximity switch SC2-NO acc. DIN EN 60947-5-6
Nominal voltage : 8V DC Output signal : ≤ 1 mA or ≥ 3 mA Hysteresis : < 0.5mm
LIMIT SWITCHES IN FAIL SAFE VERSION
(option /K6 to /K10)
Type : Inductive proximity switch
SJ2-SN; SJ2-S1N acc. DIN EN 60947-5-6
Nominal voltage : 8V DC Output signal : ≤ 1 mA or ≥ 3 mA Hysteresis : < 0.5mm
HYSTERESIS OF LIMIT SWITCHES
Min-contact / Max-contact :
- pointer movement : ≈ 0.8 mm
- oat movement : ≈ 0.8 mm
Minimum distance between 2 contacts : ≈ 8 mm
ELECTRICAL CONNECTION (option /K1 to /K10) :
Type : Quickon Cable diameter : 4 – 6 mm Maximum cross section of core : Ø 0.34 to 0.75 mm
2
POWER SUPPLY FOR LIMIT SWITCHES (Option /W__)
Type : Transmitter relay
Fail Safe, only one channel
- KFD2-SH-Ex1 (24 V DC), Fail Safe, only one channel Power supply : - 230 V AC ± 10%, 45-65Hz
- 115 V AC ± 10%, 45-65Hz
- 24 V DC ± 25% Relay output : 1 or 2 potential-free change over
contact(s)
Switching capacity : max. 250V AC, max. 2 A Note :
If Fail-Safe limit switch option /K6 or /K7 is ordered, for pow­er
supply option /W2E or /W4E must be selected.
If Fail-Safe limit switch option /K8, /K9 or /K10 is ordered, for power supply option /W2F or /W4F must be selected.
acc. DIN EN 50227 (NAMUR)
- KFA6-SR2-Ex1-W (230 V AC)
- KFA5-SR2-Ex1-W (115 V AC)
- KFD2-SR2-Ex1-W (24 V DC)
- KHA6-SH-Ex1 (115/230 V AC),
SWITCHING LEVELS FOR LIMIT SWITCHES
Table 7-1 Min, Max and Min-Max-contact in standard version
Option /K1 Option /K2 Option /K3
Function Pointer
above LV
MAX
below LV
Function Pointer
above LV
MIN
below LV
Note: LV = Limit value
Table 7-2 Min, Max and Min-Max-contact in fail-safe version
Function Pointer
above LV
MAX
below LV
Fail Safe
Function Pointer
above LV
MIN
below LV
Fail Safe
Note: LV = Limit value
Table 7-3 Limit switch as Min-Min-contact in fail-safe version
Function Pointer
above LV
MIN
below LV
Fail Safe
Function Pointer
above LV
MIN
below LV
Fail Safe
Note: LV = Limit value
Table 7-4 Limit switch as Max-Max-contact in fail-safe version
Function Pointer
above LV
MAX
below LV
Fail Safe
Function Pointer
above LV
MAX
below LV
Fail Safe
Note: LV = Limit value
Signal Signal Signal
SC2-N0 SC2-N0 SC2-N0
----
----
Signal Signal Signal
SC2-N0 SC2-N0 SC2-N0
3 mA 1 mA
Option /K6 Option /K7 Option /K8
Signal Signal Signal
SJ2-SN SJ2-SN SJ2-SN
----
----
----
Signal Signal Signal
SJ2-SN SJ2-SN SJ2-SN
3 mA 1 mA 1 mA
Option /K9
Signal
SJ2-S1N
3 mA 1 mA 1 mA
Signal
SJ2-SN
3 mA 1 mA 1 mA
Option /K10
Signal
SJ2-SN
1 mA 3 mA 1 mA
Signal
SJ2-S1N
1 mA 3 mA 1 mA
1 mA 3 mA
----
----
1 mA 3 mA 1 mA
----
----
----
1 mA 3 mA
3 mA 1 mA
1 mA 3 mA 1 mA
3 mA 1 mA 1 mA
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<7. TECHNICAL DATA>
CONTROLLER (Option /R1 and R3)
Differential pressure controller for a constant ow at uctuations of the process pressure. These are no valves to reduce the pressure.
- Controller /R1 for liquids with variable inlet or outlet pressure and for gases with variable inlet pressure and constant back pressure.
- Controller /R3 for gases with uctuations of the back pressure.
Max. liquid ow : 100 l/h Max. gas ow : 3250 l/h Max. pressure : 25 bar Recommended differential pressure
: >400 mbar
Temperature range : -25°C to + 80°C Materials : Table 7-5
Housing Diaphragm Springs
/R1 / /R3 CrNi-Steel PTFE CrNi-Steel
l/h air at 20°C ; 1.013 bar abs.
Inlet pressure
Fig. 7-1 Diagram controller characteristic
COMPLIANCE WITH IEC 61508
RAKD with local indicator and standard or fail safe limit switches (RAKD[][]-[][]SS-[][][][][]-T[][]NNN/K1…K10):
Suitable for application in safety functions up to and including SIL2.
RAKD with valve and controller with local indicator and standard or fail safe limit switches (RAKD[][]-[][]SS-[][]V[][]-T[][]NNN/R[]/K1…K10):
Suitable for application in safety functions up to and including SIL1. Reliability data available on request in FMEDA report.
COMPLIANCE WITH ISO 13849
For Safety Metrics acc. to ISO 13849-2 please refer to the FMEDA report.
METROLOGICAL REGULATION IN CIS (GOST)
RAKD has “Pattern Approval Certicate of Measuring
Instruments” and is registered as a measuring instrument in Russia, Kazakhstan, Uzbekistan, Belarus and Ukraine. The calibration laboratory of Rota Yokogawa is approved by Federal Agency on Technical Regulating and Metrology in Russia and other Metrological Organizations in CIS countries
to issue primary calibration conrmations for RAKD, option
/QR[]. Furthermore RAKD is RTN (GGTN) approved for installation
in hazardous areas.
For export to CIS countries please contact your Yokogawa
representative.
HAZARDOUS AREA SPECIFICATIONS
RAKD with ATEX- certication “intrinsic safe” (option /KS1)
Certicate :
KEMA 00ATEX 1037X
Output signal : 4–20 mA / Pulse output / Limit switches
Explosion proof :
Ex ia IIC T6 ... T4 Gb
Entity parameter : Table 7-6
Analog
output
Ui [V] 30 16 16 16 16 16
Ii[ mA] 100 20 25 52 25 52
Pi [mW] 750 64 64 169 64 16 9
Li [mH] 0.73 0 0.15 0.15 0.1 0.1
Ci [nF] 2.4 0 150 150 30 30
Temperature specication : Table 7-7
Congura-
tion
Transmitter
4-20mA / Pulse
Limit switch(es) type 2
Limit switch(es) type 3
For the conguration where a transmitter is combined with
limit switches, the temperature class is determined by the
most restrictive combinations of maximum ambient temperature and maximum process temperature. Description of limit switch type 2 and 3 see ATEX certicates from Pepperl & Fuchs:
- PTB 99 ATEX 2219X ( SC2-NO) for /K1 to /K3
- PTB 00 ATEX 2049X (SJ2-S.N) for /K6 to /K10
RAKD “non incendive” (option /KN1)
Type “n” (non incendive) acc. EN 60079-15.
Explosion proof :
Ex nL IIC T6 protection „nL”; group II ; category 3G
Dust proof : Ex II 3D; group II ; category 3D
Max. surface temperature : 80°C Entity parameter :
see table 7-6
Temperature specication :
see table 7-7
Pulse
output
Max.
ambient
temperature
65°C 65°C
50°C 80°C
45°C 100°C T5
38°C 135°C T4
65°C 65°C T6
80°C 80°C
59°C 100°C
100°C 100°C
73°C 135°C
24°C 65°C T6
37°C 80°C
34°C 100°C
57°C 80°C
48°C 135°C
Limit switch type 2
/K1-/K3
process tem-
perature
Limit switch type 3
/K1-/K3
Max.
switch type 2
/K6-/K8
Limit
Limit switch type 3
/K6-/K8
Temperature
class
T6
T5
T4
T5
T454°C 100°C
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<7. TECHNICAL DATA>
7- 9
RAKD with ATEX- certication “intrinsic safe ic” (option /KS3)
Output signal :
4–20 mA / Pulse output / Limit switches
Explosion proof :
Ex ic IIC T6; Gc group II ; category 3G
Entity parameter : see table 6
Temperature specication :
see table 7
RAKD with IECEx- certication “intrinsic safe” (option /ES1)
Certicate :
IECEx DEK 12.0003X
Output signal :
4–20 mA / Pulse output / Limit switches
Explosion proof :
Ex ia IIC T6 ... T4 Gb
Entity parameter :
Table 8
Analog
output
Ui [V] 30 16 16 16 16 16
Ii[ mA] 100 20 25 52 25 52
Pi [mW] 750 64 64 169 64 16 9
Li [mH] 0.73 0 0.15 0.15 0.1 0.1
Ci [nF] 2.4 0 150 150 30 30
Temperature specication : Table 9
Congura-
tion
Transmitter
4-20mA / Pulse
Limit switch(es) type 2
Limit switch(es) type 3
For the conguration where a transmitter is combined with
limit switches, the temperature class is determined by the
most restrictive combinations of maximum ambient temperature and maximum process temperature. Description of limit switch type 2 and 3 see IECEx certicates from Pepperl & Fuchs:
- IECEx PTB 11.0091X ( SC2-NO) for /K1 to /K3
- IECEx PTB 11.0092X (SJ2-S.N) for /K6 to /K10
Pulse
output
ambient
temperature
Max.
Limit switch type 2
/K1-/K3
process tem-
Limit
switch
type 3
/K1-/K3
Max.
perature
switch type 2
/K6-/K8
65°C 65°C
50°C 80°C
45°C 100°C T5
38°C 135°C T4
65°C 65°C T6
80°C 80°C
59°C 100°C
100°C 100°C
73°C 135°C
24°C 65°C T6
37°C 80°C
34°C 100°C
57°C 80°C
48°C 135°C
Limit
Limit
switch
type 3
/K6-/K8
Temperature
class
T6
T5
T4
T5
T454°C 100°C
RAKD with IECEx- certication “intrinsic safe ic” (option /ES3)
Output signal :
4–20 mA / Pulse output / Limit switches
Explosion proof :
Ex ic IIC T6; Gc group II ; category 3G
Entity parameter : see table 8
Temperature specication :
see table 9
RAKD with NEPSI- certication “intrinsic safe” (China) (option /NS1) :
Certicate :
GYJ101552 Output signal :
4–20 mA
Explosion proof :
Ex ia IIC T5/T6
Max. Tamb. :
65°C
Limit switches :
option /K1 to /K8, see certicates GYJ11.1505X
Entity parameter :
Table 10
Ui [V] 30 16 16 16 16 16
Ii[ mA] 10 0 20 25 52 25 52
Ui [V] 30 16 16 16 16 16
Pi [mW] 750 64 64 169 64 169
Ii[ mA] 10 0 20 25 52 25 52
Li [mH] 0.73 0 0.15 0.15 0.1 0.1
Pi [mW] 750 64 64 169 64 169
Ci [nF] 2.4 0 150 150 30 30
Li [mH] 0.73 0 0.15 0.15 0.1 0.1
Ci [nF] 2.4 0 150 150 30 30
Analog
output
Analog output
Pulse
output
Pulse
output
Limit
switch
type 2 Limit
/K1-/K3 switch
type 2
/K1-/K3
Limit switch type 3
Limit
/K1-/K3 switch
type 3
/K1-/K3
Limit switch type 2
Limit
/K6-/K8 switch
type 2
/K6-/K8
Temperature specication :
Table 11
Max. ambient
temperature
Max. process
temperature
Temperature
65°C 65°C T6 50°C 80°C T6 45°C 95°C T5
Description of limit switch type 2 and 3 see ATEX certicates from Pepperl & Fuchs:
- PTB 99 ATEX 2219X ( SC2-NO) for /K1 to /K3
- PTB 00 ATEX 2049X (SJ2-S.N) for /K6 to /K10
RAKD with PESO- certication (India)
Option /KS1 must be selected. PESO- certicate is available at your Yokogawa Sales Office.
RAKD with KOSHA- certication (Korea)
Option /ES1 must be selected. Same data as for IECEx certication.
class
Limit switch type 3
Limit
/K6-/K8 switch
type 3
/K6-/K8
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<7. TECHNICAL DATA>
Intrinsically safe and dust proof limit switches with ATEX-certication (only for indicator T with option /K1 ... /K10) (option /KS2) :
Certicate :
- PTB 99 ATEX 2219X ( SC2-NO)
- PTB 00 ATEX 2049X (SJ 2-S.N)
- ZELM 03 ATEX 0128X (for dust proof)
Explosion proof : EEx ia IIC T6, group II category 2G Dust proof:
Ex iaD 20 T 108 °C, group I I category 1D Max. surface temperature : T108°C
Entity parameter : see certicate of conformity
Intrinsically safe / non incendive limit switches with FM-
certication (USA) (only for indicator T
with option /K1 ... /K10) (option /FS1) :
Explosion proof :
IS : Cl. I, Div. 1, Gp. ABCD, T6, Ta = 60°C, Nl : Cl. I, Div. 2, Gp. ABCD, T5, Ta = 50°C
Cl. II, Div. 1, Gp. EFG Cl. III, Div. 1
Entity parameter :
see FM-control drawing 116-0165 for IS
see FM-control drawing 116-0155 for Nl
Intrinsically safe limit switches with CSA­cation (Canada) (only for indicator T
with option
certi-
/K1 ... /K3) (option /CS1) :
Explosion proof :
Cl. I, II, III, Div. 1, Gp. ABCDEFG
Entity parameter : see drawing 116-0047 Only in combination with option /WxA or /WxB.
Power Supply for the intrinsically safe electron­ic
transmitter (option /UT)
Type :
Power supply with galvanically separated input and out-
put
- RN221N-B1, HART- compatible
Certicate :
PTB 00 ATEX 2018
Supply voltage :
20 ... 250 V DC / AC 50/60 Hz
Maximum load impedance : 700 Ω Output signal : 4 - 20 mA Control circuit :
Intrinsically safe [Ex ia] IIC; group II ; category (1)GD
Entity parameters : see g. 5
Power supply for intrinsically safe limit switches (option W__) :
Type :
acc. DIN EN 50227 (NAMUR)
- KFA5-SR2-Ex*-W (115 V AC)
- KFA6-SR2-Ex*-W (230 V AC)
- KFD2-SR2-Ex*-W (24 V DC)
- KHA6-SH-Ex1 (115/230 V AC), Fail Safe, 1 channel
- KFD2-SH-Ex1 (24 V DC), Fail Safe, 1 channel
Certicates :
- KFA5-SR2-Ex*-W
CSA : 1029981 (LR 36087-19) FM : ID 3011578 IECEx : PTB11.0031 PESO KOSHA : 2009-BO-0157
- KFA6-SR2-Ex*-W
CSA : 1029981 (LR 36087-19) FM : ID 3011578 IECEx : PTB11.0031 PESO KOSHA : 2009-BO-0157
- KHA6-SH-Ex1
- KFD2-SR2-Ex*-W
CSA : 1029981 (LR 36087-19) FM : ID 3011578 IECEx : PTB11.0034 PESO KOSHA : 2009-BO-0157 NEPSI : GYJ12.1081
- KFD2-SH-Ex1 NEPSI : GYJ091350
Control circuit (ATEX): Entity parameter: see g. 5 (ATEX) and certicate Power supply :
- 230 V AC ± 10%, 45-65Hz
- 115 V AC ± 10%, 45-65Hz
- 24 V DC ± 25% Relay output : 1 o r 2 p o t e n t i a l - f r e e c h a n g e o v e r
contact(s)
Switching capacity : max. 250V AC, max. 2 A
: ATEX : PTB 00 ATEX 2081
: ATEX : PTB 00 ATEX 2081
: ATEX : PTB 00 ATEX 2043
: ATEX : PTB 00 ATEX 2080
: ATEX : PTB 00 ATEX 2042
[Ex ia] IIC; group II; category (1)GD
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7.3 Dimensions and weights

F7.EPS
F8.EPS
F13.EPS
<7. TECHNICAL DATA>
7- 11
Fig. 7-2 Version without valve Fig. 7-3 Version with ange connection
Fig. 7-4 Back view with mounting
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F9.EPS
Cutting ring
F12.EPS
Cutting ring
<7. TECHNICAL DATA>
Fig. 7-5 Version with inlet valve
Fig. 7-6 Version with outlet valve
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<7. TECHNICAL DATA>
Cutting ring
G or NPT thread approx. 135
approx. 113 approx. 60
F10.eps
ENG-018554
Cutting ring
G or NPT thread approx. 135
approx. 113 approx. 60
F11.eps
ENG-018555
7- 13
Fig. 7-7 Version with inlet valve and inlet controller
Fig. 7-8 Version with outlet valve and back pressure controller
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<7. TECHNICAL DATA>
CONNECTION TYPES
TABLE 7-12
Size a b c
Thread
Cone 31-51
G 1/4 G 3/8 G 1/4 G 1/4
1/4 NPT 3/8 NPT 1/4 NPT 1/4 NPT
Cone
52-53
Cone
31-53
Cone
31-51
INSTALLATION LENGTHS DEPENDING ON CONNECTION TYPE AND SIZE
TABLE 7-13
L1 L2 L3
Process connection Size Cone 31-51 Cone 52-53 Cone 31-53 Cone 31-51
6 mm 178 mm ------ 54.5 mm 164 mm
Cutting ring
Nozzle
8 mm 172 mm ------ 51.5 mm 161 mm
10 mm 174 mm ------ 52.5 mm 162 mm
12 mm 174 mm 177 mm 52.5 mm 162 mm
6 mm 182 mm ------ 56.5 mm 166 mm
8 mm 182 mm ------ 56.5 mm 166 mm
WEIGHTS
TABLE 7-14
without valve with valve with controller
Weight approx. 600g approx. 1000g approx. 1800g
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7.4 Temperature curves

50 55 60 65 70
75
100
200
Illustration of maximum allowable operation temperature depending on ambient temperature for Rotameter type RAKD
Max. operation temperature [°C]
Ambient temperature [°C]
75 80
125
150
175
225
250
275
Version without valve Version with valve
F6.EPS
<7. TECHNICAL DATA>
7- 15
Fig. 7-9
For option /KS1 or /KN1 (Ex-i-versions ATEX) the maximum values for ambient and process temperature according to
the respective temperature class mentioned in g. 5 and table 7 must be regarded.
For option /ES1 (Ex-i-versions IECEx) the maximum values for ambient and process temperature according to the
respective temperature class mentioned table 9 must be regarded.
For option /NS1 (Ex-i-version NEPSI) the maximum values for ambient and process temperature according to the
respective temperature class mentioned in table 11 must be regarded.
The minimum ambient temperature is -25°C. Lower temperatures on request.
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<7. TECHNICAL DATA>
Blank Page
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
WARNING
8-1

8. Explosion-protected Type Instruments

8.1 General

To ensure intrinsically safety, it is not permitted to repair or to modify the electronic transmitter and the limit
switches
The RAKD with electronic transmitter type "E" as well the limit switches (option/ K_) are intrinsically safe devices.
The RAKD with option /KS1 is ATEX certied for hazardous areas of zone 1 (category 2) and zone 2 (category
3). It is not homologated for zone 0 areas (category 1) (option /KS1 for category 2 and 3, option /KS3 and /KN1 only for category 3G). The classication in brackets is given according to the EU regulation ATEX, 94/9/EG.
The limit switches but not the electronic transmitter are ATEX dust proof certied (option /KS2).
The RAKD with option /KS1 and /ES1 are certied for hazardous areas of EPL Gb. The RAKD with option /KS3 and /ES3 are for use in hazardous areas of EPL Gc.
The RAKD with option /FS1 is FM- certied for USA and Canada for hazardous classied locations Class I,
Division 1, Groups A, B, C, D.
The RAKD with option /NS1 is NEPSI- certied.
The RAKD must be connected to an intrinsically safe, certied power supply with a maximum voltage and output power below the maximum values of the RAKD (refer to Technical data, section 7). The combined internal inductance and capacity of the RAKD and connecting cables must be less than the permitted external
inductance and capacity of the power supply. Accordingly, the limit switches and the pulse output have to be
connected to intrinsically safe, certied isolating switching ampliers. The relevant maximum safety values must
be heeded at all times. Power supply and transmitter relay are assigned devices and should be installed outside any hazardous zone.
Especially in the case of high uid temperatures, heated metering tubes or heat radiation by heat tracing, make sure that the temperature in the indicator housing does not exceed the permissible maximum ambient temperature of the transmitter (refer to Technical data, section 7).
To ensure intrinsically safety, it is not permitted to repair or modify the measuring transmitter.
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8-2
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8.2 Intrinsically safe ATEX certied RAKD (/KS1)

8.2.1 Technical data

EC-Type Examination Certicate Nr.: KEMA 00ATEX1037X Used standards:
- EN 60079-0: 2009
- EN 60079-11: 2007
The RAKD with electronic transmitter and limit switches is an intrinsically safe device. This device is certied for
hazardous areas of zone 1 (category 2) and zone 2 (category 3). It is not homologated for zone 0 (category 1).
The classications in brackets are given according to EC- Directive 94/9/EG (ATEX).
Identication in accordance with regulation 94/9/EG (ATEX) :
II 2 G
Data of electronic transmitter type -E :
Type of protection : Intrinsically safe Ex ia IIC T6-T4 Gb Ambient temperature: -25°C ... +65°C Safety relevant maximum values: Supply (current output): Maximum voltage: Ui= 30 V Maximum current: Ii = 100 mA Maximum power: Pi = 750 mW Inner inductance: Li = 0.73 mH Inner capacity: Ci = 2.4 nF Pulse output: Maximum voltage: Ui= 16 V Maximum current: Ii = 20 mA Maximum power: Pi = 64 mW Inner inductance: Li = 0 mH Inner capacity: Ci = 0 nF
Data of limit switches :
Type of protection : Intrinsically safe Ex ia IIC T6 Gb Safety relevant maximum values: SC2-NO (/K1.../K3) SJ2-S.N (/K6.../K10) Type 2 Type 3 Type 2 Type 3 Maximum voltage: Ui = 16 V 16 V Ui = 16 V 16 V Maximum current: Ii = 25 mA 52 mA Ii = 25 mA 52 mA Maximum power: Pi = 64 mW 169 mW Pi = 64 mW 169 mW
Inner inductance: Li = 0.15 mH 0.15 mH Li = 0.1 mH 0.1 mH Inner capacity: Ci = 150nF 150nF Ci = 30nF 30nF
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Temperature specication:
Table 8-1
Congura-
tion
Transmitter
4-20mA / Pulse
Limit switch(es) type 2
Limit switch(es) type 3
Max.
ambient
temperature
65°C 65°C
50°C 80°C
45°C 100°C T5
38°C 135°C T4
65°C 65°C T6
80°C 80°C
59°C 100°C
100°C 100°C
73°C 135°C
24°C 65°C T6
37°C 80°C
34°C 100°C
57°C 80°C
48°C 135°C
Max.
process tem-
perature
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
Temperature
class
T6
T5
T4
T5
T454°C 100°C
8-3
For the conguration where a transmitter is combined with limit switches, the temperature class is determined by
the
most restrictive combinations of maximum ambient temperature
and maximum process temperature.
Description of limit switch type 2 and 3 see ATEX certicates from Pepperl & Fuchs:
- PTB 99 ATEX 2219X ( SC2-NO) for /K1 to /K3
- PTB 00 ATEX 2049X (SJ2-S.N) for /K6 to /K10
Intrinsic safe power supply for the electronic transmitter :
The power supply for the electronic transmitter is an associated apparatus that may not be installed in the haz­ardous area, and it may not exceed the safety relevant maximum values for voltage, current and power of the
electronic transmitters as specied above.
For example the type RN221N-B1 (option (U__) according certicate PTB 00 ATEX 2018 can be used.
Intrinsic safe power supply for the limit switches :
The power supply (transmitter relay) for the limit switches is an associated apparatus that may not be installed in the hazardous area, and it may not exceed the safety relevant maximum values for voltage, current and power of
the connected limit switch as specied above.
For example the type KFA6-SR2-Ex... (option (W2_) according certicate PTB 00 ATEX 2081 (230V AC supply) or the type KFD2-SR2-Ex... (option (W4_) according certicate PTB 00 ATEX 2080 (24V DC supply) can be
used.
All Rights Reserved. Copyright © 2003, Rota Yokogawa
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
8-4
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-
o
o
o
o
o
-
+
-
+
~ ~
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
BU
2
BN
BU
BN
1
2
1
10
12
6
4
3
1
11
7
8
9
14 15
MIN
F
MAX
S
T
U
Hazardous Area
Safe Area
F3.EPS
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
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I +
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BU
1 K
15 K
2
1
2
3
1
14
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9
15
BN
1
1
2
L/+N/-
O -
O+
S
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U
F
G
T
Hazardous Area Safe Area

8.2.2 Installation

<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
Fig. 8-1 Ex-Version acc. ATEX (Option /KS1) with 2 limit switches and transmitter relay
Fig. 8-2 Ex-Version acc. ATEX (Option /KS1) with electronic transmitter in combination with
power supply and additional limit switch or pulse output with transmitter relay
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-5
8.3 Intrinsically safe IECEx certied RAKD (/ES1)

8.3.1 Technical data

Certicate Nr.: IECEx DEK 12.0003X Used standards:
- IEC 60079-0: 2011
- IEC 60079-11: 2011
The RAKD with electronic transmitter and limit switches is an intrinsically safe device. This device is certied for
EPL Gb.
Data of electronic transmitter type -E :
Type of protection : Intrinsically safe Ex ia IIC T6 -T4 Gb Ambient temperature: -25°C ... +65°C Safety relevant maximum values: Supply (current output): Maximum voltage: Ui= 30 V Maximum current: Ii = 100 mA Maximum power: Pi = 750 mW Inner inductance: Li = 0.73 mH Inner capacity: Ci = 2.4 nF Pulse output: Maximum voltage: Ui= 16 V Maximum current: Ii = 20 mA Maximum power: Pi = 64 mW Inner inductance: Li = 0 mH Inner capacity: Ci = 0 nF
Data of limit switches :
Type of protection : Intrinsically safe Ex ia IIC T6 Safety relevant maximum values: SC2-NO (/K1.../K3) SJ2-S.N (/K6.../K10) Type 2 Type 3 Type 2 Type 3 Maximale Spannung: Ui = 16 V 16 V Ui = 16 V 16 V Maximaler Strom: Ii = 25 mA 52 mA Ii = 25 mA 52 mA Maximale Leistung: Pi = 64 mW 169 mW Pi = 64 mW 169 mW Innere Induktivität: Li = 0.15 mH 0.15 mH Li = 0.1 mH 0.1 mH Innere Kapazität: Ci = 150nF 150nF Ci = 30nF 30nF
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
Temperature specication:
Table 8-2
Congura-
tion
Transmitter
4-20mA / Pulse
Limit switch(es) type 2
Limit switch(es) type 3
Max.
ambient
temperature
65°C 65°C
50°C 80°C
45°C 100°C T5
38°C 135°C T4
65°C 65°C T6
80°C 80°C
59°C 100°C
100°C 100°C
73°C 135°C
24°C 65°C T6
37°C 80°C
34°C 100°C
57°C 80°C
48°C 135°C
Max.
process tem-
perature
Temperature
class
T6
T5
T4
T5
T454°C 100°C
For the conguration where a transmitter is combined with limit switches, the temperature class is determined by
the
most restrictive combinations of maximum ambient temperature
and maximum process temperature.
Description of limit switch type 2 and 3 see ATEX certicates from Pepperl & Fuchs:
- IECEx PTB 11.0091X (SC2-NO) for /K1 to /K3
- IECEx PTB 11.0092X (SJ2-S.N) for /K6 to /K10
Intrinsic safe power supply for the electronic transmitter :
The power supply for the electronic transmitter is an associated apparatus that may not be installed in the hazardous area, and it may not exceed the safety relevant maximum values for voltage, current and power of the electronic transmitters as specied above. The internal capacity or inductivity of RAKD inclusive cable may not exceed the external capacity or inductivity of the power supply. For example the type RN221N-B1 (Option /U__) with certicate PTB 00 ATEX 2018 can be used.
Intrinsic safe power supply for the limit switches :
The power supply (transmitter relay) for the limit switches is an associated apparatus that may not be installed in the hazardous area, and it may not exceed the safety relevant maximum values for voltage, current and power of
the connected limit switch as specied above.
For example the type KFA6-SR2-Ex... (option (W2_) according certicate IECEx PTB 11.0031 (230V AC supply) or the type KFD2-SR2-Ex... (option (W4_) according certicate IECEx PTB 11.0034 (24V DC supply) can be used.
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
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Limit switch SC2-NO type 2
I = 25mA P = 64mW
L = 0.15mH
C = 150nF
IECEx DEK 12.0003X
Ex ia IIC T6...T4 Gb U = 16V
EN 60947-5-6 (NAMUR)
Limit switch
RAKD - T80
IECEx PTB 11.0031X
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
Power supply 230V AC
Limit switch MIN
Limit switch MAX
BU
2
BN
BU
BN
1
2
1
10
12
6
4
3
1
11
7
8
9
14 15
MIN
F
MAX
S
T
U
Hazardous Area
Safe Area
F4.EPS
Limit switch / Puls
Ex ia IIC T6...T4 Gb U = 16V
P = 64mW
I = 20mA
C = 0nF L = 0mH
Puls output
Ex ia IIC T6...T4 Gb
U = 10.6V
L = 0.15mH
C = 150nF
U = 16V I = 25mA P = 64mW
L = 97mH
C = 2320nF
I = 19.1mA P = 51mW
Limit switch SC2-NO type 2
EN 60947-5-6 (NAMUR)
Limit switch or Pulse output
KFA6-SR2-Ex1.W
KFA6-SR2-Ex1.W
Transmitter relay
[EEx ia] IIC
4-20mA output
I = 100mA
U = 30V
L = 0.73mH
C = 2.4nF
P = 0.75W
Ex ia IIC T6...T4 Gb
RAKD-E80 Option /ES1
Transmitter power supply certified acc. IECEx
Output 4-20mA
Power supply 230V AC
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L+
-
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BU
1 K
15 K
2
1
2
3
1
14
7
8
9
15
BN
1
1
2
+/~
1
IN
-/~ 5
6
IN
10
OUT
4
OUT
9
S
S
U
F
G
T
T
Hazardous Area Safe Area
IECEx DEK 12.0003X IECEx DEK 12.0003X IECEx PTB 11.0031X
IECEx DEK 12.0003X

8.3.2 Installation

<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-7
Fig. 8-3 Ex-Version acc. IECEx (Option /ES1) with 2 limit switches and transmitter relay
Fig. 8-4 Ex-Version acc. IECEx (Option /ES1) with electronic transmitter in combination with
power supply and additional limit switch or pulse output with transmitter relay
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
8-8
current limitation R1 S1 = 200 mA F
+ Po = 0.7 W to Io = 100 mA
D1 = 27 V 5% 24V DC Uo = 28.35 V
“nL” voltage - C
o
= 260 nF
limitation Lo = 8.0 mH
- R
1=
300 W
,
5%, 3W
F1.EPS
RAKD
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>

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

Der RAKD with /KN1 is a unit with protection „nL”.
It may be used in hazardous areas of zone 2 (category 3)
The classication in brackets is given according to the EC- Directive ATEX, 94/9/EG. This version is same hardware as intrinsically safe type.
Protection : Ex nL IIC T6 X n = non incendive L = unit with limited energy
Explosion proof : Ex nL IIC T6 X protection „n”; group II ; category 3GD
Marking :
II 3 GD
Ambient temperature : -25 °C < Ta < 65 °C :
Entity parameter :
Table 8-3
Analog output Pulse output /CP Limit switch
/K1 ... /K3
Ui [V] 30 16 16 16
Ii [mA] 100 20 25 25
Pi [mW] 750 64 64 64
Li [µH] 730 0 150 100
Ci [nF] 2.4 0 150 30
Limit switch
/K6 ... /K10
Protection circuit for a power supply to meet the maximum values :

8.5 Dust proofed limit switches (ATEX) (/KS2)

Certication by Pepperl & Fuchs :
EC-Type Examination Certicate Nr.: ZELM 02 ATEX 0128X Identication in accordance with regulation 94/9/EG (ATEX) :
II 1 D
Maximum surface temperature : 108°C. The dust explosion proof for the limit switches is only available if ordered without electronic transmitter (only with housing type "T").
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Type of protection : Ex iaD 20
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
current limitation R1 S1 = 200 mA F
+ Po = 0.7 W to Io = 100 mA
D1 = 27 V 5% 24V DC Uo = 28.35 V
“ic” voltage - C
o
= 260 nF
limitation Lo = 8.0 mH
- R
1=
300 W
,
5%, 3W
F2.EPS
RAKD
8-9

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

The RAKD with /KS3 or /ES3 is a unit with protection „ic”.
It may be used in hazardous areas of category 3G.
This version is same hardware as intrinsically safe "ia" type (/KS1, /ES1).
Data of electronic transmitter type -E :
Type of protection : Intrinsically safe Ex ic IIC T6-T4 Gc Ambient temperature: -25°C ... +65°C Safety relevant maximum values: Supply (current output): Maximum voltage: Ui= 30 V Maximum current: Ii = 100 mA Maximum power: Pi = 750 mW Inner inductance: Li = 0.73 mH Inner capacity: Ci = 2.4 nF Pulse output: Maximum voltage: Ui= 16 V Maximum current: Ii = 20 mA Maximum power: Pi = 64 mW Inner inductance: Li = 0 mH Inner capacity: Ci = 0 nF
Protection circuit for a power supply to meet the maximum values :
Data of limit switches :
Type of protection : Intrinsically safe Ex ic IIC T6 Gc Safety relevant maximum values: SC2-NO (/K1.../K3) SJ2-S.N (/K6.../K10) Type 2 Type 3 Type 2 Type 3 Maximale Spannung: Ui = 16 V 16 V Ui = 16 V 16 V Maximaler Strom: Ii = 25 mA 52 mA Ii = 25 mA 52 mA Maximale Leistung: Pi = 64 mW 169 mW Pi = 64 mW 169 mW Innere Induktivität: Li = 0.15 mH 0.15 mH Li = 0.1 mH 0.1 mH Innere Kapazität: Ci = 150nF 150nF Ci = 30nF 30nF
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WARNING
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>

8.7 Intrinsically safe FM / CSA (USA + Canada) components (/FS1, /CS1)

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

Data of limit switches (FM-approval):
The limit switches are intrinsically safe devices. They are certied by Pepperl & Fuchs for: Intrinsically safe : Cl. I, Div. 1, GP. A, B, C, D T6 Ta=60°C Cl. II, Div. 1, GP. E, F, G
Cl. III, Div. 1
Non incendive: Cl. I, Div. 2, GP. A, B, C, D T5 Ta=50°C Cl. II, Div. 1, GP. E, F, G
Cl. III, Div. 1
Maximum Entity Field Wiring Parameters : see FM-control drawing 116-0165 on page 8-11 and 8-12 for intrinsic safety see FM-control drawing 116-0155 on page 8-13 for non incendive

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

Data of limit switches (CSA-approval):
The limit switches are intrinsically safe devices. They are certied by Pepperl & Fuchs for: Intrinsically safe : Cl. I, Div. 1, GP. A, B, C, D Cl. II, Div. 1, GP. E, F, G
Cl. III, Div. 1
Maximum Entity Field Wiring Parameters : see CSA drawing 116-0047 on page 8-14 and 8-15
Only in combination with power supply option /WxA or /WxB.
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
Dieses Dokument enthält sicherheitsrelevante Angaben. Es darf nicht ohne Absprache mit dem Normenfachmann geändert werden!
This document cont ains safety-relevant information. It must not be altered without the authorization of the norm expert!
Confidential according to ISO 16016 Only valid as long as releas ed in EDM or with a valid production documentation! scale: 1:1 date: 2010-jun-03
respons. US.DRL
approved US.DW R
116-0165F
Twinsburg
Control Drawing
NAMUR SENSORS – FM
change notice
150- 1915
norm US.GAP sheet 1 of 8
HAZARDOUS (CLASSIFIED) LOCATION NONHAZARDOUS LOCATION Class I, Division 1, Groups A, B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1 or Class I, Zone 0, Groups IIC T6 (Ta = 60ºC)
Notes:
1. For installation in a Division 1 hazardous (classified) location, the wiring must be in accordance with the National Electrical Code, NFPA 70, Article 504. For installation in a Zone 0 hazardous (classified) location, the wiring must be in accordance with the National Electrical Code, NFPA 70, Article 505. For additional information refer to ISA RP-12.6.
2. The Entity Concept allows interconnection of intrinsically safe and associated apparatus not specifically examined in combination as a system when the approved values of Voc ( or Uo) and Isc (or Io) for the associated apparatus are less than or equal to Vmax (or Ui) and Imax (or Ii) for the intrinsically safe apparatus and the approved values of Ca (or Co) and La (or Lo) for the associated apparatus are greater than Ci + Ccable, Li + Lcable, respectively for the intrinsically safe apparatus.
3. Barriers shall not be connected to any device that uses or generates in excess of 250V rms or DC unless it has been determined that the voltage is adequately isolated from the barrier.
4. Note associated apparatus with only Zone 1 approved connections limits the mounting of the sensors to Zone 1.
5. ‘a’ in model number indicates option not affecting safety.
6. NAMUR sensors are also nonincendive for Class I, Division 2, Groups A,B,C, and D; Class II, Division 1, Groups E,F, and G; Class III, Division 1; Class I, Zone 2, Groups IIC, IIB, IIA T5 hazardous (classified) locations and need not be connected to an associated apparatus when installed in accordance with Control Drawing 116-0155.
7. The correlation between type of connected circuit, maximum permissible ambient temperature and temperature class are indicated at the top of each Table.
8. Model number NMB8-SAE16GM27-N1-FE-V1 approved for Class I, Division 1, Groups C and D T4 (Ta = 85ºC). See Table 12.
9. Warning - Equipment with non-metallic enclosures shall not be installed in a location where the external
conditions are conducive to the build-up of electrostatic charge on such surfaces. The equipment shall only be cleaned with a damp cloth.
Pepperl+Fuchs, Inc. “NAMUR” output proximity sensor. See Tables for entity parameters
Any FM certified a
ssociated apparatus
with applicable division and group or
zone and group approval and with entity parameters:
DIVISIONS
ZONES Voc Vmax Uo Ui Isc Imax Io Ii Ca Ci+Ccable Co Ci+Ccable La Li+Lcable Lo Li+Lcable
Control Drawings
FM: Limit switches intrinsically safe (1)
8-11
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00
8-12
Dieses Dokument enthält sicherheitsrelevante Angaben. Es darf nicht ohne Absprache mit dem Normenfachmann geändert werden!
This document contains safety-relevant information. It must not be altered without the authorization of the norm expert!
Confidential according to ISO 16016 Only valid as long as released in EDM or with a valid production documentation! scale: 1:1 date: 2010-jun-03
respons. US.DRL
approved US.DWR
116-0165F
Twinsburg
Control Drawing
NAMUR SENSORS – FM
change notice
150- 1915
norm US.GAP sheet 7 of 8
NJ 15-30GM-N...
140 100 76 91 100 73 88 100 62 77 81 54 63 63
NJ 25-50-N...
150 140 73 88 100 69 84 100 51 66 80 39 54 61
NJ 20-40-N...
140 140 73 88 100 69 84 100 51 66 80 39 54 61
Table 10 – INDUCTIVE RING SENSORS
Typ 1 Typ 2 Typ 3 Typ 4 Ui = 16 V Ui = 16 V Ui = 16 V Ui = 16 V Ii = 25 mA Ii = 25 mA Ii = 52 mA Ii = 76 mA Pi = 34 mW Pi = 64 mW Pi = 169 mW Pi = 242 mW
Model
Ci/ nF
Li/
µH
T6 T5 T4-T1 T6 T5 T4-T1 T6 T5 T4-T1 T6 T5 T4-T1
RC10-a-N3a 90 120 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RC10-a-N0a 150 100 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RC15-a-N0-a 150 100 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RC15-a-N3a 90 70 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ10-Na 30 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ10-a-Na 30 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ10-Bia 90 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ10-a-Bia 90 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ15-Na 130 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ15-a-Na 130 20 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ15-Bia 90 50 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ15-a-Bia 90 50 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ21-Na 30 25 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ21-Bia 70 50 75 90 100 70 85 100 55 70 90 N/A N/A N/A
RJ43-Na 40 50 75 90 100 70 85 100 55 70 90 N/A N/A N/A
TABLE 11 – INDUCTIVE SLOT SENSORS
Typ 1 Typ 2 Typ 3 Typ 4 Ui = 16 V Ui = 16 V Ui = 16 V Ui = 16 V Ii = 25 mA Ii = 25 mA Ii = 52 mA Ii = 76 mA Pi = 34 mW Pi = 64 mW Pi = 169 mW Pi = 242 mW
Model
Ci/ nF
Li/ µH
T6 T5 T4-T1 T6 T5 T4-T1 T6 T5 T4-T1 T6 T5 T4-T1
SC2-N0a 150 150 55 67 95 48 60 88 23 35 63 6 18 46
SC3.5a-N0a 150 150 56 68 96 49 61 89 28 40 68 13 25 53
SC3.5-N0-Ya 150 150 55 67 95 48 60 88 23 35 63 6 18 46
SJ1.8-N-Ya 30 100 73 88 100 67 82 100 45 60 78 30 45 57
SJ2-Na 30 100 56 68 96 49 61 89 28 40 68 13 25 53
SJ2-SNa 30 100 73 88 100 66 81 100 45 60 78 30 45 57
SJ2-S1Na 30 100 73 88 100 66 81 100 45 60 78 30 45 57
SJ2.2-Na 30 100 73 88 100 67 82 100 45 60 78 30 45 57
SJ3.5-a-Na 50 250 56 68 96 49 61 89 28 40 68 13 25 53
SJ3.5-H-a 50 250 73 88 100 66 81 100 45 60 89 30 45 74
SJ3.5-SNa 30 100 73 88 100 66 81 100 45 60 89 30 45 74
SJ3.5-S1Na 30 100 73 88 100 66 81 100 45 60 89 30 45 74
SJ5-a-Na 50 250 56 68 96 49 61 89 28 40 68 13 25 53
SJ5-Ka 50 550 55 67 95 48 60 88 25 37 65 9 21 49
SJ10-Na 50 100 55 67 95 48 60 88 25 37 65 9 21 49
SJ15-Na 150 1200 55 67 95 48 60 88 25 37 65 9 21 49
SJ30-Na 150 1250 55 67 95 48 60 88 25 37 65 9 21 49
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
FM: Limit switches intrinsically safe (2)
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FM: Limit switches non incendive
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-13
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
CSA: limit switches intrinsically safe (1)
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CSA: limit switches intrinsically safe (2)
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-15
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<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8.8 Intrinsically safe NEPSI (China) certied RAKD (/NS1)
Certicate No. : GYJ101552
Type of protection : Intrinsically safe Ex ia
Group : IIC
Temperature Class : T6
Ambient temperature : -25°C ... +65 °C Safety relevant maximum values of electronic transmitter : Maximum voltage : Ui = 30 V Maximum current : Ii = 100mA Maximum power : Pi = 750 mW Inner inductance : Li = 0.73 mH Inner capacity : Ci = 2.4nF Pulse output: Maximum voltage : Ui= 16 V Maximum current : Ii = 20 mA Maximum power : Pi = 64 mW Inner inductance : Li = 0 mH Inner capacity : Ci = 0nF
Data of limit switches option /K1 to /K10 :
The following table shows the maximum safety parameters for intrinsic safe limit switches according the certicate NEPSI GYJ06542X :
Standard
/K1 ... /K3
Type 2 Type 3 Type 2 Type 3
Ui [V] 16 16 16 16
Ii [mA] 25 52 25 52
Pi [mW] 64 169 64 169
Li [µH] 150 150 250 250
Ci [nF] 150 150 50 50
Max. ambient temperature for T6 [°C] 66 45 66 45
Max. ambient temperature for T5 [°C] 81 60 81 60
Max. ambient temperature for T4-T1 [°C] 100 89 100 89
Fail Safe
/K6 ... /K10
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WARNING
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APPENDIX 1. Safety Instrumented
Systems Installation
The contents of this appendix are cited from exida.com safety manual on the Rotameter RAKD Flowmeter specically observed for the safety transmitter purpose. When using the RAKD for Safety Instrumented Systems (SIS) application, the instructions and procedures in this section must be strictly followed in order
to preserve the meter for that safety level.

A1.1 Scope and Purpose

This document provides an overview of the user responsibilities for installation and operation of the Rota Yokogawa RAKD variable area ow meter in order to maintain the designed safety level. Items that will be addressed are proof testing, repair and replacement of the ow meter, reliability data, lifetime, environmental
and application limits, and parameter settings.

A1.2 Using RAKD for a SIS Application

A1.2.1 Safety Function

Suitable for use in Safety Instrumented Systems are the versions listed in table 1 only. The safety related
data listed in this manual does not apply to other versions of RAKD.
[V1] RAKD standard – RAKD[][] - [][]SS - [][]NNN - T8[]NNN
[V2] RAKD with head/valve– RAKD[][] - [][]SS - [][]V[][] - T8[]NNN
[V3] RAKD with head/valve/controller – RAKD[][] - [][]SS - [][]V[][] - T8[]NNN/R[]
Table 1 Versions of RAKD suitable for Safety Instrumented Systems
This variable area ow meter is intended for use as a volume ow monitoring component in a Safety Instrumented System. It has inductive limit switches. The ow meter may be used with the limit switches to feed signals to a logic solver that is part of the safety instrumented function (SIF) as shown in Figure 1. The
fault annunciation mechanism is a trip of one of the limit switches. In order to take credit for the automatic
diagnostics in the ow meter, this annunciation mechanism must be connected.
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Figure 1 Example Safety Instrumented Function
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A1.2.2 Diagnostic Response Time

In case of a fault the limit switches will go to their safe fail state immediately.

A1.2.3 Setup

A setup of the ow meter is not required. Installation shall be done according to the manual.

A1.2.4 Proof Testing

The objective of proof testing is to detect failures within the ow meter that are not detected by the diagnostics of the ow meter. Of main concern are undetected failures that prevent the safety instrumented
function from performing its intended function.
The frequency of the proof tests (or the proof test interval) is to be determined in the reliability calculations for the safety instrumented functions for which the ow meter is applied. The actual proof tests must be
performed more frequently or as frequently as specied in the calculation in order to maintain required safety integrity of the safety instrumented function.
The following tests need to be specically executed when a proof test is performed. The results of the proof
test need to be documented and this documentation should be part of a plant safety management system.
Failures that are detected should be reported to Yokogawa.
Proof test for variable area ow meter RAKD with inductive limit switches:
Step Action
1
2
3
4
5
6
When all the tests listed above are executed a proof test coverage of approximately 99% of possible DU failures in the variable area ow meter RAKD can be claimed.
The following tools need to be available to perform proof testing:
Measurement instrument to verify output status of the limit switches
The person(s) performing the proof test of the Yokogawa RAKD variable area ow meter should be trained in SIS operations including bypass procedures, ow meter maintenance and company management of
change procedures.
Take appropriate action to avoid a false trip
Inspect the device for any visible damage, corrosion or contamination.
Force the variable area ow meter RAKD to reach a dened “MAX” threshold value and
verify that the inductive limit switch goes into the safe state.
Note: only applicable if RAKD is equipped with a “MAX” limit switch.
Force the variable area ow meter RAKD to reach a dened “MIN” threshold value and
verify that the inductive limit switch goes into the safe state.
Note: only applicable if RAKD is equipped with a “MIN” limit switch.
Restore the loop to full operation
Restore normal operation

A1.2.5 Repair and replacement

Maintenance information can be found in section 6, Maintenance of the User’s Manual Model RAKD Small Metal ROTAMETER, IM 01R01B30-00E-E.
If repair is to be performed with the process online the Rota Yokogawa RAKD variable area ow meter will need to be bypassed during the repair. The user should setup appropriate bypass procedures for that.
Contact the Yokogawa sales office if this instrument requires repair
The person(s) performing the repair and / or replacement of the Rota Yokogawa RAKD variable area ow
meter should have a sufficient skill level.
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A1.2.6 Startup Time

The ow meter will generate a valid signal within 0.5 seconds of power-on startup.

A1.2.7 Reliability data

A detailed Failure Mode, Effects, and Diagnostics Analysis (FMEDA) report is available from Rota Yokogawa with all failure rates and failure modes. Rota Yokogawa RAKD variable area ow meter is intended for use
in a Low Demand Mode. Low Demand Mode means the average interval between dangerous conditions occurs infrequently.
The Rota Yokogawa RAKD variable area ow meter is certied up to SIL2 for use in a simplex (1oo1) conguration, depending on the PFD
calculation of the entire Safety Instrumented Function.
AVG

A1.2.8 Lifetime limits

The expected lifetime of the Yokogawa Rota Yokogawa RAKD variable area ow meter is 10 years. The reliability data listed in 2.7 is only valid for this period. The failure rates of the Rota Yokogawa RAKD variable area ow meter may increase sometime after this period. Reliability calculations based on the data listed in A1.2.7 for Rota Yokogawa RAKD variable area ow meter lifetimes beyond 10 years may yield results that are too optimistic, i.e. the calculated Safety Integrity Level will not be achieved.

A1.2.9 Environmental limits

The environmental limits of Rota Yokogawa RAKD variable area ow meter are specied in the User’s Manual, Model RAKD Small Metal ROTAMETER, IM 01R01B30-00E-E.

A1.2.10 Application limits

The application limits of the Rota Yokogawa RAKD variable area ow meter are specied in the User’s Manual, Model RAKD Small Metal ROTAMETER, IM 01R01B30-00E-E. If the ow meter is used outside of
the application limits the reliability data listed in A1.2.7 becomes invalid.
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A1.3 Denitions and Abbreviations
A1.3.1 Denitions
Safety Freedom from unacceptable risk of harm
Functional Safety The ability of a system to carry out the actions necessary to achieve or to
maintain a dened safe state for the equipment / machinery / plant / apparatus under control of the system
Basic Safety The equipment must be designed and manufactured such that it protects
against risk of damage to persons by electrical shock and other hazards and
against resulting re and explosion. The protection must be effective under all
conditions of the nominal operation and under single fault condition
Verication The demonstration for each phase of the life-cycle that the (output) deliverables of the phase meet the objectives and requirements specied by the inputs to the phase. The verication is usually executed by analysis
and / or testing
Validation The demonstration that the safety-related system(s) or the combination of safety-related system(s) and external risk reduction facilities meet, in all respects, the Safety Requirements Specication. The validation is usually executed by testing
Safety Assessment The investigation to arrive at a judgment - based on evidence - of the safety
achieved by safety-related systems
Further denitions of terms used for safety techniques and measures and the description of safety related
systems are given in IEC 61508-4.

A1.3.2 Abbreviations

FMEDA Failure Mode, Effects and Diagnostic Analysis
SIF Safety Instrumented Function
SIL Safety Integrity Level
SIS Safety Instrumented System
SLC Safety Lifecycle
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A1.4 Assessment results

A1.4.1 Safety related parameters

The following results have been obtained from the assessment report Report No.: ROTA YOKOGAWA
08/07-23
Average PFD values have been calculated assuming a Diagnostic Coverage (DC) of 99%, a mission time of 10 years and a Mean Time To Restoration of 24 hours.
Table 2: Summary for RAKD ([V1]) with fail-safe limit switches 3 – Failure rates
 Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 132 FIT 174 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 62 FIT 108 FIT
SFF
MTBF 486 years 310 years
4
R002
Version V2, Revision R1; August
2010 issued by exida.
Prole 2 Prole 4
68.7% 64.1%
SIL AC
5
SIL2 SIL2
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 1730 899
DC 6% 15%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 6.60E-08 1/h 1.27E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 2.96E-04 PFDAVG = 1.37E-03 PFDAVG = 2.72E-03
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Table 3: Summary for RAKD ([V1]) with standard limit switches 7 – Failure rates
Prole 2 Prole 4
Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 163 FIT 205 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 101 FIT 147 FIT
4
SFF
62.4% 60.3%
MTBF 375 years 261 years
SIL AC
5
SIL2 SIL2
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 1730 899
DC 6% 15%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 6.60E-08 1/h 1.27E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 2.96E-04 PFDAVG = 1.37E-03 PFDAVG = 2.72E-03
Table 4: Summary for RAKD ([V2]) with fail-safe limit switches 3 – Failure rates
Prole 2 Prole 4
Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 162 FIT 215 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 84 FIT 139 FIT
4
SFF
66.3% 62.7%
MTBF 399 years 259 years
SIL AC
5
SIL2 SIL2
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 1297 723
DC 5% 12%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 8.80E-08 1/h 1.58E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 4.01E-04 PFDAVG = 1.86E-03 PFDAVG = 3.68E-03
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Table 5: Summary for RAKD ([V2]) with standard limit switches 7 – Failure rates
Prole 2 Prole 4
Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 192 FIT 246 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 123 FIT 178 FIT
4
SFF
61.5% 59.8%
MTBF 321 years 346 years
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SIL AC
5
SIL2 SIL1
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 899 579
DC 3% 10%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 1.27E-07 1/h 1.97E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 5.87E-04 PFDAVG = 2.72E-03 PFDAVG = 5.39E-03
Table 6: Summary for RAKD ([V3]) with fail-safe limit switches 3 – Failure rates
Prole 2 Prole 4
Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 232 FIT 334 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 164 FIT 256 FIT
4
SFF
58.9% 58.1%
MTBF 262 years 168 years
SIL AC
5
SIL1 SIL1
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 679 415
DC 2% 7%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 1.68E-07 1/h 2.57E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 7.83E-04 PFDAVG = 3.63E-03 PFDAVG = 7.18E-03
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Table 7: Summary for RAKD ([V3]) with standard limit switches 7 – Failure rate
Prole 2 Prole 4
Fail Safe Detected (λSD) 0 FIT 0 FIT
Fail Safe Undetected (λSU) 262 FIT 367 FIT
Fail Dangerous Detected (λDD) 4 FIT 19 FIT
Fail Dangerous Undetected (λDU) 203 FIT 295 FIT
4
SFF
56.7% 56.7%
MTBF 226 years 153 years
SIL AC
5
SIL1 SIL1
Safety metrics according to ISO 13849-1 6:
MTTFd (years) 551 364
DC 2% 6%
Category (CAT) CAT 1 CAT 1
Performance Level (required) PLr = c PLr = c
Performance Level (calculated) 2.07E-07 1/h 3.14E-07 1/h
T[Proof] = 1 year T[Proof] = 5 years T[Proof] = 10 years
PFDAVG = 9.69E-04 PFDAVG = 4.49E-03 PFDAVG = 8.89E-03
3
The switching contact output is connected to a fail-safe NAMUR amplier (e.g. Pepperl+Fuchs KF**-
SH-Ex1). The failure rates of the amplier are not included in the listed failure rates
4
The complete sensor subsystem will need to be evaluated to determine the overall Safe Failure
Fraction. The number listed is for reference only.
5
SIL AC (architectural constraints) means that the calculated values are within the range for hardware
architectural constraints for the corresponding SIL but does not imply all related IEC 61508 requirements
are fullled.
6
Depending on the application and possible external diagnostics a higher DCD and therefore also a
higher category might be possible to achieve.
7
The switching contact output is connected to a standard switching amplier (e.g. Pepperl+Fuchs KF**-
SR2-Ex*.W). The failure rates of the amplier are not included in the listed failure rates.
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Euroweg 2 3825 HD AMERSFOORT The Netherlands www.yokogawa.com/eu
YOKOGAWA ELECTRIC CORPORATION World Headquarters
9-32, Nakacho 2-chome, Musashino-shi Tokyo 180-8750 Japan www.yokogawa.com
YOKOGAWA CORPORATION OF AMERICA
2 Dart Road Newnan GA 30265 USA www.yokogawa.com/us
YOKOGAWA ELECTRIC ASIA Pte. LTD.
5 Bedok South Road Singapore 469270 Singapore www.yokogawa.com/sg
YOKOGAWA CHINA CO. LTD.
3F Tower D Cartelo Crocodile Building No.568 West Tianshan Road Changing District Shanghai, China www.yokogawa.com/cn
YOKOGAWA MIDDLE EAST B.S.C.(c)
P. O. Box 10070, Manama Building 577, Road 2516, Busaiteen 225 Muharraq, Bahrain www.yokogawa.com/bh
RotameterTM is a trademark of Rota Yokogawa GmbH & Co. KG, a subsidiary of Yokogawa Electric Corporation, Japan.
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