YOKOGAWA VY Series User manual

Vortex Flowmeter VY Series
ATEX Explosion Protection Type
IM 01F07A03-03EN
1st Edition
IM 01F07A03-03EN
User’s
Manual

IM 01F07A03-03EN
Vortex Flowmeter VY Series
ATEX Explosion Protection Type
IM 01F07A03-03EN 1st Edition
1st Edition: Feb. 2022 (KP)
All right Reserved Copyright © 2022. Yokogawa Electric Corporation
Contents
1. Introduction...................................................................................................1
2. Explosion Protection Type ..........................................................................3
2.1 Technical Data ...................................................................................................... 3
2.2 Cable Entry ........................................................................................................... 5
2.3 Installation ............................................................................................................ 5
2.4 Operation ............................................................................................................ 11
2.5 Maintenance and Repair ................................................................................... 11
2.6 Name Plate.......................................................................................................... 12
2.7 Specic Condition of Use ................................................................................. 13
Revision Information

IM 01F07A03-03EN
1
<1. Introduction> 1
1. Introduction
This manual provides the basic guidelines for
explosion protection type of Vortex Flowmeter VY
Series. For the items which are not covered in this
manual, read the applicable user’s manuals and
general specications as listed in IM 01F07A21-
01Z1 (Read Me First). To ensure correct use of
the product, read these manuals thoroughly and
fully understand how to operate the product before
maintaining it. For method of checking the model
and specications, read the general specications
GS 01F07A00-01EN.
Website address: http://www.yokogawa.com/d/doc/
These manuals can be downloaded from the
website of YOKOGAWA or purchased from the
YOKOGAWA representatives.
NOTE
When describing the model name like “VY###” in
this manual, “###” means any of the following.
For VY###:
015, 025, 040, 050, 080, 100, 150, 200, 250,
300, 400
Precautions Related to the Protection,
Safety, and Alteration of the Product
The following safety symbol marks are used in this
manual and product.
WARNING
A WARNING sign denotes a hazard. It calls
attention to procedure, practice, condition or the
like, which, if not correctly performed or adhered
to, could result in injury or death of personnel.
CAUTION
A CAUTION sign denotes a hazard. It calls
attention to procedure, practice, condition or the
like, which, if not correctly performed or adhered
to, could result in damage to or destruction of
part or the entire product.
IMPORTANT
An IMPORTANT sign denotes that attention
is required to avoid damage to the product or
system failure.
NOTE
A NOTE sign denotes information necessary
for essential understanding of operation and
features.
The following symbols are used in the product and
the manual to indicate the accompanying safety
precautions:
Functional grounding terminal
Direct current
Caution
This symbol indicates that the operator must read an
explanation in the user’s manual in order to avoid the
risk of injury or death of personnel or damage to the
product.
• For the protection and safe use of the product
and the system in which this product is
incorporated, be sure to follow the instructions
and precautions on safety that is stated in user's
manual as listed in IM 01F07A21-01Z1 (Read
Me First) whenever you handle the product.
Take special note that if you handle the product
in a manner that violated these instructions,
the protection functionality of the product
may be damaged or impaired. In such cases,
YOKOGAWA does not guarantee the quality,
performance, function, and safety of product.
• Do not modify this product.
• The product should be disposed of in accordance
with local and national legislation/ regulations.

IM 01F07A03-03EN
2
<1. Introduction> 2
Regarding This User’s Manual
• This manual should be provided to the end
user.
• The contents of this manual are subject to
change without prior notice.
• All rights reserved. No part of this manual
may be reproduced in any form without
YOKOGAWA’s written permission.
• YOKOGAWA makes no warranty of any kind
with regard to this manual, including, but not
limited to, implied warranty of merchantability
and tness for a particular purpose.
• If any question arises or errors are found, or if
any information is missing from this manual,
inform the nearest YOKOGAWA sales o󰀩ce.
• The specications covered by this manual are
limited to those for the standard type under the
specied model number break-down and do not
cover custom-made products.
• Note that changes in the specications,
construction, or component parts of the
product may not immediately be reected in
this manual at the time of change, provided
that postponement of revisions will not cause
di󰀩culty to the user from a functional or
performance standpoint.
• This manual is intended for the following
personnel;
Engineers responsible for installation and wiring
of the product.
• To ensure correct use, read this manual and
the applicable user’s manuals as listed in IM
01F07A21-01Z1 (Read Me First) thoroughly
before starting operation. Read the general
specications as listed in IM 01F07A21-01Z1
(Read Me First) for its specication.
Trademark
• All the brands or names of Yokogawa
Electric’s products used in this manual are
either trademarks or registered trademarks of
Yokogawa Electric Corporation.
• All other company and product names
mentioned in this manual are trade names,
trademarks or registered trademarks of their
respective companies.
• In this manual, trademarks or registered
trademarks are not marked with ™ or ®.
For Safe Use of Product
For the protection and safe use of the product and
the system in which this product is incorporated,
be sure to follow the instructions and precautions
on safety that is stated in user's manual as listed in
IM 01F07A21-01Z1 (Read Me First) whenever you
handle the product.
Take special note that if you handle the product
in a manner that violated these instructions, the
protection functionality of the product may be
damaged or impaired. In such cases, YOKOGAWA
shall not be liable for any indirect or consequential
loss incurred by either using or not being able to
use the product.

IM 01F07A03-03EN
3
<2. Explosion Protection Type> 3
WARNING
VY### vortex owmeter (Integral Flowmeter
and Remote Sensor), and VY4A Remote
Transmitter are products which have been
certied as explosion protection type products if
model code for explosion protection is specied.
Strict limitations are applied to the structures,
installation locations, external wiring work,
maintenance and repairs, etc. of these products.
Su󰀩cient care must be taken, as any violation of
the limitations may cause dangerous situations.
Be sure to read this manual before handling the
explosion protection type products.
WARNING
If the terminal box cover and display cover are
locked by hexagon socket head cap screw, in the
case of opening the cover, use the hexagonal
wrench (nominal size 3).
Read the Maintenance Manual, IM 01F07A01-
02EN, for the procedure.
Before opening the cover, be sure to check that
the power of owmeter has been turned o󰀨.
Once the cover is closed, be sure to re-lock the
product.
Be sure to lock the cover with the screw by using
the hexagonal wrench after tightening the cover.
IMPORTANT
For multiple approval types:
For the installation, once a particular type of
protection is selected, any other type of
protection cannot be used. Apply a permanent
mark in the check box of the selected approval
type on the certication label to distinguish it from
unused approval types as follows;
e.g.)
Ex db ia IIC T6...T1 Gb
Ex ia tb IIIC T80°C...T440°C Db
Ex ia IIC T4...T1 Ga
2.1 Technical Data
Applicable Standard:
EN IEC 60079-0:2018
EN 60079-1:2014
EN 60079-11:2012
EN 60079-31:2014
EN 60529:1991 + A1:2000 + A2:2013
Certicate:
FM21ATEX0010X
Flameproof (Certication Code: KF2)
• Type of Gas Atmosphere Protection
(Integral Flowmeter)
II 2 G Ex db ia IIC T6...T1 Gb
(Remote Sensor)
II 1 G Ex ia IIC T6...T1 Ga
(Remote Transmitter)
II 2 (1) G Ex db ia [ia Ga] IIC T6 Gb
• Type of Dust Atmosphere Protection
(Integral Flowmeter)
II 2 D Ex ia tb IIIC T80°C...T440°C Db
(Remote Sensor)
II 2 D Ex ia IIIC T80°C...T440°C Db
(Remote Transmitter)
II 2 D Ex ia tb [ia Db] IIIC T70°C Db
• Ambient Temperature: *1
(Integral Flowmeter and Remote Transmitter)
−50°C ≤ Ta ≤ +60°C
(Remote Sensor)
T6, T80°C:−50°C ≤ Ta ≤ +40°C
T5, T95°C to T1, T440°C:−50°C ≤ Ta ≤ +60°C
• Maximum Surface Temperature and Process
Temperature: *1
(Integral Flowmeter and Remote Sensor)
T6, T80°C: −196°C to +80°C / [+78°C]
T5, T95°C: −196°C to +95°C / [+93°C]
T4, T130°C: −196°C to +130°C / [+128°C]
T3, T195°C: −196°C to +195°C / [+193°C]
T2, T290°C: −196°C to +290°C / [+288°C]
T1, T440°C: −196°C to +440°C / [+438°C]
[ ]: Built-in temperature sensor
• Atmospheric Pressure: 80 kPa to 110kPa
• Enclosure:
IP66/IP67 in accordance with only EN 60529
IP66 in accordance with EN IEC 60079-0
(for transmitter assembly)
• Pollution Degree: 2
• Overvoltage Category: I
2. Explosion Protection Type

IM 01F07A03-03EN
4
<2. Explosion Protection Type> 4
• Power Supply:
(Integral Flowmeter and Remote Transmitter)
10.5 to 42 V DC (Communication and I/O
Code: JA or JB)
• Current I/O:
(Integral Flowmeter and Remote Transmitter)
Output: 3.6 to 21.6 mA
Input: ≤ 21.6 mA
• Pulse Output:
(Integral Flowmeter and Remote Transmitter)
Output: ≤ 42 V DC, ≤ 120 mA
• Dielectric Strength:
(Remote Transmitter)
1500 V AC r.m.s., 1 min, 5 mA
Terminals: SUPPLY+, SUPPLY−, DOUT+,
DOUT−, AIN+ and AIN− to
BROWN, RED, ORANGE,
YELLOW, GREEN and BLUE
500 V AC r.m.s., 1 min, 5 mA
Terminals: BROWN, RED, ORANGE,
YELLOW, GREEN and BLUE to
Earth terminal
• Control Drawing: Read Section 2.3.
*1: The ambient temperature for the process temperature
under −50°C is shown as Figure 1.
−50
−50
Process temperature °C
Ambient temperature °C
−196
−20
Operating range
F0201.ai
Figure 1 The ambient temperature for the process
temperature under −50°C
Intrinsically safe (Certication Code: KS2,
Communication and I/O Code: JA or JB)
• Type of Gas Atmosphere Protection:
(Integral Flowmeter)
II 1 G Ex ia IIC T4...T1 Ga
(Remote Sensor)
II 1 G Ex ia IIC T6...T1 Ga
(Remote Transmitter)
II 1 G Ex ia IIC T4 Ga
• Ambient Temperature: *2
(Integral Flowmeter)
−55°C ≤ Ta ≤ +60°C
(Remote Sensor)
T6, T80°C:−55°C ≤ Ta ≤ +40°C
T5, T95°C to T1, T440°C:−55°C ≤ Ta ≤ +60°C
(Remote Transmitter)
−55°C ≤ Ta ≤ +80°C
• Process Temperature: *2
(Integral Flowmeter and Remote Sensor)
T6: −196°C to +80°C / [+78°C]
T5: −196°C to +95°C / [+93°C]
T4: −196°C to +130°C / [+128°C]
T3: −196°C to +195°C / [+193°C]
T2: −196°C to +290°C / [+288°C]
T1: −196°C to +440°C / [+438°C]
[ ] : Built-in temperature sensor
• Atmospheric Pressure: 80 kPa to 110 kPa
• Enclosure:
IP66/IP67 in accordance with only EN 60529
• Pollution Degree: 2
• Overvoltage Category: I
• Power Supply:
(Integral Flowmeter and Remote Transmitter)
10.5 to 30 V DC
• Current I/O:
(Integral Flowmeter and Remote Transmitter)
Output: 3.6 to 21.6 mA
Input: ≤ 21.6 mA
• Pulse Output:
(Integral Flowmeter and Remote Transmitter)
Output: ≤ 30 V DC, ≤ 80 mA
• Dielectric Strength:
(Integral Flowmeter)
500 V AC r.m.s., 1 min, 5 mA
Terminals: SUPPLY+, SUPPLY−, DOUT+,
DOUT−, AIN+ and AIN− to Earth
terminal
Terminals: SUPPLY+ and SUPPLY− to
DOUT+, DOUT−, AIN+ and AIN−
Terminals: DOUT+, and DOUT− to AIN+ and
AIN−
(Remote Transmitter)
500 V AC r.m.s., 1 min, 5 mA
Terminals: SUPPLY+, SUPPLY− to DOUT+,
DOUT−, AIN+ and AIN−
Terminals: DOUT+ and DOUT− to AIN+ and
AIN−
Terminals: SUPPLY+, SUPPLY−, DOUT+,
DOUT−, AIN+, AIN−, BROWN, RED,
ORANGE, YELLOW, GREEN and
BLUE to Earth terminal
Terminals: SUPPLY+, SUPPLY−, DOUT+,
DOUT−, AIN+ and AIN− to BROWN,
RED, ORANGE, YELLOW,
GREEN and BLUE
• Control Drawing: Read Section 2.3.
*2: The ambient temperature for the process temperature
under −55°C is shown as Figure 2.

IM 01F07A03-03EN
5
<2. Explosion Protection Type> 5
−55
−55
Process temperature °C
Ambient temperature °C
−196
−20
Operating range
F0202.ai
Figure 2 The ambient temperature for the process
temperature under −55°C
2.2 Cable Entry
Cable entry devices suitable for the thread
form and the size of the cable entries must be
used, according to the following marking on the
equipment.
Marking Screw form / Size
MISO M20 x 1.5 Female
NASME 1/2 NPT Female
Marking
F0203.ai
2.3 Installation
Read the Installation Manual, IM 01F07A01-
01EN (for VY### and VY4A), for basic installation
procedure.
• The equipment shall be installed in accordance
with EN 60079-14 and relevant local codes and
requirements.
• See the control drawing: DIE0023-A071.
Integral Flowmeter
• The surge absorber may be added to or
removed from the equipment.
Flameproof (Certication Code: KF2)
• Take care the following warning marking.
“WHEN THE PROCESS TEMP. IS ≥ 290°C,
USE THE HEAT-RESISTING CABLE AND
CABLE GLAND ≥ 75°C.”
Remote Transmitter
• The surge absorber may be added to or
removed from the equipment.
The grounding terminals are located on the inside
and outside of the terminal area.
Connect the cable to the grounding terminal in
accordance with wiring procedure (a) or (b).
(a) Internal grounding terminal
(b) External grounding terminal (Certication Code:
KF2)
(a)
(b)
F0204.ai

IM 01F07A03-03EN
6
<2. Explosion Protection Type> 6
Read the Control Drawing.
All wiring shall comply with local installation requirements.
• Integral Flowmeter
• Flameproof (Certication Code: KF2)
Yokogawa Electric Corporation Model VY Series
Title Control drawing (IECEx, ATEX)
No. DIE0023-A071 Page5Revision 0
Integral type
Certification: SF2, SU2, KF2, KU2, WF2, WU2, SV2, KV2, WV2
Communication and I/O: Dx, Jx, xD or xJ
Hazardous Location Non-Hazardous Location
*
1: Field device can be connected to AIN + line or AIN –line.
*
2: AIN terminals are not always provided.
E
lectrical parameters (SUPPLY / DOUT / AIN)
Model Code: VY###-###-########-#####@#
@: 0 to 9 @: A to Y
Um = 60 V DC Um = 250 V
Integral type
Temp. Class:
T6...T1 (IIC)
T80°C…T440°C (IIIC)
SUPPLY +
SUPPLY -
DOUT +
DOUT -
AIN +
AIN -
Control equipment
See note
Control equipment
See note
Control equipment
See note
Field device
See Note
F0205.ai

IM 01F07A03-03EN
7
<2. Explosion Protection Type> 7
• Intrinsically Safe (Certication Code: KS2, Communication and I/O Code: JA or JB)
Yokogawa Electric Corporation Model VY Series
Title Control drawing (IECEx, ATEX)
No. DIE0023-A071 Page1Revision 0Date 2021-01-15
Revised pages−
Integral type
Certification: SS2, SU2, KS2, KU2, WS2, WU2, ST2, SV2, KT2, KV2, WT2, WV2
Communication and I/O: Dx, Jx, xD or xJ
Hazardous Location Non-Hazardous Location
*
1: Field device can be connected to A
IN
+ line or A
IN
–line.
*
2: A
IN
terminals are not always provided.
E
lectrical parameters (SUPPLY / D
OUT
/ A
IN
)
Ui = 30 V
Ii = 200 mA
Pi = 1.0 W
Ci = 14.4 nF
Li = 1.9 μH
Integral type
Temp. class T4...T1 (IIC)
SUPPLY +
SUPPLY -
D
OUT
+
D
OUT
-
A
IN
+
A
IN
-
Associated
apparatus
See note
Associated
apparatus
See note
Associated
apparatus
See note
Field device
See Note
F0206.ai

IM 01F07A03-03EN
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<2. Explosion Protection Type> 8
• Remote Transmitter and Remote Sensor
• Flameproof (Certication Code: KF2)
Yokogawa Electric Corporation Model VY Series
Title Control drawing (IECEx, ATEX)
No. DIE0023-A071 Page6Revision 0
Remote transmitter
Certification: SF2, SU2, KF2, KU2, WF2, WU2, SV2, KV2, WV2
Communication and I/O: Dx, Jx, xD or xJ
Remote sensor
Certification: SF2, SU2, KF2, KU2, WF2, WU2, SV2, KV2, WV2
Communication and I/O: NN
Hazardous Location Non-Hazardous Location
*
1: Field device can be connected to AIN + line or AIN –line.
*
2: AIN terminals are not always provided.
E
lectrical parameters (SUPPLY / DOUT / AIN)
Model Code: VY4A-###-#####@#
@: 0 to 9 @: A to Y
Um = 60 V DC Um = 250 V
E
lectrical parameters (Remote Cable)
Cc ≤10000 pF, Lc ≤100 μH
Remote sensor
Temp. Class:
T6...T1 (IIC)
T80°C…T440°C (IIIC)
Remote Cable:
Remote transmitter
Temp. Class:
T6 (IIC)
T70°C(IIIC)
SUPPLY +
SUPPLY -
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
D
OUT
+
D
OUT
-
A
IN
+
A
IN
-
Control equipment
See note
Control equipment
See note
Control equipment
See note
Field device
See Note
F0207.ai

IM 01F07A03-03EN
9
<2. Explosion Protection Type> 9
• Intrinsically Safe (Certication Code: KS2, Communication and I/O Code: JA or JB)
Yokogawa Electric Corporation Model VY Series
Title Control drawing (IECEx, ATEX)
No. DIE0023-A071 Page2Revision 0
Remote transmitter
Certification: SS2, SU2, KS2, KU2, WS2, WU2, ST2, SV2, KT2, KV2, WT2, WV2
Communication and I/O: Dx, Jx, xD or xJ
Remote sensor
Certification: SS2, SU2, KS2, KU2, WS2, WU2, ST2, SV2, KT2, KV2, WT2, WV2
Communication and I/O: NN
Hazardous Location Non-Hazardous Location
*
1: Field device can be connected to AIN + line or AIN –line.
*
2: AIN terminals are not always provided.
E
lectrical parameters (SUPPLY / DOUT / AIN)
Ui = 30 V
Ii = 200 mA
Pi = 1.0 W
Ci = 14.4 nF
Li = 1.9 μH
E
lectrical parameters (Remote Cable)
Cc ≤10000 pF, Lc ≤100 μH
F0208.ai

IM 01F07A03-03EN
10
<2. Explosion Protection Type> 10
• Flameproof and Intrinsically Safe (All Certication Codes)
Yokogawa Electric Corporation Model VY Series
Title Control drawing (IECEx, ATEX)
No. DIE0023-A071 Page 9 Revision 0
N
otes:
1
. Except for FISCO power supply, the Associated Apparatus must be a linear power source.
2
. The remote transmitter and the remote sensor must be installed in the same earthing system.
3
. When more than one intrinsically safe apparatus are connected in an intrinsically safe circuit, total
4
. FISCO installation must be in accordance with IEC (EN) 60079-25.
Ci and Li of the connected apparatus must be considered.
F0209.ai

IM 01F07A03-03EN
11
<2. Explosion Protection Type> 11
2.4 Operation
When installation of explosion protection type
product, read installation manual, IM 01F07A01-
01EN (for VY### and VY4A).
• Take care the following warning marking.
“POTENTIAL ELECTROSTATIC CHARGING
HAZARD.”
In hazardous areas, avoid any actions which
generate electrostatic charges, such as rubbing
the equipment with a dry cloth.
Integral Flowmeter
Flameproof (Certication Code: KF2)
• Take care the following warning marking.
“AFTER DE-ENERGIZING, DELAY 3
MINUTES BEFORE OPENING.”
Intrinsically Safe (Certication Code: KS2,
Communication and I/O Code: JA or JB)
• The push-button switches on the display
must be operated only when an explosive
atmosphere is not present.
Remote Transmitter
Flameproof (Certication Code: KF2)
• Take care the following warning marking.
“AFTER DE-ENERGIZING, DELAY 3
MINUTES BEFORE OPENING.”
Intrinsically Safe (Certication Code: KS2,
Communication and I/O Code: JA or JB)
• The push-button switches on the display
must be operated only when an explosive
atmosphere is not present.
2.5 Maintenance and Repair
For maintenance of explosion protection type
product, read maintenance manual, IM 01F07A01-
02EN (for VY### and VY4A).
• A modication of the equipment would no
longer comply with the construction described
in the certicate documentation.
• Only personnel authorized by Yokogawa
Electric Corporation can repair the equipment.

IM 01F07A03-03EN
12
<2. Explosion Protection Type> 12
2.6 Name Plate
Example for name plates in case of “Flameproof,
Integral Flowmeter”
F0210.ai
*2) *1)
- MODEL: Specied model code
- SUFFIX: Su󰀩x codes of the model code
- STYLE: Specied style code
- SUPPLY: Power supply voltage of apparatus
- OUTPUT: Output signal of apparatus
- TAG NO.: Specied TAG No.
- K-FACTOR: Device-specic factor
- RANGE: Specied range
- PS: Fluid pressure of apparatus
- TS.: Fluid temperature of apparatus
- NO.: Manufacturing serial number
- : Name of manufacturer
- Tokyo 180-8750 JAPAN: address of manu-
facturer *1)
- No.: FM21ATEX0010X: Certicate number
- Ex db ia IIC T6...T1 Gb: Protection type and
maximum surface temperature for gas
- Ex ia tb IIIC T80°C...T440°C Db: Protection
type and maximum surface temperature for
dust
- Control drawing: Specied Control drawing
No.
- IP66/67: Enclosure protection code
- Um 60 V DC: Maximum r.m.s. a.c. or d.c.
voltage
- WARNING: Warning to apparatus
*1) “180-8750” is a zip code which represents the
following address: 2-9-32 Nakacho, Musashino-shi,
Tokyo Japan
*2) The product - producing country

IM 01F07A03-03EN
13
<2. Explosion Protection Type> 13
2.7 Specic Condition of Use
• Electrostatic charges on the non-metallic parts
(excluding glass parts) or coated parts of the
equipment shall be avoided.
• Read Section 2.1 for details of temperature
ratings.
Integral Flowmeter
Flameproof (Certication Code: KF2)
• Flameproof joints are not intended to be
repaired. Contact Yokogawa representative or
Yokogawa o󰀩ce.
• If the equipment is used as Um = 60 V DC, it
must be installed in a SELV (safety extra-low
voltage) or PELV (protective extra-low voltage)
system, or it must be directly connected to
apparatus complying with EN 61010-1 or a
technically equivalent standard.
• The equipment shall be installed as overvoltage
category I.
Intrinsically Safe (Certication Code: KS2,
Communication and I/O Code: JA or JB)
• When the equipment is mounted in an area
where the use of Category 1 G equipment is
required, it shall be installed in such a way that,
even in the event of rare incidents, an ignition
source due to impact and/or friction sparks is
excluded.
• The dielectric strength of 500 V r.m.s. between
the intrinsically safe circuit and the enclosure of
the equipment is limited, only by the removable
surge absorber.
Remote sensor
• When the equipment is mounted in an area
where the use of Category 1 G equipment is
required, it shall be installed in such a way that,
even in the event of rare incidents, an ignition
source due to impact and/or friction sparks is
excluded.
• From the safety point of view, the intrinsically
safe circuit of the remote sensor shall be
assumed to be connected to earth.
Remote transmitter
Flameproof (Certication Code: KF2)
• Flameproof joints are not intended to be
repaired. Contact Yokogawa representative or
Yokogawa o󰀩ce.
• If the equipment is used as Um = 60 V DC, it
must be installed in a SELV (safety extra-low
voltage) or PELV (protective extra-low voltage)
system, or it must be directly connected to
apparatus complying with EN 61010-1 or a
technically equivalent standard.
• The equipment shall be installed as overvoltage
category I.
Intrinsically Safe (Certication Code: KS2,
Communication and I/O Code: JA or JB)
• When the equipment is mounted in an area
where the use of Category 1 G equipment is
required, it shall be installed in such a way that,
even in the event of rare incidents, an ignition
source due to impact and/or friction sparks is
excluded.
• The dielectric strength of 500 V r.m.s. between
the intrinsically safe circuit of the remote
transmitter without the option code /BWC and
the enclosure of the equipment is limited, only
by the removable surge absorber.

IM 01F07A03-03EN
14
Revision Information
Title : User’s manual
Flowmeter VY Series ATEX Explosion Protection Type
Manual No. : IM 01F07A03-03EN
Edition Date Page Revised Item
1st Feb.2022 —New Publication