SICK FLOWSIC600-XT User manual

O P E R A T I N G I N S T R U C T I O N S
Installation
Operation
Maintenance
Title Page
FLOWSIC600-XT
Ultrasonic Gas Flow Meter

2 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Document Information
Described Product
Product name: FLOWSIC600-XT
Document ID
Title: Operating Instructions FLOWSIC600-XT
Part No.: 8018846/1BHP
Document ID: 9233168
Version: 2-1
Release: 2021-05
Manufacturer
SICK Engineering GmbH
Bergener Ring 27 · D-01458 Ottendorf-Okrilla · Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Original Documents
The English version 8018846/1BHP of this document is an original
document from SICK Engineering GmbH.
SICK Engineering GmbH assumes no liability for the correctness of
an unauthorized translation.
Please contact SICK Engineering GmbH or your local representa-
tive in case of doubt.
Legal Information
Subject to change without notice.
© SICK Engineering GmbH. All rights reserved.
Glossary
ATEX ATEX: Atmosphères Explosifs: Abbreviation for Euro-
pean standards that govern safety in potentially
explosive atmospheres
CSA Canadian Standards Association (www.csa.ca)
DC Direct Current
EVC Electronic Volume Corrector (
HF High frequency, e.g. HF pulse
IEC International Electrotechnical Commission
IECEx IEC system for certification in accordance with stan-
dards for devices for use in potentially explosive
atmospheres
IPxy Ingress Protection: Degree of protection of a device
in accordance with IEC/DIN EN 60529; x specifies
the protection against contact and impurities, y pro-
tection against moisture.
NAMUR Abbreviation for “Normen-Arbeitsgemeinschaft für
Mess- und Regeltechnik in der chemischen Indus-
trie”, now “Interessengemeinschaft Automatis-
ierungstechnik der Prozessindustrie”
(www.namur.de)
pTZ Volume conversions as function of the pressure,
temperature and under consideration of the real
gas factor
RTC Real time clock

FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 3
Warning Symbols
Warning Levels / Signal Words
DANGER
Risk or hazardous situation which will result in severe personal
injury or death.
WARNING
Risk or hazardous situation which could result in severe personal
injury or death.
CAUTION
Hazard or unsafe practice which could result in less severe or
minor injuries.
NOTICE
Hazard which could result in property damage.
Information symbols
IMMEDIATE HAZARD
of severe injuries or death
Hazard (general)
Hazard by voltage
Hazard in potentially explosive atmospheres
Hazard by explosive substances/mixtures
Hazard by unhealthy substances
Hazard by toxic substances
Information on product condition with regard to protec-
tion against explosions (general)
Information on product characteristics related to Euro-
pean Directive ATEX
Information on product characteristics related to explo-
sion protection in accordance with the IECEx scheme.
Important technical information for this product
Important information on electric or electronic func-
tions
Nice to know
Supplementary information
Link referring to information at another place

Co n t en ts
4 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
1 Important information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 Important safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2.1 Hazards due to hot, corrosive and explosive gases, or high pressure . . . . . . . . . . 10
1.2.2 Hazard through heavy loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2.3 Hazard through electromagnetic interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3.1 Product identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3.2 Purpose of the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3.3 Operation in potentially explosive atmospheres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.3.4 Operation in pressure applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.3.5 Restrictions of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.4 Responsibility of user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.4.1 Designated users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.4.2 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4.3 Danger identification on device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4.4 Special local conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4.5 Retention of documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2 System components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.1 Meter body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.2 Ultrasonic transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.3 Signal Processing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.4 Integrated pressure and temperature sensor - geometry correction via pressure
and temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.4.1 Correction in FLOWSIC600-XT electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.4.2 Correction outside the FLOWSIC600-XT electronics (volume converter) . . . . . 18
2.3 Features and applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.1 FLOWSIC600-XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.2 FLOWSIC600-XT 2plex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.3 FLOWSIC600-XT Quatro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3.4 FLOWSIC600-XT Forte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.3.5 FLOWSIC600-XT C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.6 FLOWSIC600-XT Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.4 Operating software FLOWgateTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4.2 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.4.3 Access rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.5 Operating modes, meter states and signal output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.5.1 Measuring mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.5.2 Air test mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.5.3 Configuration mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Contents

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FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 5
2.6 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.6.1 Analog outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.6.2 Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.6.3 Encoder totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.6.4 Serial data interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.6.5 Optical data interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.7 Totalizers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.8 Diagnostics function i-diagnosticsTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.8.1 Fingerprint System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.9 Data processing in FLOWSIC600-XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.9.1 Logbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.9.2 Archives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.9.3 Protection of parameters from undesired changes . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.10 Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.11 PowerIn TechnologyTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.1 Hazards during installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3.2 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2.1 Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2.3 Water pressure test in the plant (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.3 Mechanical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.1 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.2 Choosing flanges, seals and other components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.3 Requirements to the measuring point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.4 Fitting in the pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.3.4.1 Installation configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.3.4.2 Fitting the FLOWSIC600-XT in the pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.3.5 Signal Processing Unit alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.4 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.4.1 Requirements for use in potentially explosive atmospheres . . . . . . . . . . . . . . . . . . . 57
3.4.2 General connection of the FLOWSIC600-XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.4.3 Criteria for electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.4.4 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.4.5 Available input/output configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
3.4.6 Cable specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.4.7 Checking the cable loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
3.4.8 Connection parameters of inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.4.8.1 Safety-relevant parameters Ex-i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.4.8.2 Connection parameters Ex-d and Ex-e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
3.4.8.3 Ex-d terminal compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.4.8.4 Ex-e terminal compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.4.8.5 Ex-i terminal compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
3.4.9 Connecting the optional backup battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
3.4.10 Connecting external pressure and temperature sensors to the electronics . . . . . 77

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6 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
4 Commissioning and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
4.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
4.2 Parameter display on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
4.2.1 Opening the display protective flap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
4.2.2 Display and operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4.2.3 Display in the symbol bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4.2.4 Configurable standard display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4.2.5 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
4.3 Commissioning with the FLOWgateTM operating software . . . . . . . . . . . . . . . . . . . . . . . 86
4.3.1 Connecting to the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
4.3.2 Field setup wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
4.3.2.1 Device identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
4.3.2.2 System/User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
4.3.2.3 I/O configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.3.2.4 P + T pressure and temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.3.2.5 Volume converters (optional, only for devices with the volume conversion
device option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.3.2.6 Archives/Logbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.3.2.7 Diagnostics/warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.3.2.8 Meter installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.3.2.9 Completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.4 Function check after commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.4.1 Recommended checks: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.4.2 Checking the signal acceptance rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
4.4.3 Zero phase check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
4.4.4 Checking the speed of sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
4.4.5 Path failure compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
4.5 Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
5.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
5.2 Routine checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
5.2.1 Checking the meter state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
5.2.1.1 Function check on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
5.2.1.2 Function check with FLOWgateTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
5.2.2 Comparing theoretical and measured sound velocity (SOS) . . . . . . . . . . . . . . . . . . . 98
5.2.3 Time synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
5.2.3.1 Time synchronization via Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
5.2.3.2 Time synchronization with the FLOWgate™ operating software . . . . . . . . . . . . 100
5.2.3.3 Service life/capacity of RTC battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
5.2.4 Maintenance report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
5.2.5 Optional data backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
5.2.5.1 Logbook check and data backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
5.2.5.2 Checking the data archives (data logs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
5.2.6 Creating and evaluating the Diagnostics Comparison report . . . . . . . . . . . . . . . . . 103

Co n t en ts
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 7
5.3 Exchanging the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5.3.1 Battery types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5.3.2 Information on handling lithium batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5.3.2.1 Information on storage and transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5.3.2.2 Disposal information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5.3.3 Replacing the backup battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
5.3.3.1 Swivel the display unit downwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
5.3.3.2 Remove the backup battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
5.3.3.3 Insert the new backup battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
5.3.3.4 Swivel the display unit upwards and lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
5.3.4 Replacing the RTC battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
5.4 Cleaning the FLOWSIC600-XT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
6 Shutting down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
6.1 Returning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
6.1.1 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
6.1.2 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
6.2 Disposal information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
6.2.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
6.2.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
7.1 Status messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
7.2 Starting a diagnostic session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
8.1 Conformities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
8.1.1 CE certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
8.1.2 Standards compatibility and type approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
8.1.3 WELMEC conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
8.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
8.3 Measuring ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
8.4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
9 Annex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
9.1 Connection diagrams for operation of the FLOWSIC600-XT in accordance with
ATEX/IECEx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
9.2 Connection diagrams for operation of the FLOWSIC600-XT in accordance with
CSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
9.3 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
9.3.1 Ex-d (flameproof enclosure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
9.3.2 Ex-e (increased type of protection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
9.3.3 Ex-i (intrinsically safe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156
9.4 Power input of the possible input and output configurations . . . . . . . . . . . . . . . . . . . .158
9.5 Type plates (examples) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
9.6 Model name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
9.7 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Co n t en ts
8 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH

Important information
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 9
Subject to change without notice
FLOWSIC600-XT
1Important information
About this document
Important safety information
Intended use
Responsibility of user

10 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Important information
Subject to change without notice
1.1 About this document
These Operating Instructions describe the FLOWSIC600-XT measuring system. They provide
general information on the measuring method employed, design and function of the entire
system and its components, as well as on installation, commissioning, maintenance and
troubleshooting.
These Operating Instructions cover standard applications which conform with the technical
data specified. Additional information and assistance for special applications are available
from your SICK representative. It is generally recommended to take advantage of qualified
consulting services provided by SICK experts for your specific application.
1.2 Important safety information
1.2.1 Hazards due to hot, corrosive and explosive gases, or high pressure
The FLOWSIC600-XT is fitted directly in the gas-carrying line.
The plant operator is responsible for safe operation and for complying with additional
national and company-specific regulations.
1.2.2 Hazard through heavy loads
The FLOWSIC600-XT measuring system must be attached securely to the carrying structure
when being transported and installed.
▸ Only use lifting gear and equipment (e.g. lifting straps) suitable for the weight to be
lifted. Maximum load information can be found on the type plate of the lifting gear.
WARNING: Hazards through the gas in the system
The following conditions can increase the risk:
● Toxic gas or gas dangerous to health
● Chemically aggressive gas
● Explosive gas
● High gas pressure
● High gas temperature
▸ In installations with an increased risk, the FLOWSIC600-XT may only be
fitted and removed when the line is vented or when the installation is at a
standstill.
▸ The same applies to repair and service work which involves opening the
measuring duct or the explosion-proof Signal Processing Unit.
Otherwise health or injury risks can possibly arise through
escaping gas (e.g. poisoning, burns).
WARNING: Hazards through leaks
Operation in leaky condition is not allowed and potentially dangerous.
▸ Regularly check leak tightness of equipment.
NOTICE:
The lifting lugs are designed for transporting the meter only.
Do not lift or transport the FLOWSIC600-XT with additional loads using these
lugs.

Important information
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 11
Subject to change without notice
1.2.3 Hazard through electromagnetic interference
1.3 Intended use
1.3.1 Product identification
See the main type plate on the Signal Processing Unit for information for the identification
of your FLOWSIC600-XT.
Model name
The model names on the type plates identify the various device versions:
Fig. 1 Model name (example)
▸ Detailed description of the model name, see → p. 161, §9.6.
1.3.2 Purpose of the device
The FLOWSIC600-XT measuring system is used for measuring the actual volumetric flow
rate of gases transported in pipelines. Apart from that, the FLOWSIC600-XT can also deter-
mine the actual corrected volume and the sound velocity. Separate meters are available to
determine the gas volume depending on the flow direction.
NOTICE:
Measuring system FLOWSIC600-XT is a Group 1, Class A device in accordance
with EN55011:2009. It is intended for operation in an industrial environment.
In other environments, especially in living areas, it could possibly be difficult to
ensure electromagnetic compatibility due to the occurring conducted as well as
radiated interferences. In this case, the plant operator may be required to take
appropriate measures.
Product name: FLOWSIC600-XT
Manufacturer:
SICK Engineering GmbH
Bergener Ring 27
D-01458 Ottendorf-Okrilla
Germany
F6A - 4P 3D 08 - EA 1A - T218
Product Name
Path Configuration
Installation Length
Nominal Size
Ex Classification
I/O Configuration / Data Interfaces
Ultrasonic Transducer

12 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Important information
Subject to change without notice
1.3.3 Operation in potentially explosive atmospheres
The FLOWSIC600-XT is suitable for use in potentially explosive atmospheres:
IECEx
Ex db ia op is [ia Ga] IIA /IIC T4 Gb
Ex db eb ia op is [ia Ga] IIA/IIC T4 Gb
Ex ia op is IIA/IIC T4 Ga
Ex nA ia op is IIC T4 Gc
ATEX
II 2 (1) G Ex db ia op is [ia Ga] IIA /IIC T4 Gb
II 2 (1) G Ex db eb ia op is [ia Ga] IIA/IIC T4 Gb
II 1G Ex ia op is IIA/IIC T4 Ga
II 3G Ex nA ia op is IIC T4 Gc
NEC/CEC (US/CA)
Explosion-proof/non-flammable:
CI I, Div. 1 Group D, T4 / Ex d ia [ia Ga] IIA T4 Gb / Cl I, Zone 1 AEx d ia op is [ia Ga] IIA T4
Gb
Cl I, Div. 2 Groups A, B, C, D, T4 /Ex ia nA IIC T4 Gc / Cl I Zone 2, AEx ia nA op is IIC T4 Gc
CI I, Div. 1 Groups B, C, D, T4 / Ex d ia [ia Ga] IIC T4 Gb / Cl I, Zone 1 AEx d ia op is [ia Ga]
IIC T4 Gb
CI I, Div. 2 Groups A, B, C, D, T4 / Ex ia nA IIC T4 Gc / Cl I, Zone 2, AEx ia nA op is IIC T4 Gc
Intrinsically safe:
CI I, Div. 1 Group D T4 / Ex ia IIA T4 Ga / Cl I, Zone 0, AEx ia op is IIA T4 Ga
CI I, Div. 1 Groups A, B, C, D, T4 / Ex ia IIC T4 Ga / Cl I, Zone 0, AEx ia op is IIC T4 Ga
Non-flammable:
Cl I, Div. 2, Groups A, B, C, D, T4 / Ex ia nA IIC T4 Gc / Cl I Zone 2, AEx ia nA op is IIC T4 Gc
1.3.4 Operation in pressure applications
Design, manufacture and inspection of the FLOWSIC600-XT are performed in accordance
with the safety requirements in the European Directive 2014/68/EC for pressure equip-
ment.
1.3.5 Restrictions of use
Check the FLOWSIC600-XT is suitably equipped for your application (e.g., gas conditions).
The measuring system must only be used as specified by the manufacturer and as set
forth below. Pay special attention that the equipment complies with the technical data,
information about the permitted use as well as assembly, installation, ambient and operat-
ing conditions.
Relevant information is provided in the order documentation, type plate, certification docu-
ments and these Operating Instructions.
NOTICE:
▸ The plant operator must ensure that the upper/lower limit values shown on
the type plate are not overflown or underflown in operation.

Important information
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 13
Subject to change without notice
1.4 Responsibility of user
▸
Only put the FLOWSIC600-XT into operation after reading the Operating Instructions.
▸ Observe all safety information.
▸ If anything is not clear: Please contact SICK Customer Service.
1.4.1 Designated users
These Operating Instructions are intended for skilled persons familiar with the following
tasks:
● Installation (setting up/assembly)
● Commissioning
● Handling and monitoring during operation
● Maintenance/service.
● Installation, commissioning, maintenance and inspection may only be carried out by
skilled persons having knowledge of the relevant rules and regulations for potentially
explosive atmospheres, especially:
– Ignition protection types
– Installation regulations
– Zone classification
NOTICE:
Skilled persons are persons in accordance with DIN VDE 0105 or IEC 364, or
directly comparable standards. It is decisive that these persons can recognize
and avoid possible hazards, especially hazards arising from gases dangerous to
health, and hot or pressurized gases.

14 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Important information
Subject to change without notice
1.4.2 Correct use
▸ Only use the FLOWSIC600-XT as described in these Operating Instructions. The manu-
facturer bears no responsibility for any other use.
▸ Do not carry out any work or repairs on the FLOWSIC600-XT not described in these
Operating Instructions.
▸ Do not remove, add or change any components in or on the FLOWSIC600-XT unless
such changes are officially allowed and specified by the manufacturer. Otherwise:
– Any warranty by the manufacturer becomes void
– The FLOWSIC600-XT can become dangerous
– The approval for use in potentially explosive atmospheres is no longer valid
– The approval fur use in lines pressurized above 0.5 bar (7.25 psi) bar is no longer
valid.
1.4.3 Danger identification on device
The following symbol draws attention to important hazards directly on the device:
▸ Consult the Operating Instructions in all cases where the symbol is attached to the
device or shown on the display.
1.4.4 Special local conditions
▸ Follow all local laws, regulations and company-internal operating directives applicable at
the installation location.
1.4.5 Retention of documents
▸ Keep these Operating Instructions available for reference.
▸ Pass these Operating Instructions on to a new owner.

Product description
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 15
Subject to change without notice
FLOWSIC600-XT
2Product description
Measuring principle
System components
Features and applications
Operating software FLOWgateTM
Operating modes, meter states and signal output
Interfaces
Totalizers
Diagnostics function i-diagnosticsTM
Data processing in FLOWSIC600-XT
Sealing
PowerIn TechnologyTM

16 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Product description
Subject to change without notice
2.1 Measuring principle
The FLOWSIC600-XT measuring system works according to the principle of ultrasonic tran-
sit time difference measurement. This allows conclusions to be made on the gas volume
flowing through based on the sound velocity transfer time. Measurement is carried out in a
direct path layout to keep disturbing effects such as gas flow turbulence, dirt, moisture or
interfering noises as low as possible. Two ultrasonic transducers are positioned opposite
each other in a defined angle to the gas flow and operate alternately as sender and
receiver.
2.2 System components
The FLOWSIC600-XT measuring system consists of the following hardware components:
Fig. 2 Overview FLOWSIC600-XT
Fig. 3 Overview FLOWSIC600-XT C
1
2
3
3
4
1 Signal Processing Unit
2 Meter body
3 Cover caps for ultrasonic transducers
4 Cover cap for integrated pressure and temperature sensor
Rear view
4
1 Signal Processing Unit
2 Meter body
3 Cover cap for ultrasonic transducers
3
1
2

Product description
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 17
Subject to change without notice
2.2.1 Meter body
The meter body consists of a mid section for mounting the ultrasonic transducers, with
flanges on either end. The meter body is made of a single-piece forging, which is machined
on precision equipment to ensure high reproducibility of the geometric parameters.
The internal diameter, design of the sealing surface, and standard dimensions of the
flanges are in accordance with the specifications in the data sheet and key code. The meter
body material is chosen to suit customer requirements. Standard meter bodies are
available in carbon steel, low temperature carbon steel and stainless steel.
The meter bodies can be delivered in several nominal sizes (→ p. 126, §8.4).
2.2.2 Ultrasonic transducers
Ultrasonic transducers optimally tuned to system requirements are fitted on the
FLOWSIC600-XT. The high quality of the transducer design provides the basis for accurate
and highly stable transit time measurement of the ultrasonic signals with nanosecond
precision.
In order to meet as many application requirements as possible, an ultrasonic transducer
suitable for this application is used depending on process parameters gas pressure and
temperature, noise and gas composition. The basis for this is a sensor portfolio approved
within the framework of the EU Type Examination Certificate.
In principle, the installed ultrasonic transducers are already functional at ambient
pressure, which brings numerous advantages. Some selected transducer types, especially
for applications above 105 bar absolute pressure, are optimized for high pressure use to
ensure the measuring function. A minimum pressure of ≥ 5 bar(a) is usually required for
these sensor types.
2.2.3 Signal Processing Unit
The Signal Processing Unit contains all the electrical and electronic components for con-
trolling the ultrasonic transducers. It generates transmission signals and analyzes the
received signals to calculate the measured values. The Signal Processing Unit also contains
several interfaces for communication with a PC or standardized process control system.
The meter counters, log books (errors, warnings, parameter changes) and data logs are
stored with a timestamp in a 30 second time grid, → p. 32, §2.9.1.
On system restart, the meter levels that were last saved are restored as the start values for
the volume counters.
The Signal Processing Unit has a three-line LCD display for the current measured data and
diagnostics data. Selection is possibly by operation with pushbuttons on the display. Config-
uration is not possible on the display, but only via the FLOWgateTM operating software.
The connection terminals for power supply and the I/O interfaces for communication with
the device are located in a separate terminal compartment of the Signal Processing Unit.
2.2.4 Integrated pressure and temperature sensor - geometry correction via pressure
and temperature
As an option, the FLOWSIC600-XT has an integrated pressure and temperature sensor. This
sensor measures the process parameters gas pressure and gas temperature at the same
time.
The values measured for pressure and temperature are used to correct the meter body
geometry and to determine the current Reynolds number.
The sensor is not subject to (re-)calibration intervals. Its measurement uncertainty is 1%
over the entire measuring range and is therefore sufficiently accurate for the geometry and
Reynolds number correction in electronics.
The integrated pressure and temperature sensor cannot be used for volume conversion.

18 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Product description
Subject to change without notice
2.2.4.1 Correction in FLOWSIC600-XT electronics
The geometric parameters of the Signal Processing Unit configured in the Signal Process-
ing Unit reference the atmospheric conditions (20 °C, 1 bar ambient pressure). When a
higher-level process control system or Flow Computer writes the current process parame-
ters gas pressure and gas temperature to the FLOWSIC600-XT, the FLOWSIC600-XT cor-
rects the geometric parameters of the meter body based on the differences to the refer-
ence conditions specified above.
If no current process values for pressure and temperature are available to the
FLOWSIC600-XT due to a failure of external sources (volume converter or pressure and
temperature transmitter), the device makes the correction based on the last known
pressure and temperature values.
The optional integrated pressure and temperature sensor can take over the function of pro-
viding live data when no current process values are written to the device.
The device makes the correction based on the fixed values pfix and Tfix when no current
process values for pressure and temperature are available for the FLOWSIC600-XT from the
integrated pressure and temperature sensor (volume converter or pressure and tempera-
ture transmitter).
The fixed values pfix and Tfix are typically configured corresponding to the test conditions
during high pressure calibration. The fixed values for pressure (pfix) and temperature (Tfix)
in the device should always be configured corresponding to the average process conditions
in the application when these deviate considerably from the tested conditions. Within the
framework of individual national approvals, an access restriction may prohibit modification
of the substitute values when the parameter locking switch is closed.
2.2.4.2 Correction outside the FLOWSIC600-XT electronics (volume converter)
Process pressure and temperature influence, among other things, the diameter of the flow
meters and ultimately affect the measurement uncertainty. This influence must be taken
into account and compensated, e.g. in accordance with the international standard
ISO 17089-1:2019 paragraph 9.1.
The FLOWSIC600-XT compensates pressure and temperature effects on the measuring
meter body geometry to obtain the exact actual flow volume (qv,corr,a.c.). SICK recommends
leaving meter body correction in the flow meter. The following equations are used for the
geometry correction in the flow meters.
αT ... correction coefficient temperature, meter housing geometry
αp ... correction coefficient pressure, meter housing geometry
∆T ... difference between operating temperature and reference condition (20 °C) using the
internal correction of the meter.
∆p ... difference between operating pressure and reference condition (1 bar(a)) using the
internal correction of the meter.

Product description
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 19
Subject to change without notice
If a geometry correction is to be made in the volume converter, it is important to make the
correct settings and to follow the procedure below.
1Before calibrating the meter:
▸ Set αT and αp in the meter registers to “0”.
– Register No. 7422 … CC_DiameterPress  Set value to “0”
– Register No. 7424 … CC_DiameterTemp  Set value to “0”
▸ Set the fixed pressure vale in the meter equal to the nominal calibration pressure
(pfix = pcal).
▸ Set the temperature fixed value in the meter to the nominal calibration temperature
(Tfix = Tcal).
2Calibrate the meter.
▸ Perform the adjustment using the preferred correction method.
▸ Check the adjustment accordingly.
3During meter commissioning:
▸ Set the pressure fixed value in the meter equal to the average absolute operating
pressure (pfix = pop).
▸ Set the fixed temperature value in the meter equal to the average operating
temperature (Tfix = Top) for Reynolds number correction in the flow meter.
4The actual temperature and pressure difference in the calibrated state must be
calculated for the geometry correction in the volume converter according to the
equations:
– ΔT = Top – Tcal (Top in °C)
– Δp = pop – pcal (pop in bar(a))
Within the framework of individual national approvals, an access restriction
may prohibit modification of the substitute values when the parameter locking
switch is closed.

20 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Product description
Subject to change without notice
2.3 Features and applications
2.3.1 FLOWSIC600-XT
The FLOWSIC600-XT is the all-round device for all natural gas applications subject to
custody transfer.
The FLOWSIC600-XT is equipped with four ultrasonic measuring paths and measuring
electronics (transducer/Signal Processing Unit). Meters with 4 paths can be used for fis-
cal gas metering in any segment of the natural gas market, including extraction, transporta-
tion, distribution and storage. National Type Examination Certificates exist for several
countries.
Fig. 4 FLOWSIC600-XT
2.3.2 FLOWSIC600-XT 2plex
The FLOWSIC600-XT 2plex is a very compact combination of a gas flow meter for custody
transfer with a control measuring device, and provides advanced diagnostics functionality
with an additional independent measuring path.
With their different path arrangements and the resulting difference in sensitivity, the
diagnostics systems of the FLOWSIC600-XT 2plex can be compared in order to identify
disturbances (caused by contamination, pulsation or noise) at an early stage and provide
a warning.
Fig. 5 FLOWSIC600-XT 2plex