SICK FLOWSIC600 User manual

MMM
I
MMMOPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS
FLOWSIC600 DRU/DRU-S
Gas Flow Meters
Gas flow meters for applications in natural gas production
Title Page

28026711/V1-0/2021-06 | SICKOPERATING INSTRUCTIONS | FLOWSIC600DRU/DRU-S
Subject to change without notice
Described product
Product name: FLOWSIC600 DRU/DRU-S
Manufacturer
SICK Engineering GmbH
Bergener Ring 27 · D-01458 Ottendorf-Okrilla · Germany
Phone: +49 35205 52410
Fax: +49 35205 52450
E-mail: [email protected]
Legal information
This work is protected by copyright. Any rights derived from the copyright shall be
reserved for SICK Engineering GmbH. Reproduction of this document or parts of this
document is only permissible within the limits of the legal determination of Copyright
Law.
Any modification, shortening or translation of this document is prohibited without the
express written permission of SICK Engineering GmbH.
The trademarks stated in this document are the property of their respective owner.
© SICK Engineering GmbH. All rights reserved.
Original document
This document is an original document of SICK Engineering GmbH.

CONTENTS
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1 About this document................................................................................. 6
1.1 Function of this document..............................................................................6
1.2 Scope of application .......................................................................................6
1.3 Target groups ..................................................................................................6
1.4 Data integrity...................................................................................................6
1.5 Further information ........................................................................................ 7
1.6 Abbreviations used ........................................................................................7
1.7 Abbreviations for measured variables ..........................................................7
1.8 Symbols and document conventions .............................................................8
1.8.1 Warning symbols.............................................................................8
1.8.2 Warning levels and signal words....................................................8
1.8.3 Information symbols .......................................................................8
2 For your safety............................................................................................ 9
2.1 Basic safety information ................................................................................9
2.1.1 General safety instructions and protective measures ................10
2.1.2 Environmental protection information and disposal
instructions ...................................................................................10
2.2 Intended use .................................................................................................10
2.3 Authorized personnel....................................................................................11
3 Product description .................................................................................12
3.1 FLOWSIC600 DRU overview .........................................................................12
3.1.1 Technical features of the FLOWSIC600 DRU ..............................13
3.1.2 FLOWSIC600 DRU application range...........................................13
3.2 FLOWSIC600 DRU-S overview ......................................................................14
3.2.1 Technical features of the FLOWSIC600 DRU-S ...........................14
3.3 FLOWSIC600 DRU/DRU-S system components ..........................................15
3.3.1 Meter body ....................................................................................15
3.3.2 Ultrasonic sensors ........................................................................15
3.3.3 Signal processing unit (SPU) .......................................................15
3.4 Operating modes, meter states and signal output......................................16
3.4.1 Operation mode and Configuration mode ...................................16
3.4.2 Meter status..................................................................................16
3.4.3 Impulse output and status signaling ..........................................18
3.5 Self-diagnosis with user warnings ................................................................20
3.6 Wet gas detection .........................................................................................21
3.6.1 Activating or deactivating wet gas detection...............................21
3.6.2 Signalization of wet gas detection ...............................................22
3.7 Data processing in FLOWSIC600 DRU/DRU-S.............................................23
3.7.1 Integrated volume counters .........................................................23
3.7.2 Logbooks .......................................................................................24
3.7.3 DataLogs / Archives .....................................................................26
3.7.4 Diagnostics Comparison Log ....................................................27
Contents
Contents

CONTENTS
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3.8 FLOWgateTM ................................................................................................. 28
3.8.1 Overview ....................................................................................... 28
3.8.2 System requirements ................................................................... 28
3.8.3 Installation.................................................................................... 29
3.8.4 Access rights ................................................................................ 29
4 Installation................................................................................................ 30
4.1 General information ..................................................................................... 30
4.1.1 Delivery ......................................................................................... 30
4.1.2 Transport and storage.................................................................. 31
4.2 Installation .................................................................................................... 32
4.2.1 Measuring port ............................................................................. 32
4.2.2 Installation configurations ........................................................... 33
4.3 Mechanical installation ................................................................................ 35
4.3.1 Choosing flanges, gaskets and other components .................... 35
4.3.2 Fitting the FLOWSIC600 DRU/DRU-S in the pipeline ................. 35
4.3.3 SPU alignment .............................................................................. 36
4.4 Electrical installation ................................................................................... 37
4.4.1 General information ..................................................................... 37
4.4.2 Cable specifications .................................................................... 38
4.4.3 Checking the cable loops ............................................................ 39
4.4.4 Terminal compartment on the SPU ............................................. 40
4.4.5 Operation in Non-Ex areas: .......................................................... 42
4.4.6 Operation in Ex zones .................................................................. 43
5 Commissioning ........................................................................................ 50
5.1 General information .................................................................................... 50
5.2 Connecting to the device.............................................................................. 51
5.2.1 Connecting the FLOWSIC600 DRU/DRU-S via an
RS485/USB converter ................................................................. 51
5.2.2 Connecting devices with FLOWgateTM for commissioning ......... 51
5.3 Identification ................................................................................................. 53
5.4 Field Setup wizard ....................................................................................... 54
5.4.1 System + LCD ............................................................................... 54
5.4.2 Operating parameters .................................................................. 54
5.4.3 I/O setup....................................................................................... 54
5.4.4 I/O configuration .......................................................................... 55
5.4.5 Archive/Logbooks......................................................................... 55
5.4.6 Finish ............................................................................................ 55
5.5 Functional test on the device....................................................................... 56
5.5.1 Function test FLOWSIC600 DRU/DRU-S with LCD front panel .. 56
5.6 Function check with FLOWgateTM................................................................ 57
5.7 Activating path compensation ..................................................................... 61
5.8 Documentation ............................................................................................. 61

CONTENTS
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6 Maintenance.............................................................................................62
6.1 General information .....................................................................................62
6.2 Routine checks with FLOWgateTM .................................................................................63
6.2.1 Function check (device status) ...................................................63
6.2.2 Time synchronization....................................................................64
6.2.3 Status report .................................................................................64
6.2.4 Optional data backup ...................................................................65
7 Troubleshooting .......................................................................................66
7.1 General troubleshooting ...............................................................................66
7.2 Displaying meter status, system alarms and warnings..............................66
7.3 Creating a diagnostic session with FLOWgateTM ....................................................67
7.4 Troubleshooting when connecting meters...................................................68
8 Annex.........................................................................................................69
8.1 Conformities and technical data ..................................................................69
8.1.1 Standards conformity and type approvals...................................69
8.1.2 WELMEC conformity .....................................................................69
8.2 Type code .....................................................................................................70
8.3 Technical data FLOWSIC600 DRU................................................................71
8.4 Technical data FLOWSIC600 DRU-S ............................................................73
8.5 Dimensional drawings...................................................................................74
8.5.1 Dimensional drawing FLOWSIC600 DRU 3 and 4 inch...............74
8.5.2 Dimensional drawing FLOWSIC600 DRU 6 inch..........................75
8.5.3 Dimensional drawing FLOWSIC600 DRU-S..................................75
8.6 Operation and menu structure of the meter body with LCD display...........76
8.6.1 Operation ......................................................................................76
8.6.2 Displaying measured values ........................................................84
8.6.3 Data editing in Configuration mode .............................................85
8.6.4 Resetting the error volume counters ...........................................86
8.6.5 Acknowledging a battery replacement.........................................86
8.7 Logbooks .......................................................................................................87
8.7.1 Overview of event entries in Meter logbooks .............................88
8.8 SPU terminal assignment .............................................................................92
8.9 Connection diagram for operation of the FLOWSIC600 DRU/DRU-S
in Ex-zones acc. to North American Directives (NEC, CEC) .........................93
8.10 Wiring example..............................................................................................99
8.10.1 Intrinsically safe installation ........................................................99
8.10.2 Non-intrinsically safe installation.............................................. 100

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1ABOUT THIS DOCUMENT
1 About this document
1.1 Function of this document
These Operating Instructions describe the FLOWSIC600 DRU/DRU-S measuring system to
measure the volumetric flow a.c., volume a.c. and the sound velocity of gases in pipelines.
They contain basic information on the measuring method used, the layout and function of
the overall system and its components, as well as planning, assembly, installation,
commissioning, maintenance, troubleshooting and fault clearance. The comparison of
characteristic properties of the available system variants is intended to facilitate the
decision in the planning phase for a configuration optimally adapted to the measurement
task.
These Operating Instructions cover standard applications conforming with the technical
data specified. Additional information and assistance for special applications are available
from your SICK representative. Consultation with SICK specialists for your specific
application is recommended in all cases.
1.2 Scope of application
These Operating Instructions apply exclusively to the following firmware and software
versions:
It does not apply to other measuring devices from SICK.
The standards specified in the Operating Instructions must be observed in their currently
valid version.
1.3 Target groups
This Manual is intended for persons who install, operate and maintain the device.
Operation
The device may only be operated by authorized persons who, based on their training on,
and knowledge of the specific device, as well as knowledge of the relevant regulations can
assess the tasks given and recognize the hazards involved.
Installation and maintenance
Skilled persons are required for installation and maintenance.
Observe the information at the beginning of the respective Sections.
1.4 Data integrity
SICK Engineering GmbH uses standardized data interfaces, such as standard IP
technology, in its products. The focus here is on product availability and features. SICK
Engineering GmbH always assumes the customer ensures the integrity and confidentiality
of data and rights affected in connection with the use of the products. In all cases, the
customer is responsible for the implementation of safety measures suitable for the
respective situation, e.g., network separation, firewalls, virus protection and patch
management.
Device / software Firmware or software version
FLOWSIC600 DRU/DRU-S 3.6.84 or higher
FLOWgateTM 1.17.00 or higher

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ABOUT THIS DOCUMENT 1
1.5 Further information
1.6 Abbreviations used
1.7 Abbreviations for measured variables
Document Part No.
FLOWSIC600 DRU Short Manual MODBUS E134768
FLOWSIC600 Technical Bulletin ENCODER Output E_40492
FLOWSIC600 DRU Service Manual 8023840
Abbreviation Significance
s.c. In standard condition
a.c. In operating condition
SOS Speed of sound, sound velocity
VOG Velocity of gas, gas velocity
SPU Signal processing unit
DRU Differential replacement Unit
DRU-S Differential replacement Unit - short
FRAM Ferroelectric random access memory, non - volatile memory
LVF Liquid volume fraction
FLASH PROM Flash programmable read - only memory
Measured variables Abbreviations and units for
FLOWSIC600 DRU/DRU-S
Abbreviations used on the LCD
signal processing unit
Volume in operating
conditions Vf m³ acf Vf m³ cf
Volume in standard
conditions Vb Nm³ scf Vb m³ cf
Error volume in operating
conditions Ef m³ acf Ef m³ cf
Error volume in standard
conditions Eb Nm³ scf Eb m³ cf
Total volume, original Vo m³ acf Vo m³ cf
Operating volume flow Qf m³/h acf/h Qf m³/h cf/h
Volume flow rate in
standard state Qb Nm³/h scf/h Qb m³/h cf/h
Mass counters M t lbs M t lbs
Error mass Me t lbs M t lbs
Mass flow rate s.c. Mf t/h lbs/h M t/h lbs/h
Table 1: Abbreviations for measured variables

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1ABOUT THIS DOCUMENT
1.8 Symbols and document conventions
1.8.1 Warning symbols
1.8.2 Warning levels and 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.
NOTICE:
Hints.
1.8.3 Information symbols
Symbol Significance
Hazard (general)
Hazard by electrical voltage
Hazard in potentially explosive atmospheres
Symbol Significance
Information on product design with regard to protection against explosions (general)
Important technical information for this product
Important information on electrical or electronic functions

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FOR YOUR SAFETY 2
2Foryoursafety
2.1 Basic safety information
WARNING: Hazards through hot, aggressive or explosive gases or high pressure
The FLOWSIC600 DRU/DRU-S is fitted directly in the gas-carrying line.
▸In systems with gases harmful to health, explosion hazard, high pressure, high
temperatures, the FLOWSIC600 DRU/DRU-S may only be installed and removed
when the line is vented or the system is at a standstill.
▸The same requirement applies to carrying out repair and maintenance work that
requires opening the measuring channel and/or the explosion-proof signal
processing unit.
▸The responsibility for safe operation lies with the operator; in particular, additional
applicable national and company regulations must be observed.
WARNING: Danger due to heavy loads
▸The device must be securely fastened to the support structure during transport and
assembly.
▸Only use hoisting equipment 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
hoisting equipment.
▸The eyebolts attached to the meter body are suitable for transporting the measuring
device. However, additional loads (e.g. dummy covers for closing the device, filling for
pressure tests or associated pipelines) must not be lifted and transported together
with the measuring system without additional support using the hoisting equipment.
▸No hoisting equipment may be attached to or interfere with the signal processing
unit or its mounting.
WARNING: Hazards when flushing the line
If it is necessary to flush the FLOWSIC600 DRU/DRU-S, contact the responsible SICK
subsidiary beforehand and also follow the instructions below exactly:
▸The pressure during flushing must not be higher than 1.2 times the nominal
pressure (with built-in sensors).

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2FOR YOUR SAFETY
2.1.1 General safety instructions and protective measures
Improper use or improper handling can cause damage to health or material damage.
Therefore, please read this Section thoroughly and observe this information for all tasks on
the FLOWSIC600 DRU/DRU-S as well as the caution and warning information in the
individual Sections of these Operating Instructions.
The following is basically applicable:
●When preparing and carrying out tasks, the legal regulations applicable to the respective
plant as well as the technical rules and guidelines implementing these regulations must
be observed. Special care must be taken on plants with increased hazard potential
(pressure lines, explosion protection zones). Particular attention should be paid to the
rules applicable for such plants.
●All work must be carried out in accordance with local, plant-specific conditions and
operational hazards and regulations.
●Operating Instructions and system documentation belonging to the measuring system
must be available on site. The instructions contained therein for the avoidance of
hazards and damage must be observed at all times.
●In accordance with the respective hazard potential, suitable protective devices and
personal safety equipment must be available in sufficient quantity and used by the
personnel.
2.1.2 Environmental protection information and disposal instructions
The FLOWSIC600 DRU/DRU-S components are easy to disassemble and contain no toxic,
radioactive or other environmentally harmful substances. The device is mainly made of
steel, stainless steel, plastic and aluminium, and there are therefore few restrictions on
disposal. Only the circuit boards have to be disposed of as electronic waste.
2.2 Intended use
The FLOWSIC600 DRU/DRU-S serves to measure the volumetric flow rate of gases in
pipelines. The FLOWSIC600 DRU/DRU-S can also be used to determine the sound velocity.
The measuring system may only be used in the manner specified by the manufacturer and
described below. It should be noted in particular that:
●The application complies with the technical data, the information on the permissible use
as well as the assembly, connection, ambient and operating conditions. Relevant
information is provided in the order documentation, type plate, certification documents
and this manual.
●Observe all measures necessary for conservation of value, e.g., for maintenance and
inspection and/or transport and storage.
●The device is not subjected to any unallowed mechanical stress, e.g. through pig
cleaning.
●Flushing the FLOWSIC600 DRU/DRU-S with liquid (e.g. for pressure or leak tests)
constitutes improper use. The consequences of such actions are neither foreseeable nor
can they be assessed. The result of improper use can be the failure of the ultrasonic
sensors and consequently the failure of the entire gas flow meter.

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FOR YOUR SAFETY 2
2.3 Authorized personnel
It is essential that those responsible for safety ensure the following:
●Any work on the measuring system may only be carried out by qualified persons and be
approved by skilled persons responsible for the plant. Qualified persons are those who,
based on their training, experience or instruction as well as their knowledge of relevant
standards, regulations, accident prevention rules and plant conditions have been
authorized by those responsible for persons and plants to carry out such work. It is
decisive that these persons can recognize and avoid any possible hazards in good time.
●Skilled persons must have precise knowledge of process-specific dangers, e.g. due to
the effects of hot, toxic and pressurized gases, gas-liquid mixtures and other process
media, as well as the design and working principle of the measuring system and
adequate knowledge of the measuring system gained through documented training.
●In hazardous areas with potentially explosive atmospheres, wiring / installation shall only
be carried out by trained staff and under consideration of national regulations.

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3PRODUCT DESCRIPTION
3 Product description
3.1 FLOWSIC600 DRU overview
FLOWSIC600 DRU is an innovative ultrasonic 2-path gas flow meter for use in natural gas
production. The meter has a full-bore design and includes a 10D inlet piping for piping
diameters ≤4“. For larger diameters, an additional 10D inlet piping specially manufactured
for the FLOWSIC600 DRU is included in the scope of delivery.
With a measuring range span of > 50:1[1] , the FLOWSIC600 DRU covers a wide flow range
which normally requires several orifice plates. Due to its special design, the FLOWSIC600
DRU provides low measurement uncertainty without need for a high-pressure flow
calibration.
High-quality components with the highest manufacturing precision and wet gas tolerant
sensors ensure long-term reliable measurement, even under difficult conditions. The
FLOWSIC600 DRU has advanced diagnostic functions for real-time monitoring of the
measuring device and process. The ultrasonic measurement principle with direct path
layout makes the FLOWSIC600 DRU virtually maintenance-free – even with high liquid
loads.
[1] 100:1 can be achieved with high pressure calibration
Fig. 1: FLOWSIC600 DRU components
1
1 Flange 4 Pressure tap
2 Meter body 5 Sensor cover
3SPU
2
3
4
5
12
3
4
5
FLOWSIC600 DRU 3" and 4"
FLOWSIC600 DRU 6"

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PRODUCT DESCRIPTION 3
3.1.1 Technical features of the FLOWSIC600 DRU
●Special 10D inlet piping (integrated or separate)
●“Full-bore” design
●Diagnostic feature, wet gas detection
●Wet gas tolerant meter design
●Wet gas tolerant sensors
3.1.2 FLOWSIC600 DRU application range
Maximum volume flow rate Qmax is limited for gas pressures above 31 bar (450 psi(g)).
The application range of the FLOWSIC600 DRU for different diameters is shown in the
following diagram.
Fig. 2: Application range DRU

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3PRODUCT DESCRIPTION
3.2 FLOWSIC600 DRU-S overview
FLOWSIC600 DRU-S is an innovative ultrasonic 2-path gas flow meter for use in natural gas
production.
With its large measuring range, FLOWSIC600 DRU-S covers a wide flow range that usually
requires several orifice plates. Due to its special design, the FLOWSIC600 DRU-S provides
reliable measurement performance, with high accuracy without need for a high-pressure
flow calibration.
High quality components with superior manufacturing precision and wet gas robust
sensors ensure long-term measurement reliability even in challenging conditions.
FLOWSIC600 DRU-S provides advanced diagnostic capabilities for real-time monitoring of
the measuring device and process. The ultrasonic measurement principle with direct path
layout makes the FLOWSIC600 DRU-S virtually maintenance-free – even with high liquid
loads.
Fig. 3: FLOWSIC600 DRU-S
3.2.1 Technical features of the FLOWSIC600 DRU-S
●Wet gas robust meter design
●Wet gas robust sensors
●“Full-bore” design
●Diagnostic feature wet gas detection (option)
12
3
54
1 Flange
2 Meter body
3SPU
4 Pressure tap
5Sensorcover

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PRODUCT DESCRIPTION 3
3.3 FLOWSIC600 DRU/DRU-S system components
3.3.1 Meter body
The meter body consists of a section for mounting the ultrasonic sensors and flanges for
fitting in the respective pipeline. The meter body is made from a casting blank or forging
piece machined on precision machining equipment to ensure high reproducibility of the
geometric parameters.
The inner diameter, sealing surface shape and dimensional standard of the connecting
flanges are manufactured according to the specifications in the type code. The meter body
material is chosen to suit customer requirements. Steel meter bodies are available as
standard.
3.3.2 Ultrasonic sensors
Ultrasonic sensors optimally tuned to system requirements are fitted on the FLOWSIC600
DRU/DRU-S. The high quality of the sensor design provides the basis for accurate and
highly stable transit time measurements with nanosecond precision. The ultrasonic
sensors are electrically intrinsically safe (“Ex ia”, with equipment protection level Ga).
3.3.3 Signal processing unit (SPU)
The SPU contains all the electrical and electronic components for controlling the ultrasonic
sensors. It generates the transmission signals and analyzes the received signals to
calculate the measured value. The SPU also contains several interfaces for communication
with a PC or standardized process control system.
Current meter levels, logbooks (errors, warnings, parameter changes) and Data Logs are
written to non-volatile memory (FRAM) with a timestamp. On system restart, the meter level
last saved is restored as the start values for the volume counter. The FRAM backup
provides an unlimited number of writing cycles and guarantees saved data protection for a
minimum of 10 years.
The SPU is equipped with a front panel containing a two-line LCD display to display current
measured values, diagnostics and logbook data. Selection using a magnetic pen is possible
with the window cover closed.
The power supply and interface terminals are located on the back of the SPU in a separate
terminal compartment →page 40, 4.4.4.
The electronics are housed in an enclosure certified to CSA Std. C22.2 No. 30-M1986 or
UL Std. No. 1203 with the “Explosion-Proof Enclosure” type of ignition protection. The
ultrasonic sensors are electrically intrinsically safe and non-sparking.
NOTICE:
For an operation and menu structure of the meter body with LCD display see: →page
76, 8.6

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3PRODUCT DESCRIPTION
3.4 Operating modes, meter states and signal output
The FLOWSIC600 DRU/DRU-S has the following two operating modes:
●Operation mode
●Configuration mode
In Operation mode, the meter can have the following meter status:
●Measurement valid
●Maintenance request
●Measurement invalid
3.4.1 Operation mode and Configuration mode
The meter can be used in two modes: Operation or Configuration mode.
Operation mode
In Operation mode, the meter runs in one of three meter statuses previously mentioned
depending on the measurement conditions.
Configuration mode
Configuration mode serves to modify parameters that directly influence measurement and
to test the system and output signals. Configuration mode forcibly sets the meter to the
“Measurement invalid” status and the “Measurement valid” digital output is disabled.
Invalid measured values may occur. The system continues operation using the current
sample rate and executes all calculations as in Operation mode. Frequency output and
analog output may be set to test values and do thus not necessarily indicate measured
values. All parameter changes are immediately taken into account in the current
calculations with the following exception: Changes to the measuring rate or the
configuration of the serial interface are applied after the meter switches to Operation
mode.
3.4.2 Meter status
Status: Measurement valid
Status “Measurement valid” is the normal meter status of the FLOWSIC600 DRU/DRU-S.
Frequency output and current output are updated cyclically and deliver the volumes and
actual volume flow rate. Apart from that, the analog signal can display the actual volume
flow rate, the corrected volume flow rate, the sound velocity (SOS) or the gas velocity (VOG).
The digital output “Direction of flow” is updated in accordance with the direction of the
volume flow. The digital output “Measurement valid” (active) represents the status of the
measurement. Positive (forward) and negative (reverse) volume flow rates are integrated
and saved in separate internal memory sections.
The Modbus interface serves to inquire all parameters and signal shapes at any time
without influencing system functions.
Each measurement initiated by the system controller includes one full transit time
measurement with, and one against the direction of flow, on each path. The result of each
measurement is written to a mean value memory to be used in further calculations. The
size of this memory block and thus the device response delay can be modified through the
parameter in register #3502 “AvgBlockSize”. If no result can be calculated due to poor
The meter switches automatically to Operation mode when the meter is in Configuration
mode and no activities occur for longer than 15 minutes on the LCD display or via
FLOWgateTM.

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PRODUCT DESCRIPTION 3
signal quality, this measurement is registered as an invalid attempt in the mean value
memory. The mean value is formed in a variable averaging process including all valid
measured values in the memory.
The measuring system switches to status “Maintenance request” when the number of
invalid measurements in one path exceeds the prescribed threshold (parameter register
#3514 “Performance”).
Status: Maintenance request
This meter status is active when a measuring path has failed and the adaptive path failure
compensation is activated. This failure is compensated by the multi-path system
FLOWSIC600 DRU/DRU-S. Measurement continues with slightly reduced accuracy and the
volume continues to be counted in the volume counters. If a path fails when path
compensation is deactivated, the measuring system switches to the “Measurement invalid”
state.
Status “Maintenance request” is also active when system alarms 2002 (“No HART
communication with temperature sensor”), 2003 (“No HART communication with pressure
sensor”) or 2004 (“Maximum pulse output frequency exceeded”) are active.
Status: Measurement invalid
If the quality of the signals received from several measuring paths is insufficient, or the
Logbook is full or the measured values are outside the calibration range, the device must
mark the measured value as invalid and activate meter status “Measurement invalid”.
Measuring volumes are counted in the error volume counter. However, the device will
cyclically attempt to reestablish valid measurements. As soon as the signal quality and the
number of valid measurements allow it, the device switches automatically back to status
“Measurement valid” or “Maintenance request”.

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3PRODUCT DESCRIPTION
3.4.3 Impulse output and status signaling
* The device can be configured so that it outputs a fixed frequency for “Measurement invalid”. The
frequency to be output in this case can be configured in Reg.#3034 “ErrorFreq” (0-6 kHz).
** Default setting on delivery.
*** Optional setting on customer request.
The default setting for “Maintenance request”, “Configuration” and “Measurement invalid”
is “normally closed”.
Type approval
Pulse output signals can be parameterized according to requirements, as shown in the
following Table.
Output signal / LCD / port
Signal behavior
Measurement Maintenance request Configuration mode Measurement
invalid*
Impulse
output
signal
Inverted with error
signal **
Phase
shift
90 ° ***
Positive
flow rate
Negative
flow rate
Separate
direction
outputs
***
Positive
flow rate
Negative
flow rate
Single pulse output
***
Table 2: Impulse output

19
8026711/2021-06| SICK O P E R A T I N G I N S T R U C T I O N S | FLOWSIC600 DRU/DRU-S
Subject to change without notice
PRODUCT DESCRIPTION 3
* State “active” or “inactive” can be assigned the electrical switching state “normal open” or “normal closed”
using the configuration in FLOWgateTM (settings for Reg. #5101 on page “Parameters”.)
Measured values, parameters, messages and other information can be displayed on the
LCD display.
A blinking character in the top right corner of the LCD display indicates that a logbook
contains unacknowledged logbook entries. Depending on the type of entry this will be:
●“I” for Information
●“W” for Warning
●“E” for Error
Output signal / LCD / port
Signal behavior
Measurement Maintenance request Configuration mode Measurement
invalid
“Maintenance request”
Status signal
Status
“active / inactive” *
Measurement valid
Status
“active / inactive” *
Compensation of path
failure
“Undefined” “Undefined”
“Flow direction”
Status signal
Status
“active / inactive” *
Positive or negative
direction of flow
Status
“active / inactive” *
Positive or negative
direction of flow
“Undefined” “Undefined”
“Warning” Status
“active / inactive” *
Status
“active / inactive” * “Undefined” “Undefined”
LCD display
Display blinks Display blinks
RS485 serial interface
●Measured values, diagnosis information and parameters
●Measured data logging, diagnosis and configuration using the program FLOWgateTM
●Connection with external process control equipment through implemented MODBUS protocol
(data polling)
Table 3: Status output
+V 123456 m³
-V 1234 m³
1234 m³ FLOWSIC600
Configuration
+V 123456 m³ E
-V 1234 m³

20 8026711/2021-06| SICKO P E R A T I N G I N S T R U C T I O N S | FLOWSIC600 DRU/DRU-S
Subject to change without notice
3PRODUCT DESCRIPTION
3.5 Self-diagnosis with user warnings
During normal operation, the ratios of sound and path velocities, amplification values,
performance, and signal-to-noise ratios are continuously monitored. If these values exceed
set limits (customized User Warning limits), a warning signal will be generated. This allows
immediate measures to be taken to address a problem which could potentially impact
measurement quality. A message in the Warning Logbook documents the time of the event
and the specific User Warning limit which was exceeded.
A User Warning becomes active only if a User Warning limit has been continuously
exceeded for a certain time (the User Warning limit can be set in parameter “Warning/
Averaging Duration”).
During commissioning or operation, the User Warning limits can be adapted and activated
or deactivated in the “User Warnings” window in FLOWgateTM to suit individual application
requirements.
Fig. 4: Tab: “Diagnostics”
Fig. 5: Menu “System/Profile”
Fig. 6: Menu “Path Warnings”
●The “Warning” signal does not affect the functionality of the meter.
●All User Warning parameters - except for the parameter “Min. VOG for warnings” -
can be configured in the User Access Level “Operator” and without switching the
meter to Configuration mode.
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