SUTO S431 OEM Manual
English
Instruction and Operation Manual
S431 OEM
Pitot Tube Compressor Flow Meter (Inline)
Dear Customer,
Thank you for choosing our product.
Before starting up the device please read this manual in full and
carefully observe the instructions stated. The manufacturer cannot be
held liable for any damage which occurs as a result of non-observance
or non-compliance with this manual.
Should the device be tampered with in any manner other than a
procedure which is described and specified in the manual, the warranty
is void and the manufacturer is e empt from liability.
The device is designed e clusively for the described application.
SUTO offers no guarantee for suitability for any other purpose. SUTO is
also not liable for consequential damage that results from the delivery,
capability, or use of this device.
2 S431 OEM
Table o contents
1 Safety instructions......................................................................4
2 Registered trademarks.................................................................6
3 RF e posure information and statement.........................................7
4 Application.................................................................................8
5 Features....................................................................................8
6 Technical data.............................................................................9
6.1 General data.........................................................................9
6.2 Signal / Interface and Supply................................................10
6.3 General data.......................................................................10
6.4 Flow ranges........................................................................12
7 Dimensional drawing..................................................................13
8 Installation...............................................................................14
8.1 Installation Options..............................................................14
8.2 Inlet and utlet sections ........................................................14
8.3 Welding Nipple and Welding Fi ture.......................................16
8.4 Removing the sensor ..........................................................19
8.5 Performing the electrical connection.......................................20
9 Configuration............................................................................21
9.1 Registering.........................................................................21
9.2 Using Service App S4C-FS....................................................22
9.2.1 Flow Settings..............................................................23
9.2.2 Unit Settings...............................................................24
9.2.3 Calibration..................................................................25
9.2.4 Uploading Settings......................................................26
9.2.5 Downloading Settings..................................................26
10 Signal outputs.........................................................................27
10.1 Analog output...................................................................27
10.2 Pulse output......................................................................27
10.2.1 Pulse connection diagram...........................................29
10.3 Modbus output .................................................................30
11 Maintenance...........................................................................32
12 Disposal or waste....................................................................32
S431 OEM 3
1 Safety instructions
1 Sa ety instructions
Please check i this instruction manual matches the
product type.
Please observe all notes and instructions indicated in this
manual. It contains essential information that must be observed
before and during installation, operation, and maintenance.
Therefore this instruction manual must be read carefully by the
technician and by the responsible user / qualified personnel.
This instruction manual must be available at the operation site of the
flow sensor at any time. In case of any obscurities or questions
regarding this manual or the product, please contact the manufacturer.
WARNING!
Compressed air!
Any contact with quickly escaping air or bursting
parts o the compressed air system can lead to
serious injuries or even death!
•Do not e ceed the ma imum permitted pressure range (see
sensors label).
•Only use pressure-tight installation material.
•Avoid that persons get hit by escaping air or bursting parts of the
instrument.
•The system must be pressureless during maintenance work.
WARNING!
Voltage used or supply!
Any contact with energized parts o the product
might lead to an electrical shock which can lead to
serious injuries or even death!
•Consider all regulations for electrical installations.
•The system must be disconnected from any power supply during
maintenance work.
•Any electrical work on the system is only allowed by authorized
qualified personal.
4 S431 OEM
1 Safety instructions
ATTENTION!
Permitted operating parameters!
Observe the permitted operating parameters, any
operation exceeding this parameters can lead to
mal unctions and might lead to damage on the
instrument or the system.
•Do not e ceed the permitted operating parameters.
•Make sure that the product is operated in its permitted limitations.
•Do not e ceed or undercut the permitted storage and operating
temperature and pressure.
•The product should be maintained and calibrated frequently, at
least annually.
General sa ety instructions
•It is not allowed to use the product in e plosive areas.
•Please observe the national regulations before/during installation
and operation.
Remarks
•It is not allowed to disassemble the product.
•Always use a spanner to mount the product properly.
ATTENTION!
Measurement values can be a ected by mal unction!
The product must be installed properly and
requently maintained. Otherwise it might lead to
wrong measurement values, which can lead to
wrong results.
•Always observe the direction of the flow when installing the
sensor. The flow direction is indicated on the housing.
•Do not e ceed the ma imum operating temperature at the sensor
tip.
•Avoid condensation on the sensor element because it will affect
the accuracy enormously.
S431 OEM 5
1 Safety instructions
Storage and transportation
•Make sure that the transportation temperature of the sensor is
between -30°C ... +70°C.
•For transportation it is recommended to use the packaging which
comes with the sensor.
•Please make sure that the storage temperature of the sensor is
between -30 ... +70°C.
•Avoid direct UV and solar radiation during storage.
•For the storage, the humidity must be <95% with no
condensation.
2 Registered trademarks
Trademark Trademark owner
SUTO®SUTO iTEC
MODBUS®Modbus Organization, Hopkinton, USA
Android™,
Google Play
Google LLC
6 S431 OEM
3 RF e posure information and statement
3 RF exposure in ormation and statement
This equipment complies with FCC RF radiation e posure limits set forth
for an uncontrolled environment. This equipment should be installed
and operated with minimum distance of 20 cm between the radiator and
your body.
This device complies with part 15 of the FCC rules. Operation is subject
to the following two conditions: (1) this device might not cause harmful
interference, and (2) this device must accept any interference received,
including interference that might cause undesired operation.
Remark: The manufacturer is not responsible for any radio or TV
interference caused by unauthorized modifications to this equipment.
Such modifications could void the user’s authority to operate the
equipment.
Remark: This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, might cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
•Consult the dealer or an e perienced radio/TV technician for help。
•This device and its antenna(s) must not be co-located or operating
in conjunction with any other antenna or transmitter.
S431 OEM 7
4 Application
4 Application
The S431 OEM Pitot Tube Compressor Flow Meter (Inline) is designed to
measure the air delivery of a compressor. It can be installed at the
discharge side inside the compressor where wet and contaminated air
occurs.
The S431 can measure the following parameters for compressed air or
gases:
Parameter De ault unit
Actual velocity m/s
Volumetric flow m3/h
Pressure bar
Total consumption m3
Temperature °C
5 Features
•Flow and consumption measurement in wet or high mass flow or
velocity applications.
•Measurement at the compressor outlet.
•Installation on welding nipple with thread connection.
•No straight pipe requirements.
•Robust design for harsh environment: ambient temperatures up to
90 °C, vibration proofed.
•No mechanical wear parts.
•One sensor for DN50 ... DN900.
•Auto-calibration: sensor adjust itself regularly.
•User calibration through mobile App at compressor test stand.
•Analogue and pulse output or Modbus/RTU.
8 S431 OEM
6 Technical data
6 Technical data
6.1 General data
FCC ID: 2ASK2-SUTO-006
Flow
Accuracy * 1.5% of reading ±0.3% FS
Selectable units
Volumetric Flow:
Mass Flow:
Actual Velocity:
m³/h, m³/min, l/min, l/s, cfm
kg/h, kg/min, kg/s, t/h, lb/h
m/s, ft/min
Measuring range See the table in section 6.4.
Repeatability 0.5 % of reading
Sensor Differential pressure sensor with pitot tube
Sampling rate 3/sec
Turndown ratio 10:1
Response time (t90) 2 sec
Consumption
Selectable units m³, ft3, t, lb, l, kg
Pressure
Accuracy 0.5 % FS
Selectable units bar, psi, kPa, MPa
Measuring range 0 ... 16 bar(g)
Sensor Piezzo resistive sensor
Temperature
Accuracy 0.5 °C
Selectable units °C, °F
Measuring range -40 ... +230 °C
Sensor Pt1000
Re erence conditions
Selectable conditions 20 °C 1000 mbar (ISO1217)
0 °C 1013 mbar (DIN1343)
freely adjustable
S431 OEM 9
6 Technical data
6.2 Signal / Inter ace and Supply
Analog output
Signal 4 ... 20 mA, isolated
Scaling 0 ... ma flow
Load 250R
Update rate 1/sec
Pulse output
Signal Ma 30 V, 200 mA
Scaling 1 pulse per consumption unit
Fieldbus
Protocol Modbus/RTU
Supply
Voltage supply 21 ... 27 VDC
Current consumption 150 mA (1.5 A peaks for 3 sec)
6.3 General data
Con iguration
Wireless S4C-FS App for mobile phones
Material
Housing PC + ABS
Wetted parts Stainless steel 1.4404 (SUS 316L)
Miscellaneous
Electrical connection 1 M12 (6-pole)
Protection class IP65
Approvals CE, RoHS, FCC
Process connection M32 1.5 mm, with SW36 wrench to fasten the
nut
Weight 1.4 kg
Operating conditions
Medium Wet/dry air, other gases
Medium quality Non corrosive
Medium temperature -20 ... +120 °C
Medium humidity No requirements
10 S431 OEM
6 Technical data
Operating pressure 0 ... 16 bar(g)
Ambient temperature -20 ... +90 °C
Ambient humidity <95 % rH
Storage temperature -30 ... 70 °C
Transport temperature -10 ... 70 °C
Pipe sizes >=DN50
* The specified accuracy is valid only within the minimum and ma imum flows
that are indicated in section 6.4.
S431 OEM 11
6 Technical data
6.4 Flow ranges
The stated measuring ranges under following conditions:
•Standard flow in air
•Reference pressure: 1000 mbar
•Reference Temperature: +20 °C
Tube Volumetric Flow
Inch mm
m³/h m³/min c m
Min Max Min Max Min Max
2” 53.1 130 1,298 2.16 21.6 76 764
2½” 68.9 227 2,274 3.79 37.9 134 1,338
3” 80.9 318 3,175 5.29 52.9 187 1,869
4” 100 488 4,880 8.13 81.3 287 2,872
5” 125 763 7,625 12.71 127.1 449 4,488
6” 150 1,099 10,993 18.32 183.2 647 6,470
8” 200 1,961 19,611 32.69 326.9 1,154 11,543
10” 250 3,064 30,642 50.07 510.7 1,804 18,035
12” 300 4,412 44,125 73.54 735.4 2,597 25,971
Remark:
•Flow range for Air at 6 bar(g), 50 °C and 90% humidity.
•The flow measurement range is related to the actual inner
diameter of the installed pipe. Differences in the inner diameter
will result in different ma imum and minimum flow values. The
e act range can be calculated using Flow Range software, which
can be downloaded from www.suto-itec.com.
•To fast access the tool download page, enter "flowrange" (without
spaces) in the search field, and then click the search result.
12 S431 OEM
8 Installation
8 Installation
Before you install the sensor, make sure that all components listed
below are included in your package.
Qty Description Order No.
1 S431 OEM Pitot Tube
Compressor Flow Meter (Inline)
Horizontal pipes: S695 4310
Option reverse flow direction: A4319
Vertical pipes: S695 4311
1 Output option
Analog / Pulse
Modbus/RTU
A4314
A4315
1 O-ring NA
1 M12 cable 5 m with open ends A553 0144
1 Instruction manual NA
1 Calibration certificate NA
Remark:
For the various installations welding nipples are available and need
to be ordered separately.
8.1 Installation Options
There are 2 installation options:
•Installation inside compressors
This installation requires a calibration of the S431 together with
the compressor in the compressor maker's test stand.
•Installation outside compressors
This installation requires a straight pipe of a certain length. For the
straight pipe requirements, see the section 8.2.
8.2 Inlet and utlet sections
Unhindered flow characteristics are achieved if the section in front of the
sensor (inlet) and behind the sensor (outlet) are sufficiently long,
absolutely straight, and free of obstructions such as edges, seams,
curves, and so on.
Make sure that enough space e ists at your site for an adequate
installation as described in this manual.
14 S431 OEM
8 Installation
ATTENTION!
The wrong measurement might occur i the sensor is
not installed correctly.
•Pay careful attention to the design of the inlet and outlet sections.
Obstructions can cause counter-flow turbulence as well as
turbulence in the direction of the flow.
•The sensor is for indoor use only! At an outdoor installation, the
sensor must be protected from solar radiation and rain.
Remark: If there is any combination of the following situations, the
longest straight inlet section must be maintained.
E pansion Reduction
90° Bend 2×90° Bend
S431 OEM 15
8 Installation
Three dimensional Bend T-piece
Shut-off valve Filter or similar (unknown objects)
8.3 Welding Nipple and Welding Fixture
In order to install the sensor, first a hole must be made as follows:
•The diameter of the hole is 18 mm for the installation in a
horizontal pipe.
•The diameter of the hole is 21 mm for the installation in a vertical
pipe.
Then a welding nipple will be welded onto the pipe. There are 4 types
available:
Order No. Description
A4310 Welding nipple DN50 ... DN80 for horizontal pipes installation
A4311 Welding nipple DN100 ... DN900 for horizontal pipes installation
A4312 Welding nipple DN50 ... DN80 for vertical pipes installation
A4313 Welding nipple DN100 ... DN900 for vertical pipes installation
16 S431 OEM
8 Installation
The types of the welding fi tures and their order numbers are as
follows:
Order No. Description
A695 4310 Welding fi ture DN50 ... DN80 for horizontal pipe
installation
A695 4311 Welding fi ture DN100 ... DN900 for horizontal pipe
installation
A695 4312 Welding fi ture DN50 ... DN80 for vertical pipe
installation
A695 4313 Welding fi ture DN100 ... DN900 for vertical pipe
installation
8.4 Removing the sensor
WARNING!
Removing sensors under pressure can be dangerous!
Be aware that the sensor can be shot out o the ball
valve i you do not care ully ollow the steps
described below!
For your information: The sensor is e posed to a force of 18 kg at the
8-bar(g) system pressure; a force of 32 kg at 16-bar(g) system
pressure!! Hold the sensor very tight when releasing the clamp sleeve.
Follow the steps below to remove the sensor:
1. Hold the flow sensor.
2. Release the connection nut at the connection thread.
3. Pull out the shaft slowly.
4. The measuring section can be closed with the optional closing cap
so that the system can operate normally during maintenance of
the sensor.
Follow the steps below to re-install the sensor after maintenance:
1. Place the O-ring into the recess of the connection nut.
2. Insert the sensor back to the pipe.
3. Tighten the connection nut.
S431 OEM 19
8 Installation
8.5 Per orming the electrical connection
The S431 has a 6-pole M12 connector for power supply and signal
output.
6-pole M12 cable with open ends included
Female (View from front)
Pin assignment connector plug M12 (6-pole)
Output Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6
Analog -Iisolated -VB +VB SW SW +Iisolated
Modbus GNDM-VB +VB D+ D- N/A
Wire color Blue White Red Yellow Green Black
Legend or pin assignment
GNDMGround for Modbus/RTU
-VB Negative supply voltage
+VB Positive supply voltage
+Iisolated Positive 4 … 20 mA signal (isolated)
-Iisolated Negative 4 ... 20 mA signal (isolated)
SW Isolated pulse output (switch)
D+ Modbus/RTU data +
D- Modbus/RTU data -
N/A Not applicable
ATTENTION!
Do not screw the M12 connector using orce.
Otherwise it might damage the connection pins.
20 S431 OEM
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