SUTO S401-S Manual
English
Instruction and operation manual
S401
Thermal mass flow sensor
Dear Customer,
Thank you for choosing our product.
Please read the operating instructions in full and carefully observe them
before starting up the device. The manufacturer cannot be held liable for
any damage which occurs as a result of non-observance or non-
compliance with this manual.
hould 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 exempt from liability.
The device is destined exclusively for the described application.
UTO offers no guarantee for the suitability for any other purpose. UTO
is also not liable for consequential damage resulting from the delivery,
capability or use of this device.
2 S401
Table of contents
1 afety instructions......................................................................4
2 Registered trademarks.................................................................6
3 RF exposure information and statement.........................................7
4 Application.................................................................................8
5 Features....................................................................................8
6 Technical data.............................................................................9
6.1 General................................................................................9
6.2 Electrical data.....................................................................10
6.3 Output signals.....................................................................10
6.4 Accuracy ...........................................................................10
6.5 Volumetric flow ranges.........................................................11
7 Dimensional drawing..................................................................12
8 Determining the installation point................................................13
8.1 Reserving inlet and outlet sections.........................................14
9 ensor installation ....................................................................16
9.1 Installation requirements......................................................16
9.2 Installation procedure .........................................................17
9.2.1 Calculating the installation depth..................................17
9.2.2 Installing the sensor....................................................19
9.2.3 Removing the sensor...................................................20
9.3 Electrical connection............................................................20
9.3.1 M12 connection pins...................................................21
9.3.2 Ethernet connection....................................................23
10 ensor signal outputs...............................................................25
10.1 Analog output...................................................................25
10.2 Pulse output......................................................................25
10.2.1 Pulse connection diagrams (A1410).............................27
10.2.2 Pulse connection diagrams (A1413).............................27
10.3 Modbus output..................................................................29
10.4 M-Bus output....................................................................30
11 ensor display (optional)..........................................................31
11.1 tarting process................................................................32
11.2 Configuration using the display............................................33
12 ervice App 4C-F ................................................................34
13 Calibration..............................................................................35
14 Maintenance...........................................................................35
15 Disposal or waste....................................................................35
16 Appendix A - Modbus communication example............................36
3 S401
1 Safety instructions
1 Safety instructions
Please check if this instruction manual matches with the
product type.
Please observe all notes and instructions indicated in this
manual. It contains essential information which must be
observed before and during installation, operation and
maintenance. Therefore this instruction manual must be read carefully
by the technician as well as 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.
ARNING!
Compressed air!
Any contact with quickly escaping air or bursting
parts of the compressed air system can lead to
serious injuries or even death!
•Do not exceed the maximum permitted pressure range (see the
sensors label).
•Only use the pressure-tight installation material.
•Avoid that persons get hit by escaped air or bursting parts of the
instrument.
•The system must be pressure-less during maintenance work.
ARNING!
Voltage used for supply!
Any contact with energized parts of the product, may
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.
•Any electrical work on the system is only allowed by authorized
qualified personal.
4 S401
1 afety instructions
ATTENTION!
Permitted operating parameters!
Observe the permitted operating parameters, any
operation exceeding this parameters can lead to
malfunctions and may lead to damage on the
instrument or the system.
•Do not exceed the permitted operating parameters.
•Make sure the product is operated in its permitted limitations.
•Do not exceed or undercut the permitted storage and operation
temperature and pressure.
•The product should be maintained and calibrated frequently, at
least annually.
General safety instructions
•It is not allowed to use the product in explosive areas.
•Please observe the national regulations before/during installation
and operation.
Remarks
•It is not allowed to disassemble the product.
•Always use spanner to mount the product properly.
ATTENTION!
Measurement values can be affected by malfunction!
The product must be installed properly and
frequently maintained, otherwise it may lead to
wrong measurement values, which can lead to
wrong result.
•Always observe the direction of the flow when installing the
sensor. The direction is indicated on the housing.
•Do not exceed the maximum operation temperature at the sensors
tip.
•Avoid condensation on the sensor element as this will affect
accuracy enormously.
S401 5
1 Safety instructions
Storage and transportation
•Make sure that the transportation temperature of the sensor
without display is between -30 ... +70°C and with display between
-10 ... +50°C.
•For storage and transportation it is recommended to use the
packaging which comes with the sensor.
•Please make sure the storage temperature of the sensor is
between -10 ... +50°C.
•Avoid direct UV and solar radiation during storage.
•For the storage the humidity must be <90%, no condensation.
2 Registered trademarks
UTO®
Registered trademark of UTO iTEC
MODBU ®
Registered trademark of the Modbus Organization, Hopkinton, U A
HART®
Registered trademark of the HART Communication Foundation, Austin,
U A
PROFIBU ®
Registered trademark of the PROFIBU User Organization, Karlsruhe,
Germany
Bluetooth® word mark and logos
Registered trademarks of Bluetooth IG, Inc.
Android™, Google Play
Trademarks of Google LLC
6 S401
3 RF exposure information and statement
3 RF exposure information and statement
This equipment complies with FCC RF radiation exposure 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 may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Remark: The manufacturer is not responsible for any radio or TV
interference caused by unauthorized modifications to this equipment.
uch 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, may 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 experienced 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.
S401 7
4 Application
4 Application
The 401 is a flow sensor that is designed to measure the consumption
of compressed air and gases within the permissible operating
parameters ( ee chapter 6 Technical data ).
The 401 can measure the following values:
•Volumetric flow of the compressed air or gas (default unit: m3/h).
•Total consumption of the compressed air or gas (default unit: m3).
Other units are configurable using the 4C-F android app, the optional
display or the service kit.
The 401 flow sensor is mainly used in compressed air or gas systems
in industrial environments, and is not developed to be used in explosive
areas. For the use in explosive areas please contact the manufacturer.
5 Features
•Insertion type flow sensor for easy installations under pressure
through a ball valve.
•Thermal mass flow measurement, virtually independent of pressure
and temperature changes.
•IP65 casing provides robust protection in the industrial environment.
•Very fast response time.
•High accuracy and wide measuring ranges. pecial ranges on request.
•Tube diameters from 1/2” to 12”, larger diameters available on
request.
•Optional integrated display, showing volumetric flow and
consumption.
•Optional Modbus output.
•Optional M-Bus output.
•Optional Power over Ethernet (PoE).
8 S401
6 Technical data
6 Technical data
6.1 General
FCC ID: 2A K2- UTO-001
Parameters tandard unit flow: m3/h
Other units: m3/min, l/min, l/s, cfm,
kg/h, kg/min, kg/s
Consumption units: m3, ft3 , kg
Reference conditions I O1217 20°C 1000 hPa ( tandard-Unit)
DIN1343 0°C 1013.25 hPa (Norm-Unit)
Principle of
measurement
Thermal mass flow
ensor Glass coated resistive sensor
Measuring medium Air, gas (non corrosive gas)
Range versions tandard range: 92.7 m/s
Max range: 185 m/s
High speed range: 220 m/s
Low range: 1/3 of standard range
Vacuum / Atmospheric range ：1/3 of standard
range
Operating temperature -30 ... +140°C fluid temperature
-30 ... +70°C casing
-10 ... +50°C display (optional)
Humidity of the meas.
medium
< 90%, no condensation
Operating pressure Up to 5.0 MPa (> 1.6 MPa needs the installation
device)
Housing material PC + AB
Material of the probe
tube, probe tip (wetted
parts)
tainless steel 1.4404 ( U 316L)
Protection class IP65
Dimensions ee dimensional drawing on page 12.
Display (optional) 2.4” color graphics display with keypad
S401 9
6 Technical data
Tube diameter 1/2” to 12” (bigger diameters available on
request)
Process connection G1/2” (I O 228/1)
Weight 0.9 kg (220 mm standard)
0.85 kg (160 mm), 0.95 kg (300 mm),
1.0 kg (400 mm)
6.2 Electrical data
Power supply 15 ... 30 VDC, 200 mA
44 ... 57 VDC, 120 mA (PoE)
6.3 Output signals
Analogue output ignal: 4 ... 20 mA, isolated
caling: 0 to max flow
Max load: 250R
Pulse output 1 pulse per consumption unit, isolated switch,
max. 30 VDC, 200 mA (pulse length: 10 ... 120
ms, depends on flow rate)
Modbus output ee section 10.3.
M-Bus output ee section 10.4。
6.4 Accuracy
Accuracy* ±(1.5% of reading + 0.3% F ) (optional 1% of
reading)
Temperature drift: < 0.05%/K
tated accuracy at Ambient/process temperature 23°C ± 3°C
Ambient/process humidity <90%
Process pressure at 0.6 MPa
Repeatability ± 0.25% of reading
*pecified accuracy is valid only within the minimum and maximum flow
rates that are indicated in section 6.5.
10 S401
6 Technical data
6.5 Volumetric flow ranges
Inch DN Di
(mm)
S401-S
(m³/h)
S401-M
(m³/h)
S401-H
(m³/h)
½" DN15 - - -
¾" DN20 - - -
1" DN25 27.3 0.5 ... 147.7 0.6 ... 294.7 0.6 ... 356.9
1¼" DN32 36.0 0.9 ... 266.3 1.2 ... 531.5 1.2 ... 643.5
1½" DN40 41.9 1.2 ... 366.7 1.5 ... 731.9 1.5 ... 886.2
2" DN50 53.1 2.0 ... 600.1 2.5 ... 1197.6 3 ... 1450.0
2½" DN65 68.9 3.5 ... 1026.5 5.0 ... 2048.6 5 ... 2480.4
3" DN80 80.9 5.0 ... 1424.4 7.0 ... 2842.7 7 ... 3441.9
4" DN100 100.0 10 ... 2183.3 12 ... 4357.2 12 ... 5275.7
5" DN125 125.0 13 ... 3419.6 18 ... 6824.4 18 ... 8263.1
6" DN150 150.0 18 ... 4930.1 25 ... 9838.9 25 ... 11913.1
8" DN200 200.0 26 ... 8785.6 33 ... 17533.3 42 ... 21229.5
10" DN250 250.0 40 ... 13743.9 52 ... 27428.5 60 ... 33210.7
12" DN300 300.0 60 ... 19814.8 80 ... 39544.1 100 ... 47880.4
Remarks:
•The measuring ranges are stated under following conditions:
tandard flow in air
Reference pressure: 1000 hPa
Reference Temperature: +20°C
•To calculate flow ranges based on pipe and reference conditions in
your site, download and install the "Flow range calculator" tool for
free from http://www.suto-itec.com.
•To fast access the tool download page, enter "flowrange" (without
spaces) in the search field and click the search result.
S401 11
8 Determining the installation point
8 Determining the installation point
In order to maintain the accuracy stated in the technical data, the
sensor must be insert in the center of a straight pipe section with
unhindered flow characteristics.
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 etc..
Please consider that enough space exists at your site for an adequate
installation as described in this manual. Please note the following:
ATTENTION!
rong measurement is possible if the sensor is not
installed correctly.
•Careful attention must be paid to the design of the inlet and outlet
section. 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.
•It is strongly recommend not to install 401 permanently in wet
environment, which exists usually right after a compressor outlet.
S401 13
8.1 Reserving inlet and outlet sections
Because the thermal measuring principle may be sensible to inlet and
outlet conditions, we recommend the following minimum straight inlet
and outlet sections be reserved to ensure an accurate measurement.
The 401 sensors should be always installed upstream from obstacles
like valves, filter, reductions etc. In common, sensors should be installed
as far as possible away from any disturbances.
Remark: If there is any combination of the below situations, the longest
straight inlet section must be maintained.
•Expansion •Reduction
•90° Bend •2 x 90° Bend
14 S401
9 Sensor installation
9 Sensor installation
Before installing the sensor, please make sure that all components listed
below are included in your package.
Qty Description Item no.
1 ensor 695 4100
695 4101
695 4102
695 4103
1 ealing ring NA
1 Alignment key NA
2 Depending on orders:
M12 plug or M12 cable
Plug: C219 0059
Cable: A553 0104/A553 0105/A553 0146
1 Instruction manual NA
1 Calibration certificate NA
9.1 Installation requirements
To install the sensor, a ball valve or a nozzle is needed.
•The inner thread must be G 1/2”.
•The diameter of the hole must be ≥ 13 mm, otherwise the shaft can
not be inserted.
16 S401
9 ensor installation
9.2 Installation procedure
The following steps explain the procedure of an appropriate installation.
9.2.1 Calculating the installation depth
Center installation is the default and recommended installation method.
The sensor tip must be placed in the center of the pipe. The meter shaft
has a scale engraved. To determine the right position, please calculate
the insertion depth as described below.
Insertion depth=x+y
x=OD
2;OD is Outer Diameter of the pipe
y=length of the ball valve
Calculation example:
A 2”-diameter pipe and an 87 mm-
length ball valve:
OD=60.3 mm
x=OD
2=60.3 mm
2=30.15 mm
y=87 mm ;
Insertion depth
= 30.15 mm +87 mm=117.15 mm
S401 17
9 Sensor installation
For bigger pipe diameters (>200 mm), the sensor can be installed with
only a 100 mm insertion depth as the alternative. This allows one sensor
to be used for all pipe sizes.
Remark: To enable the 100 mm installation method, use the 4C-F
app or the service software.
Insertion depth=x+y+100
x is the all thickness of pipe
y = length of the ball valve
Calculation example:
A 12”-diameter pipe with the wall
thickness of 9 mm and a 87 mm-
length ball valve.
x=9 mm ; y=87 mm
Insertion depth
= 9 mm+87 mm+100 mm=196 mm
18 S401
9 ensor installation
9.2.2 Installing the sensor
First please observe the flow direction
indicated on the housing or on the
shaft. It must match the flow direction
of the compressed air or gas.
1. Close the ball valve.
2. Make sure that he probe tip is completely
covered by the connection head (see the photo
on the left).
3. Underlay the “O-ring” at the thread of the
connection head before screwing the flow
sensor.
4. crew the connection head tightly to the ball
valve and align flow sensor to flow direction.
5. Open the ball valve.
6. Move the shaft slightly to the determined
insertion depth by means of the scale on the
shaft.
7. Tighten the locking nut so that the flow
sensor can no longer be moved by the pressure
in the pipe but can be moved manually.
8. With the aid of the alignment key, make sure
that the actual flow direction is same as the
arrow shows. (The angle deviation should not
be larger than ±2°.)
S401 19
9 Sensor installation
9. Double check the installation depth because the shaft might be
pushed away from its original position by the compressed gas.
10. Tighten the locking nut with clamping torque 20 … 30 Nm.
9.2.3 Removing the sensor
1. Hold the flow sensor firmly.
2. Release the locking nut.
3. Pull out the shaft slowly until the value “10” can be read at the
scale.
4. Close the ball valve.
5. Release the connection head and unscrew the flow sensor.
9.3 Electrical connection
The flow sensor is equipped with two Connector plugs “A” and “B”. The
cables are connected to the sensor through the M12 connector.
Connector A
Connector B
20 S401
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