SUTO S418-V Manual

English
Instruction and Operation Manual
S418-V
Compact Thermal Mass Flow Meter
for Vacuum Application
Pro-Inline)

Dear Customer,
Thank you for choosing our product.
Before you start up the device please read this manual in full and
carefully observe instructions stated in this manual. 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 the suitability for any other purpose.
SUTO is also not liable for consequential damage resulting from the
delivery, capability or use of this device.
2 S418-V

Table of 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 Electrical data.......................................................................9
6.3 Data logger.........................................................................10
6.4 Output signals.....................................................................10
6.5 Accuracy of flow..................................................................10
6.6 Accuracy of pressure............................................................11
7 Dimensional drawing..................................................................11
8 Installation...............................................................................13
8.1 Installation Considerations....................................................13
8.2 LED indicators.....................................................................14
8.3 Electrical connection ..........................................................14
9 Sensor signal outputs................................................................16
9.1 Analog output.....................................................................16
9.2 Pulse output.......................................................................16
9.3 Modbus Interface.................................................................18
9.3.1 Modbus Information.......................................................18
9.3.2 Connect Several S418-V to Modbus Master.......................19
9.3.2.1 Modbus/RTU Cable Length.........................................19
9.3.2.2 Modbus/RTU Wiring and Cable Type............................19
9.3.2.3 Create Daisy-Chain using RS-485 Splitter....................20
9.3.2.4 Topology of Modbus/RTU Daisy-Chain.........................21
10 Configuration..........................................................................23
11 Read and analysis of measurement data.....................................24
11.1 Features...........................................................................24
11.2 Operations........................................................................25
11.2.1 Logger configuration.....................................................25
11.2.2 Data read-out and analysis............................................25
12 Calibration..............................................................................27
13 Disposal or waste....................................................................27
14 Appendi - Specifications..........................................................28
14.1 Vacuum flow ranges...........................................................28
14.2 Error codes.......................................................................29
14.3 Order table.......................................................................29
S418-V 3

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.
WARNING!
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 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 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 system is only allowed by authorized
qualified personal.
4 S418-V

1 Safety 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 e ceed the permitted operating parameters.
•Make sure the product is operated in its permitted limitations.
•Do not e ceed 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 e plosive areas.
•Please observe the national regulations before/during installation
and operation.
Remarks
•It is not allowed to disassemble the product.
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 results.
•Always observe the direction of the flow when installing the
sensor. The direction is indicated on the housing.
•Do not e ceed the ma imum operation temperature at the sensors
tip.
•Avoid condensation on the sensor element as this will affect
accuracy enormously.
S418-V 5

1 Safety instructions
Storage and transportation
•Make sure that the transportation temperature is between
-30 ... +70°C.
•For storage and transportation it is recommended to use the
packaging which comes with the sensor.
•Please make sure that 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
Trademark Trademark owner
SUTO®SUTO iTEC
MODBUS®Modbus Organization, Hopkinton, USA
Android™,
Google Play
Google LLC
6 S418-V

3 RF exposure information and statement
3 RF exposure information 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 may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
NOTE: 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.
NOTE: 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 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.
S418-V 7

4 Application
4 Application
The S418-V is a Compact Thermal Mass Flow Meter that is designed to
measure the actual flow at the low pressure side of vacuum pumps
within the permissible operating parameters (in chapter 6 Technical
data).
The S418-V can measure the following values:
•Absolute volumetric flow (default unit: al/min)
•Total consumption (default unit: m3)
•Absolute pressure (default unit: bar)
Other units are configurable using the service app S4C-FS, which can be
downloaded from the Google Play store or our Website. For more
information, see chapter 10.
5 Features
•Inline thermal mass flow sensor virtually independent of pressure
and temperature changes.
•Process connection of G-type thread with DN8, DN15, DN20 and
DN25 available
•Very short response time.
•Particularly suitable for measuring at the point-of-use at the low
pressure side of vacuum pumps.
•Integrated display showing actual volumetric flow and absolute
pressure.
•Options for output signals:
•Analogue 4 … 20 mA and pulse output
•Modbus interface
•M-Bus interface
•Bluetooth interface for remote sensor settings
•Configurable through Android or iOS devices
•Embedded data logger capable of recording 5-million
measurement samples
8 S418-V

6 Technical data
6 Technical data
6.1 General data
FCC ID: 2ASK2-SUTO-003
Parameters Flow: Actual volumetric flow: l/min, m3/h,
m3/min, cfm
Consumption: m3, ft3
Medium pressure: bar, psi
Principle of measurement Thermal mass flow
Sensor Glass coated resistive sensor
Measuring medium Air
Ambient temperature
/Transport temperature
0 ... +50°C / -30 ... +70°C
Medium conditions 0 ... +50°C, rH<90% no condensation
Pressure range 0.01 ... 1.60 bar(a)
Material Process connection: aluminum alloy
Wetted parts: aluminum alloy
Top casing: PC + ABS
Protection class IP54
Dimensions See dimensional drawing on page 11.
Display 4-digit LED display
Tube diameter DN8, DN15, DN20, DN25
Process connection: G inner thread ISO 228-1
Weight 0.43 kg (DN8), 0.46 kg (DN15)
0.96 kg (DN20), 0.97 kg (DN25)
6.2 Electrical data
Power supply 15 ... 30 VDC, 120 mA @ 24 VDC
S418-V 9

6 Technical data
6.3 Data logger
Memory size Up to 8,000,000 samples.
Recording channels Up to 3 channels: Flow, consumption, and
pressure.
Logger programming Through mobile app S4C-FS
(Free for download on Google Play Store and
SUTO Website)
Logger readout Through the software S4A via USB
(Downloadable on the SUTO website)
6.4 Output signals
Analogue output Signal: 4 ... 20 mA, isolated
Scaling: 0 to ma flow
Ma load: 250R
Pulse output 1 pulse per consumption unit (m3 or ft3)
isolated switch, ma . 30 VDC, 200 mA
(pulse length: 10 ... 120 ms, depends on flow
rate)
Modbus output See section 9.3.
6.5 Accuracy of flow
Accuracy* ±(1.5% of reading + 0.3% FS)
Temperature coefficient < 0.1%/K FS
Pressure coefficient <0.5% / bar
Turndown ratio 100:1
Stated accuracy at Ambient/process temperature 23 °C ± 3 °C
Ambient/process humidity <90%
Process pressure at 0.6 MPa(g)
Repeatability ± 0.5% of reading
Sampling rate 10 samples / second
* The specified accuracy is valid only within the minimum and ma imum
flow rates that are indicated in section 14.1.
10 S418-V

6 Technical data
6.6 Accuracy of pressure
Accuracy ± 0.5% FS
Parameters Pressure: bar (default) or psi
Sensor Piezzo-resistive sensor
Measuring range 0.01 … 1.60 bar(a)
Remark: The total consumption value is saved to the permanent
memory every 5 minutes. If within these 5 minutes the device is
powered off, it will restore the last consumption value which was saved
in the last cycle.
7 Dimensional drawing
Unit：mm
DN8/DN15
S418-V 11

7 Dimensional drawing
DN20/DN25
12 S418-V

8 Installation
8 Installation
S418-V is delivered with following components:
Qty. Description Order no.
1
S418-V Compact Thermal Mass Flow Meter, DN8 /
S418-V Compact Thermal Mass Flow Meter, DN15 /
S418-V Compact Thermal Mass Flow Meter, DN20 /
S418-V Compact Thermal Mass Flow Meter, DN25
S695 4190
S695 4191
S695 4192
S695 4193
1 5 m cable with M8 connector and open ends A553 0136
1 USB cable A553 0130
1 Instruction and operation manual No
1 Calibration certificate No
8.1 Installation Considerations
•When installing the flow meter, always observe the arrows on the
housing showing the flow direction. The air/gas flow direction must
always be in line with the arrows on the housing.
•Due to the integrated flow conditioner, there are no additional
straight pipe requirements for good measurement. However for
best measurement, it is recommended 3-5 times inner diameter
straight pipe at the inlet.
S418-V 13

8 Installation
Note:
•The device is for indoor use only! For outdoor applications, ensure
a protection from solar radiation and rain. Always observe
operating temperature and humidity as stated in the the technical
data.
•It is strongly recommend not to install S415 permanently in wet
air/gas conditions, which e ists usually right after a compressor
outlet.
•The S418-V can be installed in horizontal or vertical pipes.
8.2 LED indicators
The S418-V provides four LED indicators on the display panel, which
indicate the status of the data logger, display, and Bluetooth connection
separately.
LED Function Status
Rec Indicator for the logger state On: NAND flash is formatting.
Flashing: Data logger is working.
lpm Indicator for the display state
(volumetric flow)
On: The display is showing the
volumetric flow rate.
Flashing: N/A
stat. Indicator for the Bluetooth
state
On: Bluetooth is connected.
Flashing: N/A
bar Indicator for the display state
(pressure)
On: The display is showing the
pressure value.
Flashing: N/A
8.3 Electrical connection
The flow sensor is equipped with two connectors “A” and “B”. By default
the sensor is delivered with one 5 m cable with a M8 connector on one
side and open wires on the other side. To make the S418-V work, one
14 S418-V

8 Installation
cable connection is sufficient. However, if the pulse output is to be used
or the supply and the signal need to be on separate cables, a second
connection cable must be ordered.
Legend to pin assignment
GNDMGround for Modbus
-VB Negative supply voltage
+VB Positive supply voltage
+Iisolated Positive 4...20 mA signal
(isolated)
-Iisolated Negative 4... 20 mA signal
(isolated)
D+ Modbus data +
D- Modbus data -
SW Isolated pulse output (switch)
M-Bus M-Bus data
NA Not Applicable
Pin assignment connector plug M8
Output type Connector Pin 1 Pin 2 Pin 3 Pin 4
Modbus A D- -VB +VB D+
B D- GNDMNA D+
Pulse and
analog
A -Iisolated -VB +VB +Iisolated
B -Iisolated SW SW +Iisolated
M-Bus A M-Bus -VB +VB M-Bus
B M-Bus NA NA M-Bus
Wire color Brown White Blue Black
ATTENTION!
Do not screw the M8 plug using force. Otherwise, it may
damage the connecting pins.
S418-V 15

9 Sensor signal outputs
9 Sensor signal outputs
9.1 Analog output
The sensor provides an analog output of 4 ... 20 mA. This output can be
scaled to match a desired measuring range. Standard scaling is from 0
to the ma flow. The corresponding flow in different pipe sizes can be
found in chapter 14.
9.2 Pulse output
The sensor outputs one pulse per consumption unit. This pulse output
can be connected to an e ternal pulse counter to count the total
consumption. The number of m3 per second are summed up and
indicated after one second. Pulse length depends on flow rate.
16 S418-V

9 Sensor signal outputs
Volumetric
flow
[m3/s]
Volumetric
flow
[m3/h]
Pulse length
[ms]
Max. pulse
output
per hour
≦ 3≦ 10800 120 1080
> 3 > 10800 60 2880
> 6 > 21600 30 3960
Pulse connection diagram
Variant 1:
Variant 2:
S418-V 17

9 Sensor signal outputs
9.3 Modbus Interface
9.3.1 Modbus Information
The default settings of the Modbus interface are as follows:
Mode RTU
Baud rate 19200
Device address Last two digits of the serial number
Framing / parity / stop bit 8, N, 1
Response timeout 1 second
Response delay 0 ms
Inter-frame spacing 7 char
Response message that the device returns to the master:
•Function code: 03
The information of the byte order is shown in the table below:
Byte
Order
Sequence Data
Type
1st 2nd 3rd 4th
1-0-3-2 Byte 1
(MMMMMMMM*)
Byte 0
(MMMMMMMM *)
Byte 3
(SEEEEEEE)
Byte 2
(EMMMMMMM *) FLOAT
1-0-3-2 Byte 1 Byte 0
LSB
Byte 3
MSB Byte 2 UINT32 INT32
1-0 Byte 1
MSB
Byte 0
LSB --- --- UINT16 INT16
1-0 Byte 1
XXX *
Byte 0
DATA --- --- UINT8 INT8
* S: Sign, E: E ponent, M: Mantissa, XXX: no value
Note: Modbus communication settings as well as other settings can be
changed by the service App S4C-FS or through the windows based
Service Software.
Available measurement channels
Channel name Resolution Format Length Register
address
Flow 0.1 FLOAT 4-byte 6
Consumption 1 UNIT32 4-byte 8
Pressure 0.01 FLOAT 4-byte 2
18 S418-V

9 Sensor signal outputs
9.3.2 Connect Several S418-V to Modbus Master
The S418-V with Modbus/RTU interface can be easily daisy-chained to a
Modbus Master device. This master can be either SUTO displays and
gateways or any third-party Modbus/RTU master.
Through this method you can add up to 16 flow meters to the master
device.
9.3.2.1 Modbus/RTU Cable Length
A Modbus/RTU bus line has limitations which shall not be e ceeded,
otherwise the communication might not be stable.
•The ma imum total bus length must not e ceed 1200 m.
•The stub length to each node must not e ceed 30 cm.
See the picture below for details.
9.3.2.2 Modbus/RTU Wiring and Cable Type
To ensure a stable communication a twisted-pair bus cable must be
chosen to set up the Modbus/RTU communication.
•Bus-cable specifications must follow the EIA485 Standard, must be
twisted pair and shielded, for e ample 2 2 0.22 mm2, Li-2YCY
(A553 0123).
S418-V 19

9 Sensor signal outputs
•The shield must be connected at one end to the master GND
connection.
•At the end of the bus, a 120 Ohm resistor should be placed a
termination resistor.
See the below picture for details.
9.3.2.3 Create Daisy-Chain using RS-485 Splitter
To connect the S418-V to the daisy-chain, the RS-485 splitter (A554
3310) and the M8 to M12 converter cable (A553 0161) are needed.
Furthermore place a M12 termination resistor (C219 0055) at the last
splitter in the daisy-chain, as show in the figure below.
20 S418-V