SUTO S452 Manual

English
Instruction and operation manual
S452
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.
Should the device be tampered with in any manner other than a
procedure which is described and specified in the manual, the warranty
is cancelled 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 S452

Table of contents
1. Safety instructions.......................................................................4
2. Application.................................................................................7
3. Features.....................................................................................7
4. Technical data.............................................................................8
4.1 General data..........................................................................8
4.2 Electrical data........................................................................9
4.3 Output-signals.......................................................................9
4.4 Accuracy ..............................................................................9
5. Dimensional drawing..................................................................10
6. Determination of the installation point..........................................10
7. Inlet and outlet section..............................................................11
8. Sensor installation ....................................................................12
8.1 Removal of the flow sensor ...................................................13
8.2 Electrical connection ............................................................14
9. Signal outputs...........................................................................16
9.1 Analog output ......................................................................16
9.2 Pulse output.........................................................................16
9.3 HART output .......................................................................17
9.4 Modbus output ....................................................................17
9.5 M-Bus output ......................................................................18
10. Configuration..........................................................................19
11. Optional e tra accessories.........................................................21
11.1 Sensor display....................................................................21
11.2 Service kit..........................................................................21
12. Calibration..............................................................................21
13. Maintenance............................................................................22
14. Disposal or waste.....................................................................22
15. Warranty................................................................................22
Appendi A – Flow measurement ranges..........................................24
A.1 Volumetric flow ranges..........................................................24
A.2 Scaling tables for analogue output..........................................24
Appendi B - Modbus communication e ample..................................25
Appendi C - LRC and CRC calculation..............................................27
S452 3

1. Safety instructions
1. Safety instructions
Please check if this instruction manual accords to 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.
W RNING!
Compressed air!
ny 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.
W RNING!
Voltage used for supply!
ny contact with energized parts of the product, may
lead to a 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 S452

1. Safety instructions
TTENTION!
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 allowed to use the product in e plosive areas. Please contact
the manufacturer.
•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.
TTENTION!
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 the
accuracy enormously.
S452 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 ... +60°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 -10 ... +50°C.
•Avoid direct UV and solar radiation during storage.
•For the storage the humidity must be <90% with no condensation.
6 S452

2. Application
2. pplication
The S 452 is a flow sensor that is designed to measure the consumption
of compressed air and gases within the permissible operating
parameters. These parameters can be found in the technical data
section.
The S 452 can measure the following values:
•Velocity of the compressed air or gas.
•Volume flow of the compressed air or gas.
•Total consumption of the compressed air or gas.
The default factory settings are: Velocity in m/s, Volume flow in m3/h
and Total Consumption in m3. Other units can be programmed by the
optional display or the service kit.
The S 452 flow sensor is developed to be used in e plosive areas and is
mainly used to measure compressed air and process gases in industrial
environments.
3. Features
•Direct measurement of mass flow and standard flow without the
need of pressure and temperature compensation.
•In-line types for smaller pipes.
•No moving parts, no clogging.
•All sensor parts which come into contact with the measurement
medium are made of stainless steel 316L.
•Robust metal enclosure is suitable for outdoor applications in harsh
environments.
•Wireless Bluetooth interface for connecting on site.
•Optional display directly on the sensor, showing flow rate,
consumption, medium temperature and diagnostic result.
S452 7

4. Technical data
4. Technical data
4.1 General data
Measuring range 0.4 ... 92.7 sm/s (standard range calibration)
0.8 ... 185 sm/s (ma range calibration)
1.0 … 224 sm/s (high speed calibration)
(See Appendi A for flow measurement ranges
in different tube diameters)
* sm/s: standard meter per second
Parameters Standard unit flow: m3/h
Available units: m3/min, l/min, l/s, cfm, kg/h,
kg/min, kg/s
Standard velocity unit: m/s
Reference conditions ISO1217, 20 °C, 1000 mbar (Standard-Unit)
DIN1343, 0 °C, 1013.25 mbar (Norm-Unit)
Principle of
measurement
Thermal mass flow
Sensor Resistive sensor
Measured medium Air, gas (non corrosive gas)
Operating temperature -40 ... +100°C (medium temperature)
-40 ... +65°C (ambient temperature)
Humidity of the
measured medium
< 90%, no condensation
Operating pressure 0 ... 4.0 MPa
Housing material Al alloy
Material of the probe
tube, sensor head and
the screwing
Stainless steel 1.4404 (SUS 316L)
Protection class IP67
Dimensions See Chapter 5. Dimensional drawing.
Display (optional) Graphic display, 128 64
Tube diameter DN15 … DN80
Screwing thread M32 1.5
8 S452

4. Technical data
Weight 1.25 kg (instrument only, and the measuring
section is not included)
4.2 Electrical data
Power supply 16 ... 30 VDC, 5 W
4.3 Output-signals
Analog output See chapter 9.1
Pulse output See chapter 9.2
HART output See chapter 9.3
Modbus output See chapter 9.4
M-Bus output See chapter 9.5
4.4 ccuracy
Accuracy* ±(1.5% of reading + 0.3% full scale)
Stated accuracy at: Ambient/process temperature +23°C ±3°C
Ambient/process humidity <90%, no
condensation
Process pressure at 0.6 MPa
Repeatability 0.25% of reading
* The specified accuracy is valid only within the minimum and ma imum
flow rates that are stated in Appendi A.1.
S452 9

5. Dimensional drawing
5. Dimensional drawing
6. Determination of the installation point
In order to maintain the accuracy stated in the technical data, the
sensor must be insert in the centre 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 e ists at your site for a adequate
installation as described in this manual.
TTENTION!
Wrong measurement is possible if the sensor is not
installed correctly.
10 S452

6. Determination of the installation point
•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.
•It is strongly recommend not to install S 452 permanently in wet
environment as it e ists usually right after a compressor outlet.
7. Inlet and outlet section
The S 452 with tube diameters from DN15 to DN25 already has the
required inlet and outlet sections. No additional straight sections are
needed.
For the S 452 with diameters from DN32 to DN80, the S 452 has a
shortened inlet section and requires additional straight sections at the
inlet and outlet. The additional length for the particular diameters are
listed in the table below.
Flow obstructions
before the
measurement
section
Additional
length for
DN32
[mm]
Additional
length for
DN40
[mm]
Additional
length for
DN50
[mm]
Additional
length for
DN65
[mm]
Additional
length for
DN80
[mm]
inlet outlet inlet outlet inlet outlet inlet outlet inlet outlet
Slight curve
(bend <90°C)
175 - 227.8 9.5 362.2 65.5 551.8 144.5 760.8 204.5
Reduction (Tube
narrows towards
measurement
section)
265 - 353.5 9.5 521,5 65.5 758.5 144.5 938.5 204.5
E pansion (Tube
e pands towards
measurement
section)
265 - 353.5 9.5 521.5 65.5 758.5 144.5 938.5 204.5
90°C bend or T
piece
265 - 353.5 9.5 521.5 65.5 758.5 144.5 938.5 204.5
2 90°C bends on
one level
445 - 563 9.5 787 65.5 1103 144.5 1343 204.5
2 90°C bends 3
dimensional change
of direction
985 - 1191.5 9.5 1583.5 65.5 2136.5 144.5 2556.5 204.5
Shut-off valve 1345 - 1610.5 9.5 2114.5 65.5 2825.5 144.5 3365.5 204,5
S452 11

8. Sensor installation
8. Sensor installation
Before installing the sensor, please make sure that all components listed
below are included in your package.
Qty Description Part no.
1 Sensor S695 0452
1 Sealing ring No P/N
1 Bluetooth dongle No P/N
1 Measuring section A1301 ... A1306 (R thread)
A1321 … A1328 (Flange, EN-1092-1)
A1341 … A1348 (Flange, ANSI 16.5)
1 USB disk (with Service
Software stored)
No P/N
1 Instruction manual No P/N
1 Calibration certificate No P/N
The S 452 is shipped with mounted measurement section.
Please make sure that the sensor is installed correctly to the flow
direction in the tube. Make sure that the flow direction indicated on the
housing matches the flow direction of the compressed air or gas. The
gas flows from the inlet (long pipe section) to the outlet (short pipe
section) like illustrated in the picture below.
12 S452

8. Sensor installation
8.1 Removal of the flow sensor
The following steps e plain the procedure of an appropriate removal of
the sensor.
TTENTION!
Only remove the sensor if the system is in a
pressure-less condition.
1. Hold the sensor.
2. Release the terminal nut at the
connection thread.
3. Pull out the shaft slowly.
4. The measuring section can be closed
with the optional closing cap, so the
system can be operated normal
during maintenance.
Re-installation after maintenance:
•The re-installation of the measurement device is simple as the
sensor unit fits into the pipe section only in one position.
•Please make sure that the O-ring is inserted.
•Close the terminal nut tightly to mount the sensor correctly.
S452 13

8. Sensor installation
8.2 Electrical connection
When installing the cables please consider following points:
•Keep the stripped and twisted length of cable shield as short as
possible.
•Screen and ground the signal lines.
•Unused cable entries must be closed with closers.
•Cable outer diameter should be between 6 and 8 mm.
•Single wire cross section area should be between 0.25 ... 0.75
mm2.
•The thread size for the cable glands is M20 / 1.5.
Connection diagram
14 S452

8. Sensor installation
Pin Pulse and analog Modbus M-Bus H RT
1 GNDSDI GNDSDI GNDSDI GNDSDI
2 +VB+VB+VB+VB
3 -VB-VB-VB-VB
4 SDI SDI SDI SDI
5 D1 D1 D1 D1
6 D2 D2 D2 D2
7 P1 P1 P1
8 P2 P2 P2
9 -I1-I1-I1-I1 / -HART
10 +I1+I1+I1+I1 / +HART
11 -I2+D M1
12 +I2-D M2
13 GNDM
14 Earth Earth Earth Earth
15 Earth Earth Earth Earth
16 Earth Earth Earth Earth
Legend to pin assignment
SDI = Digital signal (internal use) P1 = Pulse output 1
GNDSDI = Ground for SDI P2 = Pulse output 2
+VB= Positive supply voltage D1 = Direction input D1 (flow
switch)
-VB= Negative supply voltage D2 = Direction input D2 (flow
switch)
+l1= Positive signal output
(analog 1)
+D = Modbus data+
-I1= Negative signal output
(analog 1)
-D = Modbus data -
+l2= Positive signal output
(analog 2)
M1 = M-Bus 1
-I2= Negative signal output
(analog 2)
M2 = M-Bus 2
S452 15

. Signal outputs
9. Signal outputs
9.1 nalog output
The S 452 in the standard configuration comes with 2 analog outputs
and 1 pulse output. All signals are electrically isolated. The analog
output can be used as an active output (current is sourced through the
positive connection pin) or passive output. In the passive configuration
a current signal is modulated into the e ternal signal voltage.
Active : 4 to 20mA, RL < 400 Ω
Passive : 4 to 20mA, supply voltage 18... 30 VDC, RL < 500 Ω
For HART : RL ≥ 250 Ω
Uncertainly : < 0.3 % of reading
Resolution : 0.005 mA
9.2 Pulse output
No switch, no polarity required, galv. Isolate
Ma . rating : 30 VDC, 200 mA
Pulse width : 10 ... 100 msec (depending on flow rate)
The ma imum number of pulse per second is limited to 45 pulse per
second. As a result depending on the flow rate and the selected
consumption unit the ma imum flow rate is limited to the values in the
table below.
Unit Max flow
Pulse /
consumption unit
1/1 1/10 1/100
m3/h 162,000 1620000 16,200,000
m3/min 2,700 27,000 270,000
l/min 2,700 27,000 270,000
cfm 2,700 27,000 270,000
Kg/h 162,000 1,620,000 16,200,000
Kg/min 2,700 27,000 270,000
Kg/s 45 450 4,500
Default To be configured by service
software
16 S452

. Signal outputs
9.3 H RT output
The HART signal is modulated on analog output 1. In case S 452 is used
in a multi-drop configuration (more than 1 slave on the 4-20 mA line)
the analog output cannot be used.
Device type :Slave
Polling address :1 to 15
Bus address can be set through software
Physical interface :BELL 202
Protocol version :V 5.2
Tag :S 452
Tag description :Flow meter
Frame/parity/Stop :8, O, 1
9.4 Modbus output
The version with Modbus comes with one analog output and one pulse
output. The Modbus communication requires to activate terminal
resistors at the last device on the bus system. If the S 452 is the last
device on the bus system, the DIP switches on the connector board
should be set to “ON” position.
Termination resistor
network switch
Device type : Slave
Address rage : 1 to 251
Bus address can be set through software
Physical
interface
: RS485 in accordance with EIA/TIA-485 standard
Baudrates : 1200, 2400, 4800, 9600, 19200, 38400, 57600,
115200 Baud
Transm. mode : ASCll, RTU
Response time : Direct data access = 0 to 255 ms (can be configured)
Remarks
•Modbus communication settings can be changed by the service
software.
S452 17

. Signal outputs
Index Channel description Unit Resolution Format Length Modbus
address
0 Velocity m/s 0.1 FLOAT 4-Byte 0
1 Flow m3/h 0.1 FLOAT 4-Byte 6
2 Consumption m31 UNIT32 4-Byte 12
3 Reverse
consumption
m31 UNIT32 4-Byte 18
4 Medium temperature °C0.1 FLOAT 4-Byte 24
5 Ambient
temperature
°C0.1 FLOAT 4-Byte 36
Remarks
•All numbers are in the little-endian format.
•Function code: 03.
•Different units have different precisions.
9.5 M-Bus output
The version with M-Bus comes with one analog output and one pulse
output.
Device type : Slave
Address rage : 1 to 251
Bus address can be set through software
Physical interface : Meter-Bus, EN1434-3
Baudrates : 300, 2400, 9600 Baud
Frame/parity/Stop : 8, E, 1
18 S452

10. Configuration
10. Configuration
To fully utilize the functionality of S 452, you must make configurations
in the flow meter accordingly.
The following table gives an overview about the available settings.
rea vailable settings Default
Measurement Tube diameter
Flow unit
Consumption unit
According to the
ordered section
m3/h
m3
Reference conditions Ps= 1000 hPa;
Ts= 20°C
Gas type selection
Consumption counter
Operation pressure
Flow direction
Air
0 m3
0.6 MPa
Standard
Analogue output 1 Measurement channel
Scaling
Active / passive
Flow
4 mA: 0 m3/h
20 mA: ma flow
Active
Analogue output 2 Measurement channel
Scaling
Active / passive
Medium Temperature
4 mA: -50°C
20 mA: 200°C
Active
Pulse output Pulse / Alarm
Pulses per consumption unit
Pulse
1
HART Fieldbus address
Manufacturer ID
Device type code
0
255
0
Modbus Device address
Baudrate
Framing/parity/Stop bit
Transmission mode
1
19200
8, N, 1
RTU
M-Bus Address
Manufacturer code
Baudrate
Access number
0
END
300
0
S452 19

10. Configuration
To configure S 452 settings, use the service software stored in the USB
disk that comes with the delivery package.
1. Install the service software on a Windows® PC.
2. Make sure that the PC can communicate with the sensor through
one of the following ways:
•Bluetooth way—Make sure the PC has a Bluetooth interface. If
the PC does not have, insert the USB dongle that comes with
the sensor.
•Cable way—Use an optional service kit to connect the PC with
the sensor.
3. Power up the S 452.
4. Follow the onscreen instructions in the service software to make
configurations. You can also refer to the online help file for more
information.
Notes:
For the Bluetooth connection:
•Ensure that the distance between S 452 and PC is not more than
5 meters.
•Ensure that the PC Bluetooth antenna points roughly towards the
direction of the display (front part).
20 S452