Air TEc SUTO S211 Manual

English
Instruction and Operation Manual
S211/S215/S220
Dew Point Transmitter

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S211/S215/S220
Dear Customer,
Thank you for choosing our product.
The operating instructions must be read in full and carefully observed
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 exempt from liability.
The device is destined exclusively 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.

S211/S215/S220
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Table of contents
1 Safety Instructions..................................................................................................... 4
2 Registered Trademarks ............................................................................................ 6
3 Application ..................................................................................................................... 7
4 Features.......................................................................................................................... 7
5 Technical Data.............................................................................................................. 8
5.1 General ...................................................................................................................8
5.2 Electrical Data...................................................................................................... 9
5.3 Output Signals ..................................................................................................... 9
5.4 Accuracy...............................................................................................................10
6 Dimensional Drawing ..............................................................................................11
7 Determination of the Installation Point............................................................13
8 Installation...................................................................................................................14
8.1 Installation Requirements.............................................................................14
8.2 Installation Procedure.....................................................................................15
8.3 Electrical Connection.......................................................................................19
8.4 Connection between S211/S215/S220 and Customer Equipment
................................................................................................20
9 Signal Outputs ...........................................................................................................22
9.1 Analog Output....................................................................................................22
9.1.1 Scaling..........................................................................................................22
9.2 Modbus/RTU Interface....................................................................................22
9.2.1 Holding Register Table for Modbus/RTU .........................................23
9.2.2 Connect Modbus/RTU Devices to a Master ....................................26
10 Optional Accessories .............................................................................................30
10.1 Measuring Chambers....................................................................................30
10.2 Service Kit.........................................................................................................30
11 Calibration.................................................................................................................30
12 Maintenance .............................................................................................................31
13 Disposal or Waste ..................................................................................................31

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S211/S215/S220
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 or qualified
personnel.
This instruction manual must be available at the operation site of the
Dew Point Transmitter 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 exceed the maximum permitted pressure range (see
sensors label).
• Only use pressure tight installation material.
• Avoid that persons get hit escaping air or bursting parts of the
instrument.
• The system must be pressure-less during maintenance work.
WARNING!
Voltage used for supply!
Any 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.

S211/S215/S220
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1 S
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.
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 results.

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S211/S215/S220
Storage and transportation
• Make sure that the transportation temperature of the instrument is
between -30 ... +70°C.
• For transportation it is recommended to use the packaging which
comes with the instrument.
• Please make sure that the storage temperature of the instrument
is between -20 ... +50°C.
• Avoid direct UV and solar radiation during storage.
• For the storage the humidity must be <95% rH, no condensation.
2 Registered Trademarks
SUTO®
Registered trademark of SUTO iTEC
MODBUS®
Registered trademark of the Modbus Organization, Hopkinton, USA
HART®
Registered trademark of the HART Communication Foundation, Austin,
USA

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3 Application
The S211 / S215 / S220 are three industrial Dew Point Transmitters
designed for measuring dew point and related parameters in
compressed air or industrial gases under specified operating conditions
(See next page ).
Parameter Default unit
Temperature °C
Humidity % rH
Dew point °C Td
Pressure (optional) bar(g)
Remark: You can change the units using the service kit
(optional) and the S4C-DP software.
The S211 / S215 / S220 Dew Point Transmitters are mainly used in
compressed air systems in the industrial environment, and not
developed to be used in explosive areas. To use them in explosive
areas, contact the manufacturer.
4 Features
• Three Dew Point Transmitter models applicable for different
measuring ranges:
• S211 measures down to -60°C Td
• S215 measures down to -20°C Td
• S220 measures down to -100°C Td
• Optional display for on-site values. The display can be rotated
340° horizontally to ease your access to readings.
• Various signal output options: 4 ... 20 mA 2-wire, 4 ... 20 mA 3-
wire, or 4 ... 20 mA 3-wire + Modbus/RTU.
• Optional integrated pressure sensor.
• IP65 casing provides robust protection in rough industrial
environment.
• Very fast response time ensures safe and reliable indication
whenever dew points are out of valid ranges.
• High accuracy of ± 2°C Td dew point.

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S211/S215/S220
5 Technical Data
5.1 General
Parameters
Standard unit dew point: °C Td
Standard unit temperature: °C
other units: °F, K
Standard unit humidity: % rH
Standard unit pressure: bar (g)
Principle of measurement
Capacitive method and frequency method
Measuring range
Type
Range
S215
Dew point : -20 ... +50°C Td
Relative Humidity : 0 ... 90 % rH
Temperature : -30 ... +70°C
Pressure (option) : 0 ... 1.6 MPa
S211
Dew point : -60 ... +20°C Td
Relative Humidity : 0 ... 90 % rH
Temperature : -30 ... +70°C
Pressure (option) : 0 ... 1.6 MPa
S220
Dew point : -100 ... +20°C Td
Relative Humidity : 0 ... 90 % rH
Temperature : -30 ... +70°C
Pressure (option) : 0 ... 1.6 MPa
Sensor
S215 / S211: Polymer
S220: QCM + Polymer
Temperature sensor: Pt100
Pressure sensor: Piezo resistive type
Measuring medium
Air, Argon, O2, N2, CO2*
Response time (T90)
@4 l/min
S215
0 °C Td →-20 °C Td ≤50 sec
-20 °C Td →0 °C Td) ≤35 sec
S211
0 °C Td →-60 °C Td ≤ 280 sec
-60 °C Td →0 °C Td ≤65 sec
S220
0 °C Td →-80 °C Td ≤ 420 sec
-80 °C Td →0 °C Td ≤90 sec

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Ambient temperature
0 ... +50°C
Ambient humidity
0 ... 95% rH
Operating pressure
-0.1 ... 1.6 MPa
-0.1 ... 35.0 MPa optional for S215 / S211
Casing material
Casing: Aluminium alloy
Process thread: Stainless steel 1.4301 (SUS
304)
Display cover: PC + ABS
Protection class
IP65
Display (optional)
0.66” OLED display for displaying the
measured value and unit
340° horizontally rotatable**
Dimensions
See dimensional drawing on the page 11
Screwing thread
G ½” thread (ISO 228/1)
Weight
180 g
* For CO2, the measurement range of S211 is limited to -40°C Td
** The rotation force cannot exceed 3.0 N.m
5.2 Electrical Data
Power supply
15 ... 30 VDC
Current consumption
2-wire: 4 ... 20 mA
3-wire: 40 mA @ 24 VDC
3-wire with display: 50 mA @ 24 VDC
5.3 Output Signals
Analog output
4 ... 20
mA 3-wire or 4 ... 20 mA
2-wire
Analog output scaling
Type
Scaling
S211
4 mA
=
-60°C Td
20 mA
=
+20°C Td
S215
4 mA
=
-20°C Td
20 mA
=
+50°C Td
S220
4 mA
=
-100°C Td
20 mA
=
+20°C Td
Modbus output
Modbus/RTU

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S211/S215/S220
Modbus communication
Mode: RTU
Baud rate: 19200
Device address: last 2 digits of serial number
Framing / parity / stop bit: 8 / N / 1
Response time: 1 second
Response delay: 0 ms
Interframe spacing: 7 char
5.4 Accuracy
Accuracy
Dew point:
± 1 °C Td (0 ... 20°C Td)
± 2 °C Td (-70 ... 0 / +20 ... +50 °C Td)
± 3 °C Td (-100 ... -70 °C Td)
Temperature: ± 0.3°C
Pressure: 0.5% FS
Repeatability of dew point
±0.5 °C
Stated accuracy at
Ambient/process temperature 23 °C ± 3 °C
Ambient/process humidity <95% rH, no
condensation
Airflow > 2 l/min at sensor tip
Flow rate
In order to reach a fast response time please
ensure a flow rate of 2... 5 l/min at the
sensor tip.
Note:
If the Measuring chamber A699 3491 is used,
this flow rate will be maintained by the
chamber at a pressure > 0.3 MPa.