SUTO S220 OEM Manuel
English
Instruction and Operation Manual
S220 OEM
Dew Point Transmitter
with UNF5 8” connection
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.
S TO offers no guarantee for the suitability for any other purpose.
S TO is also not liable for consequential damage resulting from the
delivery, capability or use of this device.
2 S220 OEM
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 .............................................................................9
6 Dimensional Drawing.................................................................10
7 Installation ..............................................................................12
7.1 Installation Requirements.....................................................13
7.2 Installation Procedure .........................................................14
7.2.1 Install without Measuring Chamber..................................14
7.2.2 Install with Measuring Chamber.......................................15
7.2.3 Install with By-pass Measuring Chamber...........................16
7.3 Remove the Dew Point Transmitter........................................17
7.4 Electrical Connection ...........................................................18
7.5 Connection between S220 and Customer Equipment................19
8 Display (Option)........................................................................20
8.1 Display Information.............................................................20
8.2 Displayed Values.................................................................20
8.3 Display Rotation..................................................................20
9 Signal Outputs..........................................................................21
9.1 Analog Output ....................................................................21
9.2 Modbus/RT Output ............................................................21
9.2.1 Modbus/RT Informtion .................................................21
9.2.2 Holding Register Table for Modbus/RT ............................23
10 Optional Accessories................................................................26
10.1 Measuring Chamber...........................................................26
10.2 Service Kit........................................................................26
11 Calibration..............................................................................27
12 Maintenance...........................................................................27
13 Disposal or Waste....................................................................27
S220 OEM 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 or qualified
personnel.
This instruction manual must be available at the operation site of the
Dew Point 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 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.
4 S220 OEM
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 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.
S220 OEM 5
1 Safety Instructions
Storage and transportation
•Make sure that the transportation temperature of the device is
between -30 ... +70°C.
•For transportation it is recommended to use the packaging which
comes with the device.
•Please make sure that the storage temperature of the device is
between -20 ... +50°C.
•Avoid direct V and solar radiation during storage.
•For the storage the humidity must be <95% rH, no condensation.
2 Registered Trademarks
S TO®
Registered trademark of S TO iTEC
MODB S®
Registered trademark of the Modbus Organization, Hopkinton, SA
6 S220 OEM
3 Application
3 Application
The S220 OEM Dew Point Transmitter is an industrial instrument
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) or the S4C-DP mobile App.
The S220 OEM Dew Point Transmitter is mainly used in compressed air
systems in the industrial environment, and not developed to be used in
explosive areas. To use it in explosive areas, please contact the
manufacturer.
4 Features
•The Dew Point Transmitter S220 is applicable for measuring 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 or 4 ... 20 mA 3-
wire + Modbus RT .
•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.
S220 OEM 7
5 Technical Data
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 Dew point
Relative Humidity
Temperature
Pressure (option)
: -100 ... +20°C Td
: 0 ... 90% rH
: -30 ... +70°C
: 0 ... 1.6 MPa
Sensor Dew point sensor: QCM + Polymer
Temperature sensor: Pt100
Pressure sensor: Piezo resistive type
Measuring medium Air, Argon, O2, N2, CO2
Response time (T90)
@4 l/min 0 °C Td → -80 °C Td ≤ 420 sec
-80 °C Td → 0 °C Td ≤ 90 sec
Ambient temperature 0 ... +50°C
Ambient humidity 0 ... 95% rH
Operating pressure -0.1 ... 1.6 MPa
Casing material Casing: Aluminium alloy
Process thread: Stainless steel 1.4301
(S S 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 10
Screwing thread NF5/8” thread
Weight 180 g
8 S220 OEM
5 Technical Data
* 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 + Modbus/RT : 40 mA @ 24 VDC
5.3 Output Signals
Analog output 4 ... 20 mA 2-wire
Analog output scaling 4 mA
20 mA
= -100°C Td
= +20°C Td
Modbus output Modbus/RT
Modbus communication Mode: RT
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°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
S220 OEM 9
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2
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