SUTO S201 Manual

English
Instruction and operation manual
S201
Dew point sensor

Dear Customer,
Thank you for choosing our product.
The operating instructions must be read in full and carefully observed
before you start up the device. The manufacturer cannot be held liable
for any damage that 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 that 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 S201

Safety instructions
Table of contents
1 Safety instructions......................................................................4
2 Registered trademarks.................................................................6
3 Application.................................................................................6
4 Features....................................................................................7
5 Technical data.............................................................................8
5.1 General................................................................................8
5.2 Electrical data.......................................................................8
5.3 Output-signals......................................................................8
6 Dimensional drawing..................................................................10
7 Determination of the installation point.........................................11
8 Installation ..............................................................................11
8.1 Installation requirements......................................................11
8.2 Installation procedure .........................................................12
8.3 Electrical connection ...........................................................13
9 Signal outputs..........................................................................15
9.1 Analog output ....................................................................15
9.2 Relay output ......................................................................15
10 Sensor display ........................................................................15
10.1 Starting process................................................................16
10.2 Error messages.................................................................16
10.3 Configuration using the display............................................17
11 Optional extra accessories........................................................18
11.1 Measuring chambers .........................................................18
11.2 Service kit........................................................................18
12 Calibration..............................................................................19
13 Maintenance...........................................................................19
14 Disposal or waste....................................................................19
15 Warranty................................................................................20
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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
dew point 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 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 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.
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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 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.
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.
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 V and solar radiation during storage.
•For the storage the humidity must be <95% rH, no condensation.
S201 5

Registered trademarks
2 Registered trademarks
S TO®
Registered trademark of S TO iTEC
MODB S®
Registered trademark of the Modbus Organization, Hopkinton, SA
HART®
Registered trademark of the HART Communication Foundation, Austin,
SA
PROFIB S®
Registered trademark of the PROFIB S ser Organization, Karlsruhe,
Germany
3 pplication
The S201 is a dew point sensor which is designed to monitor the dew
point in industrial application within the permissible operating
parameters. These parameters can be found in the technical data
section.
The S201 can measure the following values:
•Temperature of the compressed air or gas.
•Humidity of the compressed air or gas.
•Dew point of the compressed air or gas.
The default factory settings are: temperature in °C, Humidity in % rH
and dew point in °C Td. Other units can be programmed by the optional
display or the service kit.
The S201 dew point sensor is not developed to be used in explosive
areas. For the use in explosive areas please contact the manufacturer.
The S201 dew point sensor is mainly used in compressed air systems in
industrial environment.
6 S201

Features
4 Features
•Dew point sensor for low dew point applications down to -60°C Td.
•Long term stability.
•Graphic display.
•Relay output.
•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.
•Can be installed directly into dryers through G ½” thread.
•High accuracy of ± 2°C Td dew point.
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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
Principle of measurement Capacitive method
Sensor Polymer
Measuring medium Non-corrosive gases
Measuring range Dew point: -60 ... +20°C Td
Relative humidity: 0 ... 90% rH
Temperature: -30 ... +70°C
Ambient temperature -20 ... +50°C
Ambient humidity: 0 ... 100% rH
Operating pressure -0.1 ... 5.0 MPa
Housing material PC + ABS
Material of the sensor
head and the screwing
Stainless steel sinter filter pore size < 30 µm
Protection class IP65
Dimensions See dimensional drawing on the page 10
Display 128 x 64 pixel, with backlight
Screwing thread G ½” thread (ISO 228/1);
NF 5/8” thread (on request)
Weight 226 g
5.2 Electrical data
Power supply 12 ... 30 VDC / 100 mA
5.3 Output-signals
Analog output Signal: 4 ... 20 mA, 3 wire
Analog output scaling 4 mA = -60°C Td
8 S201

Technical data
20 mA = +20°C Td
Relay output NO, 32 VDC, 500 mA
Accuracy:
Valid working range:
S201 9

Dimensional drawing
6 Dimensional drawing
10 S201

Determination of the installation point
7 Determination of the installation point
In order to maintain the accuracy stated in the technical data, the
sensor must be installed correctly. The air must flow on to the sensor
tip, otherwise it will lead to wrong measurement values. For further
instructions, please read the next chapter carefully.
Please consider that enough space exists at your site for a adequate
installation as described in this manual.
TTENTION!
Wrong measurement is possible, if the sensor is not
installed correctly.
•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 S201 permanently in wet
environment as it exists usually right after a compressor outlet.
8 Installation
Before installing the sensor, please make sure that all components listed
below are included in your package.
Qty Description Item No.
1 Sensor S699 0406
2 M12 plug C219 0059
1 Instruction manual No P/N
1 Calibration certificate No P/N
8.1 Installation requirements
The flowing air or gas must pass the sensor tip for a proper
measurement. This can be realized with a measurement chamber. For a
installation without measuring chamber you need to concern the
installation depth which is described in the next chapter.
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Installation
8.2 Installation procedure
The following steps explain the procedure of an appropriate installation.
Installation of the sensor with measurement chamber
1. Connect the sensor with
the measurement
chamber.
2. Connect the sensor and
the measurement
chamber with the fast
connector.
Installation of the sensor without measurement chamber
•Install the sensor only if
the system is
pressureless.
•Not less than 1/3 of the
sensor tip should be
inside of the pipe. For this
please check the size of
the nozzle.
•The inner thread must be
G 1/2”.
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Installation
Remarks
Please install the sensor only
in the recommended area
like you can see in the
picture. A upside down
installation is not permitted.
Please consider that the
distance to the vertical level
must be >30°.
Removal of the sensor
To remove the sensor unscrew the sensor from the measurement
chamber or from the nozzle. Please observe that the system is
pressureless when the sensor is removed.
8.3 Electrical connection
The dew point sensor is equipped with tow Connector plugs “A” and “B”.
The cables are connected to the sensor through the M12 connector.
Connector plug A
Connector plug B
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Installation
Connection pins connector plug M12
Connection pins
(view from the clamping side)
Pin assignment connector plug M12
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5
Connector plug A SDI -VB+VB+l N/A
Connector plug B SEL N/A N/A NO1 NO2
Wire colour brown white blue black grey
Legend to pin assignment
SDI Digital signal (internal use)
-VBNegative supply voltage
+VBPositive supply voltage
+l Positive 4 ... 20 mA signal
N/A Not available
NO1 Relay output
NO2 Relay output
SEL Internal signal
TTENTION!
Do not screw the M12 plug using force. Otherwise, it
may damage the connecting pins.
14 S201

Signal outputs
9 Signal outputs
9.1 nalog output
The sensor has an analog output range of 4 ... 20 mA. It is a 3-wire
active analog output. This output is scaled to:
•4 mA = -60°C Td
•20 mA = +20°C Td
For other ranges, please contact the manufacturer. The analog output
can be allocated to the temperature, the dew point and the humidity.
9.2 Relay output
The S201 has an relay alarm output. It is possible to monitor e.g. the
dew point value and gives an alarm at a particular threshold value.
larm relay specifications:
Rating: 32 VDC / 500 mA
Please find the different states in the table below.
Situation Relay state
S201 is powered off OPEN
S201 is powered on / no alarm value is
reached
CLOSED
S201 is powered on / alarm value is reached OPEN
The advantage of the normally open relay is, that both critical situations
can be detected, not only if the alarm value is reached, also if the
device has an power loss.
10 Sensor display
With the Sensor display it is possible to show the temperature, humidity
and the dew point. Moreover it shows error messages and enables you
to change the configuration setting of the sensor.
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Sensor display
“Enter key” =
“p key” =
By pressing the Enter key the current
alarm threshold value can be shown and
it will go back to online value
automatically in 3 seconds.
10.1 Starting process
After power up, the display starts automatically with an initialisation
procedure. During the next eight seconds, the display will show the
current software version and starts the connection to the sensor. Now
the display enters the standard mode, showing the temperature,
humidity and the dew point, alternately.
10.2 Error messages
For this case please contact a technician
of the manufacturer.
As soon as the communication fails, the
instrument will show this message.
Please restart the power supply in most
of the cases this will fix the problem. If
the problems still exists please contact a
technician of the manufacturer.
If the sensor and the display settings
are not matching, the instrument will
show this message. Please contact a
technician of the manufacturer.
16 S201
Alarm:
25.2°C Td
Error:
Auto transmission!
Error:
Communication fail!
Error:
Sensor unmatch!

Sensor display
10.3 Configuration using the display
The S201 is usually configured ex factory according to the ordered
customer settings.
In case of settings must be changed, please observe the following
steps.
1. At first keep the Enter key ( )
pressed for three seconds. Then the
S201 will ask to enter the unlock key.
After 3 seconds
2. Enter the unlock code “12”. The
selected digit will be flashing. To modify
the digit press up key ( ∆ ), press the
Enter key ( ) to confirm, and shift to
the next digit or go to the next page.
3. Set alarm. The selected digit will be
flashing. To modify the digit, press the
p key ( ∆ ). Press the Enter key ( ) to
confirm, and shift to the next digit or go
to the next page.
5. Adjust to display the temperature.
Press the p key ( ∆ ) to select “Yes” or
“No”. Press the Enter key ( ) to
confirm and go to the next page.
6. Adjust to display the humidity. Press
the p key ( ∆ ) to select “Yes” or “No”.
Press the Enter key ( ) to confirm and
go to the next page.
8. Adjust to display the dew point. Press
the p key ( ∆ ) to select “Yes” or “No”.
Press the Enter key ( ) to confirm and
go to the next page.
9. Adjust the display contrast.
Press the p key ( ∆ ) to change the
contrast. Press the Enter key ( ) to
confirm and go to the next page.
S201 17
Online value
Wrong
unlock
code!
Enter
Unlock code:12
00
Alarm:
25.2°C Td
Display temperature?
Yes (No)
Display humidity?
Yes (No)
Display dew point?
Yes (No)
Display contrast
Up Change
Enter Okay

Sensor display
10. Set the display orientation.
Press the p key ( ∆ ) to select “Yes” for
upside down or “No” for normal view.
Press the Enter key
( ) to confirm. The settings will be
saved automatically.
11. Online measurement value will be
shown in three seconds automatically.
Notes:
•To abort the entry process keep the enter key pressed for three
seconds.
•Online value will be shown automatically if there is no key pressed
for more than 20 seconds.
11 Optional extra accessories
11.1 Measuring chambers
There are different types of measuring chambers for example Measuring
chamber with fast connector, by-pass-by chamber with in and out
connection, measuring chamber for dryer installation or high pressure
chamber. For more information please contact your retailer or the
manufacturer.
11.2 Service kit
The service kit is used to connect the sensor with the PC. Sensor
parameters such as analog output scaling, alarm values, units etc. can
be easily changed by using the service kit.
The diagram below shows the connection when using the optional
service kit. Please ensure that also in this case the power supply of
either S201 or of the service kit is connected because the SB port is
not supplying enough power.
18 S201
Upside Down?
Yes (No)
System reset

Optional extra accessories
12 Calibration
The sensor is calibrated ex work. The exact calibration date is printed
on the certificate which is supplied together with the sensor. The
accuracy of the sensor is regulated by the on site conditions,
parameters like oil, high humidity or other impurities can affect the
calibration and furthermore the accuracy. However we recommend to
calibrate the instrument at least once per year. The calibration is
excluded from the instruments warranty. For the calibration service,
please contact the manufacturer.
13 Maintenance
Please observe from time to time the sinter cap. If it appears to be
dirty, it is recommended to replace it. For the replacement service,
please contact the manufacturer.
TTENTION!
dirty/wet/contaminated sinter cap or sensor tip
may lead to a longer response time and to wrong
measurements.
14 Disposal or waste
Electronic devices are recyclable material and do not
belong in the household waste.
The sensor, the accessories and its packings must be
disposed according to your local statutory requirements.
The dispose can also be carried by the manufacturer of the
product, for this please contact the manufacturer.
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Warranty
15 Warranty
S TO provides a warranty for this product of 24 months covering the
material and workmanship under the stated operating conditions from
the date of delivery. Please report any findings immediately and within
the warranty time. If faults occur during the warranty time, S TO will
repair or replace the defective unit, without charge for labour and
material costs but there is a charge for other service such as transport
and packing costs.
Excluded from this warranty is:
•Damage caused by:
◦Improper use and non-adherence to the instruction manual.
◦se of unsuitable accessories.
◦External influences (e.g. damage caused by vibration, damage
during transportation, excess heat or moisture).
The warranty is cancelled:
•If a user opens the measurement instrument without a direct
request written in this instruction manual.
•If repairs or modifications are undertaken by third parties or
unauthorised persons.
•If the serial number has been changed, damaged or removed.
Other claims, especially those for damage occurring outside the
instrument are not included unless responsibility is legally binding.
Warranty repairs do not extend the period of warranty.
TTENTION!
Batteries have a reduced warranty time of 12
months.
20 S201