UNISENSE SULFILOGGER User manual

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SulfiLogger_Manual_EN_203.pdf
SulfiLogger™ User Manual
COPYRIGHT © 2019 - UNISENSE A/S
VALID FOR SERIAL NUMBERS FROM S/N: 1004000
REV. 2019-11-19

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TABLE OF CONTENTS
Warranty and support 1
Warranty .................................................... 1
Recyclingprogram ............................................... 1
Support ..................................................... 1
General information 2
Safety ...................................................... 2
Sensorhandling................................................. 2
Overview 3
Maintenance 4
Cleaning..................................................... 4
Calibration.................................................... 4
Operating principles 5
Electrochemical measurements of hydrogen sulfide ........................... 5
Measuring in different media - unit conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Specifications 6
SulfiLogger™sensors.............................................. 6
Technical specifications ............................................ 6
Mechanical specifications........................................... 6
Chemical interferences specifications.................................... 6
Best practices 7
Wastewaterinstallations ........................................... 7
Troubleshooting 8
Appendix 10
Appendix:Installationguide ......................................... 10
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WARRANTY AND SUPPORT
This product is designed for industrial use. Not for use in human diagnostic or therapeutic procedures. This
product must be handled with care and only by trained personnel. Unisense A/S recommends users to read
the documentation very carefully.
WARRANTY
The SulfiLogger™ is covered by a limited warranty according to the product datasheet.
The warranty does not include repair or replacement necessitated by accident, neglect, misuse, unautho-
rized repair, or modification of the product. In no event will Unisense A/S be liable for any direct, indirect,
consequential or incidental damages, including lost profits, or for any claim by any third party, arising out
of the use, the results of use, or the inability to use this product. Unisense A/S assumes no liability for
damages on instruments designed for indoor use due to unintended field use or exposure to dust, humidity
or corrosive environments.
RECYCLING PROGRAM
Unisense A/S is committed to help our customers to recycle responsibly. More than 80 % of the product can
be reused, so we ask you to request a pick-up label by writing to sulfilogger unisense.com.
SUPPORT
If you wish to order additional products or if you encounter any problems and need scientific/technical
assistance, please do not hesitate to contact our sales and support team. We will respond to your inquiry
within one working day.
E-mail: sulfilogger unisense.com
Unisense A/S
Tueager 1
DK-8200 Aarhus N, Denmark
Tel: [phone]
Fax: [phone]
Further documentation and support is available at the SulfiLogger™ website.
www.sulfilogger.com
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GENERAL INFORMATION
Thank you for choosing the Unisense SulfiLogger ™ sensor - the only H
2
S sensor on the market enabling
direct measurement of hydrogen sulfide concentrations in either liquid or gas phase, easy plug’n’play
installation in harsh environments such as sewer networks, and easy maintenance.
SAFETY
Please read this manual carefully before unpacking, installing or operating this equipment. Failure to do so
may result in serious injury to operators or other persons, or damage to equipment. Do not use or install
the SulfiLogger ™ sensor and auxiliary equipment in any other way than specified in this manual. Special
attention must be paid to all danger and caution statements. Do not use the SulfiLogger ™ sensor outside
the specified electrical, mechanical and thermal parameters as specified. During the installation, please
wear personal protective equipment (PPE) according to the safety regulation of the installation site.
* For SulfiLogger™ X1 series sensors only (EX):
•Pay close attention to other EX equipment used in conjunction with the SulfiLogger™ sensor.
•Observe the specifications in the certificate as well as national and local regulations.
•Ensure that all personnel are suitably qualified.
•Always use approved EX barriers for installation.
Chemical and gas handling safety
Operators handling the SulfiLogger ™ sensor in potentially dangerous environments should be trained in the
environmental safety and need of PPE for the given application.
DANGER
Hydrogen sulfide is a highly toxic gas and special precautions are needed to avoid the risk of injury
or death. Users of this product are advised to familiarize themselves with safety procedures, use of
personal protective equipment (PPE) and the correct use of gases and/or chemicals, and to carefully
read all relevant Safety Data Sheets.
SENSOR HANDLING
Pay special attention to always orient the SulfiLogger ™ sensor with the sensor head facing downwards,
including when handling, transporting, installing, storing and calibrating the sensor.
!CAUTION
Orienting the SulfiLogger™ sensor with the sensor head pointing upwards may damage the sensor.
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OVERVIEW
The SulfiLogger ™ sensor is available in a number of different configurations. Some of these are available in
ATEX certified versions. Pay close attention to your product type during the reading of this manual and the
installation of the sensor. ATEX certified versions of the sensor are labeled SulfiLogger ™ X1 and standard
versions of the sensor are labeled SulfiLogger ™ S1. If your product is an ATEX certified product (X1 series
sensors) it is very important that you carefully follow the instructions related to ATEX specific installation
requirements. Guidance for installation of the SulfiLogger ™ sensor can be found in Appendix A. This guide
is relevant for sensors with serial numbers starting from S/N: 1004000. For older sensors please find the
relevant guide on the SulfiLogger™ website at www.sulfilogger.com or contact Unisense.
3

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MAINTENANCE
CLEANING
SulfiLogger ™ sensors installed in wastewater environments may require regular cleaning depending on the
fouling conditions. To clean the sensor, remove any accumulated rags and gently wipe the sensor head with
a cloth. Use water or a mild soap if needed. For more information, please see page 7.
CALIBRATION
The SulfiLogger ™ sensor is factory calibrated and is as such ready to use right out of the box. It is recom-
mended to calibrate the sensor before installation and then subsequently once every month to maintain
accuracy. The calibration should be performed at your measurement location and takes approx. 5 - 10
minutes. To calibrate the sensor you must use a SulfiLogger ™ calibration kit consisting of a calibration gas
bottle, a flow regulator and a calibration cap. During calibration, you should avoid orienting the sensor with
the sensor tip pointing upwards. If the sensor is installed using a flow cell, please detach the sensor from the
flow cell before starting the calibration. If needed replace the O-ring on the sensor before re-installation.
1 2 3
4 5 6
SUCCESS
FAILURE
6
1000 ppm
Cal. gas: 1000 ppm
Retry or contact support
WAIT...
RED/GREEN
GREEN
RED
FULLY
OPEN
min.
5 bar
CLOSE
1. Verify that the pressure gauge on the flow regulator reads at least 5 bar. Make sure that the range
and concentration on the calibration gas bottle and on the sensor is the same.
2. Attach the calibration cap to the sensor head and make sure to align the arrow on the calibration cap
with the position of the sensor’s indicator light. The sensor has successfully entered its calibration
mode when the indicator light switches to a pattern of alternating red and green flashes.
3. Fully open the regulator valve and wait for the calibration to complete.
4. When the calibration has completed, the indicator light will change to a pattern of continuous green
flashes if the calibration has succeeded or continuous red flashes if it has failed. In either case, close
the regulator valve (5) and remove the calibration cap from the sensor (6).
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OPERATING PRINCIPLES
ELECTROCHEMICAL MEASUREMENTS OF HYDROGEN SULFIDE
The SulfiLogger ™ sensor contains multiple individual sensing elements which are all based on Unisense core
microsensor technology. For further information on the technology, visit: www.sulfilogger.com.
The electrochemical microsensors in the SulfiLogger ™ sensor measures dissolved H
2
S, which is one of the
three forms of dissolved sulfide in equilibrium in the water phase; H
2
S, HS
-
, and S
2-
. For all practical purposes
in sewer applications, only the first two of these are of interest. The pKa value for deprotonation of H
2
S is
around pH=7, which is approximately the same as typical domestic wastewater. For this reason, wastewater
will typically contain both H
2
S and HS− , and a separate measurement of the pH-value of the wastewater is
necessary to calculate the total amount of dissolved sulfides in the wastewater. Please contact Unisense if
you need guidance on how to find the concentration of total dissolved sulfide from the SulfiLogger ™ sensor
signal (only dissolved H
2
S). For many purposes however, the dissolved H
2
S measured by the SulfiLogger ™
sensor is indeed the parameter of interest, since the concentration of dissolved H
2
S is directly linked to the
emission of gas phase H
2
S which gives rise to the well-known odour and corrosion problems in the sewer.
Measuring the concentration of H
2
S in the liquid instead of in the gas phase gives a more reliable signal
since the measurement is independent of the daily variations in ventilation conditions in the head space
of the sewer, and it is independent of the exact mounting position of the sensor (in the liquid, the sulfide
concentration is fairly homogeneous, whereas very large differences in gas phase concentration has been
seen from top to bottom of sewer head spaces).
Electrochemical sensors are sensitive to temperature changes, and for this reason each transducer in the
sensors head is compensated for temperature effects with reference to an internal temperature measure-
ment in the SulfiLogger™ sensor’s sensor head.
MEASURING IN DIFFERENT MEDIA -UNIT CONVERSIONS
The electrochemical microsensors in the SulfiLogger ™ sensor’ sensor head measures the partial pressure of
H
2
S. In the gas phase, this can be converted to a ppm -reading if the total barometric pressure is known, and
in the liquid phase the measured value can be converted to a concentration measured in either µM or mg/L
by using Henry’s constant and the molar weight.
Each sensor is ordered with a specification of medium type, and the signal output from the SulfiLogger ™
sensor is chosen as ppm for gas phase sensor heads and S−mg/L for liquid phase sensor heads, the "S" in
front of mg/L meaning that only the sulfur fraction of the weight is counted in the specified measurement.
The ppm values for gas phase sensors is calculated by using a standard barometric pressure of 1 atm =
101325 Pa, and the mg/L values for liquid phase sensors is calculated by using a temperature corrected
value of Henry’s constant. Please note that other dissolved substances and high salinity values may also
influence the conversion to mg/L units. For more information on this, please contact Unisense.
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SPECIFICATIONS
SULFILOGGER™SENSORS
SulfiLogger™ S1/X1-1020-5mgL S1/X1-1120-5mg S1/X1-1120-1000ppm X1-1220-1000ppm
Environment Wastewater
Pressurized
wastewater Pressurized gases Pressurized gases
Measurement
range 0-5 mg/L 0-5 mg/L 0-1000 ppm 0-1000 ppm
Water depth/
Pressure 10m 3 barg 3 barg 10 barg
Input power 20 to 30 V 20 to 30 V 20 to 30 V 20 to 30 V
Output data
RS-232 or
4-20 mA
RS-232 or
4-20 mA
RS-232 or
4-20 mA
RS-232 or
4-20 mA
Mounting
Free hanging
Wall mounted
In-line
Flow cell
In-line
Flow cell
In-line
Flow cell
TECHNICAL SPECIFICATIONS
Accuracy +/- 5% of full range
Response time (t90) <25 seconds
Detection limit 1% of full range
Operating humidity range 0-100%
Design temperature range -20◦C to +60◦C ( -4◦F to +140◦F)
Operating temperature range 0◦C to +40◦C ( 32◦F to +104◦F)
MECHANICAL SPECIFICATIONS
Length 240 mm
Diameter Ø48.3mm / 1 ½” pipe
Weight 0.85 kg
Material Stainless Steel - EN 1.4404 (316L)
Warranty 3 months
CHEMICAL INTERFERENCES SPECIFICATIONS
Gas Formula Interference in gas (%)1Interference in liquid (%)2
Methane CH40 0
Carbon dioxide CO20 0
Nitrogen N20 0
Oxygen O20 0
Air O2, N2, Ar 0 0
Nitrous oxide N2O 0 0
Ammonia NH30 0
Hydrogen H20.8 96
Carbon monoxide CO 0.6 77
Dimethyl sulfide (CH3)2S 18 18
Methyl mercaptan CH3SH 174 44
Ethyl mercaptan C2H6S 13 14
Sulfur dioxide SO240 1
1Given as signal for the interfering species in % of H2S signal at equal partial pressures.
2Given as signal for the interfering species in % of H2S signal at equal molar concentrations.
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BEST PRACTICES
WASTEWATER INSTALLATIONS
When installing the SulfiLogger™ sensor in sewer networks, the following may serve as guidelines:
• Hydrogen Sulfide (H
2
S) is developed under oxygen free conditions in sewers which typically occurs in
force mains (pumped sewer lines). The concentration of dissolved H
2
S increases when the residence
time and/or temperature of the wastewater increase. H
2
S is released at the end of the pipe, where
the wastewater is again in contact with air (head space). This can be a simple overflow to gravitational
sewer lines, a pump sump for a subsequent force mains pump line, a buffer tank or similar.
• The easiest and recommended way of deploying the SulfiLogger ™ sensor for H
2
S monitoring in sewer
networks is to install the sensor to a connecting extension pipe. The pipe must be secured to either
the sewer wall or suspended using a steel wire attached at the inlet screen. Make sure the selected
installation method protects the sensor, as a free hanging installation in turbulent water may cause
the sensor to hit well walls or other objects.
• The dissolved H
2
S is released to gas phase during the first stretch of an aerated sewer. The exact dis-
tance of release depends on many different parameters such as turbulence and ventilation conditions,
but in general it is advisable to measure as close to the end-of-pipe of the force main as possible to get
a realistic measure of the initial H2S concentration.
• The SulfiLogger ™ S1/X1-1120-5mgL sensor can be mounted at access points directly on the force
main. This can either be done by attaching the sensors threaded fitting to the pressure pipe or through
a dedicated load-lock system at the chosen position on the pipe. Note however, that liquid velocities
are often high in pressurized pipes, and hence there is an increased risk of sensor damage associated
with this type of measurements.
• In general it is recommended that the SulfiLogger ™ sensor is mounted in a way where it is either
always submerged or always out of the water (in the head space). Interpretation of data can be difficult
if the SulfiLogger ™ sensor is intermittently submerged. Furthermore, a mounting at a position where
the SulfiLogger ™ sensor gets in and out of the water often leads to an increased risk of biofouling and
scaling, which significantly limits the time with reliable data in a field deployment.
• To minimize the need for regular sensor cleaning, it is advisable to select a measurement location with
adequate flow and turbulence around the sensor. It is advisable to avoid stagnant water conditions
whenever possible, as stagnant water gives ideal conditions for biofouling. For new installations in
wastewater environments it is recommended to inspect and clean the sensor once per week initially
to ensure stable operations and then adjust the maintenance routine based on the inspected fouling
conditions.
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TROUBLESHOOTING
Problem: The SulfiLogger ™ sensor is showing values close to zero all the time even though grab sample
analysis of the medium shows significant sulfide concentrations.
Solution: The inlet of the SulfiLogger ™ sensor my be blocked by fouling. Try rinsing the sensor and gently
wiping the front with a wet cloth, taking care not to apply force around the inlets of the sensing elements.
If the measurements are performed in liquid phase (e.g. in wastewater), check the pH-value of the liquid.
If the medium is alkaline (above pH-8) then the dissolved sulfide is primarily on the HS− -form, which is
not detected by the SulfiLogger ™ sensor. For slightly alkaline pH-values (pH-7-8), the pH-effect can be
corrected for, but for higher pH-values, we recommend using the SulfiLogger ™ sensor in a low-volume
sidestream reactor, where the wastewater is acidified to ensure that all dissolved sulfide is on the H
2
S-form.
Problem: The SulfiLogger™ sensor does not measure correct values according to our standard tests.
Solution: When judging the accuracy of the SulfiLogger ™ sensor we always recommend to apply a gas phase
measurement with gas from a pre-mixed gas bottle containing a known H
2
S concentration. Please note
that the accuracy (grade) of gas bottle concentrations vary. The accuracy should be stated on the bottle or
can be provided by the vendor. If judging the accuracy of the SulfiLogger ™ sensor based on liquid phase
measurements there are various ways to do this, all of which are prone to higher degrees of uncertainty than
the gas phase testing: One option is to prepare a standard (stock solution) mixture with a known concentra-
tion of H
2
S. Experience shows that this is not an easy task and that the concentration should continuously
be checked with laboratory equipment such as spectrophotometric methods. For more information on
this, please contact Unisense. Another option is to do grab sample analysis of wastewater and compare
the results of a sulfide analysis (e.g. Clines’ method) with the measurement values of the SulfiLogger ™
sensor. Please be aware, though, that standard sulfide analyses of wastewater grab samples measures the
Total Sulfide and not only the Total Dissolved Sulfide. For a comparison between the SulfiLogger ™ sensor
measurements and grab sample values it is thus needed to filter out any particulate sulfide of the samples,
and it is necessary to do a pH-based calculation of the total dissolved sulfide from the SulfiLogger ™ sensor
signal. Furthermore, it should be noted that correct sampling techniques and sample preservation should
be conducted with utmost care to avoid significant influences on the measured sulfide concentrations in the
grab samples. For further information and guidance on procedures for liquid phase comparisons, please
contact Unisense.
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Problem: Even though the SulfiLogger ™ sensor has just been calibrated, the measurements are showing
incorrect values.
Solution: When calibrating the SulfiLogger ™ sensor it is important that the procedure described in the Main-
tenance chapter above is followed. Please refer to the relevant chapter, and if this is still giving problems,
contact Unisense. Please also note that even though the signal of the SulfiLogger ™ sensor is temperature
compensated, the accuracy of the sensor is highest if the calibration is done at a temperature close to the
temperature of subsequent measurements.
Problem: During a calibration, the SulfiLogger™ sensor is unable to enter calibration mode.
Solution: Make sure to perfectly align the arrow on the calibration cap with the position of the indicator
light on the sensor when attaching the calibration cap - and make sure the cap is securely and fully attached.
For more information about the calibration process, please see the calibration guide on page 4 or view the
calibration video guide on www.sulfilogger.com.
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SulfiLogger™
Installation manual
Revision 1.01 (Valid from June 2019)
INTRODUCTION
This guide covers the steps required to in-
stall the SulfiLogger
™
sensor, including the
electrical and mechanical installation pro- cedures. For further information about the use and maintenance of the product, we kindly refer to the latest User Manual avail- able at
www.SulfiLogger.com
. Warranty
and legal information are described in the terms and conditions of your order confir-
mation and also available upon request.
SAFETY
Please read this manual carefully before un- packing, installing or operating the device.
Although the operation of the SulfiLogger
™
sensor is straightforward, it is mandatory to be familiar with the content of this manual. Failure to do so may result in serious injury to operators or other persons, or damage to equipment. Do not use or install the Sul- fiLogger
™
sensor and auxiliary equipment
in any other way than specified in this man- ual. Special attention must be paid to all danger and caution statements. Do not use the SulfiLogger
™
sensor outside the speci-
fied electrical, mechanical and thermal pa-
rameters as specified in the data sheet. Dur- ing the installation, please wear personal protective equipment (PPE) according to the safety regulation of the installation site. Hazard statement nomenclature
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or seri- ous injury.
!CAUTION
Indicates a potentially hazardous situ- ation that may result in minor or mod- erate injury.
IMPORTANT NOTE
Information that requires special em- phasis.
Hazardous areas - SulfiLogger™ sensor
EX version •
Pay close attention to other EX equip- ment used in conjunction with the Sul- fiLogger™ sensor.
•
Observe the specifications in the certifi- cate as well as national and local regula- tions.
•
Ensure that all personnel are suitably qualified.
•
Always use approved EX barriers for in- stallation.
Chemical and gas handling safety
DANGER
Handling hazardous gases such as hy- drogen sulfide or chemical samples containing dissolved sulfides can be dangerous. Users of this product are advised to familiarize themselves with safety procedures, use of personal pro- tective equipment (PPE) and the cor- rect use of gases and/or chemicals, and to carefully read all relevant Safety Data Sheets.
Installation and calibration of the SulfiLog- ger
™
sensor may include the risk of con-
tact with hazardous gases or liquids. Hydro- gen sulfide is a highly toxic gas and special precautions are needed to avoid the risk of injury or death. Furthermore, the installa- tion of the SulfiLogger
™
sensor in applica-
tions such as sewer networks or other facil- ities containing raw wastewater includes a risk of contact with a range of other chem- ical and biological threats, and any opera- tor performing installation or service on the SulfiLogger
™
sensor in such environments
should therefore be trained in the environ- mental safety and need of PPE for the given application. This manual does not cover any such training. The use of the SulfiLogger
™
sensor for specific applications may involve risks that are not mentioned here.
OVERVIEW
The SulfiLogger
™
sensor is available in dif-
ferent configurations in an ATEX certified
version (X1 sensors) and a non-ATEX certi-
fied version (S1 sensors). If your product is an ATEX certified product, it is crucial that you carefully follow the instructions re- lating to ATEX specific installation require- ments. EU - ATEX certification
The SulfiLogger™ X1 sensor has the follow-
ing marking:
ELECTRICAL INSTALLATION
Barriers for SulfiLogger™ X1 installation
When using the SulfiLogger
™
sensor, a
Zener barrier or EX isolator MUST always be used. We recommend using barriers
tested and approved by Unisense.
Hazardous area Safe area
Apparatus,
e.g. SCADA
Zener barrier
4-20 mA / power
EX isolator
or
RS-232 Zener barrier
EX isolator
or
Connection
The SulfiLogger
™
sensor has two connec-
tors: A 4-20 mA power connector (5-pin
M12 male) and an RS-232 connector (5-pin M12 female). We recommend using M12 plugs in stainless steel (EN 1.4404 / 316L).
These cables can be provided by Unisense.
Please note that products powered by a battery box may require special attention. Please refer to the latest User Manual. Port parameters Please note that the colors listed here only apply for cables supplied by Unisense. The SulfiLogger
™
is designed for 4-20 mA loop-
power. However, this connector can also be used only for DC supply. Power / 4-20 mA
Pin Color Connection
1 Brown Positive (+12 to 24 v) 2 White Not connected 3 Blue Negative (-) 4 Black Not connected 5 Gray Not connected
Communication (RS-232)
Pin Color Connection
1 Brown TXD 2 White Not connected 3 Blue RXD 4 Black GND 5 Gray Not connected
Grounding
The SulfiLogger
™
sensor should always be
grounded. However, national, regional or local regulation may apply. For use in
ATEX-regulated areas, see EN/IEC 60079-
14. Unisense recommends that the SulfiLog-
ger
™
sensor is always grounded using the
M6 thread at the back of the device for a secure grounding connection.
DANGER
Using a SulfiLogger
™
sensor from the
X1-series without grounding will void
the ATEX certificate.
APPENDIX: INSTALLATION GUIDE
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MECHANICAL INSTALLATION
The SulfiLogger
™
sensor can be installed in
four different ways:
a) Free hanging (liquids)
b) Fixed (liquids)
c) Inline (gases)
d) Fixed (gases)
FLOW
a) b) c) d)
xx
a) Free hanging (liquids)
This mounting option is ideal for low flow
reservoirs and channels and generally suit- able for short measurement campaigns.
The SulfiLogger
™
sensor is installed at the
end of an extension pipe, attached to an an- chor point using a steel wire and suspended down into the sewage. The extension pipe ensures that the cables and connectors are protected from fouling.
To perform this installation, you must
ensure: •
That the circulation in the reservoir is suf- ficient to ensure good mixing.
•
That the sensor tip can not touch the
walls and bottom of the reservoir, espe-
cially during high flows. If there is a risk of the sensor hitting the walls, then you should perform the "fixed (liquids)" instal- lation instead.
•
That you have a suitable anchor point available to attach the steel wire to.
•
That the length of the steel wire allows the sensor to remain in the liquid at all times while the back of the extension pipe at the same time remains out of the liquid.
b) Fixed (liquids)
This mounting option is ideal for permanent
installations in low and high flow reservoirs and channels. It is similar to the "Free hang- ing (liquids)" installation in most regards but here, the extension pipe (and sensor) is fixated - not hanging in the steel wire. Unisense does not supply brackets or any other materials for this installation method. c) Inline (gases) Directly on the main pipe
The SulfiLogger
™
sensor can be installed
on a pipe stub allowing measurement in a
closed system. •
Before installing the pipe stub a
30 mm
hole must be drilled in the main pipe.
•
The pipe stub is supplied by Unisense and must be welded onto the main pipe.
•
Use a spanner (size 36) to screw the Sul- fiLogger™ sensor onto the pipe stub.
•
Beware of the pressure rating of the Sul- fiLogger
™
sensor and ensure that the
pressure pipe system does not exceed
the pressure limit.
Bypass flow using a flow cell
A portion of the flow can be di-
rected/bypassed into a flow cell on which
the SulfiLogger™ sensor is installed. •
Before the installation, please ensure that the pressure and temperature rat- ings of the bypassed flow are within the specifications of the SulfiLogger
™
sensor.
• The flow cell is supplied by Unisense. •
Use a spanner (size 36) to screw the Sul- fiLogger™ sensor onto the flow cell.
d) Fixed (gases)
The SulfiLogger
™
sensor can be mounted
in pump wells, reservoirs etc. above wa-
ter level for gas phase measurements. The outer diameter of the SulfiLogger
™
sen-
sor resembles a
1.5 "
pipe and can thus be
mounted using a standard 1.5 " pipe ring. Extension pipe installation For free hanging and fixed measurements in liquids, an extension pipe must be at- tached to the SulfiLogger
™
sensor. This fig-
ure shows the steps needed to perform this installation: •
Unscrew the three hex screws on the back of the SulfiLogger
™
sensor and re-
move the outer ring.
•
Feed the cables through the extension pipe and attach them to the connectors on the sensor.
•
Align the sensor with the screw holes of the extension pipe and screw in the three hex screws to secure the sensor to the extension pipe.
Temperature rating
The sensor is designed to withstand temper-
atures from -20◦C to +60◦C.
DANGER
Exposing a SulfiLogger
™
sensor from
the X1-series for ambient tempera-
tures lower than -20
◦
C or higher than
+60◦C will void the ATEX certificate.
The sensor, both S1 and X1 series, performs
optimally between 0◦C and +40◦C. Disassembly
We do not recommend you to disassemble
the SulfiLogger™sensor.
IMPORTANT NOTE
Disassembly of the sensor will void the
warranty and render the sensor non-
functional.
DANGER
Disassembly of a SulfiLogger
™
sensor
from the X1-series will void the ATEX certificate.
SUPPORT
Unisense A/S
Tueager 1
DK-8200 Aarhus N Denmark E-mail: SulfiLogger unisense.com
Tel: [phone]
Fax: [phone] For further documentation, the latest User Manual and other resources, please
visit the SulfiLogger™ sensor website:
www.SulfiLogger.com
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SulfiLogger_Manual_EN_203.pdf
UNISENSE
UNISENSE, DENMARK
www.unisense.com · [e-mail]