SULFILOGGER™ USER MANUAL
SulfiLogger™ User Manual COPYRIGHT © 2019 - UNISENSE A/S REV.
TABLE OF CONTENTS Warranty and liability Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . Recycling program . . . . . . . . . . . . . . . . . . . . . . 1 1 1 General information Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Support Support, ordering, and contact information . . . . . . . 5 5 Overview 6 Maintenance Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . .
FCC Part 15, Class A . . . . . . . . . . . . . . . . . . . . .
WARRANTY AND LIABILITY 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, unauthorized repair, or modification of the product.
GENERAL INFORMATION Thank you for choosing the Unisense SulfiLogger™ sensor - the only hydrogen sulfide (H2 S) sensor on the market enabling: • Direct measurement of H2 S concentrations in either liquid or gas phase • Easy plug’n’play installation • Operation for measuring campaigns in harsh environments such as sewer networks • Easy cleaning, maintenance and calibration SAFETY Please read this manual carefully before unpacking, installing or operating this equipment.
! DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury. IMPORTANT NOTE Information that requires special emphasis. Hazardous areas - SulfiLogger™ sensor EX version • Pay close attention to other EX equipment used in conjunction with the SulfiLogger™ sensor.
(PPE) and the correct use of gases and/or chemicals, and to carefully read all relevant Safety Data Sheets. Installation and calibration of the SulfiLogger™ sensor may include the risk of contact with hazardous gases or liquids. It is especially important regarding the SulfiLogger™ sensor for hydrogen sulfide. Hydrogen sulfide is a highly toxic gas and special precautions are needed to avoid the risk of injury or death.
SUPPORT SUPPORT, ORDERING, AND CONTACT INFORMATION 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: +45 8944 9500 Fax: +45 8944 9549 Further documentation and support is available at our website sulfilogger.
OVERVIEW The SulfiLogger™ sensor is available in a number of different configurations. Some of these are available in ATEX certified versions. Please 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 sensor.
MAINTENANCE The SulfiLogger™ sensor has no active fouling handling, and the sensor head therefore needs periodic cleaning. The necessary cleaning frequency depends very much on the type of wastewater and on the turbulence around the sensor. Stagnant water gives ideal conditions for biofouling, and when choosing a mounting position it is therefore advisable to look for a position with relatively high flow / turbulence.
the field can be a good way to ensure that the sensor keeps the absolute accuracy after prolonged deployment. Initially it is recommended to calibrate the sensor before installation and subsequently once every month, but this can be subject to specific installation conditions. The calibration procedure is simple and has no demand for access to SCADA values or connection of computer/laptop or other data viewing devices.
table on page 13 for more details on the ordering of calibration equipment. Figure 2 shows how the calibration kit and gas bottle is mounted on the SulfiLogger™ sensor. The reduction valve on the gas bottle ensures that the correct flow of gas is exposed to the sensor, and the valve should therefore be opened fully when a calibration is ongoing.
Light indication Green, 1 per 4 sec Green, 1 per sec Green, 3 per sec Green and red, 1 per sec Green and red, 2 per sec Green, 15 times Red, 15 times Explanation Sensor is operating normally Calibration cap mounted Gas signal detected Minimum calibration Full calibration. Close and take off cap Calibration succeeded Calibration failed 2. Connect the gas bottle to the calibration cap with the supplied flow regulator and gas tube 3.
bration has been completed and it is time to terminate the calibration procedure 7. When either a minimum or a full calibration has been completed the regulator valve is closed on the gas bottle and the calibration cap should be removed. Pay close attention to the indicator light when removing the calibration cap since the result of the calibration is immediately shown on the indicator light when the magnetic switch is turned off.
aligned with the light indication signal when checking the calibration in order to avoid that a new calibration procedure is initiated.
ACCESSORIES Here is a list of accessories available for the SulfiLogger™ sensor. Please contact Unisense to order these items. LIST OF ACCESSORIES Unisense item no. S00021 S00022 S00023 C00005 C00004 S00032 S00020 C00055 C00002 C00003 C00056 S00016 S00017 S00049 S00035 Description SulfiLogger™ X1/S1 extension pipe kit RS-232 X1 barrier kit Power / 4-20mA X1 barrier kit H2S calibration gas, 1000ppm Gas flow regulator Calibration Cap Calibration Cap/Flow cell, threaded.
1. Verification of the sensor and battery status of the SulfiLogger™ sensor. 2. Easy access to the data stored in the SulfiLogger™ sensor device. The data can be exported in csv-file format. 3. Viewing of live data values from the SulfiLogger™ sensor. To download data from the SulfiLogger™ sensor, simply connect the RS232 cable to a USB port on a laptop with the SulfiLogger App installed. Open the SulfiLogger App and press the "Download data" button.
Figure 3: Connections on the PowerCom Box. The sensor cable is connected to the PowerCom Box using the sensor connection to the left. Data are downloaded from the SulfiLogger™ sensor to a computer using the USB port on the right side.
SPECIFICATIONS OPERATING PRINCIPLES OF THE SENSOR 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 H2 S which is one of the three forms of dissolved sulfide in equilibrium in the water phase, H2 S, HS- , and S2- .
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 sensor heads is compensated for temperature effects with reference to an internal temperature measurement 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 H2 S.
SulfiLogger™ sensor S1-10105mgL S1/X1-10205mgL Environment Range Max pressure Input power Wastewater 0-5 mg/L 10m Battery Wastewater 0-5 mg/L 10m 20 to 30 V RS-232 or 4-20 mA Free hanging or Wall mounted Output data Mounting Logged data Free hanging or Wall mounted S1/X1-11205mgL or 1000ppm Pressurized wastewater or gases 0-5 mg/L 3 barg 20 to 30 V RS-232 or 4-20 mA In-line or Flow cell X1-12201000ppm Pressurized gases 0-1000 ppm 10 barg 20 to 30 V RS-232 or 4-20 mA In-line or Flow cell Technical
Gas Formula Interference in gas (%)1 Interference in liquid (%)2 Methane CH4 0 0 Carbon dioxide CO2 0 0 Nitrogen N2 0 0 Oxygen O2 0 0 Air O2 , N2 , Ar 0 0 Nitrous oxide N2 O 0 0 Ammonia NH3 0 0 Hydrogen H2 0.8 96 Carbon monoxide CO 0.6 77 Dimethyl sulfide (CH3 )2 S 18 18 Methyl mercaptan CH3 SH 174 44 Ethyl mercaptan C2 H6 S 13 14 Sulfur dioxide SO2 40 1 1 Given as signal for the interfering species in % of H2 S signal at equal partial pressures.
SULFILOGGER™ SENSOR SEWER INSTALLATIONS - TIPS AND TRICKS When installing the SulfiLogger™ sensor for monitoring hydrogen sulfide in sewer networks the following notes may serve as guidelines for a monitoring campaign: • Hydrogen Sulfide (H2 S) is created under oxygen free conditions in the sewer which typically occurs in Force Mains (pumped sewer lines). The concentration of dissolved H2 S increases when the residence time and/or temperature of the wastewater increase.
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).
TROUBLESHOOTING Problem: The SulfiLogger App does not recognize the SulfiLogger™ sensor when it is connected (version 1010 only). Solution: Try charging the battery of the PowerCom Box, or try disconnecting the wire from the PowerCom Box to the sensor and reconnect it subsequently. 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.
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 concentration of H2 S.
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.
COMPLIANCE INFORMATION FCC PART 15, CLASS A This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
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! CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury. DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. Hazard statement nomenclature Please read this manual carefully before unpacking, 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.
MECHANICAL INSTALLATION x b) x c) FLOW d) • 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. • That you have a suitable anchor point available to attach the steel wire to. • That the sensor tip can not touch the walls and bottom of the reservoir, especially during high flows.
UNISENSE UNISENSE, DENMARK www.unisense.com · info@unisense.
