Extox-Uni i-1 controller user manual
Contents
1. PLACEMENT OF TRANSMITTER AND CENTRAL UNIT The placement of transmitter and central unit is determined by project plan In lack of it its placement can be decided only with care The placement of transmitters can be determined according to the informations indicated in the manuals In the case of the central units we have to choose such places outside the sector limits but within the range of maximum possible installation distance where the environmental circumstancies are suitable for operation and the easy handling and rational cabling can be ensured The central unit should be protected against the effect of heat radiation and can be operated only in allowed temperature range If cable junction box is applied to the apparatus it should be placed close to the central unit considering space and trace requirements of applied cables ilkonyvAng doc 8 The EXTOX UNI i 1 type central unit should be mounted on even surfaced vertical wall When placing the transmitters sensors the shape of free air space the location of hazardous points the occasional air flows and the density of occuring gases are to be taken account For gases lighter than air H CH CO NH the sensors shall be placed in the upper part of air space for heavier gases they must be put into lower locations The solvent vapours are heavier than air 5 3 CABLING OF TRANSMITTER AND CENTRAL UNIT The transmitter of gas concentration measuring devices type EXTOX UNI i 12. ilkonyvAng doc 4 The apparatus starts operation with I minute delay after switching on because of the features of the sensors During timing the relays are not active the signal levels are not activated This is self error while with reference to the 4th signal level it means state of danger warning After timing period the relays and the status indicator LED s are adjusted to operational state determined by the actual concentration The actual concentration may be traced permanently on 3 digit 7 segment LED display The display shows the values according to the measurement ranges as follows inLEL t in volume in ppm In case of significant excess of measuring range the device becomes overdriven Inscription of OVL will appear on the display the signals programmed for increasing concentrations remain switched on not depending on the further changes of concentration In such cases the reason of overdrive should be checked and it must be terminated The state of overdrive is allowed to be cancelled only afterwards either by pushing the inner pushbutton or the continuous pushing of reset button for more than 15 seconds Caution The state of overdrive is allowed to be cancelled after making sure evidently that no dangerous concentration is available The signal levels the self error signal and the state of acoustic signals are displayed by the LED s located on the front panel Red colored LED s belong to the singal le
3. should be connected by separate cable to the appropriate central unit of relevant manufacturing number All the cables but in particular the cables connecting the central unit and the transmitters shall be definitely identifiable Into the transmitters we can couple only such cables the diameter and core cross section of which meet the reguirements of the technical data of the transmitters When cabling the transmitter to be installed into explosion dangerous zone the prescriptions of MSZ EN 60079 14 should be taken account The loop resistance of transmitter cable shall not exceed the highest allowed value The transmitter cable should be affixed within distance of 40 cm from the transmitter We have to strive for minimization ofthe the line section within the sector limits when designing the trace of transmitter cables without having definite project plan Lapping in transmitter cables should be avoided if possible Nevertheless if this is unavoidable in explosion dangerous space lapping is allowed only in certified explosion proof connectionbox For cabling we can use the offered cables or technically suitable replacement types If there are electric circuits of different voltage levels towards the actuating units the wires of them shall not be placed in the same cable bundle When cabling the nacessary cables of transmitter actuating supplying accoustic signal etc should be installed on the designed cable traces When determining the
4. 102 max 135 x 126 x 95 mm approx 0 55 kg MWGIOONE ELEKTROCHEMICAL TRANSMITTER Type Response time Precision Supply Current drain Explosion proof protection Cable core cross section Diameter of cables Dimensions Allowed outside temperature Protection MSZ IEC529 ilkonyvAng doc MWG100NE depending on measured materials and the sensor depending on measured materials and the sensor 14 28V Direct Voltage 4 20mA depending on concentration No 0 5 1 5mm 9 11mm width 102mm height 170mm depth 58mm weight kb 850g 0 40 C IP32 16 EXTOX UNI i 1 CENTRAL UNIT Explosion proof protection Power supply Mains fuses Class of protection against indirect contact Measuring range Operated transmitter Max loop resistance of transmitter cables of transmitter types E TD P1 and E TD S1 Loadability of controlling relay outputs Signal levels Recorder output Dimensions Protection MSZ EN 60529 Operational temperature ilkonyvAng doc No 210 242V 50Hz 14VA or 22 28V DC 0 3A The occasional supply of 24V may be only with reinforced insulation from 230V network 125mAT 250V II Identical vith measuring range of transmitter E TD S1 semiconductor E TD P1 catalytic Other ones with 4 20mA output 32 with cable of SZRMK VMJ 4X1 5mm this is approx 150m 250V AC or 30V DC 4A On the acoustic relay output in voltage controlled
5. Depending on type of materials and measuring range they are available with the following sensors semicoductor catalytic infrared and electrochemical o 3 Inthe case of semiconductor based sensors the sensitive element is directly connected to the central unit without processing electronics The measuring transducer makes use of the characteristics of special purpose semiconductor i e the elactrically heated semiconductor layer can change its conductivity i e resistance considerably The performance of sensors is typically nonlinear as a function of concentration In the case of use of catalytic sensors a platinum filament is heated by electric current in the measuring transducer The platinum filament is surrounded by catalyzer material The catalyzer is capable of oxidizing the flammale materials even below normal combustion temperature in presence of oxygen of air This oxidation goes with temperature increase depending on the concentration of inflammable material which increases the resistance of heated platinum filament This can be detected as an electric signal in a bridge circuit In this case the sensor also coupled directly to the central unit In the case of application of infrared sensors the measurement of concentration is based on the light absorption properties of the material to be measured in infrared spectrum The change of absorption as a function of concentration is detected and transformed into electric signal by
6. cable lengths we have to reckon with connectability allowances The connecting of cables is not the job of the cable mounting experts but this process is part of installation ilkonyvAng doc 9 5 4 CONDITIONS OF INSTALLATION INSTALLATION The preconditions of putting into operation are the existence of properly installed gas sensitive apparatus alongwith cabling and power supply The installation of the apparatus can be performed by an authorized expert who attended courses of operators technical head of repairment service of damp proof and explosion proof electrical eguipments and having proficiency of proper installation of EXTOX UNI i 1 type gas detectors During installation the cables of apparatus should be connected The actuating electrical circuits which are connected to relay contacts should be checked according to loadability the power supply according to its parameters and the complete apparatus in respect of explosion proof requirements After getting favourable results a computer should be connected to the device in which a diagnostic program suitable for the commissioning and maintenance of EXTOX UNTI i 1 is running The apparatus can be energized and afterwards total operational inspection should be performed by means of calibration material The data of installation are stored in the computer On the basis of stored data an installation protocol is made on successful installation duly signed by the insallation person a
7. the sensor This electric signal is converted into output current of range of 4 20 mA by the transmitter s electronic circuits which are interconnected to the sensor This output current is in direct proportion to the concentration In the case of application of electrochemical sensors the detecting elements generate electric current by means of chemical reactions as a function of measured material concentration The signal processing electronics amplify the output current of the sensor and convert it into the range of 4 20 mA current consumption The properties of electrochemical transmitter conform to the properties of applied electrochemical sensors The apparatus enables the application of other transmitter types of 4 20 mA as well ilkonyvAng doc 6 EXTOX UNI E TD S1 It is designed for measurement of concentration of numerous inflammable and explosive materials and operates with semiconductor transducers stationary diffusion type explosion proof transmitter EXTOX UNI E TD P1 It is designed for measurement of concentration of several inflammable and explosive materials and operates with catalytic measuring transducers stationary diffusion type explosion proof transmitter EXTOX UNI IRTA I and IRTA 2 It is designed for measurement of concentration of carbon dioxide with infrared measuring transducer stationary diffusion type not explosion proof transmittes MWG 100NE It is designed for measurement of concentration of se
8. version the mains voltage will appear loadability is 1A Programmable within measuring range 4 20mA Rloadmax 220Q or 0 4 2V Rloadmin 100KQ The electric circuit connected to the recorder output can only be separated with reinforced insulation from the 230V network 310 x 165 x 94 mm Wi Hei Dee IP65 0 C 40 C 17 BASIC CABLE JUNCTION BOX Power supply Individual power consumption Protection MSZ EN 60529 Potential free relay contacts and loadability Um Inner relay operationg voltage 230V 10 50Hz 20VA added to power consumption of central unit IP54 sound I pce of closing 250V 5A 50Hz prealarm 2 pcs of closing 250V 5A 50Hz alarm 2 pcs of droping 250V 5A 50Hz 24V AC At different designs the data are subject to change MEASUREMENT TECHNIQUE DATA OF THE INSTRUMENTS TRANSMITTER AND CENTRAL UNIT TOGETHER Response time tso too Precision ilkonyvAng doc Depending on applied transmitters and measured material see technical data of transmitters in case of E TD S1 E TD P1 according to MSZ EN 50054 2000 and MSZ EN 50057 2000 Depending on applied transmitters and measured material see technical data of transmitters in case of E TD S1 E TD P1 according to prescriptions of MSZ EN 50054 2000 and MSZ EN 50057 2000 18 9 GUARANTEE M szer Automatika Ltd undertake guarantee of gas concentration measuring devices types EXTOX UNI K1 K2 for l yea
9. EXTOX UNI 1 1 INTELLIGENT STATIONARY GAS CONCENTRATION MEASURING DEVICES MANUAL LAN Ma www gazerzekelo hu Manufacturer MUSZER AUTOMATIKA KFT H 2030 rd Als u 10 Pf 56 Hungary Telephone 36 23 365 087 365 152 365 280 366 748 366 838 Telefax 36 23 365 837 E mail gaz muszerautomatika hu Service H 2040 Buda rs Baross u 77 CONTENTS ilkonyvAng doc 1 PURPOSE OF DEVICES 2 MAIN FEATURES 3 CONSTRUCTION 4 DESCRIPTION OF OPERATION 4 1 Operation of central unit 4 2 Operation of transmitters according to applied sensors 5 INSTALLATION AND PUTTING INTO OPERATION OF DEVICE 5 1 Conditions of installations 5 2 Placement of transmitter and central unit 5 3 Cabling of transmitter and central unit 5 4 Conditions of installation installation 6 HANDLING AND OPERATIONAL INSTRUCTIONS 6 1 Handling units status signals 6 2 Connection points 6 3 Operation handling interpretation of status signals 6 4 Cleaning 7 CONDITIONS OF SAFE OPERATION 7 1 Operation in explosion dangerous environment 7 2 Aspects of protection against indirect contacts 7 3 Meanings of abbreviations and signals 8 TECHNICAL DATA 9 GUARANTEE 10 SERVICE MAINTENANCE 11 APPENDIX Manuals of transmitters E TD P1 and E TD S1 manufacturer s statement attached drawing ilkonyvAng doc 2 1 PURPOSE OF DEVICES Az EXTUX UNI i l is general purpose gas and solvent vapour sensing apparatus which meets the re
10. atus into service status by the service button after realizing that there is no dangerous concentration around in order to ensure the safe operation of the supervised institution In service status the instrument shows the inscription of SEr together with a concentration value alternately if the type of failure allows it The displayed concentration figure cannot be considered as realistic The failured apparatus is not capable to fulfil its duty properly in service state either The reparation of the apparatus must be arranged ilkonyvAng doc 13 6 4 7 1 7 2 CLEANING The cleaning of devices is only needed if dirt impedes operation The removal of such dirts usually requires disassembling of the apparatus which is the job of the service In other cases cleaning is allowed but this cannot endanger the safe operation Water or other chemicals are not allowed to get into the apparatus Use of solvents that can damage the cover are not allowed either CONDITIONS OF SAFE OPERATION OPERATION IN EXPLOSION DANGEROUS ENVIRONMENT It is prohibited to connect the central unit of EXTOX UNI i l to such electrical appliances that are not necessary for proper use or the electrical parameters of which exceed the limits indicated in the technical data of the apparatus In the gas sensitive apparatus any modification is prohibited without permition of the manufacturer In explosive environment only approved explosion proof transmit
11. forms gas concentration into electric signals while the central units operate the transmitters and elaborate the elecric signals of them which depend on gas concentration The device can operate with many types of transmitters The types of transmitters are determined by the concentration of chemicals the measuring range and the danger rate existing in the area The internal constructions of central units are partly different because of the different parameters of various transmitters DESCRIPTION OF OPERATION OPERATION OF CENTRAL UNITS The task of central unit type EXTOX UNI i 1 is to operate the connected transmitters processing the incoming electric signals which are coming from transmitters dependending on gas concentration information transfer output of alarm signals control of actuation as well as event recording Its performance conform to the type and technical features of transmitters and measuring range They have four signalling levels in addition self error and acoustic signal with relevant potential free relay output contacts The signal levels the values between the switching on and off of the signal levels hysteresis signalling for increasing or decreasing concentration blocking of the signals switching off either by manual cancellation or automatically and the operation of relay outputs to close or brake in active state are programmable The individual signal levels can be used for any actuation control functions upo
12. guirements of industrial users in the first place according to the latest directives and standards of European Union Its purpose is the supervision of zones and places the measurement of concentration of dangerous contaminating materials which mixed into the air for some reason i e risk of explosion and toxic danger and to avert dangers by automatic actuation control 2 MAIN FAITURES Stationary system with transmitters Measurement of concentration of explosive toxic and other materials by means of different type transmitters Processor controlled intelligent central unit suitable for operation of single transmitter Continuous concentration and status display Programmable 4 detection levels acknowledging acoustic signal self error Acoustic signal control adapted to any signal level Distinguished control according to signal levels on the acoustic relay output Potential free or voltage controlled acoustic relay output Built in service key switch detection and displaying of switching to service status Recorder output Indication of power supply failure in uninterrupted service Event recording ilkonyvAng doc 3 4 1 CONSTRUCTION The EXTOX UNI i 1 gas concentration measuring devices are built of transmitters and central units The transmitters and central units can be connected together by transmitter cables The transmitter includes measuring transducer which trans
13. l LED red 4th signal level red 3rd signal level red 2nd signal level red Ist signal level red network uninterrupted operation LED green operation self error LED green reset acknowledging botton service switch with key overdrive comparator cancellation button accessible only after removing cover computer communication connection point accessible only after removing cover 11 6 2 CONNECTION POINTS 230V L 230V N HANG N HANG L JSZA JSZA JSZ3 JSZ3 JSZ2 JSZ2 JSZ1 JSZ1 OH OH RK GND SZM SZML SZM F GND F FK GND Iki Ibe GND mains supply phase conductor mains supply neutral conductor acoustic signal relay contact under potential it is neutral conductor acoustic signal relay contact under potential it is phase conductor 4th signal level relay contact 4th signal level relay contact 3th signal level relay contact 3th signal level relay contact 2nd signal level relay contact 2nd signal level relay contact Ist signal level relay contact Ist signal level relay contact self error relay contact self error relay contact recorder output positive pole recorder output negative pole supply of 24V positive pole for UPS uninterrupted operation sensing point for UPS supply of 24V negative pole for UPS E TD S1 transmitter connection point E TD S1 transmitter connection point E TD S1 transmitter connection point E TD S1 transmitter connecti
14. n request but the basic signal level settings No 1 2 and 3 are of advance signal types i e they are resetted automatically and their relay outputs close if the signal is active The 4th signal level is of alarm type and cannot be switched off automatically the relay output brakes in the case of active signal The changing of its basic setting is not recommended For safety reason the application of 4th signal level is recommended for emergency stop disconnection of the current closing of gasmagnetic valve etc Switching out of the signal levels is possible by the reset button if it has block setting and the concentration allows it anyway The relay output of self error brakes in the event of failure This signal is not blockable one the reset button is ineffective on it The acoustic signal may be assigned to any signal level its relay output gives out shortcircuit or mains voltage in active state depending on the application of jumpers inside the apparatus The device controls the acoustic alarm in such a way that it can be decided which signal level is active by means of the sound as well The acoustic alarm gives out successive sound pulses repeated at regular intervals the number of which corresponds to the highest number of actice signal levels Switching the acoustic alarm off is possible bay means of the reset button For acoustic alarms we have to use the ones with continuous and identical sound for the above indicated operation
15. nate alternately in succession After timing period the measured concentration value can be read permanently The signals start operation according to the measured concentration and the preprogrammed signal levels The LED of a given signal level will illuminate i e the signal is active if the concentration reaches the preprogrammed value The activation of signals will activate the acoustic signal as well The acoustic signals can be cancelled by the reset puhsbutton The signals which are not blockable according to the programming will be reset automatically in the function of concentration The blockable signals can be cancelled by the reset button only provided that the concentration allows it In the event the concentration exceeded the measuring range significantly inscription of OVL appears on the display In this case the signals activated by increasing levels cannot be cancelled The reason of this state should be checked by all means and it must be terminated After that the reset button should be pushed continuously for minimum 15 sec the normal operation will be reset only in this way If the _ operation self error LED goes out it means the failure of the apparatus In case of certain errors it can be observed on the operation of the indicator as well e g non interpretability of the signal or on the basis of irregular brightness distribution among the segments In this case the responsible person is to switch the appar
16. nd the customer or his her representative accepting the works The total operation inspection includes the inspection of the apparatus only the check of operation of actuating circuits of relay contacts is not included This way for example if the actuating circuits are not built up by the time of the installation the gas sensitive devices can be installed anyway It is worth carrying out the installation in such a predetermined period so that the complete system can be tested alongwith emergency ventilation gas magnetic valve acoustic and light signals in order to avoid later possible malfunctions The installation can be performed upon order The planned date and circumstancies of installation should be checked with our service 3 4 days in advance at the following address Address 2040 Buda rs Baross u 77 Telephone fax 36 23416 761 If the conditions of installation are not ensured or the technical circumstancies are not suitable in the predetermined period and promt solution is not possible the installation fails by mistake of customer This fact is to be written in the duly signed protocol as well In this case the failed installationt is at the cost of the customers ilkonyvAng doc 10 6 HANDLING AND OPERATIONAL INSTRUCTIONS 6 1 HANDLING UNITS STATUS SIGNALS On central units the following handling units are available F KX KF ilkonyvAng doc three digit seven segment LED acoustic signa
17. on point E TD P1 transmitter connection point E TD P1 transmitter connection point E TD P1 transmitter connection point 20mA_ transmitter connection point 20mA_ transmitter connection point 20mA_ transmitter connection point 20mA_ transmitter connection point AAA A Remark out of listed transmitter connection points the apparatus always contains only the relevant connection points of applied transmitter To the 4 20mA transmitters belong EXTOX UNI IRTA 1 and IRTA 2 alongwith types of MWG I00NE as well ilkonyvAng doc 12 6 3 OPERATION HANDLING INTERPRETATION OF STATUS SIGNALS The operation of _EXTOX UNI i l gas concentration measuring apparatus can be traced by means of the signals of central units The operation of instrument is displayed by the light of the LED s as follows operation self error network uninterrupted and the light of 3 digit indicator If a UPS is connected properly to the apparatus the LED of network uninterrupted may not only illuminate continuously but it can flash as well Even if it is flashing the apparatus works properly but it indicates only that according to the UPS no network voltage is available When switching on the device starts operation after timing of 1 minute approximately During timing period the LED s of signal levels and acoustic alarm do not light On the indicator temporarily not the real concentration values will appear and the decimal points illumi
18. r after date of installation if the instruments are properly used The guarantee refers to failures originated from manufacture The conditions of guarantee subject to full observance of prescriptions of installation commissioning handling and safe operation 10 SERVICE MAINTENANCE The gas detection devices need regular servicing so that they can operate perfectly in long term The maintance works cover not only the assessment of general technical conditions but the checking of parts and their mountings which determine the explosion proof protection the control of operation and if necesarry the error correction and rectification of setting The prevention of occasional operational abnormalities is also possible beside the regular maintenace In case of failure for fast error correction the following data should be specified location of system installation date of failure description of failure circumstancies of failure occurence Maintenance contract can be prepared with the service staff of M szer Automatika Ltd after the guarantee period of I year By the contract the periodical regular maintenance of the apparatus can be ensured in advance ilkonyvAng doc 19
19. servicing them it is practical that the inscription of Switching off prohibited to be indicated close to the main switch or break switch 7 3 MEANINGS OF ABBREVIATIONS AND SIGNALS LEL Lower Explosion Limit in percentage Volume Volume percentage ppm parts per million parts per million of given volume F3 Mains fuse F4 Fuse for acoustic relay contact It has role only in cases under potential O Device protected by double or reinforced insulation Caution Reference to the documentation C The apparatus meets the relevant requirements of European Union standards ilkonyvAng doc 15 S TECHNICAL DATA EXTOX UNI E TD SI SEMICONDUCTOR TRANSMITTER Detailed technical data and prescriptions of application are in its separate manual EXTOX UNI E TD P1 CATALYTIC TRANSMITTER Detailed technical data and prescriptions of application are in its separate manual EXTOX UNI INFRARED TRANSMITTER Type Measured material Response time tg Precision of repetition Supply Output signal Sensitive element Explosion proof protection Protection MSZ IEC 529 Outside temperature Diameter of cables Cable core cross section Allowed loop resistance Dimensions with stand Weight with stand EXTOX UNI IRTA 1 and IRTA 2 carbon dioxide 22s 10 2 19 28V DC max 180mA 4 20mA linear current consumption two beam infrared no IP 54 20 40 C 7 9mm 0 5 1 5mm
20. ters are allowed to use The detailed conditions of safe application of explosion proof transmitters can be seen in their separate manuals ASPECTS OF PROTECTION AGAINST INDIRECT CONTACT The central units are electrical devices that are operated by supply voltage of 230 V Opening of their enclosure under voltage by unauthorized persons is forbidden and dangerous to life The cabling of central unit and cable junction box if any to be made in a way that the reinforced insulations are not to be damaged among the electric circuits of different voltage levels The connection of devices are to be made according to the allotment of connecting points or description of handbook of connections The transmitter is not to be connected to the earthing wire but for example the mounting onto earth connected iron framing is allowed The device type EXTOX UNI i 1 is of plastic armoured one with reinforced insulation and belongs to protection class II This device shall not be connected to earth conductor wire ilkonyvAng doc 14 If the user supplies separate break switch protected cable for the power supply of the gas detection devices the break switch or mains switch if any should be located close to the gas detection apparatus and it should be indicated which device is operated by them Remark since the gas detection instruments are safety devices of continuous operation and switching them off is possible only in justified situation e g when
21. vels and the acoustic signal which illuminate in active state of the signals The color of LED s indicating the operation self error and network uninterrupted is green The LED of operation self error illuminate during the operation it is switched off in case of failure The LED of network uninterrupted operation illuminate permanently in network operation in the event of power failure it is flashing The apparatus recognizes the power failure on the basis of information coming from the UPS The apparatus includes recorder output as well which makes it possible to further analyse the gas concentration in analogue format in range of 4 20 mA or 0 4 2V In case of self error the output current decrases significantly below 4 mA and the output voltage below 0 4 V The apparatus operates from supply voltage of 230V 50 Hz or from 24 V direct voltage Making its operation uninterrupted is proposed by means of purpose made UPS of 24 V The apparatus also has built in service switch which is capable in service status to shortcircuit the contact belonging to the 4th signal level In service position the apparatus displays alternately the inscription of SER and the actual concentration and furthermore makes logging on time of switching on and off of service status ilkonyvAng doc 5 4 2 OPERATION OF TRANSMITTERS ACCORDING TO APPLIED SENSORS The EXTOX UNI i l gas sensitive devices are working basically on four measurement principles
22. veral toxic materials and oxygen and operates with electrochemical measuring transducers stationary diffusion type not explosion proof transmitter ilkonyvAng doc 7 ods 3 2 INSTALLATION AND PUTTING INTO OPERATION OF DEVICE CONDITIONS OF INSTALLATION OF DEVICE The EXTOX UNI gas concentration measuring devices can be installed only in such places the requerements of which are satisfied by the technical parameters of the instruments Furthermore the installation site should be selected in a way that the possibility of usual maintenance works and the proper and safe operation can be ensured Since the two parts of the apparatus the central unit and the transmitter have completely different electrical characteristics we have to take different rules into account The central units and the cable junction boxes are of non explosion proof ones therefore using them in explosion dangerous rooms or sectors is forbidden The transmitters may be installed according to the prescriptions of manuals only In the event the installation is stipulated by the authorities the installation should be based on a project plan The regulations of that should be complied with and the content of project plan should not contradict the installation rules hereby mentioned If no detailed project plan of installation is available or the procedure of it is uncertain please contact the company service or the experts of manufacturer to clarify the questions
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