Electrochemical Oxygen Transmitter LO , MO User Manual
Contents
1. Calibration must only be performed under operation typical ambient conditions Always consider the commissioning instructions when exchanging the sensor element Only trained technicians should perform the following e Cut the protective cap at the gas inlet carefully off by using a knife only for enclosure D F See fig 1 Check mounting location Check power voltage Calibrate the transmitter if not factory calibrated Required instruments to commission calibrate the transmitter e Test gas bottle with test gas O with 20 9 vol or with ambient air 20 9 vol O e Gas pressure regulator with flow meter Calibration adapter with tubing Type XXXXX See Fig 6 Digital voltmeter with range 0 10 VDC accuracy 1 Small screwdriver 5 1 Calibration Zero Point Output Signal 4 mA The zero point is factory calibrated Further zero calibration is not necessary 5 2 Calibration Span e Connect calibration adapter to the sensor element Connect digital voltmeter to pin Test e Apply test gas O2 150 ml min 1 Bar 14 5 psi Wait two minutes until the signal is stable adjust signal with potentiometer Gain until the signal corresponds to the calculated value see calculation for control voltage At a loss of sensitivity of more than 7096 caused by ageing operational or climatic influences calibration will not be possible any more Then the sensor has to be replaced 6 ee Automatikprodukter EBENEN2. Gn Electrochemical Oxygen Transmitter LO MO Feb 13 5 3 Calculation of Control Span Voltage The control voltage at the pin Test simulates the 4 20 mA signal at a 10 Ohm measuring resistance 160 mV x test gas concentration O vol 6 Control span voltage mV measuingtangeO Wola 40 mV vol Example Measuring range 25 vol 96 Test gas concentration 20 9 vol 96 O Control voltage Signal start 2 V 4 mA 173 7 mV Control voltage Signal start O V 0 mA 67 2 mV 160 mV x 20 9 vol 96 25 vol 96 40 mV 173 7 mV Control voltage 160 mV x O vol Gain calibration 40 mV Measuring range vol 96 Flow rate 150 ml min 20 ml Pressure 1 Bar 10 Test gas Gain calibration O vol 6 with a concentration of 20 9 vol Fig 5 Calibration 7 Automatikprodukter EEE Gn Electrochemical Oxygen Transmitter LO MO Feb 13 6 Inspection and Service Inspection service and calibration of the transmitters should be done by trained technicians and executed at regular intervals We therefore recommend concluding a service contract with Automatikprodukter or one of their authorized partners According to EN 45544 4 inspection and service has to be executed at regular intervals The maximum intervals have to be determined by the person responsible for the gas warning system according to the legal requirements Automatikprodukter recommend
3. Electrochemical Oxygen Transmitter LO MO User Manual Feb 2013 ee Automatikprodukter EBENEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 Table of contents dMECIJEIETABMIIASPCTEIIDEE OS ODIO 000 1005200 tem 3 2 Functional Descriptiori 5 i oorr aeo eno oot nhan nn nuno n orat haha Ra no Reano E ya ER NR ERR dadanasin RSS SEDES RR anne anna 3 3 Installations 4 3 1 Mounting INStRUCH ONS aan oe en a een 4 SAEPE 4 4 Electrical Connection EET 5 4 1 Wiring ConnecH Nna aes rS 5 4 2 Qutput SIENA ae aka aa ne I a BE 5 5 COMMISSIONING ss ernennen Eee E EEE RN Nee ESSERE REREEEN Ye E REER E EE E RENE e eR SEES Ro EEENNR NR SE ESPERE Teer 6 5 1 Calibration Zero Point Output Signal 4 mA asics iniaa Aan aE ia 6 5 2 Calibration Span een me EE 6 5 3 Calculation of Control Span Voltage ccccccccccccescssssesesseeeeeeeeceeeessesesaeeeeeeeeceseeeeeeeaeeeeeseseeseceeaaeaeaeaaesaeeseeeeseeeseea 7 6 Inspection ANG Servite eoes ooo eere enne no Rao PER SERE XY XX KR RR ANESSE EEEREN r STEENIS 8 Gil IAS PECH ON I 8 6 2 Service and E8r lonezin ol em 8 6 3 Exchange of Sensor Elemient e trie bans nn 8 7 Troubleshooting 1 erre oun nenn xeu nu ooo ER rs ae E NI EOTS EKE ISIA ENEE TON 9 7 1 Diagnostics at th
4. arranty does not apply to units that have been altered had attempted repair or been subject to abuse ac cidental or otherwise The warranty also does not apply to units in which the sensor element has been overexposed or gas poisoned The above warranty is in lieu of all other express warranties obligations or liabilities This warranty applies only to the transmitter Automatikprodukter shall not be liable for any incidental or conse quential damages arising out of or related to the use of the O transmitters 12 ee Automatikprodukter EMEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 14 Appendex Enclosure A and 5 14 1 Enclosure Type A Fig 7 Enclosure type A 1500 1800 mm 14 2 Enclosure Type 5 84 mm Mounting Fig 8 Enclosure type 5 d 5mm 1500 1800 mm 13 eee Automatikprodukter EBENEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 14 3 Installation Work Open cover e Fix the enclosure by 2 screws gas inlet always down wards Close cover 14 4 Connection Work Pay attention to the general information section 4 Open cover Insert cable strip it off and connect it Close cover 14 5 Calibration Flow rate 150 ml min 20 ml Pressure 1 Bar 10 Fig 9 Calibration for enclosure types A and 5 15 6 Specifications Physical characteristics BE Enclosure Type A Enclosure material Polycarbonate V2A 1mm mat
5. cording to the corresponding regulations Avoid any influence of external interference by using a shielded cable Recommended cable J Y St Y 2x2x0 8LG 18 AWG maximum resistance 73 0 1000 m 20 8 0 1000 ft When the PCB is mounted it is important to ensure that the wire shields or any bare wires do not short the PCB 4 1 Wiring Connection Open cover of enclosure Insert cable and strip it off Remove triple pole socket board and connect the cable according to the wiring diagram Replug the socket board correctly at the multi pin connector Close the cover il SI 1 2 3 f 9 12 3 Q 2 ata RT Boa EXE NES SA 2 oad Xue Y ac lt Controller Controller Transmitter Transmitter MA 11XX MA 11XX Operation mode 4 20 mA Operation mode 2 10 V Fig 2 Wiring Diagram Fig 3 Electric connection 4 2 Output Signal Operation mode 4 20 mA The transmitter is always current source Only 2 wire connection Operation mode 2 10 V Remove R40 by using a wire cutter Always 3 wire connection Fig 4 Board 5 ee Automatikprodukter EMEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 5 Commissioning Please observe proper handling procedures for test gas bottles and the regulations according to TRGS 220 Prior to calibration the sensor element must be powered and fully stabilized for at least 1 hour without interruption
6. ded Product Application The transmitters are designed and manufactured for control applications and air quality compliance in commercial buildings and manufacturing plants 13 2 Installers Responsibilities It is the installer s responsibility to ensure that all transmitters are installed in compliance with all national and local codes and OSHA requirements Installation should be implemented only by technicians familiar with proper installa tion techniques and with codes standards and proper safety procedures for control installations and the latest edi tion of the National Electrical Code ANSI NFPA70 It is also essential to follow strictly all instructions as provided in the user manual 13 3 Maintenance It is recommended to check the transmitter regularly Due to regular maintenance any performance deviations may easily be corrected Re calibration and part replacement in the field may be implemented by a qualified technician and with the appropriate tools Alternatively the easily removable plug in transmitter card with the sensor may be returned for service to Automatikprodukter 13 4 Limited Warranty Automatikprodukter warrants the transmitters for a period of one 1 year from the date of shipment against defects in material or workmanship Should any evidence of defects in material or workmanship occur during the warranty period Automatikprodukter will repair or replace the product at their own discretion without charge This w
7. dukter EMEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 3 Installation 3 1 Mounting Instructions When choosing the mounting site please pay attention to the following The specific weight of oxygen O is higher than that of air factor 1 10 Recommended mounting height is 1 5 m 5 feet to 1 8 m 6 feet above floor for combustial applications e Consider the ventilation conditions Do not mount the transmitter in the centre of the airflow air passages suction holes e Mount the transmitter at a location with minimum vibration and minimum variation in temperature avoid direct sunlight Avoid locations where water oil etc may influence proper operation and where mechanical damage might be possible Provide adequate space around the sensor for maintenance and calibration work 3 2 Installation Open cover of enclosure e Fix the enclosure by the 2 screws gas inlet to the ground Replace the cover Mounting 1500 1800 mm Gas inlet MS Dow yc ET u Le Gas inlet Prior to commissioning cut protective cap carefully off with a knife Le Gas inlet DOWN 4 ee Automatikprodukter ENEEEEM Gn Electrochemical Oxygen Transmitter LO MO Feb 13 4 Electrical Connection Installation of the electrical wiring should only be performed by a trained specialist according to the connection diagram without any power applied to conductors and ac
8. e transmltker eiie testi aeta retis o aa nn HER estes hai 9 CE rCEI DRIED E 9 9 Specifications M 10 10 Calibration Adapter e Eee 11 TUS pare Parts Lists D 11 12 Part DiISPOSAl Mee w vR 11 13 Notes and General Information 2 oriri cccceseesssdscesscccsasecdacseeessccccaseessssccasscccacaessdsssescocbasstessss 12 13 1 Intended Product Application ciiin nennen nennen nen en nena nenas ias sanas ss sa sese nna i nsns 12 13 2 Installers Responsibilities adsense ar a RI sa ah E CNN Oed 12 ESSET 12 13 4 Limited Wartapty s toe ettet eer ren aee na erbe nik ee exa iin ben neben ERES 12 14 Appendex Enclosure A aid 5 2 eere ee Reese been E EN E ORE EE ERENEN KNEE EREP S 14 14 1 Enel s re Type us area rn GE B REO E TE NP TRIER GN E EI EHREEROREE URS 14 14 2 Enclosure Type Sr se ee tope dvo tSt eim devises lei 14 14 3 Installation WOK ers rho er rho end Y pente eer yh NE ecd o eere d euer pone eae nes ee 15 144 CONMECHON i fold ORDER 15 14 5 Calibration eterne terre ek peser rene ue pes NTE eee e ape VERE bel d a K S CH YER EN ENAN e Ee Ya d FN Elaine 15 TAG Spec
9. ectrochemical Oxygen Transmitter LO MO Feb 13 7 Troubleshooting 7 1 Diagnostics at the transmitter age 0 V connected correctly block 1 and 2 16 28 VDC ee re rectly Output signal lt 3 mA and or control Transmitter not calibrated Calibrate transmitter voltage lt 30 mV Control voltage doesn t reach the Sensor sensitivity lt 30 Replace sensor element calculated value If faults cannot be eliminated by the above mentioned actions or if other faults not described in this table occur please contact the service 8 Cross sensitivity Data See Specifications 9 es Automatikprodukter EBENEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 9 Specifications Electrical o Sensor Performance Cd lt 4 reading year Cross sensitivity Reaction vol O Carbon dioxide CO pU Type of Control 4 20 mA load Q 500 O 2 10 V load 2 50k OQ Proportional overload and short circuit protected Analog output signal Humidity 0 to 90 RH non condensing Dimensions WxHxD mm Mounting Wall mounting pillar mounting Cable entry 1xM 20 Wire connection Screw type terminal min 24 AWG 0 25 mm max 14 AWG 2 5 mm Directives EMCDiretive2004 10 EEC S EEE lt a 10 ee Automatikprodukter ENEEENM Gn Electrochemical Oxygen Transmitter LO MO Feb 13 10 Calibration Adapter Enclosure Type A and 5 Type Calibr set Fig 6 Calibrat
10. erial 1 4301 Flammability UL 94 V2 REIFE Enclosure colour RAL 7032 light grey Natural brushed Dimensions W x H x D 14 ee Automatikprodukter EMEN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 15 7 Exchange of Sensor Element Sensor should always be exchanged without power applied remove the PCB at the socket board Unplug old sensor element from the PCB plug in new original sensor element Plug in the PCB at the socket board correctly See fig 3 Calibrate the sensor see section 5 15 8 Opening of the Enclosure Type 5 L Latching points of cover opening Opening tool L L L L L LI L LI i L L i Side for gt LI I a L L L i LI L LI LI L L Direction of cover when opening Opening Fig 10 Opening of the enclosure type 5 15 ee Auomatkprodukter EBENEN
11. ification Son aai EE RETE ET 15 14 7 Exchange of Sensor Elemiernt ia iet er eee ne el ee 16 14 8 Opening of the Enclosure Type 5 sssesseeseseseeee eene nennen nenhnnnn nnns n esse AE trita ansa sas ases aR SERR TANE REEERE 16 2 ee Auomatkprodukter EN Gn Electrochemical Oxygen Transmitter LO MO Feb 13 1 General overview The O analog transmitter with 4 20 mA 2 10 V output is used for the continuous monitoring to detect the pres ence of oxygen concentrations in the ambient air Main application ranges are laboratories food production etc with the possibility to change the oxygen content The intended sites within the ambient conditions defined in the Specifications are all areas being directly connected to the public low voltage supply e g residential commercial and industrial ranges as well as small enterprises ac cording to EN50 082 The transmitter must not be used in potentially explosive atmospheres 2 Functional Description The chemical process of the measurement is based on the principle of a galvanic micro fuel cell The gas or the am bient air to be monitored diffuses through a membrane filter into the measuring cell towards the cathode Cathode and anode are electrically contacted therefore due to the oxidation there is an electric current proportional to the oxygen partial pressure This current signal is linear to the oxygen concentration The current is evaluated by the connected amp
12. ion Adapter 11 Spare Parts List Sense09 1195 PCB without sensor p Connector triple pole MA 25 600 2353 0 12 Part Disposal Since August 2005 there are EC wide directives defined in the EC Directive 2002 96 EC and in national codes con cerning the waste electrical and electronic equipment and also regarding this device For private households there are special collecting and recycling possibilities For this device isn t registered for the use in private households it mustn t be disposed this way You can send it back to your national sales organisation for disposal If there are any questions concerning disposal please contact your national sales organisation Outside the EC you have to consider the corresponding directives 11 ee Automatikprodukter ENEEEENM Gn Electrochemical Oxygen Transmitter LO MO Feb 13 13 Notes and General Information It is important to read this user manual thoroughly and clearly in order to understand the information and instruc tions The O transmitters must be used within product specification capabilities The appropriate operating and maintenance instructions and recommendations must be followed Due to on going product development Automatikprodukter reserves the right to change specifications without notice The information contained herein is based upon data considered to be accurate However no guarantee is expressed or implied regarding the accuracy of this data 13 1 Inten
13. lifier and transformed into a linear output signal The diffusion through the membrane and the thin electrolytic coat are complex temperature dependant electro chemical processes influencing the ion current of the sensor Therefore the sensor is temperature compensated within the specified temperature range The electrolyte the catholyte and the composition of the anode are designed in a way that the oxygen diffusing towards the cathode is electrochemically reduced The electrolyte is used up by the electrochemical process So the sensor life time is limited to two years Calibration during sensor life time is not necessary There is a small quantity of corrosive liquid in the sensor element If in case of damage persons or objects touch the liquid you have to clean the affected areas as fast and carefully as possible with tap water Out of use sen sors must be disposed in the same way as batteries Silicon leads to an undesirable chemical reaction in the sensor and so causes a drift of the zero point to the positive side Prolonged exposure leads to an important reduction of the sensor sensibility After exposure to silicone the sensor has to be replaced in order to provide for the functional reliability furthermore Electronics can be destroyed by static electricity Therefore do not touch the equipment without a wrist strap connected to ground or without standing on a conductive floor acc to EN 61340 5 1 3 ee Automatikpro
14. s checking the O transmitter every three months and maintaining it every 12 months If different intervals are indicated always consider the shortest interval Inspections and services must be documented The date for the next maintenance has to be affixed to the transmitter 6 1 Inspection The O Transmitter should be controlled regularly by a competent person according to EN 45544 4 The following has to be checked in particular e Maintenance calibration interval not exceeded e Visual inspection of the transmitter including cable for damage etc Remove dust deposits especially at the gas inlet For enclosure type A The filter at the gas inlet has to be replaced if extremely dirty 6 2 Service and Calibration When performing the maintenance you have to do the calibration and the functional test in addition to the inspec tion Calibration See section 5 e Functional test Check the output signal at the test pins during calibration 6 3 Exchange of Sensor Element Sensor should always be exchanged without power applied remove the socket board Unscrew the two fixing bolts e Remove the board with the sensor upwards out of the sensor cup Unplug old sensor element from the PCB plug in new original sensor element e Plug inthe PCB with the sensor into sensor cup and tighten it by the screws Plugin the socket board correctly See fig 3 e Calibrate the sensor see section 5 8 ee A gomatkprodukter EMEN Gn El
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