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OxyDetect Oxygen Deficiency Gas Detector

Appendix

05311001B / Revision 4

63

11 SPARES

Do not use spares other than those specified below, and do not
attempt to carry out any maintenance procedures other than
those specified in this manual. If you do, you can damage the
instrument and invalidate any warranty.

Ne  pas  utiliser  de  pièces  de  rechange  autres  que  celles
spécifiées  ci-dessous,  et  ne  tentez  pas  d'effectuer  les
procédures  de  maintenance  autres  que  celles  spécifiées  dans
ce  manuel.  Si  vous  le  faites,  vous  risquez  d'endommager
l'appareil et annuler la garantie.

The standard spares available for the instrument are shown below. You can order
these spares from Servomex or your Servomex agent.

Spare

Part Number

Spare calibration cap assembly (inclusive of calibration cap, O-
ring and tube)

S5311990

Spare fuse pack (5 off T 2A / 250 V size: 20 x 5 mm)

S5311902

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67
68
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70
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Summary of Contents for Servomex 05311B1

Page 1: ...Part Number 05311001B Revision 4 Language UK English SERVOMEX OxyDetect OPERATOR MANUAL ...

Page 2: ...nsible for the consequences and may invalidate any warranty Servomex will accept no liability for unauthorised modifications to Servomex supplied equipment Servomex has paid particular attention to Health Safety throughout the manual Where special precautions need to be taken due to the nature of the equipment or product an appropriate safety icon and warning message is shown Special attention sho...

Page 3: ...UNPACK THE INSTRUMENT 14 5 INSTRUMENT USER INTERFACE 15 5 1 Introduction 15 5 2 Start up and measurement screens 15 5 3 Soft key legends 16 5 4 System and measurement status icons 17 5 5 Scroll bars 17 5 6 Menu options screens and password protection 17 5 7 The menu screen 18 5 8 The settings screen 19 5 9 The information screen 20 5 10 Editing on screen data 20 6 INSTALLATION AND SET UP 22 6 1 Me...

Page 4: ...tus 47 7 CALIBRATION 48 7 1 Connecting the calibration gas cap 50 7 2 Manual calibration 51 8 ROUTINE MAINTENANCE 53 8 1 Inspecting the calibration cap 53 8 2 Checking the mA output 53 8 3 Checking the relays 53 8 4 Cleaning the instrument 54 8 5 Preventative maintenance 54 9 FAULT FINDING 56 9 1 Fault maintenance required and SIP statuses 56 9 1 1 Status definitions 56 9 1 2 Status annunciations ...

Page 5: ...nsducer data mapping 68 A3 9 System Fault Mapping 70 A3 10 Transducer fault and alarm mapping 71 A3 11 System set up mapping 73 A3 12 Transducer set up mapping 74 A3 13 System control 75 A3 14 Transducer control 75 A4 CONFIGURING THE MODBUS PARAMETERS OPTION 77 A4 1 TCP Ethernet Communications parameters 77 A5 CROSS INTERFERENCE OFFSETS 79 A6 END USER NOTES 83 This manual is copyright and no part ...

Page 6: ...this manual as WARNINGs and CAUTIONs which are used as follows Warnings highlight specific hazards which if not taken into account may result in personal injury or death Avertissements soulignent les dangers spécifiques qui si pas pris en compte peut entraîner des blessures ou la mort Cautions highlight hazards which if not taken into account can result in damage to the instrument or to other equi...

Page 7: ... indoor working environments such as laboratories workshops or analyser shelters Gas sample measurements are shown on the instrument display and can be output as a 4 20mA milliamp mA signal and or gas sample alarm levels indicted by relay status to a gas detection management system The instrument requires little routine maintenance other than calibration which is essential for the accuracy of the ...

Page 8: ... in concentrations high enough to cause corrosion to normal industrial appliances or where specialised coatings materials or finishes would normally be specified to avoid corrosion L instrument ne convient pas pour les atmosphères corrosives ces atmosphères gaz et les vapeurs sont présents dans des concentrations suffisamment élevées pour provoquer la corrosion des appareils industriels ou normale...

Page 9: ...4 x mounting holes for M6 fixings 2 Display 3 4 x Gland entries holes diameter 22mm 4 Fault LED amber 5 Measurement alarm LED red 6 Chassis earth 7 Enclosure breather do not block 8 Soft key 4 from left to right soft keys 1 2 3 and 4 9 Senor cover and calibration cap mounting nozzle Figure 1 Front of Instrument 1 2 3 4 5 6 7 8 9 ...

Page 10: ...age de mesure de l oxygène pour les versions en zone dangereuse est 0 à 21 Exposure to some chemicals may degrade the sealing properties of materials used in the following devices K1 Relay from Customer Interface Board Sealed Device K2 Relay from Customer Interface Board Sealed Device K3 Relay from Customer Interface Board Sealed Device L exposition à certains produits chimiques mai dégrader la fe...

Page 11: ...hère explosive Do not open the enclosure if the instrument is energized Ne pas ouvrir sous tension It is a condition of certification that the unit must be installed following the appropriate national or international legislation or codes of practice In particular you must make sure that the correct glands are fitted to cable entries and that you do not compromise the weatherproofing of the enclos...

Page 12: ...count during installation L équipement est incapable de passer le test de rigidité diélectrique prescrite par les normes et si cela doit être pris en compte lors de l installation The equipment shall be used in an area not exceeding Pollution Degree 2 as defined in IEC 60664 1 L équipement doit être utilisé dans une zone ne dépassant pas 2 degré de pollution tel que défini dans la norme CEI 60664 ...

Page 13: ...iency Gas Detector 8 05311001B Revision 4 1 6 1 Label locations Figure 2 OxyDetect unit label locations OxyDetect unit Certification label fitted on hazardous location versions only See Figure 4 Figure 5 OxyDetect unit rating serial number label Figure 3 ...

Page 14: ...x ic ec nC IIC T4 Gc Ambient Temperature range 5 C to 45 C Certification number ATEX Baseefa15ATEX0165X Certification number IECEx IECEx BAS 15 0112X Conditions of safe use ATEX IECEx 1 Possible electrostatic risk clean only with a damp cloth 2 The equipment is not capable of passing the dielectric strength test prescribed by the standards and so this must be taken into account during installation...

Page 15: ...1 3 North America Coding Class I Division 2 Groups A D T4 Class I Zone 2 Group IIC T4 Ambient Temperature range 5 C to 45 C SGS Contract No 710216 SGS Certificate Reference SGSNA 19 SUW 00043 2 1 4 Label information Figure 3 OxyDetect Rating Label Figure 4 OxyDetect ATEX IECEx Certification label ...

Page 16: ...OxyDetect Oxygen Deficiency Gas Detector 2 Certification information 05311001B Revision 4 11 Figure 5 OxyDetect North America CL1 Div 2 Certification label ...

Page 17: ...et les sections suivantes du manuel 3 1 General Dimensions length x height x width 210 x 200 x 106 mm 8 3 x 7 9 x 4 2 Mass 2 5 kg 5 5lbs 3 2 Environmental limits Equipment is suitable for indoor use only Ambient temperature range Operational Hazardous location certified 5 C to 45 C 41 F to 113 F 5 C to 45 C 23 F to 113 F Storage 5 C to 50 C 23 F to 122 F Operating pressure range Ambient 80 to 110 ...

Page 18: ...de telle sorte qu elle réalise IP66 protection d entrée Cependant dans l utilisation opérationnelle examen doit être fait pour la protection de l ouverture du capteur qui est évalué à IP40 Par conséquent l instrument ne doit pas être exposé à un lavage avec jets de liquide L instrument est destiné à être utilisé en intérieur If the ambient temperature falls below 0 C 32 F the instrument should be ...

Page 19: ...y item is damaged immediately contact Servomex or your local Servomex agent 3 Check that you have received all of the items that you ordered If any item is missing immediately contact Servomex or your local Servomex agent 4 If you do not intend to use the instrument immediately Refit any protective plastic covers Place the instrument and any other equipment supplied back in its protective packagin...

Page 20: ... the instrument a start up screen is displayed while the instrument carries out a self test The start up screen shows the Servomex name a self test time elapsed remaining indicator and messages identifying the tasks being carried out as part of the self test The screen will initially display the System Check task message The measurement screen is then displayed as shown in Figure 6 below Figure 6 ...

Page 21: ...st legend corresponds to the function of soft key 1 the second legend corresponds to the function of soft key 2 and so on On the measurement screen the soft key functions are as follows Legend Meaning Function when soft key pressed Menu Displays the menu screen see Section 5 Calibrate Displays the calibrate screen see Sections 7 Alarm Displays the alarm option screen see Section 6 5 1 None no effe...

Page 22: ... there may be more options available than can be shown on the screen and you have to scroll down the screen to view all of the options this is identified by a scroll bar at the right hand side of the screen The height of the wide part of the scroll bar gives an indication of what proportion of all the options are currently shown on the screen As you scroll up or down the options using the and soft...

Page 23: ...st soft key is pressed After this the password becomes inactive you must re enter the password to access password protected options screens again To change the passwords see Section 6 3 3 5 7 The menu screen The menu screen provides access to other screens in the menu structure and is displayed by pressing the soft key when the measurement screen is displayed Figure 7 The menu screen Use the and s...

Page 24: ...required screen option then press the soft key to display the selected screen as shown below Figure 8 The settings screen Screen Use refer to section Password Changing the password 6 3 3 Clock Setting the clock time and or date 6 3 6 Regional Changing regional settings language and so on 6 3 7 Backlight Adjusting the backlight timer duration 6 3 5 Contrast Adjusting the contrast of the screen 6 3 ...

Page 25: ...the information shown on the screen press the soft key to display the settings screen again or press and hold the soft key to show the measurement screen again You may be asked to provide the information from this screen to the Servomex support team for example as an aid to fault diagnosis 5 10 Editing on screen data A common method is used for editing data shown on all of the different screens Wh...

Page 26: ...t by 1 Moves the cursor left to the previous digit Moves the cursor right to the next digit Note that the figures above and below the highlighted digit show the digits above and below the currently highlighted value When the last digit is highlighted press the soft key to enter the new data When editing numerical values the decimal point appears between digits 9 and 0 ...

Page 27: ...nstrument Gaz ont des densités différentes et peuvent monter ou descendre dans l air ambiant L appareil doit être installé dans un endroit approprié par rapport au danger de gaz Une évaluation des risques appropriée doit être effectuée avant l installation de l instrument Do not install the instrument where it is subjected to high levels of vibration or large variations in ambient temperature as t...

Page 28: ...r may be fully opened after installation 6 2 Electrical Installation 6 2 1 Electrical Safety Obey the safety instructions given below when you install the instrument if you do not the instrument warranty may be invalidated the instrument may not operate correctly or it may be damaged Respectez les consignes de sécurité indiquées ci dessous lorsque vous installez l instrument si vous ne faites pas ...

Page 29: ...monitor This must also incorporate a suitable fuse or over current protection device set to or rated at no more than 3A To comply with the relevant safety requirements this power disconnection device must be approved to UL 489 for equipment used in the USA CSA C22 2 No 5 1 for equipment used in Canada IEC 60497 for equipment used in the EU and the rest of the world Le OxyDetect ne tient pas compte...

Page 30: ...ility rating of V 1 or better and maintain the IP40 level of environmental protection Pour répondre à IEC61010 les glandes câbles utilisés avec le Moniteur d oxygène de 05311 OxyDetect doit Être faite de métal ou d avoir un indice d inflammabilité de V 1 ou mieux Être conçus pour des températures de 5 C à 45 C 41 F à 113 F Être sélectionné pour fournir le câble décharge de traction L efficacité de...

Page 31: ...wer consumption 3 VA mA output Maximum load resistance 1 K Ohms Isolation voltage to earth 500 V dc or ac Output range 0 25 Oxygen Recommended mA range 4 to 20 mA Recommended Fault indication 0 mA Jam low on fault condition Interface Relays Configuration Maximum Rating Minimum Load 3 SPCO relay contacts allocated to Fault O2 23 Measurement alarm 1 Measurement alarm 2 250 Vac 3 A or 28 Vdc 1 A non ...

Page 32: ...ly be manually reset after the hazard has been assessed and eliminated Il est fortement recommandé que les systèmes de verrouillage surveillance de l utilisation des alarmes qui peuvent être réinitialisés que manuellement après le risque a été évalué et éliminé The optional Modbus TCPIP communications output is not to be used as the primary safety indication of measured oxygen levels to the gas al...

Page 33: ...the electrical supply voltage shown on the rating label is correct for the available electrical supply Do not install the equipment if the incorrect voltage is shown and contact Servomex or your local Servomex agent immediately Assurez vous que la tension d alimentation électrique indiqué sur l étiquette de note est correcte pour l alimentation électrique disponible Ne pas installer l appareil si ...

Page 34: ... est convenablement approuvé pour l environnement dans lequel il doit être installé et utilisé The OxyDetect milliamp and MODBUS screens are connected to the instrument enclosure by design In order to prevent large ground loops the 24Vdc PSU should be installed as close as possible to the OxyDetect and good electrical installation practice followed L alimentation OxyDetect 0V TB1 2 est relié à l e...

Page 35: ...local requirements Cable external diameter Within the range specified for the selected cable gland Conductors 0 2 to 2 5mm2 26 to 12 AWG Strip length 7mm Terminal screws 0 4 to 0 5 Nm tightening torque Screwdriver blade 0 6 x 3 5 PH 0 PZ 0 Table 2 TB1 dc power supply connection cable specifications 6 2 4 Analogue output connections The terminals of all equipment connected to the OxyDetect by the u...

Page 36: ...Screen TB2 2 mA TB2 3 mA Table 3 Analogue Output connections TB2 mA output connection cable specifications Cable type Screened Number of cores required 2 plus screen Rating temperature 5 C to 45 C 41 F to 113 F Flammability rating VW 1 Approvals Relevant to local requirements Cable external diameter Within the range specified for the selected cable gland Conductors 0 2 to 2 5mm2 26 to 12 AWG Strip...

Page 37: ...remove the polycarbonate protective cover to access the terminal block by releasing the M5 x 20mm screw On completion of electrical connections the polycarbonate cover should be replaced The screw should be tightened to a torque of 0 8Nm 2 TB3 7 9 are connected during a fault condition TB3 8 9 are connected when no fault is present During a power failure the fault relay will be in a fault conditio...

Page 38: ...gital communications terminals are separated from the analyser main circuit by reinforced insulation The terminals must only be connected to circuits that are themselves separated from mains voltages by an isolation method that provides at least this level of protection Les terminaux de communication numériques sont séparés du circuit principal analyseur par une isolation renforcée Les bornes ne d...

Page 39: ...r to clear the initial date time invalid fault condition See section 6 3 6 When you switch on the electrical supply to the instrument a start up screen is first displayed see Section 5 2 and then the measurement screen Figure 6 is displayed When the measurement screen is displayed you can set up the instrument as described below 6 3 1 Selecting the security level and password s You can configure t...

Page 40: ... security level As supplied the security level is set to high the supervisor password is set to 2000 and the operator password is set to 1000 Before the instrument is used for sample measurement we recommend that you select the security level low standard or high see Section 5 6 most suitable for the way in which the instrument will be used by you and or your personnel Use the following procedure ...

Page 41: ...istance Use the following procedure to change the supervisor and operator passwords 1 Select Settings Password 2 To change the supervisor password press the soft key then enter the new password use the editing method described in Section 5 10 3 To change the operator password press the soft key to display the edit operator password screen press the soft key then enter the new password Press the so...

Page 42: ...t is the backlight remains on for the backlight time after the last soft key press Note The OxyDetect is factory configured for the backlight to remain on continuously 000 Should the end user require the backlight to switch off after a timed period of inactivity please follow the procedure as described below To adjust the backlight time 1 Select Settings Backlight 2 Change the backlight time durat...

Page 43: ...d time as described in Section 5 10 Figure 18 The clock 9time screen 3 Edit the displayed date as described in Section 5 10 4 The date format can be set to your regional preference day month year or month day year refer to Section 6 3 7 Figure 19 The clock date screen 6 3 7 Changing regional settings You can configure the following instrument regional settings so that the information shown on the ...

Page 44: ...is shown on the measurement screen see Figure 6 is shown if range 1 is selected is shown if range 2 is selected The mA output can be selected as 0 to 20 mA where 0 mA represents the lowest sample measurement and 20 mA represents the highest sample measurement in the range you have specified 4 to 20 mA where 4 mA represents the lowest sample measurement and 20 mA represents the highest sample measu...

Page 45: ...ow level The range 1 lowest sample measurement Range 1 high level The range 1 highest sample measurement span Range 2 low level The range 2 lowest sample measurement Range 2 high level The range 2 highest sample measurement span During calibration The selected option determines how the mA output will operate during calibration Freeze As soon as the calibration screen is displayed the mA output wil...

Page 46: ...A which indicates a the Range low level down to a minimum of 3 8 mA where an output between 3 8 mA and 4 mA indicates a gas concentration below the range low level The mA Jam condition should be set to low so that the monitoring system can detect instrument faults La condition mA Jam devrait être réglé à basse afin que le système de surveillance permet de détecter les défauts d instrument 6 4 3 Se...

Page 47: ... Freeze or Follow Figure 24 The during calibration screen 6 You can then select the Jam condition to High Low or None Figure 25 The jam condition screen 7 You can then select the range that you would like to use 0 20 mA or 4 20 mA Figure 26 The mA output range screen 8 You can then select the under range value An under range setting of 4 mA means there is effectively no under range ...

Page 48: ...ol monitoring equipment connected to the instrument to monitor the actual output value Use the and soft keys to increase or decrease the actual output value until your control monitoring equipment indicates 20 mA output 4 When the mA output has been correctly calibrated press the soft key the mA output service screen Figure 28 will then be displayed again The actual mA output value is controlled f...

Page 49: ...tivated if the alarm Follow option is set to yes The OxyDetect alarm levels are pre set in the factory as follows ALARM 1 Low alarm 19 5 Non latching hysteresis 0 5 ALARM 2 Low alarm 18 0 Latching hysteresis 0 5 Refer to Appendix 13A2 if settings are changed While a measurement alarm condition is activated An alarm icon is shown on the measurement screen see Section 5 2 The number 1 or 2 in the ic...

Page 50: ...ings using the method described in Section 5 10 Latching Section 6 5 2 Level sets the gas concentration level at which the alarm is to trigger Hysteresis Section 6 5 3 The measurement alarm s has a Follow option If the Follow option is set to No the alarm will be inhibited during calibration mode If the Follow option is set to Yes the alarm will not be inhibited during calibration mode 1 Select Fo...

Page 51: ...atching Once the alarm condition has been activated the alarm condition remains activated only until a subsequent sample measurement which would not trigger the alarm is made The alarm condition is then deactivated When necessary use the following procedure to unlatch any latched measurement alarm s 1 On the measurement screen press the soft key the alarm option screen Figure 34 will then be displ...

Page 52: ...ated until a sample measurement is 19 5 If a high alarm has an alarm level of 23 and a hysteresis level of 1 the alarm will be activated when a sample measurement is 23 and the alarm will not be deactivated until a sample measurement is 22 6 5 4 Viewing the measurement alarm status 1 Select View 2 In the alarm status screen shown in Figure 34 both measurement alarms are shown as Inactive that is e...

Page 53: ...r 1 hour and calibrated then calibrated after one week of operation and then routinely calibrated every three months Depending on site experience this final routine interval can be extended to a maximum of six months Pendant la première semaine de l opération de mesure de l instrument peut dériver légèrement plus que dans les semaines suivantes Il est recommandé qu au démarrage initial de l instru...

Page 54: ...ument doit être étalonné si elle est exposée aux fluctuations de température de plus de 10 C 18 C It is recommended the instrument is recalibrated if it suffers a shock such as an accidental knock or impact Il est recommandé de recalibrer l instrument s il subit un choc tel qu un choc ou un impact accidentel Calibration gas flow rate 300ml min 50ml min High calibration set point Supplied via the c...

Page 55: ...ment suffisamment bien aéré pour éviter l accumulation de gaz asphyxiant Veiller à ce que les tuyaux que vous connectez à l instrument sont acheminés pour qu ils ne présentent pas de danger pour les personnes Always remove the calibration cap after use to leave the front nozzle free of any restriction Failure to remove the calibration cap will impair the instruments function and significantly incr...

Page 56: ...n and locate on the o ring grove It should be firmly in place after fitting 3 To remove the calibration cap grip firmly around the knurled bezel and twist and pull gently until it is removed Do not remove the cap by pulling on the tube The calibration cap may be stiff and slightly difficult to remove when first fitted This is normal and will ease with use You must switch on the electrical supply a...

Page 57: ...low calibration gas Hi high calibration gas 3 Press the soft key The Calibrate target value screen will then be shown see Figure 37 identifying the target value and the current reading Figure 37 The calibrate target value screen 4 If the target value is not correct for the calibration gas which you are using change the target value to the required value use the edit method shown in Section 5 10 5 ...

Page 58: ...ing No will then be displayed Select Yes to apply the override Figure 38 The mA override screen 5 The mA output will now be set to the override value you have selected Use your control monitoring equipment connected to the instrument to check that the output is correct The milliamp output freezes at the override value as long as the Override screen is displayed As soon as another screen is display...

Page 59: ...al state as long as the Override action screen is displayed As soon as another screen is displayed the relay signal outputs will be updated to reflect the corresponding alarm fault and range states 8 4 Cleaning the instrument When necessary use a damp but not wet cloth to wipe clean the outer surfaces of the instrument to prevent the entry of dust or other particulates into the interior of the ins...

Page 60: ...ir are complete you will be provided with a full SERVOSURE report Note that you will always be informed in advance if any repairs or new parts are required for your instrument Contact Servomex or your local Servomex agent to arrange for a preventative maintenance contract ...

Page 61: ...ement screen only see Figure 6 Message Measurement screen icon Recommended actions Calibration fault Recalibrate both low and high as described in Section 7 also check calibration gas has been allowed to flow through the instrument for the recommended time If the fault persists contact Servomex or your local Servomex agent for assistance Code fault Contact Servomex or your local Servomex agent for...

Page 62: ...cted to the instrument is not open circuit Turn the instrument off and then turn it on again If the fault persists contact Servomex or your local Servomex agent for assistance mA not detected Contact Servomex or your local Servomex agent for assistance Relays not detected Contact Servomex or your local Servomex agent for assistance mA reset Contact Servomex or your local Servomex agent for assista...

Page 63: ...the transducer full scale range Recalibrate both low and high as described in Section 7 If this does not clear the fault turn the instrument off and then turn it on again If the fault message is then displayed again contact Servomex or your local Servomex agent for assistance Tx not detected Contact Servomex or your local Servomex agent for assistance 9 2 Viewing messages 9 2 1 Active messages 1 S...

Page 64: ...rument fault finding refer to the table on the following pages If you have read through the table and still cannot rectify a fault or cannot identify the cause of a fault contact Servomex or your local Servomex agent for assistance Fault symptom Recommended actions The fault LED is on Check any current fault messages see Section 9 2 and carry out the recommended actions see Section 9 1 If there ar...

Page 65: ...rement response is slow Check that the sample gas inlet is not blocked Instrument measurements are unstable Check that the instrument is not being subjected to high levels of vibration and ensure there are no leaks The instrument will not calibrate Check that the correct low and high calibration gases are being used The instrument will not switch on Check that the external supply is switched on an...

Page 66: ...is at 0 or 21 5 mA If you have configured the mA output to jam high or jam low check whether a fault condition exists Otherwise contact Servomex or your local Servomex agent for assistance The milliamp output is not as expected Ensure that the electrical cabling connected to the instrument is not open circuit Check that the mA output is calibrated correctly see Section 6 4 4 Check that you have se...

Page 67: ...ry area Do not subject it to excessively hot cold or humid conditions see Section 3 2 10 2 Disposal Dispose of the instrument and any associated equipment safely and in accordance with all your local and national safety and environmental requirements Refer to Appendix 12 where WEEE directive is applicable The instrument is not suitable for disposal in municipal waste streams such as landfill sites...

Page 68: ...èces de rechange autres que celles spécifiées ci dessous et ne tentez pas d effectuer les procédures de maintenance autres que celles spécifiées dans ce manuel Si vous le faites vous risquez d endommager l appareil et annuler la garantie The standard spares available for the instrument are shown below You can order these spares from Servomex or your Servomex agent Spare Part Number Spare calibrati...

Page 69: ...ic Equipment WEEE The analyser is not intended for disposal in a municipal waste stream but shall be submitted for material recovery and recycling in accordance with the local regulations which implement the WEEE Directive For additional information and advice on the disposal of the analyser in accordance with the requirements of the WEEE Directive contact Servomex or your local Servomex agent If ...

Page 70: ...0 to 21 O2 Hazardous area installations Intrinsic error accuracy Response time T10 Response time T63 Response time T90 0 2 O2 6 seconds 30 seconds 75 seconds Zero drift per month 0 2 O2 Ambient pressure effects 0 04 reading per 1 change in ambient pressure Zero temperature coefficient 0 5 O2 per 10 C An additional error of up to 0 2 O2 may be observed at some frequencies under the influence of rad...

Page 71: ... in section 6 If adjustments are made they should be noted in the column space provided for future reference Factory set parameters OxyDetect serial number Installation location Measurement alarm 1 Factory Setting As Installed Mode Low Latching No Level 19 5 Hysteresis 0 5 Measurement alarm 2 Factory Setting As Installed Mode Low Latching Yes Level 18 0 Hysteresis 0 5 Milliamp output Factory Setti...

Page 72: ...ding registers Read settings 04 Read input registers Read measurements units etc 05 Write single coil Change modes perform calibration etc 06 Write single register Change single setting 08 Sub Function 00 Return query data Diagnostic to test communications 16 Write multiple registers Change multiple settings A3 4 Exception codes If an error should occur while processing a message one of the follow...

Page 73: ...its of data Since a Modbus register holds 16 bits it takes 2 registers to represent a floating point number We default to having the most significant word of the float bits 16 31 in the first register and the least significant word bits 0 15 in the next register This order can be reversed by setting a coil in the system control mapping Appendix A3 13 A3 7 System data mapping Read only access to sy...

Page 74: ...the measurement display Floating point number 103 104 Filtered measurement Basic measurement filtered Floating point number 105 106 Pressure compensated measurement Filtered and pressure compensated measurement Floating point number 107 108 PMR Primary measurement range 109 Warming state 0 not warming 1 warming 110 112 Formula Gas formula ASCII text 5 characters max terminated by a zero 113 116 Un...

Page 75: ... fault maintenance required and service in progress faults provide a summary of the other states and can only be off or on The registers are assigned as follows Register Name Comments 1001 Fault If any system fault exists 1002 Maintenance required If any system maintenance required status exists 1003 Service in progress If any system service in progress status exists 1004 Charging time out The bat...

Page 76: ...e a summary of the other states and can only be off or on The registers are assigned as follows Register Name Comments 1101 1200 Transducer 1 Measurements and data for transducer 1 Each input within the block for transducer 1 is assigned as follows Register Name Comments 1101 Alarm 1 Alarm 1 is active or latched 1102 Alarm 2 Alarm 2 is active or latched 1103 Fault If any transducer fault exists 11...

Page 77: ...set A time out occurred on the milliamp card 1124 Volt fault Hardware fault detected 1125 Volt not detected Card missing or the incorrect type has been fitted 1126 Volt reset A time out occurred on the volt card 1127 Pressure calibration Pressure needs calibrating 1128 Pressure fail Hardware fault detected 1129 Pressure low Pressure low fault 1130 Pressure high Pressure high fault 1131 Relay not d...

Page 78: ...h flow alarm level 1146 Flow temperature fault Flow hardware has a temperature fault 1147 Flow cal high diff Zero and normal flow calibration points are too far apart 1148 Flow cal low diff Zero and normal flow calibration points are too close together 1149 Transducer error Transducer error 1150 Temperature fault Temperature fault A3 11 System set up mapping System data will be available with read...

Page 79: ...lows Register Name Comments 101 200 Transducer 1 Transducer 1 related data The following table shows the assignment for transducer 1 Each register provides 2 bytes of data Register Name Comments Analogue Output 101 102 Range 1 low Float 103 104 Range 1 high Float 105 106 Range 2 low Float 107 108 Range 2 high Float 109 Range mode 0 range 1 1 range 2 2 auto range 110 Freeze 0 Follow 1 Freeze 111 Ja...

Page 80: ...ation Coil Name Comments 1 Floating point order Changes the order of the Modbus registers when dealing with 32 bit floating point numbers 0 big endian e g 40001 high word 40002 low word default 1 little endian e g 40001 low word 40002 high word 2 User interface busy 0 idle on main screen 1 busy user interface is in use Write 1 to stop the user interface keys being used A3 14 Transducer control Tra...

Page 81: ...on gas 0 sample gas 1 high calibration gas 104 Low calibrate 0 idle 1 low calibration in progress Write 1 to initiate low calibration 105 High calibrate 0 idle 1 high calibration in progress Write 1 to initiate a high calibration Analogue output 114 Calibration mode 0 normal 1 calibration mode 115 Decrease output level 1 step down 116 Increase output level 1 step up Relays 117 Service mode 0 norma...

Page 82: ...ll be required to be entered A4 1 TCP Ethernet Communications parameters 1 Select Settings Comms parameters 2 The first screen requests the IP address always communicates in RTU mode Use the and soft keys to select the correct value Figure A2 Comms parameters IP address screen example The IP address must be set to a unique value in the network 3 Use the and soft keys to select the next parameter 4...

Page 83: ...t the next parameter 6 Gateway address or router allows communication to other LAN segments The gateway address should be the IP address of the router connected to the same LAN segment as the unit The gateway address must be within the local network Figure A4 Comms parameters gateway address screen example ...

Page 84: ...tual reduction of oxygen levels caused by the displacement of oxygen in the atmosphere Example If you are measuring 21 O2 oxygen in air typical room atmosphere and a leak of argon occurred reducing the oxygen levels by 3 in the local area then the paramagnetic cell would measure the direct decrease in oxygen plus a very small measurement offset caused by the argon now being present Before 21 oxyge...

Page 85: ... 26 1 Butene CH3CH2CH CH2 41 10 0 84 0 93 N Butyl acetate CH3COOC4H9 77 50 1 89 2 09 iso Butylene CH3 2CH CH2 44 40 0 94 1 03 1 Butyne Ethylacetylene CH3C3H2 43 50 0 91 1 00 Carbon dioxide CO2 21 00 0 26 0 29 Carbon disulphide CS2 42 20 0 87 0 96 Carbon monoxide CO 9 80 0 06 0 07 Carbon tetrachloride CCl4 66 60 1 58 1 74 Carbon tetrafluoride CF4 31 20 0 55 0 61 Chlorine Cl2 40 50 0 82 0 91 Chloro ...

Page 86: ...lothane C2HBrClF3 78 80 1 93 2 13 Helium He 1 88 0 29 0 32 N Heptane C7H16 85 24 2 12 2 33 N Hexane C6H14 73 60 1 78 1 96 Hydrogen H2 3 98 0 23 0 26 Hydrogen bromide Br 35 30 0 67 0 74 Hydrogen chloride HCl 22 60 0 31 0 34 Hydrogen cyanide HCN 14 50 0 07 0 08 Hydrogen iodide HI 48 20 1 05 1 15 Hydrogen selenide H2Se 39 20 0 79 0 87 Hydrogen sulphide H2S 25 50 0 39 0 43 Isoflurane Forane C3H2F5ClO ...

Page 87: ...3COOC3H7 65 90 1 56 1 72 Propyl amine C3H7NH2 52 40 1 17 1 29 Propyl chloride C3H7Cl 56 10 1 27 1 40 Propylene C3H6 31 50 0 56 0 62 Propylene oxide OCH2CHCH3 42 50 0 88 0 97 iso Propyl ether CH3 4CHOCH 79 40 1 95 2 15 Propyl fluoride C3H7F 52 20 1 16 1 28 Pyridine N CH 5 49 21 1 08 1 19 Silane SiH4 20 50 0 25 0 27 Silicon tetrachloride SiCl4 88 30 2 20 2 43 Styrene C6H5CH CH2 68 20 1 62 1 79 Sulph...

Page 88: ...OxyDetect Oxygen Deficiency Gas Detector Appendix 05311001B Revision 4 83 A6 End User Notes ...

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