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17

CALIBRATION and

CHANGE of SENSOR

SENSOR

Choice of

standard gas

Are you sure?

Stored in

memory

Zero

measurement:

Sensitivity

measurement

ANA1

Are you sure?

Stored in

memory

ANA2

Are you sure?

Stored in

memory

Zero setting:

Zero setting:

Sensitivity

setting

Sensitivity

setting

Are you sure?

Stored in

memory

Change of

sensor?

Change of

sensor?

52

53

54

55

5A

56

5D

5C

59

58

5B

0

1

2

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Summary of Contents for olct 80

Page 1: ...TECHNICAL MANUAL Ref CD00004 Code 06_MT_OLCT80_GB_24_11_06 ...

Page 2: ...PECIFIC USE C C L L A A U U S S E E S S C C O O N N C C E E R R N N I I N N G G P P R R O O P P E E R R T T Y Y Drawings plans specifications and information included in this document contain confidential information that is the property of ISC OLDHAM None of this information may be reproduced copied divulged or translated by physical electronic or any other means nor used as the basis for the man...

Page 3: ...NF C def rel 1 rel 2 V V sensor power supply of j5 signal output to central measurement unit The contact positions correspond to sensor de energerised volt free relay fault relay Alarm 1 relay Alarm 2 relay j1 0V V V RS485 Line A j2 0V V V RS485 Line B j5 IN 1 and IN 2 analogue inputs 4 20 mA RS485 link to next sensor in loop OUT 4 20 mA analogue output to measurement unit RS485 Digital signal to ...

Page 4: ...C NO NF C def rel 1 rel 2 Sensor power supply The contact positions correspond to sensor de energerised no potential on contacts Disturbance relay Alarm 1 relay Alarm 2 relay j1 0V V V RS485 Line A j2 0V V V RS485 Line B j5 IN 1 and IN 2 analogue inputs 4 20 mA RS485 link to next sensor in loop OUT 4 20 mA analogue output to measurement unit RS485 Digital signal to measurement unit Power supply to...

Page 5: ...6 Figure 2 Earth connection M44 pitch of 1 Possible mounting TITLE OVERALL DIMENSIONS DRAWING TRANSMITTER OLCT80 AD SCALE IDENTIFICATION NO DRAWN BY CHECKED BY APPROVED BY ...

Page 6: ...7 Figure 3 SENSOR OLCT80 IR SENSOR ...

Page 7: ...8 Figure 4 Cable length 15 m max M44 pitch of 1 Possible mounting TITLE OVERALL DIMENSIONS DRAWING TRANSMITTER OLCT80 REMOTE SCALE IDENTIFICATION NO DRAWN BY CHECKED BY APPROVED BY ...

Page 8: ...E 5 Example of an OLCT 80 transmitter fitted with an integrated measuring head and two auxiliary inputs FIGURE 6 Example of an OLCT 80D transmitter fitted with a remote measuring head and two auxiliary inputs ...

Page 9: ...either via V and V of the OLCT80 or via a separate power supply unit Power the input detector either via V and V of the OLCT80 or via a separate power supply unit pps1 pps2 pps4 pps3 pps7 pps8 pps1 pps2 pps4 pps3 pps7 pps8 Connection of a 4 20 mA detector 3 wires IN 2 IN 1 pps1 pps2 pps4 pps3 pps7 pps8 Connect the negative 4 20 mA of the input detector to the negative V of the OLCT80 pps1 pps2 pps...

Page 10: ...placing a sensor block all versions 19 3 Scrapping of OLCT80 19 V LIST OF REPLACEMENT PARTS 19 1 Flameproof sensor blocks 19 2 Intrinsically safe sensor blocks 20 VI LIST OF ACCESSORIES 21 VII LIST OF SPARE PARTS 22 VIII MARKING AND SPECIAL INSTRUCTIONS FOR USE OF THE OLCT 80 IN EXPLOSIVE ATMOSPHERES 23 IX SPECIFICATIONS 25 X REMOTE CONTROL UNIT IR20 START UP AND USE 27 1 Presentation 27 2 Start u...

Page 11: ...re pressure etc provided that they deliver a 4 20 mA analogue signal Fig 5 It feeds two alarm contacts and a technical fault contact 2A 250VAC potential free The relays are actuated By the OLCT80 itself using the programmed alarm thresholds And or by the MX62 central unit if the OLCT80 is connected to it I I I I I I N N S S T T A AL L L L A AT T I IO O N N CAUTION First refer to the Paragraph Mark...

Page 12: ...g the operation Switch on the power supply and leave to stabilise for 2 to 3 minutes During the first minute of warming up the detector delivers a current of 2 mA Check the zero 4 mA and response to the standard reference gas If necessary adjust the zero and sensitivity Set the system to normal operation by deactivating the disable Note The detector will now run an automatic cyclic self test 1 1 V...

Page 13: ...put 61 60 ACCESS TO MAINTENANCE List of parameters Inside temperature Sensor temperature Measurement of input signals of references of the line level of wear 42 CALIBRATE Enter access code 50 51 21 TIME and DATE MANAGEM Time and date setting menu Are you sure 20 DISPLAY of MEASUREM Display of stored measurements 10 22 ACKNOWL menu T_green Enter key 71 INFO MENU Progr version Serial no Code date EE...

Page 14: ...y On or Off Main display or secondary measurement 4 20mA capex synthesis normal Measurement input or acknowl Unit Scale Type of display Integration time Resolve ambiguity Are you sure Stored in memory Are you sure Stored in memory Sensor or head Input 1 Input 2 Relay 1 Relay 2 Internal or external manag Positive or negative safety Normal or Buzzer Hold time Reactivation time Same Are you sure Stor...

Page 15: ...peed and slave adress Backlight ON or OFF Operation mode parrallel loop repeater slave adress Communication speed Backlighting ON or OFF 3C Are you sure Stored in memory Change of access code Change of access code Are you sure Stored in memory 34 35 39 38 3D ...

Page 16: ...n memory Zero measurement Sensitivity measurement ANA1 Are you sure Stored in memory ANA2 Are you sure Stored in memory Zero setting Zero setting Sensitivity setting Sensitivity setting Are you sure Stored in memory Change of sensor Change of sensor 52 53 54 55 5A 56 5D 5C 59 58 5B 0 1 2 ...

Page 17: ...ble for setting safety practices and policies For new installations it may be prudent to carry out bump tests frequently at first perhaps weekly increasing the time intervals to perhaps monthly or more as confidence grows with experience in the installation concerned on the basis of the maintenance record 1 1 Calibration Calibration is necessary in the following cases Start up Replacement of the s...

Page 18: ...mental level For more details of the existing sites of collection contact the local administration or the distributor of this product V V L L I IS S T T O O F F R RE E P P L L A AC C E E M M E E N NT T P P A A R RT T S S 1 1 F Fl la a m me ep p r ro oo of f s se en ns so o r r b bl l o oc ck ks s FLAMEPROOF SENSOR BLOCKS REFERENCE SENSOR BLOCK OLCT20 ADF EXPLO C1000 SENSOR BLOCK OLCT20 ADF EXPLO A...

Page 19: ...ppm SENSOR BLOCK OLCT20 SI H2 2000 PPM SENSOR BLOCK OLCT20 SI NH3 100 PPM NH3 1000PPM SENSOR BLOCK OLCT20 SI HCL 30 PPM HCL 100 PPM SENSOR BLOCK OLCT20 SI HCN 10 PPM HCN 30 PPM SENSOR BLOCK OLCT20 SI CL2 10 PPM SENSOR BLOCK OLCT20 SI O3 1 ppm SENSOR BLOCK OLCT20 SI COCL2 1ppm SENSOR BLOCK OLCT20 SI PH3 1 ppm SENSOR BLOCK OLCT20 SI ASH3 1 ppm SENSOR BLOCK OLCT20 SI HF 10 ppm SENSOR BLOCK OLCT20 SI ...

Page 20: ...ard model for O2 CO H2S H2 Model for explosive or special gases NO2 SO2 CL2 HCL HCN HF NH3 ETO O3 CLO2 PH3 NO etc 6331137 6331141 GAS CIRCULATION HEAD For explosive gases CO H2S O2 6327910 ANTI SPLASH DEVICE 6329014 PTFE PROTECTIVE FILTER 6335975 ACTIVATED CARBON FILTER 6335976 REMOTE GAS INJECTION HEAD only for explosive gases 6327911 GAS COLLECTOR 6323620 IR20 REMOTE CONTROL UNIT Compulsory carr...

Page 21: ...all into question the safety of the equipment Spare parts Reference Assembled cover without manufacturer s plate 6 323 636 Cable gland kit for armoured cable M25 6 343 490 Cable gland kit for armoured cable M20 6 343 489 Stainless steel plug kit M25 6 343 492 Stainless steel plug kit M20 6 343 491 Battery for IR20 remote control unit 6 111 147 Wall bracket for OLCT80 OLCT IR 6124622 ...

Page 22: ... and 22 for ambient temperatures of 25 C to 55 C with a temperature class of T4 T135 C Installation Installation must be carried out according to prevailing standards especially standards EN 60079 14 EN 60079 17 EN 50281 1 2 For version OLCT80 fitted with the OLCT IR detector the detector must always be secured horizontally so that the arrow on the OLCT IR protective cover points upwards Cable inl...

Page 23: ... Disconnect the power supply before opening Wait for two minutes before opening Serial number Year of build For a type OLCT80id detector On the case OLDHAM Arras CE 0080 OLCT80id II 2 GD IP66 EEx d ia ia IIC T4 T135 C INERIS 03ATEX 0240X Disconnect the power supply before opening Wait for two minutes before opening Serial number Year of build On the remote detection element OLDHAM Arras CE 0080 OL...

Page 24: ...ts 3 potential free relays analogue Current source encoded from 0 to 25 mA non isolated 4 to 20 mA linear current reserved for measurement 0 mA indicates an electronic fault or no power supply An output of 1 5 mA indicates an optical fault Temperature outside limit A 2 mA output indicates calibration mode An output greater than 23 mA indicates a range overrun digital Two independent opto isolated ...

Page 25: ...4 1 8 1 35 1 05 Ethane C2H6 3 0 15 5 1 04 1 5 1 1 0 85 Ethanol C2H6O 3 3 19 0 1 6 1 5 1 1 0 85 Ethylene C2H4 2 7 34 0 0 98 1 65 1 2 0 95 Natural gas 1 CH4 5 0 15 0 0 55 1 0 0 75 0 55 L P G 2 Prop But 1 65 9 0 1 85 1 65 1 2 0 95 Hexane C6H14 1 2 7 4 3 0 2 1 1 7 1 2 Hydrogen H2 4 0 75 6 0 069 1 25 1 0 0 8 Methane CH4 5 0 15 0 0 55 1 0 0 75 0 55 Octane C8H18 1 0 6 0 3 9 2 7 2 0 1 5 Pentane C5H12 1 4 ...

Page 26: ...the protective leather case and the battery cover at the rear of the remote control unit Insert two LR06 batteries checking their polarity Refit the battery cover and case Press any key the red lamp should light up 2 2 Use To control the gas detector point the front end of the remote control unit towards the detector Refer to Chapter III of this manual to carry out the maintenance operations avail...

Page 27: ... T4 INERIS 04ATEX0011X Do not open in explosive atmospheres Serial number and year of build X X I I C C H H A A R R A A C C T T E E R R I IS S T T I IC C S S O O F F T T H HE E J J B B U US S C C O O M M M M U U N N I IC C A AT T I IO O N N M M O O D D E E There are 2 JBUS communication modes in the OLCT80 via the loop and loop management system see Figures 1 5 and 6 The modes are ASCII or binary ...

Page 28: ...te 44 etat_al_def table_tr_byte 46 etat relays table_tr_byte 50 etat_rel settable speed 1 start 8 data or control bits 1 stop Timeout of 450 ms reading response time is less than 10 ms Frame example 5A 03 00 04 00 05 C9 23 reading of 5 words from address 4 on slave 5A byte 5A or letter Z corresponds to the slave number byte 03 corresponds to the function number read of N words byte 00 is the most ...

Page 29: ...30 X X I I I I C C E E R RT T I IF F I IC C A AT T I IO O N N O O F F A AT T E E X X A AP P P P R RO O V V A AL L ...

Page 30: ...31 ...

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