Dräger Polytron Ex Instructions For Use Manual Download Page 2

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Contents

9023744 - 3rd edition - October 2005

Contents

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Intended Use

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Device Concept

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Hints for Safe Use

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Transmitter Polytron Ex

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Transmitter Polytron Ex R

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Transmitter Polytron Ex and Ex R

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Installing Transmitters Polytron Ex resp. Ex R

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Transmitter Polytron Ex resp. Sensing Head SE Ex:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Mounting of the Transmitter Polytron Ex

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Mounting of the Transmitter Polytron Ex R

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Mounting the Sensing Head SE Ex

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Installing Electrical Connections

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connection between Transmitter and Central Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3-Wire Connection

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4-Wire Connection

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Connection between Transmitter Polytron Ex R and Sensing Head SE Ex

. . . 13

Installing Ex-sensor in the Transmitter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Adjustment of Constant Current

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Start-Up

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Calibrating Transmitter Polytron Ex

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Zero Adjustment

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Sensitivity Adjustment

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Following Completion of Calibration:

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Calibrating Transmitter Polytron Ex R

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Zero Adjustment

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Sensitivity Adjustment

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Following Completion of Calibration:

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Check the Measured Value Output

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Testing the Constantly Amplified Sensor Signal (Sensitivity)

. . . . . . . . . . . . . . . . . . . 18

Following Completion of Test:

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Operational Use

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Using the dust filter

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Interruptions in Operation

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Summary of Contents for Polytron Ex

Page 1: ...9023744 3rd edition October 2005 Page 1 of 40 D Polytron Transmitter Ex and Ex R Instructions for Use 00123744_1 eps...

Page 2: ...between Transmitter and Central Unit 11 3 Wire Connection 11 4 Wire Connection 12 Connection between Transmitter Polytron Ex R and Sensing Head SE Ex 13 Installing Ex sensor in the Transmitter 13 Adju...

Page 3: ...on Ex and Ex R 24 Ex sensors 25 Ex sensor PR M 25 Ex sensor LC M 25 Sensing Heads SE Ex 26 Dimensions 26 Measuring other gases and vapours 27 Transmitter Ex Ex R 28 Sensing Head SE Ex 29 Design and Mo...

Page 4: ...cording to the national or European regulations on electrical equipment in potentially explosive atmospheres may be used only under the conditions speci ed here Modi cations of components or the use o...

Page 5: ...g range of 0 to 99 or 0 to 9 9 LEL can be realized Remark The measuring range 0 to 9 9 LEL is displayed without a decimal point as an integer value between 0 and 99 The sensing head SE Ex PR M ET resp...

Page 6: ...e point of detection are well accessible for the user Transmitter Polytron Ex with Ex sensor PR M Transmitter Polytron Ex with Ex sensor LC M Transmitter Polytron Ex R with remote sensing head SE Ex t...

Page 7: ...olytron Ex R The transmitter Polytron Ex R is intended to be used for the detection of ammable gases and vapours under atmospheric conditions The sensing head is connected to an inseparably connected...

Page 8: ...e for use with the following gases and vapours as regards the measurement function for explosion protection Methane propane hydrogen n butane ethene ethylene dimethylether acetone ammonia gasoline 065...

Page 9: ...cated above a possible leak or at the highest points at which major concentrations of gas may be found In case of gases and vapours with a density greater than that of air the sensing head resp transm...

Page 10: ...e pre conditioned connection cable bet ween sensing head SE Ex and transmitter Polytron Ex R Mount with four screws through the housing or by means of the mounting brackets Mounting the Sensing Head S...

Page 11: ...over and fix it with the screws Observe the tightness of the rubber gasket Complete installation by fixing the cover of the transmitter with four screws and observe tightness 3 Wire Connection The cab...

Page 12: ...itter terminals K1 and K3 must not exceed 20 Ohms The sum total of the input resistance of the central controller and the line resistances of both cores for the connection to the transmitter terminals...

Page 13: ...he ex approval Installing Ex sensor in the Transmitter 1 Loosen hexagon socket head bolts on upper side and remove upper section 2 Unscrew bayonet ring remove cover plate 3 Remove Ex sensor from packa...

Page 14: ...t points Switch on power supply 5 Using potentiometer adjust voltage at the test points for 270 mA 891 mV for 276 mA 911 mV 4 Disconnect voltmeter 6 Screw upper section onto housing using the hexagon...

Page 15: ...ses or vapours present or with calibration adapter Supply clean air at a rate of approx 0 5 L min via the calibration adapter 2 Wait for the display to stabilize max 3 minutes Set potentiometer such t...

Page 16: ...sensor must be replaced refer to page 22 Following Completion of Calibration 1 Set sliding switch to position 0 normal 2 Use special key to close flap in front of adjusters Calibrating Transmitter Po...

Page 17: ...ng in LEL For calibration with solvent vapours use can be made of the calibration chamber see Order List page 31 in which a specified amount of solvent is evaporated so as to obtain for example 50 LEL...

Page 18: ...mended calibration gas con centration s table below at a flow rate of approx 0 5 L min via the calibration adapter The calibration gas must be a mixture of the gas component to be monitored in air Mix...

Page 19: ...9023744 3rd edition October 2005 Page 19 of 40 Start Up Following Completion of Test 1 Set sliding switch to position 0 normal Use special key to close flap in front of adjusters 02823744_1 eps 1...

Page 20: ...List order no 68 10 537 This simply presses into place in the opening in front of the sensor sintered metal disc and locks in position The dust lter has virtually no adverse effect on sensor response...

Page 21: ...as warning system not exceeding a time interval of six months Check the zero adjustment and sensitivity calibration see page 15 to page 17 In particular it is important to check the condition of the s...

Page 22: ...cally safe The transmitter must be calibrated following sensor replacement see page 15 Allow 10 minutes for new Ex sensor to warm up Transmitter Polytron Ex R Use only Dr ger Sensors resp sensing head...

Page 23: ...ause Remedy No Display Cable faulty Check cable to central controller Transmitter resp sensing head can no longer be calibrated Ex sensor faulty or poisoned Replace Ex sensor page 22 Measurement curre...

Page 24: ...l conditions during operation 40 o C to 65 o C 2 700 to 1300 hPa in hazardous areas 800 to 1100 hPa 10 to 95 r h 2 The readability of the LC display might be affected at temperatures below 20 o C duri...

Page 25: ...y D 23560 L beck Germany Type Ex sensor PR M II 2G EEx d IIC T6 T5 T4 T3 DMT 97 ATEX E001X C0158 year of manufacturing by serial number 1 1 The year of manufacturing is coded by the third capital lett...

Page 26: ...r of manufacturing by serial number 1 1 The year of manufacturing is coded by the third capital letter of the serial number on the type plate S 2002 T 2003 U 2004 W 2005 X 2006 Y 2007 Z 2008 A 2009 B...

Page 27: ...methylether CH3OCH3 3 0 4 2 Ethanol C2H5OH 3 3 4 0 99 51 55 Ethene ethylene C2H4 2 7 5 2 Ethyl acetate CH3COOC2H5 2 1 4 0 99 67 72 Ethylene oxide C2H4O 2 6 3 0 51 36 41 2 n hexane C6H14 1 2 4 0 99 67...

Page 28: ...Technical Data Page 28 of 40 9023744 3rd edition October 2005 Transmitter Ex Ex R 106 mm 82 mm 152 mm 03823744_1 eps...

Page 29: ...9023744 3rd edition October 2005 Page 29 of 40 Technical Data Sensing Head SE Ex 45 mm 68 mm 03923744_1 eps...

Page 30: ...t pellistor The oxygen required for combustion is obtained from the monitored air The detector element is additionally heated by the resultant heat of reaction This heat in turn cau ses a change in th...

Page 31: ...ge 0 to 99 LEL 68 09 758 Sensing head SE Ex LC M measuring range 0 to 9 9 LEL 68 10 486 Accessories Cable gland 7 to 12 mm for second connecting cable 83 16 563 Dust lter 2 packing qty 10 2 Not tested...

Page 32: ...EC Type Examination Certi cate BVS 03 ATEX E 160 X Page 32 of 40 9023744 3rd edition October 2005 EC Type Examination Certi cate BVS 03 ATEX E 160 X...

Page 33: ...9023744 3rd edition October 2005 Page 33 of 40 EC Type Examination Certi cate BVS 03 ATEX E 160 X...

Page 34: ...Page 34 of 40 9023744 3rd edition October 2005...

Page 35: ...9023744 3rd edition October 2005 Page 35 of 40 EC Type Examination Certi cate BVS 03 ATEX E 160 X...

Page 36: ...Declaration of Conformity Page 36 of 40 9023744 3rd edition October 2005 Declaration of Conformity...

Page 37: ...alibration gas concentration 15 17 18 Catalyst poisons 8 CE marking 24 Central controller 5 Completion of Calibration 16 17 Completion of Test 19 Connection between Transmitter and Central Unit 11 Con...

Page 38: ...ts 9 10 One man calibration 5 Operating voltage 24 Operational parameters 25 26 Operational Use 20 Order List 31 Power consumption 24 Power supply circuit 25 Principle of Operation 30 Resolution 24 Sa...

Page 39: ...lytron Ex R with sensing head SE Ex LC M 6 Transmitter Polytron Ex R with sensing head SE Ex PR M ET 6 Transmitter with measurement function for explosion protection according to 94 9 EC 8 Ventilation...

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Summary of Contents for Polytron Ex

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Dräger Polytron Ex, Instructions For Use Manual, Page: 2 / 39

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