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Rosemount 2120, Reference Manual

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Rosemount 2120 Reference Manual Download Page 29

Reference Manual

00809-0100-4030, Rev DA
June 2007

Rosemount 2120

2-13

2120 Intrinsically Safe NAMUR

• Intrinsically safe NAMUR (Blue label and cassette)

NOTES:

This I.S. cassette can not be interchanged with any other cassette.

See Appendix B for I.S. approvals.

This I.S. cassette requires an Isolating Amplifier.

Do not exceed 8V dc.

OPERATION MODE

Dry On Mode

Dry
Wet

Wet On Mode

Dry
Wet

Dry On

Wet On

Seconds Delay

0.3

0.3

3

30

10

1

3

30

10

1

1

2

+

-

Intrinsically Safe
EN 50227/ NAMUR

I

ON

  = 2.2 ... 2.5

I

OFF

 = 0.8 ... 1.0

+

-

Isolating amplifier to NAMUR (IEC60947-5-6, EN50227)

Ex

Ex

GB

F

D

S

E

NL

Interface selon NAMUR (IEC60947-5-6)

Isolatie versterking tot NAMUR (IEC60947-5-6)

Galvanisch getrennter Verstärker nach NAMUR
(IEC60947-5-6)

Amplificador de isolamento NAMUR (IEC60947-5-6)

Version med isolerande NAMUR-förstärkare enligt 
(IEC 60947-5-6)

PL

Bariera zgodna z NAMUR (IEC60947-5-6)

8V
dc

Summary of Contents for 2120

Page 1: ...Reference Manual 00809 0100 4030 Rev DA June 2007 www rosemount com Rosemount 2120 Vibrating Fork Liquid Level Switch ...

Page 2: ......

Page 3: ... NOT designed for nuclear qualified applications Using non nuclear qualified products in applications that require nuclear qualified hardware or products may cause inaccurate readings For information on Emerson Process Management nuclear qualified products contact your local Emerson Process Management Sales Representative CAUTION Rosemount pursues a policy of continuous development and product imp...

Page 4: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 ...

Page 5: ...1 3 Application Considerations 1 4 Handling the 2120 1 4 Device Identification 1 5 Installation Considerations and Recommendations 1 6 Switchpoint 1 8 Service Support 1 8 Warranty 1 8 SECTION 2 Installation Safety Messages 2 1 Mechanical Installation 2 2 Correct Fork Alignment 2 2 Pipe Installation 2 3 Vessel Installation 2 3 Cable Gland Orientation 2 4 Set Mode Switch Switching Time Delay 2 4 LED...

Page 6: ...are Parts and Accessories A 11 APPENDIX B Product Certifications Ordinary Location Certification for FM B 1 Ordinary Location Certification for CSA B 1 European Directive Information B 1 ATEX Directive 94 9 EC B 1 Pressure Equipment Directive PED 97 23 EC B 1 L V Directive B 1 Electro Magnetic Compatibility EMC Directive B 1 Vibration Resistance B 1 CE mark B 1 Overfill protection B 2 Approved Man...

Page 7: ...rdous area installations B 10 Reference European ATEX Directive 94 9 EC Annex II 1 0 6 B 10 ATEX Intrinsically Safe Approval B 12 Instructions specific to hazardous area installations B 12 IECEx Approvals B 14 IECEx Flame Proof Approvals B 14 Instructions specific to hazardous area installations B 14 IECEx Intrinsically Safe Approval B 16 Instructions specific to hazardous area installations B 16 ...

Page 8: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 TOC 4 ...

Page 9: ...on guidelines could result in death or serious injury Protection afforded by compliance to EN61010 1 2001 may be impaired if the equipment is not used as specified The Rosemount 2120 is a liquid level switch It must be installed connected commissioned operated and maintained by suitably qualified personnel only observing any national and local requirements that may apply Ensure the wiring is suita...

Page 10: ...g it suitable for almost all liquids including coating liquids avoid bridging of forks aerated liquids and slurries Rosemount 2120 Application and Mounting Examples For most liquids including coating and aerated liquids and slurries the function is virtually unaffected by flow turbulence bubbles foam vibration solid particles build up avoid bridging of forks or properties of the liquid For use in ...

Page 11: ...ly 2 in 50 mm dependent on connection type the 2120 can be installed in even small diameter pipes By selecting the option of direct load switching electronics the 2120 is ideal for reliable pump control and can be used to protect against pumps running dry High and Low Level Alarm Maximum and minimum level detection in tanks containing many different types of liquids are an ideal application for th...

Page 12: ...ild up Ensure no risk of bridging the forks If coating bridging may occur ensure the Halar PFA coated version is used to reduce the risk of build up Examples of products that can create bridging of forks are dense paper slurries and bitumen Check the solids content in the liquid Problems may occur if product coats and dries causing caking As a guideline maximum solid particle diameter in the liqui...

Page 13: ...cation See Appendix B Product Certifications for specific product approvals 2120 Vibrating Fork Level Switch www rosemount com DIR E CT LOAD S WITCHING 99500200 www rosemount com MAGNETIC TEST POINT 20 264V ac 50 60Hz 20 60Vdc Output Rating Load 20 500mA Supply 2120 2120 2120_24aa eps ...

Page 14: ...age 3 1 Ensure sufficient room for mounting and electrical connection See Dimensional Drawings on page A 5 for switch dimensions Figure 1 3 Ensure Adequate Space Outside Tank Ensure that the forks do not come into contact with the tank wall or any internal fittings or obstructions Avoid installing the 2120 where it will be exposed to liquid entering the tank at the fill point Avoid heavy splashing...

Page 15: ... up on tank wall Extra consideration is needed if the plant vibration is close to the 1300 Hz operating frequency of the 2120 Avoid Long Fork Length and Vibration without Supporting the Fork Figure 1 5 Support fork if high dynamic loads 2120 fig9 eps 2120 2120_29aa eps 3 28 ft 1 0 m 3 28 ft 1 0 m 3 28 ft 1 0 m ...

Page 16: ...nd understand the hazard If the product being returned was exposed to a hazardous substance as defined by OSHA a copy of the required Material Safety Data Sheet MSDS for each hazardous substance identified must be included with the returned goods Warranty Emerson Process Management will replace a faulty or failed 2120 with a new unit provided that the fault or failure is reported either directly o...

Page 17: ...dures and instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations Information that raises potential safety issues is indicated by a caution symbol The external hot surface symbol is used when a surface is hot and care must be taken to award possible burns If there is a risk of an electrical shock the symbol is used Refer to the sa...

Page 18: ... Mechanical Installation Correct Fork Alignment Ensure correct fork alignment Figure 2 1 Sealing Figure 2 2 Tighten the Switch PTFE Teflon Gasket Seal supplied in 02100 1020 0001 NPT BSPT R thread BSPP G thread Tri Clamp 2120 fig3 fig4 eps 2120 fig6 eps Alignment groove ...

Page 19: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 2 3 Pipe Installation Vessel Installation 2120 fig7 eps 2120 fig8 eps ...

Page 20: ...t 2120 2 4 Cable Gland Orientation Set Mode Switch Switching Time Delay 2120 fig10 eps OPERATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 1 2 3 OUT 4 PLC PNP 2120 fig11 eps Mode Switch Time Delay LED ...

Page 21: ... time delay typical for low level applications NOTE There is a five second delay when switching between modes and time delays The small cut out in the rotating switch indicates the delay mode chosen Recommended installation for high level is dry on and low level is wet on Do not install in the normally off state Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 Mode Dry ON 2120 fig11a fig13b...

Page 22: ...Switch Status Continuous Output state is on 1 every second Output state is off 1 every 2 seconds Uncalibrated 1 every 4 seconds Load fault load current too high load short circuit 2 times second Indication of successful calibration 3 times second Internal fault micro ROM or RAM Off Problem e g supply ...

Page 23: ... 3mA which continues to flow when the 2120 is off If selecting a relay to wire in series with the 2120 the user must ensure that the drop out voltage of the relay is greater than the voltage which will be generated across the relay coil when 3mA flows through it Direct Load Switching WARNING Isolate Supply Before Removing OPERATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry On Wet On Seconds...

Page 24: ...nuously LED flashes every second LED on continuously LED flashes every second Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 Dry On Wet On Seconds Delay 0 3 0 3 30 10 3 30 10 1 3 1 U N L 0V V Fuse 2A T IL 12V DPST Fuse 2A T N L 0V V IL 3mA DPST U N L 0V V Fuse 2A T IL 12V DPST Fuse 2A T N L 0V V IL 3mA DPST ...

Page 25: ... for load switching and direct PLC switching 3 wire Yellow label OPERATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 1 2 3 OUT 4 PLC PNP Earth Ground 0V V O P U 20 60V dc I 4mA IL IL MAX 0 500mA î 5A 40ms UOUT ON U 2 5V IL OFF 100μA Fuse 2A T ...

Page 26: ...ashes every second LED on continuously LED flashes every second Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 Dry On Wet On Seconds Delay 0 3 0 3 30 10 3 30 10 1 3 1 OUT PLC I P ΔU 3V IL OUT PLC I P IL 100μA OUT PLC I P ΔU 3V IL OUT PLC I P IL 100μA OUT ΔU 3V IL Fuse 1A T R OUT IL Fuse 1A T R 100μA OUT ΔU 3V IL Fuse 1A T R OUT IL Fuse 1A T R 100μA ...

Page 27: ...eep the switch free of obstructions Label the switch to indicate that it is the supply disconnection device for the 2120 OPERATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 4 5 6 NO C NC RELAY 1 2 3 L N PE Ground N 0V Fuse 0 5A T Live V U 20 264V ac 50 60Hz I 6mA U 20 60V dc I 6mA NC C NO UMAX 250V ac IMAX 5A PMAX 1250VA cos φ 1 PMAX 1000V...

Page 28: ...2 High level Dry ON Low level Wet ON LED on continuously LED flashes every second LED on continuously LED flashes every second Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 Dry On Wet On Seconds Delay 0 3 0 3 30 10 3 30 10 1 3 1 NC NO C NC NO C NC NO C NC NO C ...

Page 29: ...RATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 1 2 Intrinsically Safe EN 50227 NAMUR ION 2 2 2 5 IOFF 0 8 1 0 Isolating amplifier to NAMUR IEC60947 5 6 EN50227 Ex Ex GB F D S E NL Interface selon NAMUR IEC60947 5 6 Isolatie versterking tot NAMUR IEC60947 5 6 Galvanisch getrennter Verstärker nach NAMUR IEC60947 5 6 Amplificador de isolame...

Page 30: ... 14 High level Dry ON Low level Wet ON LED on continuously LED flashes every second LED on continuously LED flashes every second Dry On Wet On Seconds Delay 0 3 0 3 3 30 10 1 3 30 10 1 Dry On Wet On Seconds Delay 0 3 0 3 30 10 3 30 10 1 3 1 2 2 mA 1 0 mA 2 2 mA 1 0 mA ...

Page 31: ... 2 2120 Maintenance page 3 2 Troubleshooting page 3 3 Spare Parts page 3 3 Replacement and Calibration of Electronic PCB Cassettes page 3 4 Magnetic Test Point A magnetic test point is on the side of the housing allowing a functional test of the 2120 By touching a magnet on the target the 2120 output will change state for as long as the magnet is present 2120 fig17 jpg ...

Page 32: ... it is damaged do not use Ensure the lid and cable glands are fitted securely Ensure the LED flash rate is 1 Hz or continually on If anything else is demonstrated see LED Indication on page 2 6 2120 Maintenance NOTE If using a brush to clean ensure it is of a soft type OK 2120 2120_27aa eps 2120 fig18a fig18b fig18c eps ...

Page 33: ... electronics model LED 3 flashes per second Internal failure contact supplier LED 1 flash every 2 seconds Uncalibrated return to supplier LED 1 flash every 4 seconds Load fault load current too high load short circuit check installation Fork damaged Replace Thick encrustation on forks Clean the fork with care 5 second delay on changing mode delay Wait 5 seconds Incorrect switching Dry On Wet On se...

Page 34: ...re Hazardous Area a suitably qualified person must carry it out All work in hazardous areas must be carried out in accordance to local code of practice For general hazardous area requirements for this equipment refer to Appendix B Product Certifications This calibration routine takes a bit of practice do not be surprised if the unit does not calibrate after the first attempt Replacement Sequence O...

Page 35: ... ON with a one second delay Figure 3 3 5 Reconnect the power to the unit Reverse Step 1 Figure 3 1 Cassette to be replaced Figure 3 2 Mode switch set to Dry ON 1 second delay This is an example of how the existing cassette may look Take note of the actual setting Figure 3 3 Mode switch of replacement cassette set to Wet ON 1 second delay OPERATION MODE Dry On Mode Dry Wet Wet On Mode Dry Wet Dry O...

Page 36: ...ll flash at one flash per second 10 Within three seconds rotate the Mode switch two steps clockwise 11 After a two second delay the LED will go out stop flashing 12 Within three seconds rotate the Mode switch two steps anti clockwise 13 After a two second delay the LED should flash twice per second 14 If the LED is flashing twice per second the calibration has occurred correctly Remove the magnet ...

Page 37: ...to a maximum 118 in 3000 mm other on request Process Material 316L Stainless Steel 1 4404 Hastelloy C or Halar ECTFE PFA co polymer coating 39 37 in 1000 mm max Hand polished to better than 0 8μm option available for hygienic connections Gasket material for 3 4 in and 1 in BSPP G is Non asbestos BS7531 Grade X carbon fiber with rubber binder Dimensional Drawings See Dimensional Drawings on page A ...

Page 38: ...e to 18 85 psig 1 3 barg Hygienic Connection 435 psig 30 barg Flanged Connection See Figure A 1 and Table A 1 whichever one is lower Figure A 1 Process Pressure Table A 1 Maximum Flange Pressure Rating Standard Class Rating SST Flanges ANSI 150 lb 275 psig 1 1 At 100 F 38 C the rating decreases with increasing temp ANSI 300 lb 720 psig 1 ANSI 600 lb 1 440 psig 1 DIN PN 10 16 10 16 barg 2 DIN PN 25...

Page 39: ...s Content and Coating Maximum recommended diameter of solid particles in the liquid is 0 2 in 5 mm For coating product avoid bridging of forks Switching Delay User selectable 0 3 1 3 10 30 seconds delay dry to wet wet to dry CIP Clean In Place Cleaning Withstands steam cleaning routines up to 302 F 150 C 176 80 140 60 40 40 40 40 302 150 Process Temperature F C Ambient Temperature F C 2120 2120_18...

Page 40: ...ith two brass conduit plugs Plastic Housing The direct load PNP PLC and IS electronics are shipped with one PA66 1 cable gland and one blanking plug The relay units are shipped with two PA66 1 cable glands Grounding The 2120 should always be grounded either through the terminals or using the external ground connection provided Electrical Connections Direct load switching two wire Solid state PNP o...

Page 41: ...2 90 4 02 102 4 72 120 Aluminum 2 68 68 4 02 102 6 14 156 316 Stainless Steel 2 76 70 4 13 105 6 30 160 Note Dimensions are in inches millimeters B Cable entry M20x1 5 or 3 4 in NPT A C 0 51 13 Switchpoint A B C 2 72 69 1 73 44 Cable entry M20x1 5 or 1 2 in NPT 1 575 40 A F hexagon 91 23 0 51 13 Switchpoint A B Cable Gland 1 575 40 A F hexagon 5 60 142 0 51 13 Switchpoint 1 14 29 91 23 1 73 44 2 7...

Page 42: ...d 4 102 3 50 89 39 37 1000 Table A 5 Housing Dimensions Dimensions are in inches millimeters Material A B C 1 1 Will vary with flange rating and thickness C is nominal maximum thickness and allows a flange up to 1 77 in 45 mm thick This equates to a 4 in ANSI 600lb RF Glass Nylon 3 52 90 4 02 102 6 30 160 Aluminum 2 68 68 4 02 102 6 14 156 Stainless Steel 2 76 70 4 13 105 7 87 200 Note Dimensions ...

Page 43: ... ring Seal 1 in BSPP 1 7 44 NA NA Note Dimensions are in inches millimeters 1 14 29 Cable Gland Cable Gland 0 91 23 4 96 126 4 96 126 2 52 64 1 73 44 4 02 102 4 02 102 3 52 90 3 56 90 E M 0 51 13 Switchpoint 0 51 13 Switchpoint 3 56 90 4 02 102 4 96 126 Cable Gland 40 A F Hexagon 0 51 13 Switchpoint 3 07 78 0 91 23 0 51 13 Switchpoint 1 5 or 2 in Tri Clamp 0 51 13 Switchpoint 1 in BSPP o ring seal...

Page 44: ...hread 1A 1 in BSPT R thread 1B 1 in BSPP G thread 1D 1 in NPT thread Hygienic Fitting 1P 1 in BSPP G O ring 5R 1 5 in 38 mm Tri Clamp 2R 2 in 51 mm Tri Clamp ANSI Flanges 5G 1 5 in ANSI 150 lb RF 5H 1 5 in ANSI 300 lb RF 5J 1 5 in ANSI 600 lb RF 2G 2 in ANSI 150 lb RF 2H 2 in ANSI 300 lb RF 2J 2 in ANSI 600 lb RF 3G 3 in ANSI 150 lb RF 3H 3 in ANSI 300 lb RF 3J 3 in ANSI 600 lb RF 4G 4 in ANSI 150...

Page 45: ...fety C A D I3 NEPSI Intrinsic Safety C A D I5 FM Intrinsic Safety C A D I6 CSA I S and non incendive C A D I7 IECEx Intrinsic Safety C A D Code Housing Available for Certifications A Glass Filled Nylon M20 conduits cable threads NA I1 I3 I5 I6 I7 D Glass Filled Nylon 1 2 in NPT conduits cable threads NA I1 I3 I5 I6 I7 X Aluminum Alloy M20 conduits cable threads E1 E7 Y Aluminum Alloy 3 4 in NPT co...

Page 46: ...iability It is manufactured and supported in a manner suitable for applications up to SIL 2 of IEC 61508 as a Type B Safety Related Subsystem when configured as a high level alarm in conjunction with a Namur Barrier 7 See Appendix B Product Certifications E5 includes G5 requirements G5 is for use in unclassified safe area locations only 8 See Appendix B Product Certifications E6 includes G6 requir...

Page 47: ...g seal Material 316 St steel NBR Nitrile 02100 1030 0001 Telescopic test magnet 02100 1040 0001 Seal for 3 4 in BSPP G3 4A Material Non asbestos BS7531 grade X carbon fiber with rubber binder 02120 2000 0001 Adjustable clamp gland for 1 in extended lengths Material 316 St steel Si Silicone rubber seal 02120 2000 0002 Adjustable clamp gland for 1 in extended lengths Material 316 St steel Si Silicon...

Page 48: ...able for Housing 02120 3000 0001 Direct load switching 2 Wire Red See page 2 7 A D X S 02120 3010 0001 PNP PLC cassette Yellow See page 2 9 A D X S 02120 3020 0001 Intrinsically safe cassette Blue See page 2 13 A D 02120 3030 0001 Relay output cassette Green See page 2 11 A D X S 02120 3040 0001 FM Exd Direct load switching 2 Wire Red See page 2 7 Y T 02120 3050 0001 FM Exd PNP PLC cassette Yellow...

Page 49: ...dited by the Federal Occupational Safety and Health Administration OSHA Ordinary Location Certification for CSA G6 Certificate Number 06 CSA 1796535 The switch has been examined and tested to determine that the design meets basic electrical mechanical and fire protection requirements by CSA a nationally recognized testing laboratory as accredited by the Standards Council of Canada SCC European Dir...

Page 50: ...ns 1 The equipment may be used with flammable gases and vapors with apparatus Class 1 Div 1 Groups A B C and D 2 The equipment is certified for use in ambient temperatures of 40 F to 176 F 40 C to 80 C and with a maximum process temperature of 150 C 3 Installation of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice 4 Inspection an...

Page 51: ...s a partition wall it is recommended that the fork should be inspected every 2 years for signs of defects 9 It is the responsibility of the user to ensure that only suitably certified cable entry devices will be used when connecting this equipment 10 Technical data Coding Class 1 Div 1 Groups A B C and D For electrical details and pressure ratings refer to Section 2 Installation and Appendix A Ref...

Page 52: ...T 2120 Manufactured in UK Manufactured in UK Manufactured in UK WARNIN ARNING DO NO O NOT OPEN WHEN AN E T OPEN WHEN AN EXPL XPLOSIVE OSIVE ATMOSPHERE MA TMOSPHERE MA Y BE PRESENT Y BE PRESENT REFER T REFER TO INSTR INSTRUCTION UCTION MANU MANUAL AL C A L L B A L E W T E E R M U P S E O R L A C T N U E R T E A R S A T T I I U N D G N R O E C FE L R L A TO L A M E A S UA N L o m s u e o nt r c w o ...

Page 53: ...5 V Ii 32 mA Pi 0 1 W Ci 211 nF Li 0 06 mH NOTE A NAMUR isolating amplifier must be used for compliance with the non incendive approval Instructions specific to hazardous classified locations area installations Model numbers covered 2120XXXCXI5AX 2120XXXCXI5DX 2120XXXCXI6AX 2120XXXCXI6DX X indicates options in construction function and materials The following instructions apply to equipment covere...

Page 54: ...c material the following precautions must be observed a The metallic alloy used for the enclosure material may be at the accessible surface of this equipment in the event of rare accidents ignition sources due to impact and friction sparks could occur b Under certain extreme circumstances the non metallic parts incorporated in the enclosure of the Rosemount 2120 may generate an ignition capable le...

Page 55: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 B 7 Figure B 1 FM Intrinsically Safe Control Drawing ...

Page 56: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 B 8 Figure B 2 CSA Intrinsically Safe Control Drawing ...

Page 57: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 B 9 Figure B 3 CSA Non Incendive Control Drawing ...

Page 58: ...ody Aluminum Alloy ASTM B26 356 T6 LM25 TF or A360 0 or St Steel 316C12 Lid Aluminum Alloy ASTM B26 356 T6 LM25 TF or A360 0 or St Steel 316C12 Switch Stainless steel 316 Type or Hastelloy C276 UNS N10276 or equivalent Switch Filling Perlite Lid Seal Silicone If the equipment is likely to come into contact with aggressive substances it is the responsibility of the user to take suitable precautions...

Page 59: ...n Sensor specific details omitted 13 Cable selection It is the responsibility of the user to ensure that suitably temperature rated cable is used The table below is a guide to selection T Class Cable Temperature Rating T6 85 C T5 100 C T4 135 C T3 160 C WARNIN ARNING DO NO O NOT OPEN WHEN AN E T OPEN WHEN AN EXPL XPLOSIVE OSIVE ATMOSPHERE MA TMOSPHERE MAY BE PRESENT Y BE PRESENT REFER T REFER TO I...

Page 60: ...n the electronics but must not be higher than the Temperature Class for the respective process gas medium It is a special condition of the certification that the temperature of the electronics housing is in the range of 40ºC to 80ºC It must not be used outside this range It will be necessary to limit the external ambient temperature if the process temperature is high See Technical Data below 3 Sui...

Page 61: ...e enclosure of the 2120 may generate an ignition capable level of electrostatic charge Therefore when they are used for applications that specifically require group II category 1 equipment the 2120 shall not be installed in a location where the external conditions are conducive to the build up of electrostatic charge on such surfaces Additionally the 2120 shall only be cleaned with a damp cloth 7 ...

Page 62: ...h Filling Perlite Lid Seal Silicone If the equipment is likely to come into contact with aggressive substances it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected thus ensuring that the type of protection is not compromised Aggressive substances e g acidic liquids or gases that may attack metals or solvents that may affect polymeric mater...

Page 63: ...ly temperature rated cable is used The table below is a guide to selection T Class Cable Temperature Rating T6 85 C T5 100 C T4 135 C T3 160 C WARNING ARNING DO NOT OPEN WHEN AN EXPL O NOT OPEN WHEN AN EXPLOSIVE OSIVE ATMOSPHERE MA TMOSPHERE MAY BE PRESENT Y BE PRESENT REFER TO REFER TO INSTRUCTION INSTRUCTION MANUAL MANUAL FL FLAMEPROOF VIBRA AMEPROOF VIBRA TING FORK LEVEL SWIT TING FORK LEVEL SW...

Page 64: ... equipment 5 If the equipment is likely to come into contact with aggressive substances it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected thus ensuring that the type of protection is not compromised Aggressive Substances e g acidic liquids or gases that may attack metals or solvents that may affect polymeric materials Suitable Precautio...

Page 65: ...x iaD 20 T120 Ta 40 C to 115 C Ex ia IIC T3 Ex iaD 20 T155 Ta 40 C to 150 C Ta the higher of the process or ambient temperature Input parameters Ui 15V Ii 32mA Pi 100mW Ci 12nF Li 60μH Temperature Process Tp 40 C to 150 C External Ta 40 C to 80 C up to Tp 80 C reducing linearly to 50 C at Tp 150 C Materials Refer to Part numbering identification chart ...

Page 66: ...re class depends on the temperature of process medium as following 3 Safety parameters Ui 15 V Ii 32 mA Pi 0 1 W Ci 12 nF Li 0 06 mH 4 The cable entry of Level Switch should be protected to ensure the degree of protection of the enclosure IP 20 GB4208 1993 at least 5 The application of Level Switch with non metallic housing should observe the warning Caution Risk of electrostatic charge build up o...

Page 67: ...sive gas atmosphere Part 13 Repair and overhaul for apparatus used in explosive gas atmosphere GB3836 15 2000 Electrical apparatus for explosive gas atmosphere Part 15 Electrical installations in hazardous area other than mines GB50257 1996 Code for construction and acceptance of electric device for explosive atmospheres and fire hazard electrical equipment installation engineering 11 Label and ce...

Page 68: ...Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 B 20 ...

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Page 72: ...1 T 65 6777 8211 F 65 6777 0947 65 6777 0743 Enquiries AP EmersonProcess com 00809 0100 4030p Reference Manual 00809 0100 4030 Rev DA June 2007 Rosemount 2120 Cover Photos 2120 2120 ext plas_rev 2120_04aa tif Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc VITON is a registered trademark of E I du Pont de Nemours Co Hastelloy and Hastelloy C are registered trademark...

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