Intrinsically Safe Process control training presented by Grant - PowerPoint PPT Presentation

Intrinsically Safe Process control training presented by Grant Paul Novaris Pty Ltd

Hazardous Areas Hazardous area – an area where concentrations of flammable gases, vapors, or dusts may occur. • Offshore platforms • Petrochemical plants • Oil and gas tankers • Gas pipelines • Mines • Flour mills

Hazardous Areas Novaris Intrinsically Safe (IS) range EEx ia IIC T4 . (Type ia, Group 2C gases, Temperature category 4).

Hazardous Areas Gas zones Flammable atmosphere highly likely to be present - Zone 0 may be present for long periods or even continuously (>10%) Flammable atmosphere possible but unlikely to be Zone 1 present for long periods (<10%, >0.1%) Flammable atmosphere unlikely to be present Zone 2 except for short periods of time - typically as a result of a process fault condition. (<0.1%)

Hazardous Areas Gas groups Group Representative Gases I All Underground Coal Mining. Firedamp (methane) IIA Industrial methane, propane, petrol and the majority of industrial IIB Ethylene, coke oven gas and other industrial gases IIC Hydrogen, acetylene, carbon disulphide IIC marked equipment can be used for both IIA and IIB

Hazardous Areas Temperature classification (Auto-ignition) Hazards which will not ignite at T-Class temperatures below: Gas Temperature Methane 580 °C T1 450°C Hydrogen 560 °C T2 300°C Propane 493 °C Ethylene 425 °C T3 200°C Acetylene 305 °C T4 135°C Naphtha 290 °C Carbon disulfide 102 °C T5 100°C T6 85°C

Hazardous Areas – Type of Protection Equipment Code Description Suitable for zones Ex ia Intrinsic safety 'ia' 0, 1, 2 Ex ib Intrinsic safety 'ib' 1,2 Ex ic Intrinsic Safety 'ic' 2 Ex d Flameproof protection 1,2 Ex p Purge/pressurized protection 1,2 Ex px Purge/pressurized protection 'px' 1,2 Ex py Purge/pressurized protection 'py' 1,2 Ex pz Purge/pressurized protection 'pz' 2 Ex e Increased safety 1,2 Ex m Encapsulation 1,2 Ex ma Encapsulation 0,1,2 Ex mb Encapsulation 1.2 Ex mc Encapsulation 2 Ex o Oil immersion 1,2 Ex q Sand / powder (quartz) filling 1,2 Ex n Type - n protection 2 Ex s Special protection Normally 1 and 2

Hazardous Areas Equipment category Category 1 equipment may be used in zone 0, zone 1 or zone 2 areas Category 2 equipment may be used in zone 1 or zone 2 areas Category 3 equipment may only be used in zone 2 areas

Hazardous Areas Novaris Intrinsically Safe (IS) range EEx ia IIC T4 . (Type ia, Group 2C gases, Temperature category 4).

Signal Line Protection for Process control • Plug in surge arrester module • Only 7mm wide • High Energy Design • Multistage Protection • IECEx ia IIC T4 certified • Failsafe design • Suitable for all signalling applications

SL Circuit Diagram E1 L1 LINE LOAD L2 E2

Surge MOV 2 nd MOV GDT

Voltage vs. Frequency

Threaded Signal Line Protectors • Protection for 2, 3 and 4 wire process control transmitters • All mode protection • Does not affect calibration • IECEx ia IIC T4 Certified • M20x1.5 (IECEx Exd Certified) • ½” NPT • ¾” NPT

SLT Circuit Diagram L1 L2 SCN

SSP6A Series Surge Protector • Plug in surge arrester module • Only 7mm wide • 9.6kA Imax MOV Protection • IECEx ia IIC T4 certified • Up to 6A pass through current

SSP6A Circuit Diagram E1 L1 LINE LOAD L2 E2

Analogue and Digital I/O Instrument Enclosure Marshalling/System Cabinet SL-36-G SLT1-36-M/NXX PLC/SCADA I/O + L1 E1 I/O - E2 L2 Cabinet earth

SSP6A - 250mA to 6A Instrument Enclosure Marshalling/System Cabinet SSP6A-26-G SLT1-36-M/NXX PLC/SCADA I/O + L1 E1 I/O - E2 L2 Cabinet earth

4-20mA loop Instrument Enclosure Marshalling/System Cabinet SL-420-G SLT1-36-M/NXX PLC/SCADA I/O + L1 E1 I/O - E2 L2 Cabinet earth

Interposing Relay Protection Marshalling/System Cabinet Instrument Enclosure Interposing Relay SLT1-36-M/NXX CH 0 PLC/SCADA 6A 24V + E1 L1 0V - E2 L2 SSP6A-26-G 24VDC PS Cabnet earth

Resistive Temperature Detectors – 4 Wire Marshalling/system cabinet SLT4-RTD-M/NXX SL-RTD-G Instrument Enclosure E1 L1 E2 L2 Control RTD Instrumentation Or PLC E1 L1 E2 L2 Cabinet earth

Resistive Temperature Detector – 3 Wire & 4 Wire Marshalling/system cabinet Marshalling/system cabinet SLT4-RTD-M/NXX SLT4-RTD-M/NXX SL-RTD-G SL-RTD-G Instrument Enclosure Instrument Enclosure E1 L1 E2 L2 Control RTD E1 L1 Instrumentation Control RTD E2 L2 Or PLC Instrumentation E1 L1 Or PLC E2 L2 Cabinet earth Cabinet earth

HART over 4-20mA Loop Instrument Enclosure Marshalling/System Cabinet SL-DH-G SLT1-36-M/NXX PLC/SCADA I/O + E1 L1 I/O - E2 L2 Cabinet earth

RS232 Marshalling/System Cabinet Marshalling/System Cabinet SL-DH-G SL-DH-EC90 PLC/SCADA PLC/SCADA TX L1 L1 RX E1 E1 RX TX E2 L2 L2 E2 Common Common SCN SCN Cabinet earth Cabinet earth

RS485 Marshalling/System Cabinet Marshalling/System Cabinet SL485-EC90 SL485-EC90 PLC/SCADA PLC/SCADA TX/RX L1 E1 L1 E1 TX/RX TX/RX TX/RX E2 L2 L2 E2 SCN Screen SCN Screen SCN SCN Cabinet earth Cabinet earth

Multidrop RS485 Marshalling/System Cabinet Marshalling/System Cabinet SL485-EC90 SL485-EC90 PLC/SCADA PLC/SCADA Tx/Rx+ E1 L1 L1 E1 Tx/Rx+ Tx/Rx- Tx/Rx- E2 L2 L2 E2 Screen SCN SCN Screen SCN SCN Cabinet earth Cabinet earth Marshalling/system cabinet SL485-EC90 Marshalling/System Cabinet SL485-EC90 L1 E1 Tx/Rx+ L2 E2 Tx/Rx- PLC/SCADA SCN SCN Tx/Rx+ L1 E1 Tx/Rx+ E1 L1 Tx/Rx- L2 E2 Tx/Rx- E2 L2 Screen SCN SCN SCN Screen SCN Cabinet earth Cabinet earth

RS422 Marshalling/system cabinet Marshalling/system cabinet SL485-EC90 SL485-EC90 E1 L1 L1 E1 Tx+ Rx+ Tx- E2 L2 L2 E2 Rx- SCN SCN SCN SCN Rx+ L1 L1 Tx+ E1 E1 Rx- E2 L2 L2 E2 Tx- Screen SCN SCN Screen SCN SCN Cabinet earth Cabinet earth

Signal reference table Signal/Protocol PLC/Cabinet Meter/Instrument ±5V Analogue or Digital SL7V5-G or SSP6A-14-G SLT1-7V5-M/NXX ±12V Analogue or Digital SL18-G or SSP6A-14-G SLT1-18-M/NXX ±24V Analogue or Digital SL36-G or SSP6A-26-G SLT1-36-M/NXX ±48V Analogue or Digital SL68-G or SSP6A-65-G SLT1-68-M/NXX ±110V Analogue or Digital SSP6A-130-G SDT2-130-M/NXX 4-20mA Loop SL420-G (also SL420i-G) SLT1-36-M/NXX 4 Wire RTD 2 x SL-RTD-G SLT4-RTD-M/NXX 3 Wire RTD 2 x SL-RTD-G SLT4-RTD-M/NXX 2 Wire RTD SL-RTD-G SLT4-RTD-M/NXX HART SL-DH-G SLT1-36-M/NXX RS232 SL-DH-G SL-DH-EC90 RS485 SL485-EC90 (also SL485i-EC90) SL485-EC90 RS422 2 x SL485-EC90 2 x SL485-EC90 Profibus DP SL485-EC90 SL485-EC90 Profibus PA SSP6A-38-G SSP6A-38-G Profinet UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Modbus Check physical layer Check physical layer Modbus – TCP UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Industrial Ethernet Network UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Computer Network (Ethernet) UTP-RJ45-24CAT6 UTP-RJ45-1CAT6