Intrinsic Safety Solenoid Valves :- Intrinsic safety valves can be used for applications that require similar explosion class/ignition degree to d2g4 or Exd II BT5 type (explosion-proof enclosure construction). Without need for expensive connection tools and complex installation work that are inevitable for explosion-proof enclosure types, the intrinsic safety valves achieve highly reliable explosion-proof performance. Explosion proof barrier SAF3-5, MTL728+ Intrinsic safety barrier is an explosion-proof device with single channel, shunt-diode DC circuit that enables interactive electric signaling without short circuit while controlling energy transmission in order to prevent ignition in explosive atmosphere. 1.Applicable to Zone 0. 2.When serially connected to a transmission circuit, the barrier protects the circuit and components in hazardous area from being affected by a serious accident in the non-hazardous area. 3.Despite in the hazardous location, conventional wiring is available. 4.Intrinsical proof of operational signal is figured out easily and at lower cost. 5.As SAF3-5 safety barrier has protection circuit, it will be not broken if you wired in the wrong polarity. 6.SAF3-5 safety barrier employ crimping terminal wiring method. Model code SAF3-5 MTL728+ Explosion-proof construction Intrinsic safety construction(exiaⅡb) Intrinsic safety construction(i2g4) Rated voltage DC24V±5% - Max. working voltage Max. allowable voltage Safety retention voltage Rating of a fuse - DC25.5V - DC26.6V AC/DC 250V 50mA Ambient temp. -20~60-10~60 Basic circuit figure
Operating condition 1.Place the valve in non-hazardous area. 3. Use with specified solenoid valves. 4. Allowable inductance for external connection: 10mH / Capacitance: 0.5 μf 4. Allowable inductance for external connection: 1mH / Capacitance: 0.05 μf Explosion proof barrier SAF100-5 Intrinsic safety barrier is an explosion-proof device with single channel, Zener-diode DC circuit that enables interactive electric signaling without short circuit while controlling energy transmission in order to prevent ignition in explosive atmosphere. 1.Applicable to Zone 0. 2.A-class ground is not necessary since the input and output are insulated each other. 3.When serially connected to a transmission circuit, the barrier protects the circuit and components in hazardous area from being affected by a serious accident in the non-hazardous area. 4.Despite in the hazardous location, conventional wiring is available. 5.Intrinsical proof of operational signal is figured out easily and at lower cost. 6.SAF100-5 safety barrier employ crimping terminal wiring method. 7.As SAF100-5 safety barrier has protection circuit, it will be not broken if you wired in the wrong polarity. 8.LED indicates the condition of the input and output. Model code Explosion-proof construction Rated voltage Maximum voltage of a Max. allowable voltage Maximum current of a Electric power of a Ambient temp. SAF100-5 Intrinsic safety construction(exiaⅡc) DC24V±10% DC29.4V DC25.95V 93.8mA 0.689W -20~50
Basic circuit figure Does not need A-class ground. 1.Place the valve in non-hazardous area. 2.Perform single grounding using type A ground. 3. Parts and connections cannot be changed. 4. Use with specified solenoid valves. 5. Allowable inductance for external connection: 2mH / Capacitance: 0.05 μf 454 series 5-port solenoid valves (spool valve) Kind of barrier to combin e i2g4 ExiaⅡB T5 MTL728+ SAF3-5 In the case of other explosionproof barriers and combination *1 Structure of the main valve Return Hold 454S202C 454S203C 454S403C 454S404C 454D202C 454D203C 454D403C 454D404C 454S202 M 454S203 M 454S403 M 454S404 M 454D202 M Pilot spool type 454D203 M 454D403 M 454D404 M Port size Rc1/4 Rc3/8 Rc1/2 Rc1/4 Rc3/8 Rc1/2 Effective area of valve 22mm 2 40mm 2 22mm 2 40mm 2 Working pressure Ambient temp. Explosion-proof standard 0.2~0.7MPa -5~50 Intrinsic safety construction 1. Use with specified safety barrier. For i2g4 explosion-proof valves, use them with MTL728+ safety barrier. For Exia II BT5 explosion-proof valves, use them with the safety barrier SAF3-5 or that meets the conditions described below (note *1). 3. Use 1 explosion-proof barrier for each solenoid valve.
414/416 series 5-port solenoid valves (Spool valve / Ceramic slide valve) Kind of barrier to combin e i2g4 ExiaⅡBT 5 MTL728+ SAF3-5 Return 414S302C 414S303C 414S603C 414S604C 416S302C 416S303C 416S603C 416S604C 414S302 414S303 414S603 414S604 416S302 416S303 416S603 In the case of other explosionproof barriers M M M M M M M and combination* 1 Structure of the main valve Pilot spool type Pilot ceramic slide type 416S604 M Port size Rc1/4 Rc3/8 Rc1/2 Rc1/4 Rc3/8 Rc1/2 Effective area of valve 25mm 2 30mm 2 51mm 2 60mm 2 24mm 2 28mm 2 51mm 2 60mm 2 Working pressure 0.2~0.7MPa 0.12~0.7MPa Ambient temp. -5~50-10~60 Explosion-proof standard Intrinsic safety construction 1. Use with specified safety barrier. For i2g4 explosion-proof valves, use them with MTL728+ safety barrier. For Exia II BT5 explosion-proof valves, use them with the safety barrier SAF3-5 or that meets the conditions described below (note *1). 3. Use 1 explosion-proof barrier for each solenoid valve.
414/416 series 5-port solenoid valves (Terminal block ZA) (Spool valve/ceramic slide valve) SAF3-5 Return Kind of In the case of barrier other to ExiaⅡBT 414S302M 414S303M 414S603M 414S604M 416S302M 416S303M 416S603M 416S604M explosionproof barriers combin 5 -YAi -YAi -YAi -YAi -YAi -YAi -YAi -YAi e and combination* 1 Structure of the main valve Pilot spool type Pilot ceramic slide type Port size Rc1/4 Rc3/8 Rc1/2 Rc1/4 Rc3/8 Rc1/2 Effective area of valve 25mm 2 30mm 2 51mm 2 60mm 2 24mm 2 28mm 2 51mm 2 60mm 2 Working pressure 0.2~0.7MPa 0.12~0.7MPa Ambient temp. -5~50-10~60 Explosion-proof standard Intrinsic safety construction 1. Use with specified safety barrier. For Exia II BT5 explosion-proof valves, use them with the safety barrier SAF3-5 or that meets the conditions described below (note *1). 3. Use 1 explosion-proof barrier for each solenoid valve. note *1 In the case of other barriers and combination Konan 454, 414, 416 series intrinsic safety solenoid valves have passed equipment qualification tests for intrinsic safety solenoid valve. The valves can be used in combination with the safety barrier that meets the following conditions. (The valves can be used with insulation barrier that does not need type A ground.) The barrier used in combination with the valves should be the one that has passed equipment qualification tests for a barrier and that meets the following conditions. Safety retention voltage Maximum voltage of a intrinsic safety circuit Maximum current of a intrinsic Less than 29.4V Less than 93.8mA
safety circuit Performance classification / Group Electric power of a intrinsic safety circuit Performance classification Group Allowable inductance (Lo) and capacitance (Co) for an and relationship between inductance (Lo) and capacitance (Cw) for external connections to the Less than 0.689W ia ⅡB or ⅡC Allowable inductance of a intrinsic safety circuit:lo Li+Lw(mH) Allowable capacitance of a intrinsic safety circuit:co Ci+Cw(μF)