Menu
Menu
Menu
Explosion proof
ATEX / IECEx, Japan Ex, FM, cFM
Performance
IEC/EN 60079-29-1, EN 45544-2, EN 50104
Others
CE(ATEX/EMC/RoHS), IP66/67, HART, SIL2, MED
4-20mA + HART
MODBUS (RS-485)
Alarm outputs (3 contacts)
・Alarm1
・Alarm2
・Fault alarm
Chassis
Stainless Steel SCS14 (equivalent to SS316)
Performance
-40 to 70 ℃(-40 to 158℉), IP66/67, Three-year warranty
Options
Splash guard, Weather cover, Filters, Lightning rod, etc
The SD-3 Series of fixed explosion-proof gas detectors detect combustible gas and toxic gas leaks and
continuously monitor oxygen levels in the surrounding atmosphere.
These global products are certified explosion-proof in various countries (some scheduled) and meet the
requirements of various international standards, including IEC/EN performance and SIL 2 certification.
| Model | Diffusion type | SD-3RI | SD-3NC | SD-3GH | SD-3GHS | SD-3SP | SD-3EC | SD-3ECS | SD-3ECB |
| Suction type | SD-3DRI | SD-3DNC | SD-3DGH | SD-3DGHS | SD-3DSP | SD-3DEC | SD-3DECS | SD-3DECB | |
| Detection principle | Non-dispersive infrared type | New ceramic type (catalytic type) | Semiconductor type | Hot-wire semiconductor type | Electrochemical type | ||||
| Detection target gas | Combustible gas/toxic gas/oxygen; detection range depends on detection target gas. | ||||||||
| Display | 7-segment LED (5 digits) and 3-color lamps (red/green/yellow) | ||||||||
| Sampling method | Diffusion/Suction (introduced via an external unit) | ||||||||
| Set flow rate | 0.4 – 1.5 L/min | ||||||||
| Gas alarm type | Two-step alarm (H-HH or H-L or L-LL) | ||||||||
| Fault alarm/self-diagnosis | System abnormality (E-9)/sensor abnormality (E-1) | ||||||||
| Warning | Sensor life assessment/clock abnormality diagnosis/communication diagnosis/sensor warning | ||||||||
| Gas concentration output | Standard | Gas concentration output (4 – 20 mA with HART), 4 – 20 mA DC (non-insulated, linear output), load resistance 600 Ω or less, maximum resolution 250 divisions (depending on specifications) | |||||||
| Option | RS-485 (half duplex) | ||||||||
| Contact output (optional) | SPDT (2 alarms, 1 fault output operation), 250 V 2 A AC, 30 V 1 A DC (resistance load), minimum load 5 V 0.1 A DC | ||||||||
| Power supply | 24 V DC (18 V – 30 V DC) | ||||||||
| Power consumption | Maximum 3.8 W | Maximum 4.5 W | Maximum 4.5 W | Maximum 4.5 W | Maximum 3.5 W | Maximum 2.8 W | Maximum 2.8 W | Maximum 3.1 W | |
| Cable connectors | Japan Ex: Pressure-proof seal cable glands (M20 × 1.5/M25 × 1.5) (Compatible cable diameter 6.0 – 16.0 mm) ATEX/IECEx: M25 × 1.5, adapters (option): NPT3/4, NPT1/2, M20 × 1.5 | ||||||||
| Operating temperature/ humidity range | Japan Ex: -20 – +70 °C (no sudden changes), ATEX/IECEx: -40 – +70 °C (no sudden changes) 0 – 95 %RH or less (no condensation) or, if restrictions apply, in accordance with sensor specifications | ||||||||
| Housing material | SCS14 stainless steel (equivalent to SUS316) | ||||||||
| Protection level | IP66/67 equivalent | ||||||||
| External dimensions (excluding cable gland projections) | Diffusion type | Approximately 171 (W) × 277 (H) × 127 (D) mm | Approximately 171 (W) × 322 (H) × 127 (D) mm | ||||||
| Suction type | Approximately 171 (W) × 289 (H) × 127 (D) mm | Approximately 171 (W) × 334 (H) × 127 (D) mm | |||||||
| Weight (excluding cable glands) | Diffusion type | Approximately 6.7 kg | Approximately 7.3 kg | ||||||
| Suction type | Approximately 7.0 kg | Approximately 7.6 kg | |||||||
| Explosion-proof construction | Flame-proof enclosure | Flame-proof enclosure + Intrinsically safe explosion- proof construction | |||||||
| Explosion-proof certification | ATEX | II 2G Ex db IIC T6/T5 Gb | II 2G Ex db IIC T5/T4 Gb | II 2G Ex db IIC T5/T4 Gb | II 2G Ex db IIC T6/T4 Gb | II 2G Ex db IIC T5/T4 Gb | II 2G Ex db IIC T4 Gb | II 2G Ex db IIC T4 Gb | II 2G Ex db ia IIC T4 Gb |
| IECEx | Ex db IIC T6/T5 Gb | Ex db IIC T5/T4 Gb | Ex db IIC T5/T4 Gb | Ex db IIC T6/T4 Gb | Ex db IIC T5/T4 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db ia IIC T4 Gb | |
| Japan Ex | Ex db IIC T5 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db IIC T4 Gb | Ex db ja IIC T4 Gb | |
| Functional safety IEC 61508* | SIL2 compliant (SIL3 compliant with redundancy) | SIL2 compliant (SIL3 compliant with redundancy) | – | – | – | SIL2 compliant (SIL3 compliant with redundancy) | SIL2 compliant (SIL3 compliant with redundancy) | Pending | |
| CE marking | ATEX Directive, EMC Directive, RoHS Directive | ||||||||
| HART communication | HART7 | ||||||||
