RIKEN KEIKI Explosion-Proof Suction Type Gas Detectors
Model Series: SD-D58, GD-D58, RP-D58
Product Overview
RIKEN KEIKI offers its line of explosion-proof suction type gas detectors, including the SD-D58 series (Smart Type) and GD-D58 series (Direct Transmission Type), alongside the RP-D58 series suction pump. These systems are engineered for reliable gas leak monitoring in hazardous environments, featuring ATEX certification, IP67 rating, and HART communication compatibility.
Key Features
- Explosion-proof structure: Ex d IIB+H2 T4, suitable for use in hydrogen atmospheres.
- Dust-proof and water-proof construction: Equivalent to IP67 protection rating.
- Integrated flow rate detection sensor.
- HART communication compatibility for enhanced data access.
- High-capacity suction pump for efficient gas sampling.
- Unitized design for easy replacement of sensors and pump units.
- One-man maintenance capability (specific to SD-D58 series).
- Certified by Japan Ex, ATEX, and CE Marking.
Model Series
Smart Type: SD-D58 Series
The SD-D58 series detectors output analog signals and contact outputs from the gas detection unit. This series enables highly expandable gas leak monitoring, typically integrated into a system comprising a monitoring room, indicator alarm units (e.g., RIKEN KEIKI RM-5000/RM-6000 series), and the SD-D58 AC/DC gas detector unit.
System Configuration Example: Monitoring Room → Indicator Alarm Unit (SD-D58 AC/DC) → Gas Detector (SD-D58 AC/DC) → Detector. A rotating light may also be part of the system.
Direct Transmission Type: GD-D58 Series
The GD-D58 series is designed for gas leak monitoring by combining an indicator alarm unit with a gas detector. This setup provides a direct transmission solution for gas detection needs, often utilizing RIKEN KEIKI's RM-5000 or RM-6000 series indicator alarm units connected to the GD-D58 AC/DC gas detector unit.
System Configuration Example: Indicator Alarm Units (RM-5000 series, RM-6000 series) → Gas Detector (GD-D58 AC/DC).
Specifications
| Feature | SD-D58 Series (GP/NC/GH) | GD-D58 Series (GP/NC/GH) |
|---|---|---|
| Model | SD-D58-AC, SD-D58-DC | GD-D58-AC, GD-D58-DC |
| Type | GP (Combustible), NC (New Ceramic), GH (Semiconductor: Combustible/Toxic) | GP (Combustible), NC (New Ceramic), GH (Semiconductor: Combustible/Toxic) |
| Detection Principle | Combustible Gas Sensor, New Ceramic Sensor, Semiconductor Sensor | Combustible Gas Sensor, New Ceramic Sensor, Semiconductor Sensor |
| Target Gas | Combustible Gas, Combustible/Toxic Gas | Combustible Gas, Combustible/Toxic Gas |
| Display | 7-segment LED (4-digit), 3-color lamps (Power, Gas Alarm, Fault Alarm). Displays gas concentration, fault codes, maintenance info. | 7-segment LED (4-digit), 2-color lamps (Power, Fault Alarm). Displays detector operation, fault codes (not gas concentration). |
| Detection Range | 0-100%LEL | 0-100%LEL |
| Detection Method | Pump Suction | Pump Suction |
| Suction Flow Rate | ≥ 1.5 L/min | ≥ 1.0 L/min |
| Alarm Setting | 25%LEL (Standard) | 25%LEL (Standard) |
| Alarm Accuracy | Combustible Gas: ±25% of setting; Toxic Gas: ±30% of setting | Combustible Gas: ±25% of setting; Toxic Gas: ±30% of setting |
| Alarm Delay | Within 30 or 60 seconds (depends on gas) | Within 30 or 60 seconds (depends on gas) |
| Fault Alarm/Self-Diagnosis | System error, sensor error, flow rate drop | System error, sensor error, flow rate drop |
| Alarm Contact | NO or NC (user selectable) | NO or NC (user selectable) |
| Contact Capacity | AC250V 0.5A / DC30V 0.5A (Resistive Load) | AC250V 0.5A / DC30V 0.5A (Resistive Load) |
| External Output | DC4-20mA (Linear, Load ≤ 300Ω), Alarm Contact (Gas/Fault Common) | DC4-20mA (Linear, Load ≤ 300Ω), Alarm Contact (Gas/Fault Common) |
| Power Supply | AC100-110V ±10% (50/60Hz) OR DC24V ±10% | AC100-110V ±10% (50/60Hz) OR DC24V ±10% |
| Power Consumption | Max 13VA (AC) / Max 8.7W (DC) | Max 13VA (AC) / Max 8.6W (DC) |
| Dimensions/Weight | Approx. 197(W)×292(H)×140(D)mm (excluding protrusions) / Approx. 5.8kg | Approx. 197(W)×292(H)×140(D)mm (excluding protrusions) / Approx. 5.8kg |
| Operating Temp/Humidity | -20℃ to +50℃ (no rapid changes), ≤ 95% RH (non-condensing) | -20℃ to +50℃ (no rapid changes), ≤ 95% RH (non-condensing) |
| Protection Rating | IP67 equivalent | IP67 equivalent |
| Explosion Proof Structure | Japan Ex: Ex d IIB+H2 T4; ATEX: II 2G Ex db h IIB+H2 T4 Gb | Japan Ex: Ex d IIB+H2 T4; ATEX: II 2G Ex db h IIB+H2 T4 Gb |
| Cable Connection | Specified CVV/CVVS types, various core counts and lengths | Specified CVV/CVVS types, various core counts and lengths |
| Piping Connection | Rc1/8 | Rc1/8 |
Company Information
RIKEN KEIKI Co., Ltd.
Head Office: 2-7-6 Azusawa, Itabashi-ku, Tokyo 174-8744, Japan
Tel: +81-3-3966-1111 (Main) | Fax: +81-3-3558-0043
Website: https://www.rikenkeiki.co.jp/
Product Site: https://product.rikenkeiki.co.jp/
This catalog is printed on FSC Certified Paper.
