The RAE Systems SP-2104 is a fixed electrochemical toxic gas detector with 4‑20 mA, RS‑485 outputs and LED display, suitable for industrial environments.
The SP-2104 is a fixed‑type toxic gas detector that uses an electrochemical three‑electrode sensor to monitor gases such as carbon monoxide, hydrogen sulfide, sulfur dioxide and hydrogen. It features an explosion‑proof aluminum alloy housing, IP65 protection and a bright LED display for on‑site monitoring.
Key specifications include a 4‑20 mA current loop, RS‑485 digital output and a 30 V 2 A relay, powered by a DC 10‑30 V supply with less than 2 W consumption. The device operates from –20 °C to +50 °C, tolerates 10‑93 % humidity, and meets Ex d IICT6 CMC explosion‑proof certification. This manual is written in Chinese.
| Detection principle | Electrochemical |
|---|---|
| CO detection range | 0–1000 ppm |
| H2S detection range | 0–200 ppm |
| SO₂ detection range | 0–100 ppm |
| H₂ detection range | 0–1000 ppm |
| Standard output | 4‑20 mA |
| Digital output | RS‑485 |
| Relay output | 30 V 2 A |
| Power supply voltage | DC 10‑30 V |
| Maximum load resistance | 260 Ω |
| LED display resolution | 0.01 (range 50‑1000) |
| Protection rating | IP65 |
| Explosion protection | Ex d IICT6 CMC |
| Enclosure material | Aluminum alloy |
| Dimensions (H×W×D) | 239 × 185 × 118 mm |
| Weight | 2200 g |
| Operating temperature | ‑20 °C to +50 °C |
| Relative humidity | 10 %–93 % |
| Atmospheric pressure | 86 kPa–106 kPa |
It operates from a DC supply of 10 V to 30 V.
The enclosure is rated IP65 and meets Ex d IICT6 CMC explosion‑proof certification.