Product Short Description
Product Overview:
The AG1-SDT1-24U-DEN-A55 is a single-channel toxic gas detection controller designed for continuous monitoring of combustible and toxic gases in industrial environments. It is a DIN-rail mounted, 24V DC powered unit with 4–20 mA output, intended for integration into safety instrumented systems (SIS) and gas detection networks.
Description
Technical Specifications:
| Parameter | Value |
|---|---|
| Power Supply | 24V DC (18–30V DC) |
| Output Signal | 4–20 mA, 2-wire loop powered |
| Channel Count | 1 (Single channel) |
| Alarm Relays | 2 programmable relays (NO/NC) |
| Sensor Input | Compatible with 4–20 mA toxic/combustible sensors |
| Dimensions | 100 x 110 x 56 mm (approx.) |
| Mounting | DIN rail (35mm) |
| IP Rating | IP65 (front panel) |
| Operating Temperature | -25°C to +55°C |
| Certifications | ATEX, IECEx, SIL 2 capable |
Functional Features:
- Dual relay output for high/low alarm and fault conditions
- 4–20 mA loop-powered — no separate sensor power required
- HART protocol support for smart sensor communication
- Local LCD display with real-time gas concentration readout
- Event logging with up to 256 alarm events
- Fail-safe design — defaults to alarm on sensor or power failure
Applicable Industries: Oil & Gas, Chemical Processing, Mining, Offshore Platforms, Power Generation, Water Treatment
Installation Requirements:
- Mount on standard 35mm DIN rail
- Ensure 24V DC supply within 18–30V range
- Cable sensor loop with shielded twisted pair (max 1000m)
- Ground the controller chassis per local electrical codes
Key Advantages:
- SIL 2 / SIL 3 capable when used with certified sensors
- Wide operating temperature range (-25°C to +55°C)
- ATEX Zone 1/2, Zone 21/22 certified for hazardous areas
- Compact DIN-rail form factor saves panel space
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