Drager Flame 1750 H2 Flame Detector
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Dräger Flame 1750 H2 Flame Detector
The Dräger Flame 1750 H2 is a triple infrared (IR3) flame detector specifically designed for hydrogen fire detection. It provides fast, reliable detection with excellent immunity to false alarms and delivers dependable performance even in extreme environmental conditions.
Features
- Triple infrared (IR3) technology for hydrogen flame detection.
- Detects 1 m hydrogen flames up to 40 m away within 5 seconds.
- Designed specifically for hydrogen fire applications.
- Excellent immunity to false alarms from hot CO₂ and welding.
- HART and RS-485 communication interfaces.
- Low power consumption.
- Automatic heated window to prevent icing and condensation.
- Operating temperature range from -60°C to +85°C.
- Advanced Optical Verification (AOV) self-test.
- Automatic monitoring of optics and electronics.
- Tri-colour LED status indicator.
- Available in aluminium and stainless steel housings.
- SIL 2 certified to IEC 61508.
Status Indicators
- Green LED – Normal operation.
- Yellow LED – Fault condition.
- Red LED – Fire alarm.
Benefits
- Fast hydrogen flame detection.
- High immunity to false alarms.
- Reliable operation in harsh environments.
- Automatic self-testing for increased safety.
- Easy installation and maintenance.
Order Information
- 3724447 – Dräger Flame 1750 H2, Aluminium, 2 × M25.
- 3724445 – Dräger Flame 1750 H2, Aluminium, 2 × 3/4" NPT.
- 3724446 – Dräger Flame 1750 H2, Stainless Steel, 2 × M25.
- 3724444 – Dräger Flame 1750 H2, Stainless Steel, 2 × 3/4" NPT.
Accessories
- 4209307 – Dräger FS-5000 Flame Simulator.
- 3718732 – Standard Swivel Mount (316 Stainless Steel).
- 3701298 – Marine Swivel Mount (316 Stainless Steel).
- 3701303 – Density Set Detector (Metric).
- 3701299 – Sun Protection Shield.
- 3701300 – 2" Pole Mount Clamp.
- 3701301 – 3" Pole Mount Clamp.
- 3701302 – 4" Pole Mount Clamp.
- 3724460 – Air Shield for Stainless Steel Flame Detectors.
- 3724461 – Air Shield for Aluminium Flame Detectors.
- 3724462 – Duct Mount (Stainless Steel).
- 3724463 – Adaptor Bracket (Stainless Steel).
- 3724464 – USB HART Modem.
- 3724465 – Charger for FS-5000 Flame Simulator.
- 3724466 – USB to RS-485 Converter.
Detector Characteristics
| Parameter | Specification |
|---|---|
| Model | Dräger Flame 1750 H2 |
| Type | Explosion-proof IR flame detector |
| Spectral Range | Three wavelengths in the range from 2 μm to 4 μm |
| Field of View | Horizontal: 90° Vertical: 90° |
| Response Time | 4 seconds (typical) |
| Sensitivity Settings | Standard (30 m) and High (40 m) |
Detection Range
| Fuel | Range |
|---|---|
| Hydrogen | 40 m (131 ft) |
| n-Heptane | 12 m (30 ft) |
| Methane | 30 m (100 ft) |
Note: Detection range based on a 0.1 m² (1 ft²) fire pan or a 0.6 m (3 ft) flare.
Electrical Specifications
| Parameter | Specification |
|---|---|
| Relay Outputs | Alarm and Fault |
| Signal Output | 0–20 mA |
| Communication | RS485, HART® 7 |
| Supply Voltage | 24 VDC nominal (18–32 VDC) |
| Power Consumption | Minimum 3 W / Maximum 12 W with heating |
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Housing Material | Aluminium or Stainless Steel, powder-coated |
| Cable Entry | Dual M25 or ¾″ NPT |
| Weight | Aluminium: 2.5 kg (5.5 lbs) Stainless Steel: 6 kg (13.2 lbs) |
| Protection Rating | IP66, NEMA 4X |
Environmental Conditions
| Parameter | Specification |
|---|---|
| Operating Temperature | -60°C to +85°C (-76°F to +185°F) |
Approvals & Certifications
| Certification | Approval |
|---|---|
| ATEX | Ex II 2 G Ex db IIC T4 Gb IP66 |
| IECEx | Ex II 2 G Ex db IIC T4 Gb IP66 |
| FM/FMC | Class 1 Zone 1 AEx db IIC T4 Class 1 Div. 1, Groups B, C, D T4 |
| EAC TR CU | Requested |
| CCCF | Requested |
| INMETRO / PESO | Available on request |
| Functional Safety | SIL2 (IEC 61508-1-3) |
| Performance Certification | EN 54-10 (VdS) |
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