Drager Flame 1500 Flame Detector

  • Triple IR sensor
  • Detects hydrocarbon fires
  • Under 4 seconds response time

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The Drager Flame 1500 flame detector uses a triple IR sensor to detect hydrocarbon fires, even at great distances, with excellent immunity to false alarms. It is FM approved.

Fast and reliable flame detection

The Drager Flame 1500 has three infrared sensors that allow it to detect hydrocarbon-based fires even from a distance. This high level of reliability makes it compliant with IEC 61508 safety integrity requirements, as per SIL2 standards. It has a HART interface that can connect directly to the fire alarm system. Additionally, the Flame 1500 has a low power consumption feature.

Prevention of false alarms

​The Flame 1500 measures infrared radiation in three different wavelengths and compares them with the reference value of CO2 produced during the combustion of hydrocarbons. In combination with the analysis of the flame’s flickering, the complex algorithm identifies a fire and excludes sources of interference. This way, the Flame 1500 reliably prevents false alarms caused by possible fault sources such as welding work or black body radiation.

Robust and resistant

The powder-coated housing made of stainless steel or aluminium is very robust and weatherproof. The viewing window is heated to protect against icing and fogging. This allows you to operate the Flame 1500 reliably under various environmental conditions.

Simple check

The Optical Verification Test (OVT) automatically checks the electronics and optics of the Flame 1500 without affecting the field of view. It does not require a reflective bridge for the OVT, which reduces the failure rate caused by dirt and insect buildup. The three-colour LED on the front lets you quickly see the unit’s status. Green stands for normal operation, yellow indicates a fault and red signals a fire alarm.

Order Information

3721519 Drager Flame 1500, Aluminum, 2 x M25
3721517 Drager Flame 1500, Aluminum, 2 x ¾” NPT
3721518 Drager Flame 1500, Stainless Steel, 2 x M25
3721516 Drager Flame 1500, Stainless Steel, 2 x ¾” NPT


4209307 Drager FS-5000
3718732 Bracket Standard – 316 stainless steel
3701298 Bracket Marine – 316 stainless steel
3701303 Sealing Kit Detector – metric
3701299 Sunshield – Flame 1×00/3×00/5×00
3701300 Mount Kit – 2″ pole
3701301 Mount Kit – 3″ pole
3701302 Mount Kit – 4″ pole

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Title Size
flame-1500-Datasheet 105 KB

Additional information

Weight 0.09 kg


Dräger Flame 1500
Type Explosion-proof multi-spectrum (triple) IR flame detector
Spectral range Three wavelengths in the range from 3 μm to 8 μm
Field of view Horizontal 90°, vertical 90°
Response time 4 seconds (typical)
Sensitivity settings Low 15 m, Medium 30 m (standard) and High 60 m
Measuring range* n-Heptane/gasoline 60 m (200 ft)
Methanol 42 m (136 ft)
Methane 50 m (165 ft)
*Fire pan 0.1 m²(1ft²), flaring fire 0.6 m (3 ft)
Electrical data
Relay Alarm and fault
Signal output 0 to 20 mA
Communication RS485, HART® 7
Supply voltage 24 VDC nominal (18 to 32 VDC)
Power consumption Minimum 3 W / maximum 12 W with heating
Material Aluminium or stainless steel, powder-coated
Cable gland Dual M25 or ¾”NPT
Weight 2.5 kg (5.5 lbs.) aluminium or 6 kg (13.2 lbs.) stainless steel
Protection class IP66, NEMA 4X
Environmental conditions
Temperature -60 to +85 °C (-76 to +185 °F)
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, etc. On request
Functional Safety SIL2 certified

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