Dräger Flame 2500 (IR3) Flame Detector
Overview
The Dräger Flame 2500, also known as the IR3 model, is an explosion-proof triple infrared flame detector designed for hydrocarbon-based fires. Three infrared sensors in the unit watch the 4 to 5 micrometre band, which lets the detector recognise the radiation signature of burning fuel at long range while staying quiet when harmless heat sources are in view. Dräger specifies a typical response time of 5 seconds and a sensitivity range that reaches up to 65 metres for a 0.1 square metre n-heptane pan fire.
Seven Star LLC supplies the Dräger Flame 2500 to refineries, tank farms, offshore and onshore production facilities, power plants and industrial sites across Oman and the GCC. As a trusted supplier of Dräger fire and gas safety equipment, we provide engineering support in Muscat, including help with detector placement, field of view and the choice of output and enclosure options.
Triple IR Detection Principle
Flames emit characteristic infrared radiation, and burning hydrocarbons produce a strong emission around 4.3 micrometres from hot carbon dioxide. The Dräger Flame 2500 measures three separate infrared bands inside the 4 to 5 micrometre range and compares them against each other. Comparing the channels is the general approach triple IR detectors use to tell a real fire from a steady hot surface or a reflection, which is why they can suppress false alarms.
According to Dräger, the detector is immune to common interference sources such as welding work and hot CO2 emissions, and its sensitive detection prevents alarms from fires outside the intended area. The field of view is 100 degrees horizontally and 95 degrees vertically, and four selectable sensitivity settings let engineers match the detection distance to the hazard, from 15 metres at the lowest setting to 65 metres for a gasoline or n-heptane fire at the highest.
Engineering Design of the Dräger Flame 2500
The housing is made from SS316L stainless steel, with a heavy-duty copper-free aluminium option with red epoxy finish available on ATEX-approved versions. The enclosure measures about 101.6 x 117 x 157 mm, weighs 2.8 kg in stainless steel (1.3 kg in aluminium) and carries IP66, IP67 and NEMA 250 type 6P protection. Two cable entries are provided, either 3/4 inch NPT or M25 x 1.5 mm.
On the Dräger Flame 2500, the viewing window is heated to prevent icing and fogging, and the Built-in-Test (BIT) function checks the electronics and the optics automatically; a manual test can also be started. A tri-colour LED on the front gives quick status feedback: green for normal operation, yellow for a fault and red for a fire alarm. Outputs include a 0 to 20 mA stepped current signal, HART, an RS-485 Modbus link and alarm, fault and auxiliary relays, so the detector can feed a fire panel or a plant control system directly.
Key Features
The Dräger Flame 2500 offers the following capabilities:
- Triple IR sensing for hydrocarbon fires over long distances, with up to 65 metres for n-heptane or gasoline.
- High immunity to false alarms from welding, hot CO2 and other interference sources.
- Safety integrity level SIL 2 certified by TUEV according to EN 61508.
- Heated window to protect against icing and fogging.
- Automatic and manual Built-in-Test of electronics and optics.
- A 0 to 20 mA stepped output, HART and RS-485 Modbus communication.
- Alarm, fault and auxiliary relays with volt-free SPST contacts rated 2 A at 30 V DC.
- A wide operating temperature range of -55 to +75 °C, with an option for -55 to +85 °C.
Industrial Applications
The Dräger Flame 2500 is suited to locations where hydrocarbon pool or spray fires are the main hazard: crude oil and fuel storage, loading racks, process units, compressor houses, helidecks and pipeline terminals. The sensitivity data of the Dräger Flame 2500 covers fuels including n-heptane, gasoline, diesel, kerosene, ethanol, methanol, isopropyl alcohol, methane and LPG, and polypropylene, which helps safety engineers prove coverage for the specific products stored or handled on site.
Seven Star LLC works with HSE teams and EPC contractors in Muscat, the Sohar and Salalah economic zones and across the GCC to review detector layouts, accessories and spare parts. The wide temperature range of the Dräger Flame 2500 suits exposed Omani sites, and accessories such as the weather cover, air shield, tilt mount and laser pointer simplify installation and commissioning where sand, dust or direct sun are expected.
Technical Specifications
Published data for the Dräger Flame 2500, summarised from the Dräger product data sheet:
| Parameter | Specification |
|---|---|
| Model | Dräger Flame 2500 (IR3) |
| Type | Explosion-proof IR flame detector for hydrocarbon-based fires |
| Spectral response | Three IR bands, 4 to 5 µm |
| Field of view | Horizontal 100 °; vertical 95 ° |
| Response time | Typically 5 seconds |
| Detection range | 4 sensitivity settings, 15 m to 65 m for a 0.1 m² n-heptane pan fire |
| Output signals | 0 to 20 mA (stepped), HART; fault 0 mA, BIT fault 2 mA, normal 4 mA, warning 16 mA, alarm 20 mA |
| Relays and serial | Alarm, fault and auxiliary SPST, 2 A at 30 V DC; RS-485 Modbus |
| Power supply | 24 V DC nominal (18 to 32 V DC) |
| Power consumption | Standby max 90 mA (110 mA with heated window); alarm max 130 mA (160 mA) |
| Temperature | -55 to +75 °C operating; -55 to +85 °C option and storage |
| Enclosure | SS316L (aluminium option on ATEX versions); 2 x 3/4″ NPT or 2 x M25 x 1.5 mm |
| Weight / dimensions | 2.8 kg stainless steel, 1.3 kg aluminium; 101.6 x 117 x 157 mm |
| Protection | IP66 and IP67, NEMA 250 6P |
| Approvals | ATEX and IECEx Ex db eb op is IIC T4 Gb; FM/FMC/CSA Class I Div 1; SIL 2 (TUEV, EN 61508); EN 54-10 (VdS); FM 3260 |
Ordering Codes and Accessories
The Dräger Flame 2500 is ordered by variant. Dräger lists 17 order numbers from 6813910 (IR3-111SC) to 6813955 (IR3-312SF), including 6813911, 6813912, 6813913, 6813914 and 6813915 in the SC group, 6813934 to 6813940 in the AC group (6813940 is the IR3-411AC) and 6813952 to 6813955 in the SF group. Accessories include the Flame Simulator FS-1100 (6813973), air shield (6813977), duct mount (6813978), tilt mount (6813979), stainless steel weather cover (6813189), ABS weather cover (6813190), laser pointer (6813890), 2 inch and 3 inch pole mounts (6813322, 6813323) and the USB RS-485 kit (6813994). Please send us the Dräger Flame 2500 code you need and we will confirm availability.
Related Dräger Flame Detection
To compare with another triple IR model already in our catalogue, see the Dräger Flame 1500 (IR3) flame detector, browse the Dräger brand page or visit our flame detection category.
If hydrogen fires are also a hazard, see the Dräger Flame 2700 Multi-IR flame detector.
Request a Quote for Dräger Flame 2500
To request a formal quotation, check current availability and lead time or obtain the datasheet for the Dräger Flame 2500, contact the instrumentation division at Seven Star LLC. We are a trusted supplier of Dräger products in Oman and the GCC, and our engineers can help you size detector quantities, accessories and output options.
- Datasheet Dräger Flame 2500 (IR3) Product Information and Data Sheet Download
Dräger gas detection product families listed here
Fixed detection is covered by the Polytron line: the Polytron 8100 EC for toxic gases and oxygen with electrochemical sensors, the Polytron 8200 CAT for flammable gases with a catalytic sensor, the Polytron 7000 and the PIR 7000 point infrared detector for hydrocarbons. Dräger flame detectors on this page are the Flame 1500 and Flame 2500 (triple infrared) and the Flame 2700 (multi-infrared). Portable instruments include the Pac 8000 single-gas detector, the X-am 2500 for one to four gases and the X-am 8000 for up to seven. Short-term colorimetric tubes such as Hydrogen Sulfide 100/a (CH29101) are listed with the analyzer accessories.Where Dräger detectors are used
Polytron transmitters and PIR 7000 heads are found on wellhead and gathering facilities, gas plants, refineries, tank farms, LNG and petrochemical units, and in water treatment chlorine rooms. Portable Dräger gas detectors serve confined space entry, hot work permits and personal H2S monitoring, which is routine on sour fields in the GCC. Detector tubes remain a simple spot check where an electronic sensor is not available for the gas.Ordering Dräger equipment: what we need
Dräger identifies most items by a seven-digit part number, such as 8101211, and that number is the most direct route to the right quotation. For a fixed transmitter, add the target gas, measuring range, output (4-20 mA, HART or relays), housing material, cable entry thread and the required hazardous-area approval. For portables, list the sensor configuration, pump or diffusion mode and the charger or calibration accessories needed. For tubes, give the gas and the range printed on the box.Browse Dräger products by category: Fire & Gas Detector, Gas Analyzer Accessories.
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