The D171 is a stand-alone fire & flame detector in a watertight NEMA 4X (IP66, 67) and explosion-proof Stainless Steel enclosure designed for indoor/outdoor Class I, Div. 1 (Zone 1) Installations. The Detector is supplied with Alarm / Auxiliary / Fault relays, 4-20 mA analog and RS485 outputs. The detectors can store 200 events and 6 FireGraphs in its FRAM memory.
Our D171 1IR+UV Multi -Spectrum Flame Detectors are the most advanced optical flame detectors designed and optimized to respond to both Hydrocarbon based fires while rejecting False Alarm sources.
The D171 model senses UV radiation in the Ultraviolet spectrum and infrared radiation in one discrete band of the IR spectrum for detecting fires. Flame response and false source rejection for theD171 model is accomplished by utilizing the Convolution Method and Advanced DSP (Digital Signal Processing) in conjunction with hard coded Algorithms identifying specific wavelengths of Energy.
The Detectors is able to respond to Hydrocarbon fires at distances of 100+ feet, All this while rejecting False sources.
Multi-Spectrum Detection – 1IR + UV design optimized for Hydrocarbon fires with highest false alarm rejection.
Vesratile Outputs – Alarm, fault, auxiliary relays, 4–20 mA analog, and RS485 ModBus.
Event Logging – 200 event logs with 6 FireGraphs stored in FRAM memory.
Adjustable Sensitivity – Multiple selectable levels ensure accurate detection in varied environments.
Automatic Self-Test – OptiRadar® technology continuously checks circuitry and optical path integrity.
General
Field-of-View: 90° Field-of-View
Spectral Sensitivity: UV 180–260 nm, IR 4.3–4.6 µm (1 discrete band)
Detection Range: Model D171 – 100 ft (30.5 m) n-Heptane fire
Response Time: Alarm: 3–5 seconds
Sensitivity Range: Low / High
Electrical
Operating Voltage: 24 VDC nominal (18–31 VDC), regulated
Wiring: 12–22 AWG (3.3–0.33 mm²)
Conduit Entries: Standard: 2 × M25, optional M25 × ¾” NPT adapter
Power Consumption:
Standby: 60 mA @ 24 VDC
Alarm: 90 mA @ 24 VDC
Heater (Optional): 120 mA additional
Output Relays: Alarm / Auxiliary / Fault, SPDT – contacts rated 2A @ 24 VDC
Alarm & Auxiliary relays: De-energized
Fault relay: Energized
Auxiliary relay settings: 0.3, 3, 10, 20 seconds
Visual Indications: Green LED – Normal, Red LED – Alarm, Amber LED – Fault
Communication: RS485 ModBus
Analog Output: 0–20 mA stepped source
Mechanical
Enclosure Type: 316 Stainless Steel
Weight: 10 lbs (4.5 kg)
Optional Mounting: Stainless steel swivel arm, 6.6 lbs (3 kg)
Environmental
Enclosure Rating: NEMA 4 & 4X, IP66/IP67
Temperature Range: -40 to +185°F (-40 to +85°C)
Humidity Range: 5–95% RH, non-condensing
Vibration: Meets or exceeds MIL-STD 810C
Onshore & Offshore Oil and Gas Facilities
Refineries and Cogeneration Plants
Compressor Stations
Chemical and Hydrogen Plants
Crude Oil and Products Tank Farms LPG / LNG Facilities
Fuel Terminals
Marine Fuel Loading & Unloading
Airports & Aircraft Hangars
Industrial Warehouses
Battery Rooms & Charging Facilities
Paint and Solvent Storage Facilities
Incinerators
Waste Disposal Facilities
Power Plants
DA-001: 316 S.S. Swivel Mounting Arm Assembly
