Flame Detector Explosion proof with Fiber Optic model NFDF-25110-N1Ex

This model is one of the fiber optic flame detectors which is connected to furnace or combustion chamber through optical fiber; and in this way, the flame reflected light is focused on light sensor. The light sensor produces electrical signals proportional to the light received, and then, after measuring flame light specifications, and processing by system processors based on specific algorithm, the data are put in system outputs.

Overview

1x NO contact, 24 VDC, 0.5 A	System status relay contact	250 – 1100 nm	Spectral sensitivity
0/4 … 20 mA, max. load 750 ohm	Flame intensity analogue output	24 VDC ±20%	Operating voltage
RS485, Modbus RTU	Interface protocol	5 W	Power consumption
IP66 II 2G Ex db IIC T6 Gb II 2D Ex tb IIIC T85℃ Db	Protection class	-40°C to +85°C	Ambient temperature
6°	Optical viewing angle	Safety Self-monitoring and fail-safe	Safety
∅145 mm, length 285 mm	Dimensions	1, 2, 3, 5 s	Safety time (FFRT)
approx. 4.3 kg	Weight	1x NO contact, 24 VDC, 0.5 A	Flame relay contact

Key Features

For ambient temperatures from -40°c up to +85°c;
Two parallel channels to increase the safety of the device;
Flame flicker frequency measurement;
Usable for all burners with different fuels;
Explosion-proof.

Applications

Power stations;
Petrochemical industry;
Steel industry;
Cement factory;
Refineries;
Steam generators;
Waste incinerators;
Heating systems.

User Software Specifications

Application software Specifications and capabilities

Connection to 64 flame detectors, with only two strands of wires, by using RS485 connector and Modbus RTU protocol;
Display of switches regulation status of intensity and frequency thresholds, and the signal gain coefficient;
Display of wave shape, light intensity, and frequency of measured fluctuations from the stored flame light for required analyses;
The possibility of storing and implementing information in Excel format;
Installation capability on Windows operation system.