Net IR-S Infrared Flame Detector

The proven IR-S type infrared flame detector that has been successfully installed in many power plants is combined with the Mitsubishi Power's latest control system, DIASYS Netmation, to create a product called Net IR-S type infrared flame detector. This flame detector product functions as a burner control system and meets the needs of thermal power plants for modern monitoring and control systems.

The sensor unit of Net IR-S is the same as a conventional IR-S sensor, and can be used for any of the following fuels: fuel oil, coal, and gas. In addition, its superb detection reliability, maintainability, and cost performance are maintained.

Furthermore, the decision circuit is built as a module of DIASYS Netmation. It is used along with an upper layer of Netmation to offer an easy-to-use interface. The panel of Net IR-S can be designed so that the Net IR-S works as a stand-alone flame detector system independent from a burner control system.

If you replace a conventional flame detector with this new type, the preexistent equipment can be reused.

Equipment name	Existing methods of flame detection
Equipment name	UV Type	IR Type
Sensor unit	Replaced	Replaced
Flame detector panel	Replaced	Replaced
Sensor cable	Not replaced	Replaced
Guide pipe	Not replaced	Not replaced
Cooling-air piping	Not replaced	Not replaced
Cooling fan	Not replaced	Not replaced

High sensitivity design
The newly designed sensor circuit enables stable detection of the burner flame. The flame is detected through the unlit zone.
Extended detection range
The sensor has 100 times the dynamic range of a conventional product and allows stable detection from slow combustion to a high intensity flame. No sensitivity adjustment is required for the sensor at the site.
Maintenance free
A ball lens is used to eliminate the need to clean the sensor window.
Long-life sensor
Because a long-life infrared semiconductor sensor is used, periodic replacement is not necessary.
Decreasing the number of panels
The detector unit is compact with a space-saving design which allows one panel to incorporate 40 corners.
Reuse of existent boiler facilities
When you replace a flame detector, work is not necessary for the boiler itself.
Reuse of the cable
Changing the cable between the sensor and the panel is not necessary.

System Configuration

The following is an example of a fuel oil burner,

The specifications of a sensor unit are as follows.

Item		Specification
Type		Explosion-proof (Exd2 BT4), waterproof
Dimensions	Entire length	Any value
Dimensions	Guide pipe	50A (40A)
Detection wavelength		500～1100nm
Allowable temperature	Sensor tip	Not exceeding 400 deg C
	Inside of guide pipe	Not exceeding 200 deg C
	Amplifer	Not exceeding 60 deg C
Cooling air	Air pressure	[In-furnace pressure] + 150mmAq
Cooling air	Air flow	1.5Nm³/min per sensor

The specifications of a flame detector panel are as follows.

Item		Specification
Dimensions		2,300mm(H) x 810mm(W) x 800mm(D)
Structure		Flame detector unit, duplicated power supply system, terminal unit, duplicated media adapter
Output signals	Flame on	1a
	Low luminance level	1b
	Power loss	1c
	Contact capacity	125VAC/120VDC, 0.5A
Ambient temperature		0 to +50 deg C

Plant Control System

Overview

Features

System Configuration

Flame detector

Fuel oil burner

Specifications

Sensor unit

Flame detector panel

Related Products