Spectrex 40/40L-LB UV/IR Flame Detector Series - Manual (Page 16)

SharpEye TM UV/IR Flame Detector User Guide
4 Features and Benefits
1.3 Features and Benefits
 UV/IR Dual Sensor
 High Speed Response: 150msec. response to saturated signal
 Built In Test (BIT): Manual and Automatic (see Built-In-Test (BIT) on
page 16).
 Heated Window: Prevents effects of icing, snow, condensation.
 Electrical Interface:
 Dry contact relays
 Communication network RS-485
 0-20mA output
 HART Protocol: Communication protocol (see HART Protocol on page 6).
 Exde: Integral junction box for easy wiring.
 SIL-2: TÜV approved (models 40/40LB and L4B only).
 Hazardous Area Certification: ATEX, IECEx, FM, CSA.
 Functionality Approval:
 EN54-10 approved by VdS
 FM approved per FM3260
1.4 Principles of Operation
This section describes the 40/40L, LB, L4, L4B principles of operation and
includes:
 Detection Principles, page 4
 Heated Optics, page 5
 HART Protocol, page 6
 RS-485 Modbus, page 6
 Product Certification, page 6
1.4.1 Detection Principles
The Model 40/40L, LB, L4, L4B Flame Detector is an electronic device
designed to sense the occurrence of fire and flames and subsequently
activate an alarm or an extinguishing system directly or through a control
circuit.