Sierra Monitor Corporation 3600I, Инструкция по эксплуатации

Страница: 12 / 65

3600I
Page: 4
1.3 FEATURES AND BENEFITS
•
Detection Range: Up to 215 ft. (65m) for a 1 ft
2
(0.1m
2
) n-heptane fire.
•
Ultra High Immunity to False Alarms: See Table 4 on page 10.
•
Advanced Digital Processing of the Dynamic Characteristics of Fire: Flickering,
threshold correlation and ratio.
•
Multi IR Channels: Between 3-5 microns
•
Field Programmable Sensitivity: Four ranges to avoid zone crossover.
•
Built In Test (BIT): Manual and Automatic (see
Built-In-Test (BIT)
on page 15).
•
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 5).
•
EExde: Integral junction box for easy wiring.
•
SIL-2: TÜV approved.
•
Hazardous Area Certification: ATEX, IECEx, FM.
1.4 PRINCIPLES OF OPERATION
This section describes the 3600I principles of operation and includes:
•
Hydrocarbon Fire Detection, page 4
•
Heated Optics, page 5
•
HART Protocol, page 5
•
RS-485 Modbus, page 5
•
Product Certification, page 6
1.4.1 HYDROCARBON FIRE DETECTION
The Model 3600I detector is designed to detect flames in which carbon dioxide (CO
2
) is
produced in the combustion process. These include all hydrocarbon flames, as well as
other types of flames and burning materials such as wood or alcohol.
The detector’s principle of operation is based on patented IR3 technology. This
technology identifies the unique spectral signature that hot CO
2
has in the infrared (IR),
namely a peak of the intensity at wavelengths 4.2 to 4.7µ.