Spectrex 40/40L-LB UV/IR Flame Detector Series - Manual (Page 18)

SharpEye TM UV/IR Flame Detector User Guide
6 Principles of Operation
 Automatic, per temperature change (default): you can define the start
temperature below which the window is heated. (The default is 41°F
(5°C).) This temperature can be defined between 32°F (0°C) to 122°F
(50°C). The heating stops when the temperature is 27°F (15°C) above
the start temperature.
For more information, see Configuring your Detector on page 29.
1.4.3 HART Protocol
The 40/40 Flame Detectors use the HART protocol.
HART Communication is a bi-directional industrial field communication
protocol used to communicate between intelligent field instruments and host
systems. HART is the global standard for smart process instrumentation and
the majority of smart field devices installed in plants worldwide are HART-
enabled. HART is available in wiring options 2 and 3, see Table 1, page 3.
HART technology is easy to use and very reliable.
Through the HART connection, you are able to perform:
 Detector set-up
 Detector troubleshooting
 Detector health and status
For more details, refer to the HART Manual TM 777030.
1.4.4 RS-485 Modbus
For more advanced communications, the 40/40L, LB, L4, L4B detector has
an RS 485 Modbus-compatible output that provides data communication
from a network (up to 247 detectors) to a host computer or universal
controller for central monitoring. This feature allows for reduced installation
costs, easy maintenance and local or remote diagnostic tools.
1.4.5 Product Certification
The 40/40L, LB, L4, L4B Flame Detectors have the following certifications:
 ATEX, IECEx, page 6
 FM, CSA, page 7
 SIL-2 Approved (TÜV) (Models 40/40LB and L4B only), page 7
 EN54-10, page 7
1.4.5.1 ATEX, IECEx
The 40/40L, LB, L4, L4B Flame Detector is certified to:
 ATEX Ex II 2 GD per SIRA 07ATEX1250 and IECEx SIR. 07.0085.
 Ex de IIC T5 Ta -55°C to +75°C
Ex tD A21 IP66/X7 T95°C