Product Overview
2.4.2
Heated Optics
The SharpEye 40/40 Flame Detector uses heated optics. The heater increases the
temperature of the optical surface by 5
–
8°F / ~3
–
5°C above the ambient
temperature to improve performance in ice, condensation, and snow conditions.
The heated optics can be set to one of the following:
•
Not operated.
•
On continuously.
•
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 from 32°F/0°C to 86°F/30°C. The heating
stops when the temperature is 27°F/15°C above the start temperature.
on page 43.
2.4.3
HART Protocol
The SharpEye 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 1, 2, and 3 (see Table 1).
HART technology is easy to use and very reliable.
Through the HART connection, you are able to perform:
•
Detector setup
•
Detector troubleshooting
•
Detector health and status
For more details, refer to the
HART Manual TM777030
.
2.4.4
RS-485 Modbus
For more advanced communications, the 40/40R 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.
