Spectrex 40/40M Multi IR Flame Detector - Manual (Page 58)

Multi IR Hydrocarbon and Hydrogen Flame Detector User Guide
46 Approvals
communicate between intelligent field instruments
and the host system. HART is available in wiring
options 2 and 3.
Through the HART protocol the detector can:
 Display set-up
 Reconfigure the set-up
 Display detector status and definition
 Perform detector diagnostics
 Troubleshoot
For more details refer to HART Manual TM777030.
 Communication Network: The detector is equipped
with an RS-485 communication link that can be used
in installations with computerized controllers.
The communications protocol is Modbus compatible.
 This protocol is a standard and widely used.
 It enables continuous communication between a
standard Modbus controller (Master device) and a
serial Network of up to 247 detectors.
Heated
Optics The front window can be heated to improve performance
in icing, condensation and snow conditions. The heater
increases the temperature of the optical surface by 5-8°F
(3-5°C) above the ambient temperature. The heated
optics can be configured in three ways:
 Off: The optics are not heated
 On: The optics are heated continuously
 Auto: Operated only when the change of temperature
requires the heating. (default)
In Auto mode the start heating temperature can be
defined between 32°F - 122°F (0°C - 50°C). The detector
stops heating the window when the temperature is 27°F
(15°C) above the start temperature.
A.4 Approvals
Hazardous Area
Approvals  FM, CSA
Class I Div. 1 Groups B, C and D;
Class II/III Div. 1 Groups E, F and G.
 ATEX, IECEx
Ex II 2 G D
Ex de IIC T5 Ta -55°C to +75°C
Ex tD A21 IP66/X7 T95°C
or
Ex de IIC T4 Ta -55°C to +85°C
Ex tD A21 IP66/X7 T105°C
Functional
Approvals  EN54-10 approved by VdS
 FM approved per FM3260