Instructions, AutroFlame X33AF, 116-P-X33AF/IGB, rev . E, 2013-08-13, P/N 95-8625-17 .1, Rev: 2/13
Autronica Fire and Security AS
Page 3
CAUTION
These tests require disabling of all extinguishing
devices to avoid release resulting from a
successful test.
The Mag
oi
test is performed by placing a magnet by
the marked location (Mag
oi
) on the outside of the
detector (see Figure 2) . The Man
oi
test is accomplished
by connecting the
oi
lead (terminal 22) to power supply
minus via an external switch . The magnet or switch must be
held in place for a minimum of 6 seconds to complete the
test . Either of these test methods activates the calibrated
IR emitters . If the resulting signal meets the test criteria,
indicating that greater than half of the detection range
remains, the Alarm output changes state, the indicating
LED changes to red, and the 0-20 mA current output
goes to 20 mA . This condition remains until the magnet is
removed or the switch is released, regardless of whether
the relays are set for latching or non-latching operation .
If less than half of the detection range remains, no alarm
is produced and a fault is generated . The fault indication
can be reset by momentarily applying the Mag or Man
oi
switch .
NOTE
Refer to Appendix A for FM verification of the
Optical Integrity
oi
function.
COMMUNICATION
The X33AF is furnished with an RS-485 interface for
communicating status and other information with external
devices . The RS-485 supports MODBUS protocol, with
the detector configured as a slave device .
For HART communication, connect a HART communicator
across a 250 ohm resistor in the 0-20 mA loop .
DATA LOGGING
Data logging capability is also provided . Status conditions
such as normal, power down, general and
oi
faults, pre-
alarm, fire alarm, time and temperature are recorded .
Each event is time and date stamped, along with the
temperature and input voltage . Event data is stored in
non-volatile memory when the event becomes active, and
again when the status changes . Data is accessible using
the RS-485 port .
INTEGRAL WIRING COMPARTMENT
All external wiring to the device is connected within the
integral junction box . The screw terminals accept wiring
from 14 to 24 AWG . The detector is furnished with four
conduit entries, with either 3/4 inch NPT or M25 threads .
DETECTOR SENSITIVITY LEVELS
There are four factory configured sensitivity levels
available for the X33AF Flame Detector:
Very High, Medium, Low and T-Low .
The following criteria should be considered when
choosing a sensitivity level for the intended application:
•
Detector placement
•
Speed of response based on fuel type and fire size
(see Appendix A for response times)
•
Distance between the hazard and the flame
detector
Recommended sensitivity guidelines are as follows:
Very High:
Offshore, Warehousing
Medium:
General Duty, Compressors
Low:
Offshore, close proximity/high IR
backgrounds
T-Low:
Turbine enclosures
Additional information on X33AF Flame Detector
performance results and sensitivities can be found in
Appendix A, the FM Approval and Performance Report .
Consult the factory with any questions on how to choose
the optimum sensitivity level for the intended application .
