Det-Tronics X3301 Multispectrum IR Flame Detector User Manual

Page 5

95-8527

19.2

CaUtIon

These tests require disabling of all extinguishing
devices to avoid release resulting from a
successful test.

The Mag

test is performed by placing a magnet

at the location marked "MAG OI" on the outside

of the detector (see Figure 2). The Man

test is

accomplished by connecting the

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

switch.

NOTE

Refer to Appendix A for FM verification of the

function.

COMMuNICATION
The X3301 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.

NOTE

The EQP model uses LON/SLC communication.
RS-485 and HART communication are not
available on the EQP model.

DATA LOggINg
Data logging capability is also provided. Status

conditions such as normal, power down, general and

faults, 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 Inspector Connector accessory, RS-485, or the

EQP Controller.

INTEgRAL WIRINg COMpARTMENT
All external wiring to the device is connected within the

integral junction box. 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 X3301 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 X3301 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.