Det-Tronics X3302 Multispectrum IR Flame Detector User Manual

Page 5

95-8576

9.2

Magnetic

/ Manual

The detector also incorporates both Magnetic

(Mag

) and Manual

(Man

) features that

provide the same calibrated test as the Automatic

oi, and in addition actuates the Alarm output to verify

operation for preventive maintenance requirements.

These features can be performed at any time and

eliminate the need for testing with a non-calibrated

external test lamp.

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 X3302 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 X3302 Flame Detector:
Very High, High, Medium, and 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:

Aerospace, Hydrogen Storage

High:

Fertilizer (indoor), Refrigerants,

Compressors, Battery Manufacturing

Medium:

General Duty, Fertilizer (outdoor),

Ammonia,

Refrigerants

Low:

Hydrogen Fueling Stations, Turbine

Enlcosures

Additional information on X3302 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.