Det-Tronics X5200 UVIR Flame Detector with Pulse Output User Manual

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7.1

4

Quick Fire (High Speed)
The Quick Fire (High Speed) feature can be used in

conjunction with the TDSA signal processing method.

This method overrides TDSA requirements in the event

of an intense signal. When Quick Fire is activated, the

detector is capable of responding to an intense fire signal

in less than 30 milliseconds (0.030 seconds). Using

the Quick Fire feature in conjunction with TDSA signal

processing allows the detector to provide a high speed

response to a large, non-flickering fire (such as in high

pressure gas applications) while maintaining an ability to

respond to smaller fires.

UV DETECTOR OpTIONS
The UV detector in the X5200 can be programmed for:

Arc Rejection

Standard

arc Rejection (Recommended Factory Setting)
The arc rejection mode enables the detector to prevent

nuisance fire alarms caused by UV from short-duration

electrical arcs or electrostatic discharge, while maintaining

the ability to reliably detect the UV given off by a flame.

Typical applications that benefit from arc rejection logic

include electrostatic coating processes and uncontrolled

environments where transient UV sources can be present,

such as many typical outdoor applications. Most false

alarm sources have short transient UV signatures, while

fire creates a long UV signature over many seconds.

Most fires are detected in a few seconds. Most fires

are detected in a few seconds (see response times in

Appendix A).

Standard Signal processing
Standard signal processing is recommended for

high-speed suppression systems only. To allow for

high-speed operation, the standard processing mode

does not incorporate the arc rejection programming.

This mode should only be used in a controlled, indoor

environment.

gENERal aPPlICaTION

INfORmaTION

RESpONSE CHaRaCTERISTICS
Response is dependent on the detector’s sensitivity

setting, arc rejection, and time delay settings. Other

factors include distance, type of fuel, temperature of the

fuel, and time required for the fire to come to equilibrium.

As with all fire tests, results must be interpreted according

to an individual application.

See Appendix A for third-party approved fire test results.

Additional fire test results are available from Det-Tronics.

welding
Electric arc welding is a source of intense ultraviolet

radiation. UV radiation from arc welding readily scatters

and can deflect across significant distances, even when

direct obstructions exist. Any open door or window can

allow nuisance UV radiation from arc welding to enter an

enclosed area.

It is recommended that the system be bypassed during

welding operations in situations where the possibility of a

false alarm cannot be tolerated. Gas welding mandates

system bypass, since the gas torch is an actual fire. Arc

welding rods can contain organic binder materials in

the flux that burn during the welding operation and are

detectable by the X5200. Welding rods with clay binders

do not burn and will not be detected by the X5200.

However, system bypass is always recommended, since

the material being welded may be contaminated with

organic substances (paint, oil, etc.) that will burn and

possibly trigger the X5200.

artificial Lighting
The X5200 should not be located within 3 feet of artificial

lights. Excess heating of the detector could occur due to

heat radiating from the lights.

EMI/RFI Interference
The X5200 is resistant to interference by EMI and RFI,

and is EMC Directive compliant and CE Marked. It will

not respond to a 5 watt walkie-talkie at distances greater

than 1 foot.

Non-Carbon Fires
The response of the X5200 is limited to carbonaceous

fuels. It should not be used to detect fires from fuels

that do not contain carbon, such as hydrogen, sulfur and

burning metals.

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