Introduction; Key Features - GasTech F-GUARD UVIR User Manual

1. Introduction

The F-Guard-UV-IR flame detector provides an ultra-fast response, high performance and reliable detection
of a large variety of fires including hydrocarbon fires (visible and non-visible), as well as hydrogen fires (F-
Guard-UV-IR only).
The detector is certified for use in hazardous area locations; it may also be used in other areas not classified
as hazardous. The two cable/conduit entries on either side of the lower part of the detector housing are for
connecting power and outputs to associated signalling equipment.
The detector addresses slow-growing fires as well as fast eruptions of fire using improved UV-IR technology.
The detector operates in all weather and light conditions. It will automatically record a fire event (1 min
pre/post alarm) using the internal data logger.
During normal operation, the flame detector performs self-tests of its optics, electronics and software. These
include a periodic BIT (Built-In-Test) in which the sensors and window cleanliness are tested.
This manual covers two UV/IR detector models:
F-Guard-UV-IR: Hydrogen and hydrocarbons flame detection. UV radiation 0.18-0.26 micron range.

Spectrum response of IR radiation in the 2.5 - 3.5 micron range.
F-Guard-UV-IR-F: Hydrocarbon flame detection. Spectrum response of IR radiation in the 4.0-5.0 micron

range.
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Key Features

• High immunity: To false alarm
Ultra-fast detection mode: Within 5 milliseconds for Hydrogen fireballs or explosions
•
Extreme sensitivity: Up to 100 ft. (30m) for a 1ft2 (0.1m2) n-heptane pan fire
•
Built-in-Test (BIT) - Automatic and manual self-test of window cleanliness and the overall operation
•
of the detector.
Improved speed of response option - (0.5s) for automotive applications in compliance with NFPA 33
•
Window heater
•
Tilt mounting bracket - for accurate detector positioning.
•
UV and IR warning levels - 0-20mA - current output warning when elevated UV or IR radiation is
•
detected.
For more information & Technical support:
F-Guard UV-IR User Manual
to avoid condensation and icing.
-
info@gastech.com and support@fg-detection.com
Doc. No. F110V0020.06
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