Duct Flamefast Gas Sensor (DFGS)

The Flamefast Duct Mounted Gas Sensor provides is one of the most versatile gas sensors available on the market.

With an Analogue and Relay output, as well as a BACnet MS/TP interface, the DFGS can connect directly into most third-party controllers, all housed in a robust duct enclosure for monitoring supply or return air systems.

Top Key Features

  • 24 AC/DC Power Supply
  • Pre-calibrated
  • Traffic light LCD readout
  • Volt free contact output
  • UK Manufactured

Overview

The Flamefast Duct Mounted Gas Sensor provides is one of the most versatile gas sensors available on the market.

With an Analogue and Relay output, as well as a BACnet MS/TP interface, the DFGS can connect directly into most third-party controllers, all housed in a robust duct enclosure for monitoring supply or return air systems.

In a large proportion of modern buildings, the plant room safety systems are BMS integrated, and the FGS has been designed with this in mind. It can be treated like any other field sensor, the latching facility allows direct integration with the primary safety circuit, then simply pulse the Digital Input, or reset over the BACnet network once the alarm has cleared. This negates the requirement for a controller, cutting down cost of the equipment and installation.

Key Features

  • 24 AC/DC Power Supply
  • Pre-calibrated
  • Traffic light LCD readout
  • Volt free contact output
  • BACnet MS/TP over RS485
  • Latching function with Reset input
  • Analogue output
  • Simple configuration and calibration
  • Calibration and ‘End of Life’ reminders
  • Oxygen Sensors monitor Enrichment and Depletion as standard
  • 180mm Duct Probe (other lengths on request)
  • UK MANUFACTURED

Dimensions

Height:158 mm
Width:112 mm
Depth:58 mm
Probe Length:180 mm

Technical Specifications

Power Supply:24V AC/DC ± 10%
Power Consumption:100mA
BACnet:MS/TP over RS485
Baud: 9k6, 19k2, 38k4 or 76k8
127 Address (1/10th Load)
Full specification available on request
Analogue Outputs:0/2-10V Full scale linear
VFC Output:SPDT - 1A @ 24V Max
Audible:60dB @30cm
Operation Conditions:
Temp 5 ~ 40°C
Humidity 0 ~ 95% (NC)
Sampling Method:Diffusion
Warm-up Time:60 Seconds (24 Hours for full stability)
Response Time (T90):< 60 Seconds (Adjustable)
IP Rating:IP66 (external to duct)
Housing Material:PC/ABS
Colour:Grey/Black/Clear
Approval:CE, UKCA

Installer Selectable Options

LCD backlightEnable/Disable
Failsafe optionEnergise/De-energise Relay
 0-10V or 2-10V
Alarm LatchingEnable/Disable
Audible AlarmEnable/Disable
Auto Zero CalibrationEnable/Disable
Set-pointsAlarm1 / Alarm 2 / Relay
RangeAnalogue Output
DisplayGas Concentration / Formula
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Quality and Reliability as Standard

Part Numbers & Options / Accessories

Part NoGasRangeTypical Life (years)
DFGS-NGNatural Gas 100% LEL5
DFGS-LPGPropane100% LEL5
DFGS-H2Hydrogen (LEL)100% LEL5
DFGS-SF6Sulfur Hexafluoride1,000ppm5
DFGS-CO2Carbon Dioxide5%5
DFGS-COCarbon Monoxide 200ppm5
DFGS-NO2Nitrogen Dioxide5ppm3
DFGS-NH3Ammonia100ppm3
DFGS-CL2Chlorine5ppm3
DFGS-H2eHydrogen (Electrochemical)1,000ppm3
DFGS-SO2Sulphur Dioxide5ppm3
DFGS-O2Oxygen25%5

OTHER GASES AVAILABLE ON REQUEST

Data Sheets

General specifications in .pdf format

Operation Manuals

Installation and Operation instruction in .pdf format

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