Duct Refrigerant Sensor (DFGS-REF)

The New Flamefast Duct Refrigerant Sensor allows for accurate monitoring of a wide range of refrigerant gases from a single unit. Using highly stable infra-red technology and full temperature compensation on all gases, it can be used for detection, rather than just for alarm conditions like semi-conductor sensors.ccurate monitoring of a wide range of refrigerant sensors from a single unit. 

Top Key Features

  • 24V AC/DC Power Supply
  • Universal Refrigerant sensor
  • Pre-calibrated for all gases
  • Fully temperature compensated
  • Traffic Light LCD readout
  • UK Manufactured

Overview

The New Flamefast Duct Refrigerant Sensor allows for accurate monitoring of a wide range of refrigerant gases from a single unit. Using highly stable infra-red technology and full temperature compensation on all gases, it can be used for detection, rather than just for alarm conditions like semi-conductor sensors.ccurate monitoring of a wide range of refrigerant sensors from a single unit.

To calibrate, only 1,000ppm R1234ze is required, then simply select your target gas from the calibration menu.

The full list of gases monitored is:

- R404a- R407f- R227
- R134a - R1234yf- R22
- R125 - R449a- R513a
- R407a - R507- R422d
- R417a - R123 - R1233zd
- R448a - R410a - R407c
- R32 - R452b - R1234ze


With a BACnet MS/TP interface, a 0-10V and relay output, the refrigerant sensor in one of the most versatile units available, all housed in a robust duct enclosure for monitoring supply or return air systems.

Key Features

  • 24V AC/DC Power Supply
  • Universal Refrigerant sensor
  • Pre-calibrated for all gases
  • Fully temperature compensated
  • Traffic Light LCD readout
  • BACnet MS/TP over RS485
  • Latching function with Reset input
  • Volt Free Contact output
  • Analogue output
  • Calibration and ‘End of Life’ reminders
  • Mounts onto any standard single gang junction box or conduit box
  • 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) Analogue
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
Refrigerant Gas TypeSee Manual
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Quality and Reliability as Standard

Part Numbers & Options / Accessories

Part NoDescriptionRangeLife (years)
DFGS-REFDuct Universal Refrigerant Sensor2,000ppm5

Data Sheets

General specifications in .pdf format

Operation Manuals

Installation and Operation instruction in .pdf format

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