DAX 3 F-C

The DAX 3F-C detector was designed to continuously measure the presence of various explosive gases such as methane, propane and butane in the air. Its measurement principle, catalytic combustion, gives it its major benefits: - very short response time, - accuracy and reliability of measurements. By connecting it to a Model E or F Dalemans unit, you will have an installation that provides the best value for money. ATEX certified, this detector is perfectly suited to boiler room applications.

Benefits and advantages of the DAX 3 F-C

  • Continuous explosive gas detection: Monitors the presence of combustible gases such as methane, propane and butane using catalytic sensor technology.
  • Fast and reliable response: Offers a response time of less than 30 seconds and a measurement range of 0–100% of the Lower Explosive Limit (LEL).
  • ATEX protection for safety-critical installations: Certified for use in the specified hazardous areas, including Zones 1 and 2 for gases.
  • Integration with Dalemans control panels: Designed to connect to E or F series gas control panels via a 3 mV Wheatstone bridge signal.
  • Compact and robust design: Features an AISI 316L stainless steel sensor head, a glass-fibre reinforced polyester enclosure and an IP6X protection rating.
 
MODEL DAX 3F-C
SENSING HEAD Stainless steel 1,4404 (AISI 316L)
SINTERED METAL FILTER
JUNCTION BOX Glass-fibre reinforced Polyester
DIMENSIONS 139 x 80 x 55 mm
WEIGHT 640 g
SENSOR TYPE Catalytic (Pellistor)
OUTPUT SIGNAL 3-wire mV (Wheatstone bridge)
MEASURING RANGE 0 - 100 % LEL
RESOLUTION ± 3 % of measuring range < 60 % LEL ± 5 % of measuring range < 100 % LEL
RESPONSE TIME (T90) < 30 sec.
EXPECTED OPERATING LIFE SPAN > 2 years
SENSOR CHARACTERISTICS* DAL 50 DAL-AC (acetylene)
SUPPLY VOLTAGE 2,50 V ± 0,25 V 2,00 V ± 0,10 V
SUPPLY CURRENT 170 mA ± 10 mA 145 - 160 mA
POWER CONSUMPTION 0,5 W 0,4 W
 
STORAGE TEMPERATURE -10 ºC to +50 ºC
OPERATING CONDITIONS
TEMPERATURE RANGE -10 ºC to +50 ºC
AMBIENT HUMIDITY 20 - 90 % HR
INTERMITTENT HUMIDITY 10 - 99 % HR
PRESSURE 90 - 110 kPa
CABLE CROSS SECTIONAL AREA 1,5 - 2,5 mm2 (solid wires)
MAX. CABLE LENGTH Refer to the installation instructions of the control unit
INGRESS PROTECTION IP6X (dust tight)
CABLE ENTRIES 1 x M20 (cable diameter 6 - 12 mm)
HAZARDOUS AREAS Zones 1 or 2 (gas) - Zones 21 or 22 (dust)
EQUIPMENT GAS GROUPING IIC (methane, propane, ethylene, hydrogen, acetylene)
STANDARDS EN 60079-0:2006, EN 60079-1:2007, EN 60079-7:2007 EN 61241-0:2006, EN 61241-1:2004
APPROVAL II 2G Ex d e IIC T6 II 2D Ex tD A21 IP6X T85 ºC
AMBIENT TEMPERATURE Tamb = -10 ºC to +50 ºC
 

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