DAX 3 F-I

The DAX 3F-I detector was designed to continuously measure the presence of various explosive gases 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 Dalemans unit, you will obtain a very high performance installation. ATEX certified and with a stainless steel casing, this detector is especially suitable for applications in aggressive environments or environments where hygiene is essential.

Benefits and advantages of the DAX 3 F-I

  • Continuous explosive gas detection: Monitors combustible gases such as methane, propane, hydrogen and acetylene using catalytic sensor technology.
  • Fast and reliable response: Response time of less than 30 seconds and a measurement range of 0–100% of the Lower Explosive Limit (LEL).
  • ATEX and IECEx certification: Suitable for industrial installations with potentially explosive atmospheres, in accordance with the zones and conditions specified in its certifications.
  • Resistance to harsh environments: Features an AISI 316L stainless steel sensor head and junction box, particularly suitable for demanding environments or applications where hygiene is essential.
  • Integration with Dalemans control panels: Allows the detector to be connected to Dalemans gas control panels via a 3 mV Wheatstone bridge signal.
 
MODEL DAX 3F-I
SENSING HEAD Stainless steel 1,4404 (AISI 316L)
SINTERED METAL FILTER
JUNCTION BOX
CABLE GLAND Nickel plated brass or stainless steel
DIMENSION / WEIGHT 166 x 152,5 x 75 mm / 1.140 g
SENSOR TYPE / SIGNAL Catalytic (Pellistor) / 3-wire mV (bridge Wheatstone)
MEASURING RANGE 0 - 100 % LEL
RESOLUTION ± 3 % of measuring range < 60 % LEL ± 5 % of measuring range > 60 % LEL
RESPONSE TIME (T90) < 30 sec.
EXPECTED OPERATING LIFE > 2 years
SENSOR CHARACTERISTICS* DAL17 DAL 21 DAL-AC (acetylene)
SUPPLY VOLTAGE 2,00 V  2,00 V ± 0,10 V 2,00 V ± 0,10 V
SUPPLY CURRENT 175 mA ± 20 mA 300 mA 145 - 160 mA
POWER CONSUMPTION 0,4 W 0,75 W 0,4 W
STORAGE TEMPERATURE -40 ºC to +80 ºC
OPERATING TEMPERATURE -20 ºC to +55 ºC for T6 temperature class -20 ºC to +70 ºC for T5 and T4 temperature class
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 or M25 / 6 - 12 mm (other sizes available)
HAZARDOUS AREA 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-T4 II 2D Ex tD A21 IP6X Tx ºC
AMBIENT TEMPERATURE Tamb = -20 ºC to +55 ºC for T6 and T85 ºC Tamb = -20 ºC to +75 ºC for T5 and T100 ºC Tamb = -20 ºC to +90 ºC for T4 and T135 ºC
CERTIFICATE FTZU 10 ATEX 0034X
 

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