13
DAX 3F-I
Specifications
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
Dimensions / Weight
166 x 152.5 x 75 mm / 1140 g
Sensor type / Signal
Catalytic (Pellistor) / 3-wire mV (Wheatstone bridge)
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 span
> 2 years
Sensor characteristics *
DAL17
DAL21
DAL-AC
(acetylene)
Supply voltage
2.00 V
+0.025
2.00 V ± 0.10 V
2.00 V ± 0.10 V
-0.075
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 °C to +80 °C
Operating temperature
-20 °C to +55 °C for T6 temperature class
-20 °C to +70 °C for T5 and T4 temperature class
Humidity
Ambient : 20 - 90 % HR / Intermittent : 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 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-T4
II 2D Ex tD A21 IP6X Tx °C
Ambient temperature
Tamb = -20 °C to +55 °C for T6 and T85 °C
Tamb = -20 °C to +75 °C for T5 and T100 °C
Tamb = -20 °C to +90 °C for T4 and T135 °C
Certificate
FTZU 10 ATEX 0034X
* Please refer to the marking label of the sensing head.
*
Ensure that the sensor electrical characteristics meet the capability of the associated control unit.
