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.
| 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 |
|
