The DAT 420 detector was designer to continuously measure the presence of various toxic gases in the air such as carbon monoxide and ammonia but also oxygen.
Its electrochemical measurement principle gives it its major assets:
- measurement stability,
- selectivity of the gas to be detected and high accuracy.
By connecting it to a Dalemans unit or to any other instrument that can receive a 4.20 mA signal, you will benefit from a highly flexible installation.
ATEX certified, this detector will be particularly suitable for industrial applications located in
an explosive environment.
| MODEL |
DAT 420 |
| SENSING HEAD |
Stainless steel 1.4404 (AISI316L) |
| SINTERED METAL FILTER |
| JUNCTION BOX |
Aluminium |
| DIMENSIONS / WEIGHT |
193 x 145 x 90 mm / 1.500 g |
| SENSOR TYPE / SIGNAL |
Electrochemical sensor / 2-wire 4..20 mA
current loop |
| ADJUSTMENTS |
Zero and calibration by internal potentiometers |
MEASURING RANGE
(non-exhaustive list)* |
CO |
300, 500, 1.000 ppm |
| NO2 |
20, 50 ppm |
| Cl2 |
10, 50 ppm |
| H2S |
50 ppm |
| O2 |
25 % |
| NH3 |
100, 1.000, 5.000 ppm |
| SO2 |
20 ppm |
| RESOLUTION |
±1.5 % escala total |
|
| RESPONSE TIME (T90) |
< 45 sec. |
| EXPECTED OPERATING LIFE SPAN |
> 2 years |
| ELECTRICAL CHARACTERISTICS |
15 – 30 Vdc / Max. 30 mA |
| TEMPERATURE |
Storage: -40ºC a 80ºC / Use: -10ºC a + 40ºC |
| AMBIENT HUMIDITY |
20 – 90 % HR |
| INTERMITTENT HUMIDITY |
10 – 99 % HR |
| PRESSURE |
90 – 110 kPa |
| CABLE |
2 x 0.5 mm2 twisted and shielded pair (max. 1.000 m) |
| LOOP RESISTANCE |
50 – 750 ohms |
| INGRESS PROTECTION |
IP 6X (dust tight)
|
| CABLE ENTRY |
1 x M20 / 6.1 – 11.7 mm (other size upon request)
|
| HAZARDOUS AREAS |
Zone 1 or 2 (gas)
NH Zone 21 or 22 (dust)
|
| GAS GROUPING |
IIC (methane, propane, ethylene, hydrogen, acetylene) |
| CERTIFICATE |
FTZU 09 ATEX 0074 |
|
