DAX 420

The DAX 420 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 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 is especially suitable for the industrial sector, whose applications are located in an explosive atmosphere.

MODEL DAX 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 / OUTPUT SIGNAL Catalytic (Pellistor) / 3-wire 4..20 mA current loop
ADJUSTMENTS Zero and calibration by internal potentiometers
MEASURING RANGE 0 - 100 % LEL
RESOLUTION

± 3% full scale < 60% LEL

± 3% full scale < 60% LEL
RESPONSE TIME (T90) < 30 sec.
EXPECTED OPERATING LIFE SPAN > 2 years
SUPPLY VOLTAGE 19 - 30 Vdc
SUPPLY CURRENT* Max. 90 mA
STORAGE TEMPERATURE -40ºC to +80ºC
TEMPERATURE RANGE -20ºC to +55ºC
AMBIENT HUMIDITY 20 - 90 % HR
INTERMITTENT HUMIDITY 10 - 99 % HR
PRESSURE 90 - 110 kPa
CABLE CROSS SECTIONAL AREA 0.75 - 2.5 mm2 (solid wires)
MAX. CABLE LENGTH 1.000 m
LOOP RESISTOR 50 - 750 ohms
INGRESS PROTECTION IP 6X (dust tight)
CABLE ENTRIES 1 x M20 / 6.1 - 11.7 mm (other size upon request)
HAZARDOUS AREAS Zones 1 or 2 (gas) - Zones 21 or 22 (dust)

 

Files

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