DTX 420

The DTX 420 detector was designed 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.
This detector is especially suitable for applications like underground car parks, laboratories and cooling systems.

MODEL DTX 420
MATERIAL SENSING HEAD Brass (CuZn39Pb3) or stainless steel 1.4404 (AISI316L)
JUNCTION BOX Polystyrene
DIMENSIONS / WEIGHT 165 x 94 x 57 mm / 540 g
SENSOR TYPE Electrochemical
OUTPUT SIGNAL 4-20 mA current loop
ADJUSTMENTS Zero and calibration by potentiometers
TARGET GAS* Density (air=1) TLV Range
AMMONIA (NH3) 0.59 20.00 ppm 0 - 100 ppm
    0 - 1000 ppm
    0 - 5000 ppm
CARBON MONOXIDE (CO) 0.94 25.00 ppm 300 ppm
    0 - 500 ppm
    0 - 1000 ppm
NITROGEN DIOXIDE (NO2) 1.59 3.00 ppm 0 - 20 ppm
    0 - 50 ppm
CCURACY ±1.5 % full scale
RESPONSE TIME (T90) < 45 sec.
EXPECTED OPERATING LIFE SPAN > 2 years
ELECTRICAL
CHARACTERISTICS		 10 - 30 Vdc / 30 mA
TEMPERATURE -10 ºC to +40 ºC
AMBIENT HUMIDITY 20 - 90 % RH
INTERMITTENT HUMIDITY 10 - 99 % RH
PRESSURE 90 - 110 kPa
CABLE 2 x 0.5 mm2 twisted and shielded pair (max. 1.000 m)
WIRING 2 wires
LOOP RESISTANCE 50 to 750 ohms
INGRESS PROTECTION (BOX) IP 65
CABLE ENTRY 1 x M16

 

 

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