Compact CO2 monitor with alarm for many applications in air quality monitoring, green houses, energy management and for research and education.
The CO2 is measured with a high-class non-dispersive infrared (NDIR) sensor via opening at instruments head.Simultaneous display of time weighted average exposure over 8 hours (TWA) or 15 minutes (STEL).CO2 – Dangerous at concentration > 3%
The ECO420 is an ideal measuring warning instrument for moderate but non-dangerous levels – it is no replacement for personal safety equipment to be used in areas with potentially dangerous atmosphere.

ATTENTION:
Never enter potentially dangerous areas where CO2 may exceed 3% or 30000 ppm CO2 without additional personal safety equipment!

Display
Thanks to the backlight, the three-line LCD display offers ergonomic wide-angle visibility – by day and by night.
The HOLD function enables the display values to be frozen.

Power supply
2 powerful AA NiMH rechargeable batteries, the energy-saving design and the configurable automatic switch-off function ensure long operation.
Configurable LCD backlight for further energy-saving options.

Protection class:
IP30
Measurement rate:
2 meas/s
Power supply:
2 x AA rechargeable NiMH batteries
(scope of delivery),
consumption approx. 50 mA,
operating time > 24 hours for NiMH batteries (without backlight).
Recharging time ~ 8 hours
Power consumption:
ca. 50 mA
Weight:
approx 160 g
Housing material:
Break-proof ABS-housing
Measuring range:
ECO 420-02: 0..2000 ppm precision (maximum up to 10000 ppm /1,000%)
ECO420-20: 0..19999 ppm; 0.000..2.000 % (expanded to 3.200 %)
Operating conditions:
0 to 50 °C; 0 to 85 % r.h. (non-condensing)
Storage temperature:
-20 … +70 °C (without batteries)
Display:
3-line with battery status indicator, Backlight, protected by shatterproof screen, overhead display at the push of a button
Dimensions:
108 x 54 x 28 mm
Sensor life:
> 15 years
Additional functions:
Min/max/hold, TWA or STEL-calculation
(average over 24 hours or 15 mins),
2-level alarm (optical and acoustical)
Charging port:
Micro USB socket, incl. connection cable to USB 2.0 type A, for use with common USB chargers
Accuracy (nominal temperature):
±70 ppm CO2 ±3% of reading)
Automatic Power-Off:
Yes, configurable by the user
Battery life:
> 24 hours for NiMH batteries (without backlight)
Housing:
break-proof ABS, polyester (front panel), Metal clip and carrying strap
Measuring cycle:
2 seconds
Pressure dependence:
+ 1.6 % of value per kPa from normal pressure