Low-Cost Electrochemical Toxic Gas Sensors for Residential and Light Commercial Applications

NE4-CO Electrochemical Carbon Monoxide Gas Sensor

General Description:

The NE4-CO is an electrochemical gas sensor with 3 electrodes for the detection of Carbon monoxide (CO) in a variety of industrial and commercial gas detection applications. Exhibiting high performance with long-term stability, this compact (20.4mm dia) sensor is suitable for portable Gas Detection Instruments or Fixed Gas Detection heads.  Nemoto's porous electrode technology enables accurate gas detection with high sensitivity. The mechanical design of the sensor gives optimum gas diffusion characteristics, and the hermetically sealed enclosure prevents costly electrolyte leakage.



Detectable gas:

Carbon Monoxide (CO)

Detection range:

0 – 1000 ppm

Maximum overload:

1500 ppm

Output current:

75 +/- 15 nA/ppm


+/- 2%

Zero offset in clean air:

<+/- 5ppm Equivalent

Output drift in air:

less than 5%/year

Response time (90%):

< 30 seconds

Temp. depend. in air:

<10ppm (-20 to+50°C)

Expected lifetime:


Operating conditions

Operating temperature:

 -20 +50 degrees C

Humidity range:

15 – 90% RH


0.9 – 1.1 atm

Recommended resistor:

10 ohms

Bias voltage:

Not required