NE4-HCHO-S

Formaldehyde (CH2O) Sensor

General Description:

The NE4-HCHO-S is an electrochemical gas sensor with 3 electrodes for the detection of Formaldehyde (C2HO) in the range 0-10 ppm, resolving down to a lowest detectable limit of 0.02 ppm (working together with high quality electronics and software), 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.

Specifications:

Features:

Detectable Gas:

Detection range:

Maximum overload:

Output current:

Zero Offset (20°C)

Reproducibility:

Output drift in air:

Response time (90%):

Temp. depend. in air:

Expected lifetime:

Formaldehyde (CH2O)

0 – 10 ppm

50 ppm

500 +/- 150 nA/ppm

<0.05ppm equivalent

+/- 2%

less than 20% / year

< 30 seconds

<0.25ppm (-20-+50°C)

>2 years

Operating Conditions:

Operating temperature:

Humidity range:

Pressure:

Recommended resistor:

Bias voltage:

-20 +50 degrees C

15 – 90% RH

0.9 – 1.1 atm

10 ohms

Not required

 

  •        3-Electrode design for greater stability
  •        Compact, leak-proof enclosure
  •        Resistant to shocks and vibration
  •        Linear output
  •        Highly specific to target gas
  •        Unaffected by humidity
  •        Low Power consumption
  •        Very Low Long term drift