NE4-NH3 is an ammonia gas sensor for industrial application.2 more types(NH3-1000, NH3-5000) except standard are also available for higher concentration in the next page.
It is very stable in normal circumstance for more than 6 months, and can detect ammonia with excellent accuracy without reduction of sensitivity.
Additionally, since it is applicable in exceedingly low temperature, it is available for many applications.

By adhering to industry standards for size and connection orientation, the NE4-NH3 can be retrofitted easily to existing product designs.


NE4-NH3's Structure

Target gases and Concentration

Gases Detection Range
Ammonia NH3  0 - 100 ppm

Gas sensitivity characteristics

Gas Concentration & Output Current
 Ammonia NH3 40±12nA/ppm NH3
Gas sensitivity characteristics Recommended measuring circuit


Items Ratings
Repeatability Less than ±10%
Response time T90: Less than 90 sec.
Zero offset drift <15ppm (-30 - +50°C)
Ambient Temperature In operation -40 - +50°C
Ambient humidity In operation 15 - 90%RH