General Description

The NT-NH3 Cell is a new electrochemical gas sensor with 3 electrodes for the detection of Ammonia (NH3) in a variety of gas detection applications. Exhibiting high performance with long-term stability, The compact (20.4mm dia) NT-NH3 sensor is designed to monitor toxic levels of ammonia is a wide variety of industrial safety applications. The sensor is mechanically and electrically compatible with a wide variety of commercially available gas detection instruments

NT-NH3 Specifications

Detectable gas:

Ammonia, NH₃

Detection range:

0-100ppm

Maximum overload:

200ppm

Output current:

40 +/- 12nA/ppm

Reproducibility: 

+/- 10%

Output drift in air:

<2% Month

Response time (90%):

<90 secs

Temperature Drift (zero):

<15ppm (-20 to +50 deg C)

Expected lifetime:

2 years

Operating conditions

Operating temperature:

-40 to +40 deg C

Humidity range(constant)

15-90% RH

Intermittent

0-99% RH

Pressure:

0.9 - 1.1 atm

Recommended resistor:

10 Ohms

Bias voltage:

NONE

Datasheet (PDF)

Unlike other designs, Nemoto's porous electrode technology enables accurate and reliable ammonia detection with high sensitivity, without the need for biased operation. The mechanical design of the sensor gives optimum gas diffusion characteristics, and the hermetically sealed enclosure prevents costly electrolyte leakage.