NAP-56A

General Purpose Low-Cost Flammable Catalytic Gas Sensor

General Description:

The Nemoto NAP-56A is a new, improved low cost catalytic flammable gas sensor.

Closely related to the very popular NAP-55A sensor, the NAP-56A uses exactly the same sensing elements, but the enclosure in which they are mounted employs a nickel plated brass mounting cap and a phenolic resin header, instead of the Nylon 66 material used in the NAP-55A. As a result, the sensor exhibits an increased sensitivity output and an increase in useful temperature range, whilst being very slightly larger in dimensions, compared to the NAP-55A.

The widened temperature range of the NAP-56A makes it particularly suitable for applications such as recreational vehicles, caravans and marine applications where a wide temperature range is required. The mechanical construction and technical performance of this sensor makes it also suitable for a wide variety of Industrial and commercial gas detection applications.

Specifications:

Features:

Detectable Gas:

Detection range:

Voltage supply:

Current drawn:

Signal Sensitivity:

Zero Offset (20oC):

Response time (90%):

Accuracy:

Expected lifetime:

Long Term Span Drift:

Long Term Zero Drift:

All Flammable Gases

0 – 60% LEL

2.5V +/- 0.2V

170mA +/- 10 mA

15-23mV / 0.3% CH4

0mV +/-  35mV

< 10seconds

+/- 1% LEL

> 3 years

<+/- 2% FSD/ month

<+/- 2mV / year

Operating Conditions:

Operating temperature:

Humidity range:

Pressure:

Temperature Drift (zero):

Linearity:

-30 +70 oC

0 – 95% RH

0.9 – 1.1 atm

<+/- 2% LEL

Linear to

60% LEL

 

  •        Measures flammability directly
  •        Highly resistant to Catalyst poisons
  •        Wide Ambient Temperature Range
  •        Effectively Linear output to 50%LEL
  •        Specific to flammable  gases
  •        Unaffected by Humidity
  •        Very Simple circuitry
  •        Very Low Long term drift