Various sensor products
NAP|55A
NAP-55A is a miniature & low power consumption type of NAP-2A, and is mainly used for gas detectors and leak testers. 55A is a half in height and needs a half in power consumption compared to 2A so that thinner and lighter-weight detectors can be produced. The following are the basic characteristics but it is recommended to refer to the individual userfs manual for further information. A measuring circuit for sensor evaluation is the same as NAP-2A.
Target gases and concentration
| Gases |
Detection range |
| Methane |
CH4 |
0.05|5(0.05|2) |
| Propane |
C3H8 |
0.03|2.2(0.03|1) |
| Iso-butane |
Iso-C4H10 |
0.03|1.8(0.03|0.8) |
| Hydrogen |
H2 |
0.05|4(0.05|1.5) |
| Ethanol |
C2H5OH |
0.05|3.2(0.05|1.5) |
| Hydrocarbons |
CnH2n+2 |
1-100%LEL(1-50%LEL) |
( ) is a detection range in high accuracy
Ratings
| Items |
Specifications |
| Supply Voltage |
DC 2.5 +/- 0.25V
AC 2.5+/- 0.25V (r.m.s. 50~60Hz) |
Current
(When 2.5V is applied) |
DC 150 ~ 170mA
AC 150 ~ 170mA (r.m.s. 50~60Hz) |
| AmbientTemperature |
In operation -10 ~ +50
In storage -10 -~+50 |
| Ambient humidity |
In operation 95RH or less
In storage 99RH or less
(No dew condensation) |
Gas sensitivity characteristics
| Gases & concentration |
Output voltage |
| Output in clean air |
-35 ~ +35mV |
| Methane 3000ppm |
10 ~ 16mV |
| Iso-butane 1400ppm |
10 ~ 15mV |
| Hydrogen 1400ppm |
7 ~ 12mV |
| Ethanol 1400ppm |
Less than 11mV |
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| Gas sensitivity characteristics |
Response characteristics |
