| Model |
FA-490 |
| Measuring Gas |
Combustible gas in the air |
Hydrogen in the air |
Methane in the air |
Organic solvent in the air |
| Detection Principle |
Catalytic combustion method (Note 1) |
Hot wire semiconductor method (Note 2) |
Hot wire semiconductor method (Note 2) |
Hot wire semiconductor method (Note 2) |
| Measuring Range |
0 - 100%LEL |
0 - 2,000ppm |
0 - 5,000ppm |
0 - 500ppm |
| Accuracy |
Within ±25% of the setting value |
Within ±25% of the setting value (within a range of 1000ppm from 200ppm) |
Within ±25% of the setting value (within a range of 1000ppm from 500ppm) |
Within ±25% of the setting value (within a range of 200ppm from 50ppm) |
| Display Method |
4-digit LED digital |
| Alarm Method |
Red LED lights intermittently and buzzer sounds intermittently |
| Alarm Setting |
Adjustable (2 step alarm) |
| Failure display |
Red LED lights intermittently and buzzer sounds intermittently |
| Power Source |
AC100V±10V, 50/60Hz (AC220V as extra option) |
| Alarm contact output |
Gas alarm : 1a or 1b contact, Faulty alarm : 1a or 1b contact, AC125V, 0.6A (Resistance load) |
| Analog output |
4 - 20mA |
| Detection Point |
1 point |
| Operating Temperature Range |
Temperature: -10 - 40℃ |
| Installation |
Wall mount type (Panel mount type is optional) |
| Dimensions |
120(W)×205(H)×69(D)mm |
| Weight |
0.9kg |
(Note 1) Conformity detector heads for catalytic combustion method : RDE-T, RD-4, RH-S
(Note 2) Conformity detector heads for hot wire semiconductor method : RDE-TS, RH-S
