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 > Product > Gas Detector > Audio-visual display Gas Detector
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| Audio-visual display Gas Detector
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DA-91 Series
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DA-91 series detects leakage of various toxic or combustible gases leaked from industrial areas for gas producers, gas users, gas reservoirs, gas by-producers, and so on, in order to prevent any accidents in advance.
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| [ Features ] |
 FND display with Back Light |
| FND offers real-time display of gas density and back light offers easy reading in dark area. |
| Isolation Circuit |
| Built in isolation circuit prevents electrical noise and realizes the most stable sensor output. |
| Multi Signal Output |
| DC 4-20mA, 2 step-relay contact, & RS-485(option) – provides best networking with all kinds of devices & equipments. |
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| [ Specification
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| Detection principle |
Electro-chemical, NDIR, Catalytic |
| Response time |
within 20 seconds, 90%/full scale |
| Accuracy |
≤2% /full scale |
| Programmable |
Calibration density & detection range |
| Self diagnose |
FND shows senor error(S-ERR), 2mA output |
| Input power |
AC 220V/60Hz |
| Output power |
4~20mA / full scale – max. 2.5km transmitting length |
| Alarm |
Low alarm – AL1 LED(RED) |
| High alarm – AL2 LED(RED) |
| Light bar – BZ LED(RED) |
| Alarm method |
Sight – Light bar |
| Hearing – Buzzer (90㏈/1m) |
| Operation temperature & humidity |
-20℃~50℃ & 5~95% RH (non-condensing) |
| Alarm release |
Manual and automatic release |
| Alarm output |
2 step (AL1/AL2) alarm relay contact, RS-485 (option) |
| Mounting type |
Wall mounting type |
| Detection range |
0 ~ 10,000 ppm |
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