Audio-visual display Gas Detector
Audio-visual display Gas Detector GasDNA Gas Detector Malaysia Supplier, Supply, Suppliers, Supplies | VG Instruments (SEA) Sdn Bhd
DA-91 Series

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. 

 
[ 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.
 
[ Specification ]
 
 
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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