DA-50 Series
DA-50 Series GasDNA Gas Detector Malaysia Supplier, Supply, Suppliers, Supplies | VG Instruments (SEA) Sdn Bhd
SMART Gas Detector/Transmitter(4~20mA) with built-in LCD

DA-50 detects various combustible & toxic 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.

DA-50 converts digital signal into the 4-20㎃ standard current signal for output signal which 
can be transmitted to various external devices such as PLC, DDC, RECODER, and so on. 
Using these functions, you can easily construct the gas monitoring system more extensive 
as well as more comprehensive.

DA-50 provides RS-485 communication signal and gas leakage alarm signal by relay contact output. 
Besides, DA-50 has DC 4-20mA standard output which realizes max 2,500m long distance output signal transmission from sensor to receiver and RS-485 communication signal which realizes max 1000m long distance signal transmission. 

 
[ Features ]
 LCD display with Back Light
 Multi Signal Output
DC 4-20mA, 2 step-relay contact, & RS-485(option) – provides best networking with all kinds of devices & equipments.
 4-20mA Transmitter
4-20mA output enables stable and long distance (maximum 2.5km) signal transmission.
 RS-485
RS-485 enables stables stable and long distance (maximum 1.2km) signal communication.
 Alarm output
SPST 2 step relay contacts (AL1/AL2).
 
[ Specification ]
 
 
Detection principle Catalytic, electro-chemical, NDIR, or PID
Gas sampling Diffusion
Target gas Refer to the list
Density indication LCD display - PPM, %LEL, or %
Response time

within 20 seconds, 90%/full scale

Accuracy ≤2% /full scale
Sensor calibration Calibration with switch
Sensor parallax Zero – ≤ ±1% / 6 months, Span -≤ ±1% / 6 months
User programmable Calibration density, detection range
Input power DC 20 ~ 30V
Output power 4 ~ 20mA / full scale – maximum 2.5km long signal transmission
Communication RS-485 – maximum 1.2km long signal transmission 
with GasDNA’s own protocol
Operating temperature and humidity -20~50, 5~95% RH (non-condensing)
Signal wire CVVS & CVVSB 1.25sq x 3 wires - shield type
Alarm release Manual or Automatic
Mounting Wall or pipe mounting
Housing Polycarbonate
Alarm output 2 step- relay contacts (AL1/AL2)

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