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VG Instruments (SEA) Sdn Bhd
VG Instruments (SEA) Sdn Bhd 903421-U
Featured Merchant
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+60193123363
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26-Dec-2018

SMART Gas Detector/Transmitter(4~20mA) 
with built-in LCD – Suction Type

DA-750 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. Built-in micro pump suctions gas continuously which is effective gas sampling especially for closed area. DA-750 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 to construct the gas monitoring system more extensive as well as more comprehensive. DA-750 provides RS-485 communication signal and gas leakage alarm signal by relay contact output. Besides, DA-750 has DC 4-20mA standard output which realizes max 2500m long distance output signal transmission from sensor to receiver and RS-485 communication signal which realizes max 1000m long distance signal transmission. 

 
[ Features ]
 Auto-Suction Type
Built-in micro pump suctions gas continuously which is effective gas sampling especially for closed area.
 LCD Display with Back-Light
 Isolation Circuit
Built-in isolation circuit prevents electrical noise to secure stable sensor operation.
 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 Suction Type
Input power DC 20~24V
Sample gas volume 1.0 Liter/min ~ 2.5 Liter/min
Accuracy ≤2% /full scale
Output signal DC 4-20㎃ / full scale
Memory 4,000 records
Density indication LCD Display - PPM, %LEL, %, or PPb
Alarm AL1 Alarm – AL1 LED (RED)
AL2 Alarm – AL2 LED (RED)
Setting of alarm value AL1/AL2 2stages Alarm-User can optionally set.
Alarm delay time 0~99 seconds with user adjustable
Alarm clearing Manually or automatically
Alarm output 2 step alarm relay contact (AL1/AL2)
Operating temperature -10 ~ 50
Operating humidity 5 ~ 95%RH (Non-Condensing)
How to install Wall Mounting Type
Signal cable CVVS & CVVSB 1.25sp*3 Wire-Shield Type
Gas inhaling 6Ø Tube
Output option RS-485

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VG Instruments (SEA) Sdn Bhd (903421-U)
12A, Jalan Dagang SD2/1G, Bandar Sri Damansara, Kepong, 52200 Kuala Lumpur, Malaysia.

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Website: https://www.vginstruments.com.my
Website: https://vginstruments.newpages.com.my/
Website: http://vginstruments.n.my/
Website: http://vginstruments.newstore.my/

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