雪兰莪,吉隆玻,甲洞VG Instruments (SEA) Sdn Bhd的商品-DA-750 Series

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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雪兰莪,吉隆玻,甲洞 - DA-750 Series

DA-750 Series