雪兰莪,吉隆玻,甲洞VG Instruments (SEA) Sdn Bhd的商品-DA-50 Series

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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雪兰莪,吉隆玻,甲洞 - DA-50 Series

DA-50 Series