DA-500 Series (explosion proof)

06-May-2019

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Kategori: GasDNA Gas Detector

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SMART Gas Detector/Transmitter(4~20mA) with built-in LCD & explosion proof

DA-500 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-500 converts digital signal into the 4-20mA standard current output signal which can be transmitted to various devices such as PLC, DDC, or recorder to build comprehensive gas monitoring system. Also, DA-500 provides RS-485 communication signal and alarm relay contact. DC 4-20mA standard output signal realizes max 2500m long distance output signal transmission and RS-485 communication signal realizes max 1000m long distance signal transmission.

[ Features ]

Auto-calibration without opening cover

You only have to touch cover window using magnetic bar. It is quite useful for the corrective work in the explosive area.

LCD display with back light

Built-in HD(high dissolution) A/D converter for accurate output signal.

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, TCD or NDIR
Built-in display	2-lines x 8-characters LCD with back light
Gas sampling	Diffusion type
Target gas	Please refer to the target gas list.
Measurement range	0 ~ 100 %LEL, 0~10,000ppm. 0~100% VOL
Response time	within 20 seconds, 90%/full scale
Accuracy	≤2% /full scale
Sensor displacement	Zero – ≤±2%LEL / 6 month, span -≤±2%LEL / 6 month
Input power	DC 20 ~ 30V
Output power	4 ~ 20mA/Full Scale - 2.5km transmission
Operating temp.& humidity	-20℃~ 60℃, 5 ~ 95% RH (Non-condensing)
Signal cable	CVVS & CVVSB 1.25sq x 3 wire - shield type
Wire conduit	1/2' or 3/4' PF, NPT
Installation type	Wall or Pipe Mounting
Exterior material	Cast Aluminum Alloy
Explosion-proof	Ex d IIC T5
Output	2 step- relay contact (ALARM-1/ALARM-2)
Communication output	RS-485 communication output(option)
Sensor operation period	5 years (in air)
Sensor warranty period	1 year

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

Tel: +603-6259 8363
Fax: +603-6259 9363

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