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VG Instruments (SEA) Sdn Bhd
VG Instruments (SEA) Sdn Bhd (903421-U)
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DA-800 Series (explosion proof)

06-May-2019
DA-800 Series (explosion proof)
标签:
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产品已浏览
SMART Gas Detector/Transmitter(4~20mA)with built-in LCD & explosion proof, Suction Type

DA-800 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. Built-in micro pump for gas sampling enables effective gas detection especially for the environment where diffusion type gas detectors cannot be used. DA-800 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-800 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 ]
 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 ]
 
 
Gas sampling Suction type
Density display and unit Built-in LCD Display - PPM, %LEL, or % set by user
Input power DC 18-30V
Explosion proof Ex d IIB+H2
Target gas Please refer to the list.
Detection principle Catalytic, Electro-Chemical, or NDIR
Suction flow rate 0 ~ 1000ml / min
Suction distance Within 100m
Measurement range Please refer to the list
Accuracy ≤2% /full scale
Response time within 20 seconds, 90%/full scale
Sensor calibration Auto calibration with magnetic switch
User programming Calibration density & Measurement range
Wiring CVVS & CVVSB 1.25sq*3wire
Output signal 4-20mA DC/F.S // RS-485(MODBUS-RTU)
Alarm output 2 step (HIGH/LOW) alarm relay contact
Operation temperature -10℃ ~ 50℃
Operation humidity 5 ~ 95%RH (non-condensing)
Wire conduit 1/2” or 3/4” PF, NPT
Housing material Cast Aluminum Alloy
Mounting Wall or pipe mounting

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